New Example - Calendar (#91)

flutter_date_pickers-master/CHANGELOG.md

@@ -0,0 +1,58 @@
+## [0.0.6] - 21 November 2019
+Added support for custom day decoration.
+Added support for custom disabled days.
+
+## [0.1.0] - 31 May 2020
+Fixed i18n issue for MonthPicker in case no locale was set.
+Fixed selection periods with unselectable dates issue in RangePicker.
+Minor changes and fixes.
+
+## [0.1.1] - 20 June 2020
+Added scrollPhysics property to DatePickerLayoutSettings.
+
+## [0.1.3] - 23 June 2020
+Added day headers style customization.
+Added prev/next icon customization.
+Added selected period text styles customization.
+
+## [0.1.4] - 2 July 2020
+Added firstDayOfWeekIndex customization.
+
+## [0.1.5] - 29 July 2020
+Added support of the CupertinoApp ancestor (fixed #29).
+
+## [0.1.6] - 21 August 2020
+Added two customizable fields to DatePickerLayoutSettings: showNextMonthStart, showPrevMonthEnd (implemented #28).
+
+## [0.1.7] - 25 August 2020
+Added onMonthChange callback for all day based pickers.
+Added newPeriod field to UnselectablePeriodError class.
+
+## [0.1.8] - 26 October 2020
+Fixed selection in RangePicker which is on the edge of date when time changes (#44).
+
+## [0.1.9] - 23 December 2020
+Increased intl dependency version.
+Minor changes.
+
+## [0.1.10] - 23 December 2020
+Increased intl dependency version according to one used on pub.dev.
+
+## [0.2.0] - 7 March 2021
+Migrated to null-safety.
+Added DatePickerLayoutSettings.hideMonthNavigationRow option.
+
+## [0.2.1] - 16 March 2021
+Used intl for getting short month name for MonthPicker (fixed #54)
+
+## [0.2.2] - 20 March 2021
+Added **initiallyShowDate** optional property for DayPicker, WeekPicker and RangePicker.
+
+## [0.2.3] - 05 April 2021
+Fixed nextTooltip initializing (#57).
+
+## [0.2.3+1] - 11 April 2021
+Fixed defining DayHeaderStyle in DatePickerStyles.fulfillWithTheme.
+
+## [0.2.4] - 29 April 2021
+Fixed incorrect new month calculations (#56).

flutter_date_pickers-master/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2019 Maria Melnik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

flutter_date_pickers-master/README.md

@@ -0,0 +1,120 @@
+# flutter_date_pickers  
+  
+[![Actions Status](https://github.com/MariaMelnik/flutter_date_pickers/workflows/Test/badge.svg)](https://github.com/MariaMelnik/flutter_date_pickers/actions)
+[![Pub](https://img.shields.io/pub/v/flutter_date_pickers.svg)](https://pub.dev/packages/flutter_date_pickers)
+[![Likes](https://img.shields.io/badge/dynamic/json?color=blue&label=likes&query=likes&url=http://www.pubscore.gq/likes?package=flutter_date_pickers&style=flat-square&cacheSeconds=90000)](https://pub.dev/packages/flutter_date_pickers)
+[![Health](https://img.shields.io/badge/dynamic/json?color=blue&label=health&query=pub_points&url=http://www.pubscore.gq/pub-points?package=flutter_date_pickers&style=flat-square&cacheSeconds=90000)](https://pub.dev/packages/flutter_date_pickers/score)
+[![Code size](https://img.shields.io/github/languages/code-size/MariaMelnik/flutter_date_pickers?logo=github&logoColor=white)](https://github.com/MariaMelnik/flutter_date_pickers)
+[![License: MIT](https://img.shields.io/badge/license-MIT-purple.svg)](https://opensource.org/licenses/MIT)
+[![GitHub stars](https://img.shields.io/github/stars/MariaMelnik/flutter_date_pickers?style=social)](https://github.com/MariaMelnik/flutter_date_pickers/)
+<!--[![Coverage](https://codecov.io/gh/MariaMelnik/flutter_date_pickers/branch/master/graph/badge.svg)](https://codecov.io/gh/MariaMelnik/flutter_date_pickers)
+[![effective_dart](https://img.shields.io/badge/style-effective_dart-40c4ff.svg)](https://github.com/tenhobi/effective_dart)-->
+  
+  
+Allows to use date pickers without dialog.
+Provides some customizable styles for date pickers.
+
+A set of date pickers:
+* `DayPicker` for one day
+* `WeekPicker` for whole week
+* `RangePicker` for random range
+* `MonthPicker` for month
+
+![](demoDatePickers2.gif)
+
+## How to style date picker
+Every date picker constructor take a style object as a parameter (if no styles passed - defaults will be used).
+
+For single value pickers (DayPicker, MonthPicker) it is DatePickerStyles object;
+
+For range pickers (WeekPicker, RangePickers) it is DatePickerRangeStyles object;
+
+Customizable styles:
+for all date pickers
+
+| Property | Description |
+|---|---|
+| TextStyle displayedPeriodTitle | title of the date picker |
+| TextStyle currentDateStyle | style for current date |
+| TextStyle disabledDateStyle | style for disabled dates (before first and after last date user can pick) |
+| TextStyle selectedDateStyle | style for selected date |
+| BoxDecoration selectedSingleDateDecoration | decoration for selected date in case single value is selected |
+| TextStyle defaultDateTextStyle | style for date which is neither current nor disabled nor selected |
+
+only for range date pickers (WeekPicker, RangePicker)
+
+| Property | Description |
+|---|---|
+| BoxDecoration selectedPeriodStartDecoration | decoration for the first date of the selected range |
+| BoxDecoration selectedPeriodLastDecoration | decoration for the first date of the selected range |
+| BoxDecoration selectedPeriodMiddleDecoration | Decoration for the date of the selected range which is not first date and not end date of this range |
+
+## How to make some dates not selectable date picker
+By default only dates before `firstDate` and after `lastDate` are not selectable. But you can set custom disabled days.
+`DayPicker`, `WeekPicker` and `RangePicker` take a `SelectableDayPredicate selectableDayPredicate`
+where you can specify function which returns if some date is disabled or not.
+
+If some date is disabled for selection it gets `disabledDateStyle`.
+
+If selected range or week pretends to include such disabled date `UnselectablePeriodException` occurs.
+To handle it - pass `onSelectionError` callback to date picker.
+
+## How to make special decorations for some dates
+By default cells are decorated with `datePickerStyles` slyles (or default if no styles was passed to date picker).
+If you need special decoration for some days use `eventDecorationBuilder`.
+Currently only for `DayPicker`, `WeekPicker` and `RangePicker`.
+
+- If date is not selected basic styles will be merged with styles from `eventDecorationBuilder`.
+- If date is current date styles from `eventDecorationBuilder` win (if there are).
+- Otherwise basic styles (`datePickerStyles`) win.
+
+## What time I will get after selection?
+If one day selected:
+ you will get start of the day (00:00:00) by default. If selected `firstDate` - you will get time of it.
+
+If range/week selected:
+ for start you will get start of the day (00:00:00) by default. If selected `firstDate` - you will get time of it.
+ for end you will get end of the day (23:59:59.999) by default. If selected `lastDate` - you will get time of it.
+
+If month selected:
+  you will get start (00:00:00) of the 1 day of month by default.
+  If selected month same as month of the `firstDate` - you will get `firstDate`.
+
+## Usage
+
+```dart
+// Create week date picker with passed parameters
+Widget buildWeekDatePicker (DateTime selectedDate, DateTime firstAllowedDate, DateTime lastAllowedDate, ValueChanged<DatePeriod> onNewSelected) {
+
+ // add some colors to default settings
+    DatePickerRangeStyles styles = DatePickerRangeStyles(
+      selectedPeriodLastDecoration: BoxDecoration(
+          color: Colors.red,
+          borderRadius: BorderRadius.only(
+              topRight: Radius.circular(10.0),
+              bottomRight: Radius.circular(10.0))),
+      selectedPeriodStartDecoration: BoxDecoration(
+        color: Colors.green,
+        borderRadius: BorderRadius.only(
+            topLeft: Radius.circular(10.0), bottomLeft: Radius.circular(10.0)),
+      ),
+      selectedPeriodMiddleDecoration: BoxDecoration(
+          color: Colors.yellow, shape: BoxShape.rectangle),
+    );
+    
+  return WeekPicker(
+      selectedDate: selectedDate,
+      onChanged: onNewSelected,
+      firstDate: firstAllowedDate,
+      lastDate: lastAllowedDate,
+      datePickerStyles: styles
+  );
+}
+```
+
+## Example app
+Please checkout [example](https://github.com/MariaMelnik/flutter_date_pickers/tree/master/example).
+
+For help getting started with Flutter, view our
+[online documentation](https://flutter.io/docs), which offers tutorials,
+samples, guidance on mobile development, and a full API reference.

flutter_date_pickers-master/analysis_options.yaml

@@ -0,0 +1,94 @@
+linter:
+  rules:
+    # STYLE
+    camel_case_types: true
+    camel_case_extensions: true
+    library_names: true
+    file_names: true
+    library_prefixes: true
+    non_constant_identifier_names: true
+    constant_identifier_names: true
+    directives_ordering: true
+    lines_longer_than_80_chars: true
+    curly_braces_in_flow_control_structures: true
+
+    # DOCUMENTATION
+    slash_for_doc_comments: true
+    package_api_docs: true
+    public_member_api_docs: true
+    comment_references: true
+
+    # USAGE
+    implementation_imports: true
+    avoid_relative_lib_imports: true
+    prefer_relative_imports: true
+    prefer_adjacent_string_concatenation: true
+    prefer_interpolation_to_compose_strings: true
+    unnecessary_brace_in_string_interps: true
+    prefer_collection_literals: true
+    prefer_is_empty: true
+    prefer_is_not_empty: true
+    avoid_function_literals_in_foreach_calls: true
+    prefer_iterable_whereType: true
+    prefer_function_declarations_over_variables: true
+    unnecessary_lambdas: true
+    prefer_equal_for_default_values: true
+    avoid_init_to_null: true
+    unnecessary_getters_setters: true
+    unnecessary_getters: true
+    prefer_expression_function_bodies: true
+    unnecessary_this: true
+    unnecessary_const: true
+    avoid_catches_without_on_clauses: true
+    avoid_catching_errors: true
+    use_rethrow_when_possible: true
+
+    # DESIGN
+    use_to_and_as_if_applicable: true
+    one_member_abstracts: true
+    avoid_classes_with_only_static_members: true
+    prefer_mixin: true
+    prefer_final_fields: true
+    use_setters_to_change_properties: true
+    avoid_setters_without_getters: true
+    avoid_returning_null: true
+    avoid_returning_this: true
+    type_annotate_public_apis: true
+    prefer_typing_uninitialized_variables: true
+#    omit_local_variable_types: true
+    avoid_types_on_closure_parameters: true
+    avoid_return_types_on_setters: true
+    prefer_generic_function_type_aliases: true
+    avoid_private_typedef_functions: true
+    use_function_type_syntax_for_parameters: true
+    avoid_positional_boolean_parameters: true
+    hash_and_equals: true
+    avoid_equals_and_hash_code_on_mutable_classes: true
+    avoid_null_checks_in_equality_operators: true
+
+
+    # PEDANTIC
+    # (duplicated rules are removed)
+    always_declare_return_types: true
+    always_require_non_null_named_parameters: true
+    annotate_overrides: true
+    avoid_empty_else: true
+    avoid_shadowing_type_parameters: true
+    avoid_types_as_parameter_names: true
+    empty_catches: true
+    empty_constructor_bodies: true
+    no_duplicate_case_values: true
+    null_closures: true
+    prefer_conditional_assignment: true
+    prefer_contains: true
+    prefer_for_elements_to_map_fromIterable: true
+    prefer_if_null_operators: true
+#    prefer_single_quotes: true
+    prefer_spread_collections: true
+    recursive_getters: true
+    type_init_formals: true
+    unawaited_futures: true
+    unnecessary_new: true
+    unnecessary_null_in_if_null_operators: true
+    unrelated_type_equality_checks: true
+    valid_regexps: true

flutter_date_pickers-master/example/android/app/build.gradle

@@ -0,0 +1,61 @@
+def localProperties = new Properties()
+def localPropertiesFile = rootProject.file('local.properties')
+if (localPropertiesFile.exists()) {
+    localPropertiesFile.withReader('UTF-8') { reader ->
+        localProperties.load(reader)
+    }
+}
+
+def flutterRoot = localProperties.getProperty('flutter.sdk')
+if (flutterRoot == null) {
+    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
+}
+
+def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
+if (flutterVersionCode == null) {
+    flutterVersionCode = '1'
+}
+
+def flutterVersionName = localProperties.getProperty('flutter.versionName')
+if (flutterVersionName == null) {
+    flutterVersionName = '1.0'
+}
+
+apply plugin: 'com.android.application'
+apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
+
+android {
+    compileSdkVersion 28
+
+    lintOptions {
+        disable 'InvalidPackage'
+    }
+
+    defaultConfig {
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+        applicationId "com.mariamelnik.flutter_date_picker"
+        minSdkVersion 16
+        targetSdkVersion 28
+        versionCode flutterVersionCode.toInteger()
+        versionName flutterVersionName
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            // TODO: Add your own signing config for the release build.
+            // Signing with the debug keys for now, so `flutter run --release` works.
+            signingConfig signingConfigs.debug
+        }
+    }
+}
+
+flutter {
+    source '../..'
+}
+
+dependencies {
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'com.android.support.test:runner:1.0.2'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+}

flutter_date_pickers-master/example/android/app/src/debug/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.mariamelnik.flutter_date_picker">
+    <!-- Flutter needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

flutter_date_pickers-master/example/android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,33 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.mariamelnik.flutter_date_picker">
+
+    <!-- io.flutter.app.FlutterApplication is an android.app.Application that
+         calls FlutterMain.startInitialization(this); in its onCreate method.
+         In most cases you can leave this as-is, but you if you want to provide
+         additional functionality it is fine to subclass or reimplement
+         FlutterApplication and put your custom class here. -->
+    <application
+        android:name="io.flutter.app.FlutterApplication"
+        android:label="flutter_date_picker"
+        android:icon="@mipmap/ic_launcher">
+        <activity
+            android:name=".MainActivity"
+            android:launchMode="singleTop"
+            android:theme="@style/LaunchTheme"
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+            android:hardwareAccelerated="true"
+            android:windowSoftInputMode="adjustResize">
+            <!-- This keeps the window background of the activity showing
+                 until Flutter renders its first frame. It can be removed if
+                 there is no splash screen (such as the default splash screen
+                 defined in @style/LaunchTheme). -->
+            <meta-data
+                android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
+                android:value="true" />
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+    </application>
+</manifest>

flutter_date_pickers-master/example/android/app/src/main/java/com/mariamelnik/flutter_date_picker/MainActivity.java

@@ -0,0 +1,13 @@
+package com.mariamelnik.flutter_date_picker;
+
+import android.os.Bundle;
+import io.flutter.app.FlutterActivity;
+import io.flutter.plugins.GeneratedPluginRegistrant;
+
+public class MainActivity extends FlutterActivity {
+  @Override
+  protected void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    GeneratedPluginRegistrant.registerWith(this);
+  }
+}

flutter_date_pickers-master/example/android/app/src/main/res/drawable/launch_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@android:color/white" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

flutter_date_pickers-master/example/android/app/src/main/res/values/styles.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             Flutter draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+</resources>

flutter_date_pickers-master/example/android/app/src/profile/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.mariamelnik.flutter_date_picker">
+    <!-- Flutter needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

flutter_date_pickers-master/example/android/build.gradle

@@ -0,0 +1,29 @@
+buildscript {
+    repositories {
+        google()
+        jcenter()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.2.1'
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        jcenter()
+    }
+}
+
+rootProject.buildDir = '../build'
+subprojects {
+    project.buildDir = "${rootProject.buildDir}/${project.name}"
+}
+subprojects {
+    project.evaluationDependsOn(':app')
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

flutter_date_pickers-master/example/android/gradle.properties

@@ -0,0 +1,2 @@
+org.gradle.jvmargs=-Xmx1536M
+android.enableR8=true

flutter_date_pickers-master/example/android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Fri Jun 23 08:50:38 CEST 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip

flutter_date_pickers-master/example/android/settings.gradle

@@ -0,0 +1,15 @@
+include ':app'
+
+def flutterProjectRoot = rootProject.projectDir.parentFile.toPath()
+
+def plugins = new Properties()
+def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins')
+if (pluginsFile.exists()) {
+    pluginsFile.withReader('UTF-8') { reader -> plugins.load(reader) }
+}
+
+plugins.each { name, path ->
+    def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile()
+    include ":$name"
+    project(":$name").projectDir = pluginDirectory
+}

flutter_date_pickers-master/example/ios/Flutter/AppFrameworkInfo.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>App</string>
+  <key>CFBundleIdentifier</key>
+  <string>io.flutter.flutter.app</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>App</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>1.0</string>
+  <key>MinimumOSVersion</key>
+  <string>8.0</string>
+</dict>
+</plist>

flutter_date_pickers-master/example/ios/Flutter/Debug.xcconfig

@@ -0,0 +1 @@
+#include "Generated.xcconfig"

flutter_date_pickers-master/example/ios/Flutter/Release.xcconfig

@@ -0,0 +1 @@
+#include "Generated.xcconfig"

flutter_date_pickers-master/example/ios/Runner.xcodeproj/project.pbxproj

@@ -0,0 +1,491 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 46;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
+		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
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+		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
+		97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
+		97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXCopyFilesBuildPhase section */
+		9705A1C41CF9048500538489 /* Embed Frameworks */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 10;
+			files = (
+			);
+			name = "Embed Frameworks";
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXCopyFilesBuildPhase section */
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+}

flutter_date_pickers-master/example/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>

flutter_date_pickers-master/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -0,0 +1,93 @@
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+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+               BuildableName = "Runner.app"
+               BlueprintName = "Runner"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+      </Testables>
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Profile"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

flutter_date_pickers-master/example/ios/Runner.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+</Workspace>

flutter_date_pickers-master/example/ios/Runner/AppDelegate.h

@@ -0,0 +1,6 @@
+#import <Flutter/Flutter.h>
+#import <UIKit/UIKit.h>
+
+@interface AppDelegate : FlutterAppDelegate
+
+@end

flutter_date_pickers-master/example/ios/Runner/AppDelegate.m

@@ -0,0 +1,13 @@
+#include "AppDelegate.h"
+#include "GeneratedPluginRegistrant.h"
+
+@implementation AppDelegate
+
+- (BOOL)application:(UIApplication *)application
+    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
+  [GeneratedPluginRegistrant registerWithRegistry:self];
+  // Override point for customization after application launch.
+  return [super application:application didFinishLaunchingWithOptions:launchOptions];
+}
+
+@end

flutter_date_pickers-master/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,122 @@
+{
+  "images" : [
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "83.5x83.5",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-83.5x83.5@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "1024x1024",
+      "idiom" : "ios-marketing",
+      "filename" : "Icon-App-1024x1024@1x.png",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

flutter_date_pickers-master/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

flutter_date_pickers-master/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md

@@ -0,0 +1,5 @@
+# Launch Screen Assets
+
+You can customize the launch screen with your own desired assets by replacing the image files in this directory.
+
+You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images.

flutter_date_pickers-master/example/ios/Runner/Base.lproj/LaunchScreen.storyboard

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12121" systemVersion="16G29" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12089"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="Ydg-fD-yQy"/>
+                        <viewControllerLayoutGuide type="bottom" id="xbc-2k-c8Z"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <imageView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" image="LaunchImage" translatesAutoresizingMaskIntoConstraints="NO" id="YRO-k0-Ey4">
+                            </imageView>
+                        </subviews>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <constraints>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="1a2-6s-vTC"/>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="4X2-HB-R7a"/>
+                        </constraints>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+    <resources>
+        <image name="LaunchImage" width="168" height="185"/>
+    </resources>
+</document>

flutter_date_pickers-master/example/ios/Runner/Base.lproj/Main.storyboard

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10117" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
+    </dependencies>
+    <scenes>
+        <!--Flutter View Controller-->
+        <scene sceneID="tne-QT-ifu">
+            <objects>
+                <viewController id="BYZ-38-t0r" customClass="FlutterViewController" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
+                        <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
+            </objects>
+        </scene>
+    </scenes>
+</document>

flutter_date_pickers-master/example/ios/Runner/Info.plist

@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>flutter_date_picker</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(FLUTTER_BUILD_NAME)</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>$(FLUTTER_BUILD_NUMBER)</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UIViewControllerBasedStatusBarAppearance</key>
+	<false/>
+</dict>
+</plist>

flutter_date_pickers-master/example/ios/Runner/main.m

@@ -0,0 +1,9 @@
+#import <Flutter/Flutter.h>
+#import <UIKit/UIKit.h>
+#import "AppDelegate.h"
+
+int main(int argc, char* argv[]) {
+  @autoreleasepool {
+    return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
+  }
+}

flutter_date_pickers-master/example/lib/color_picker_dialog.dart

@@ -0,0 +1,71 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_material_color_picker/flutter_material_color_picker.dart';
+
+/// Dialog with some Material colors ([materialColors]) to pick one of them.
+class ColorPickerDialog extends StatefulWidget {
+
+  /// Initially selected color.
+  ///
+  /// If pre-selected color is not from [materialColors] [Colors.blue] will be
+  /// used.
+  final Color selectedColor;
+
+  ///
+  const ColorPickerDialog({
+    Key? key,
+    required this.selectedColor
+  }) : super(key: key);
+
+  @override
+  State<StatefulWidget> createState() => _ColorPickerDialogState();
+}
+
+class _ColorPickerDialogState extends State<ColorPickerDialog> {
+  Color _mainColor = Colors.blue;
+
+  @override
+  void initState() {
+    super.initState();
+
+    bool isSelectedMaterial = materialColors.contains(widget.selectedColor);
+    if (isSelectedMaterial) {
+      _mainColor = widget.selectedColor;
+    }
+  }
+
+  @override
+  // ignore: prefer_expression_function_bodies
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      contentPadding: const EdgeInsets.all(6.0),
+      title: const Text("Color picker"),
+      content: MaterialColorPicker(
+        selectedColor: _mainColor,
+        allowShades: false,
+        onMainColorChange: _onMainColorChange,
+      ),
+      actions: [
+        TextButton(
+          child: const Text('CANCEL'),
+          onPressed: () {
+            Navigator.of(context).pop(null);
+          },
+        ),
+        TextButton(
+          child: const Text('SUBMIT'),
+          onPressed: () {
+            Navigator.of(context).pop(_mainColor);
+          },
+        ),
+      ],
+    );
+  }
+
+  void _onMainColorChange (Color? newColor) {
+    if (newColor == null) return;
+
+    setState(() {
+      _mainColor = newColor;
+    });
+  }
+}

flutter_date_pickers-master/example/lib/color_selector_btn.dart

@@ -0,0 +1,57 @@
+import 'package:flutter/material.dart';
+
+// default with and height for the button container
+const double _kBtnSize = 24.0;
+
+/// Round colored button with title to select some style color.
+class ColorSelectorBtn extends StatelessWidget {
+  /// Title near color button.
+  final String title;
+
+  /// Color of the button.
+  final Color color;
+
+  /// onTap callback.
+  final VoidCallback showDialogFunction;
+
+  /// Size of the circle.
+  ///
+  /// By default is [_kBtnSize].
+  final double colorBtnSize;
+
+  ///
+  const ColorSelectorBtn(
+      {Key? key,
+      required this.title,
+      required this.color,
+      required this.showDialogFunction,
+      this.colorBtnSize = _kBtnSize})
+      : super(key: key);
+
+  @override
+  // ignore: prefer_expression_function_bodies
+  Widget build(BuildContext context) {
+    return Expanded(
+      child: Row(
+        children: <Widget>[
+          GestureDetector(
+            onTap: showDialogFunction,
+            child: Container(
+              height: colorBtnSize,
+              width: colorBtnSize,
+              decoration: BoxDecoration(color: color, shape: BoxShape.circle),
+            ),
+          ),
+          const SizedBox(
+            width: 8.0,
+          ),
+          Expanded(
+              child: Text(
+            title,
+            overflow: TextOverflow.ellipsis,
+          )),
+        ],
+      ),
+    );
+  }
+}

flutter_date_pickers-master/example/lib/date_pickers_widgets/day_picker_page.dart

@@ -0,0 +1,188 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_date_pickers/flutter_date_pickers.dart' as dp;
+import 'package:flutter_date_pickers/flutter_date_pickers.dart';
+
+import '../color_picker_dialog.dart';
+import '../color_selector_btn.dart';
+import '../event.dart';
+
+/// Page with [dp.DayPicker].
+class DayPickerPage extends StatefulWidget {
+  /// Custom events.
+  final List<Event> events;
+
+  ///
+  const DayPickerPage({
+    Key? key,
+    this.events = const []
+  }) : super(key: key);
+
+  @override
+  State<StatefulWidget> createState() => _DayPickerPageState();
+}
+
+class _DayPickerPageState extends State<DayPickerPage> {
+  DateTime _selectedDate = DateTime.now();
+
+  DateTime _firstDate = DateTime.now().subtract(Duration(days: 45));
+  DateTime _lastDate = DateTime.now().add(Duration(days: 45));
+
+  Color selectedDateStyleColor = Colors.blue;
+  Color selectedSingleDateDecorationColor = Colors.red;
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+
+    Color? bodyTextColor = Theme.of(context).accentTextTheme.bodyText1?.color;
+    if (bodyTextColor != null) selectedDateStyleColor = bodyTextColor;
+
+    selectedSingleDateDecorationColor = Theme.of(context).accentColor;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    // add selected colors to default settings
+    dp.DatePickerRangeStyles styles = dp.DatePickerRangeStyles(
+        selectedDateStyle: Theme.of(context)
+            .accentTextTheme
+            .bodyText1
+            ?.copyWith(color: selectedDateStyleColor),
+        selectedSingleDateDecoration: BoxDecoration(
+            color: selectedSingleDateDecorationColor,
+            shape: BoxShape.circle
+        ),
+        dayHeaderStyle: DayHeaderStyle(
+            textStyle: TextStyle(
+                color: Colors.red
+            )
+        )
+    );
+
+    return Flex(
+      direction: MediaQuery.of(context).orientation == Orientation.portrait
+          ? Axis.vertical
+          : Axis.horizontal,
+      children: <Widget>[
+        Expanded(
+          child: dp.DayPicker.single(
+            selectedDate: _selectedDate,
+            onChanged: _onSelectedDateChanged,
+            firstDate: _firstDate,
+            lastDate: _lastDate,
+            datePickerStyles: styles,
+            datePickerLayoutSettings: dp.DatePickerLayoutSettings(
+                maxDayPickerRowCount: 2,
+                showPrevMonthEnd: true,
+                showNextMonthStart: true
+            ),
+            selectableDayPredicate: _isSelectableCustom,
+            eventDecorationBuilder: _eventDecorationBuilder,
+          ),
+        ),
+        Container(
+          child: Padding(
+            padding:
+                const EdgeInsets.symmetric(horizontal: 12.0, vertical: 12.0),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: <Widget>[
+                Text(
+                  "Selected date styles",
+                  style: Theme.of(context).textTheme.subtitle1,
+                ),
+                Padding(
+                  padding: const EdgeInsets.symmetric(vertical: 12.0),
+                  child: Row(
+                    mainAxisSize: MainAxisSize.min,
+                    children: <Widget>[
+                      ColorSelectorBtn(
+                        title: "Text",
+                        color: selectedDateStyleColor,
+                        showDialogFunction: _showSelectedDateDialog,
+                        colorBtnSize: 42.0,
+                      ),
+                      SizedBox(
+                        width: 12.0,
+                      ),
+                      ColorSelectorBtn(
+                        title: "Background",
+                        color: selectedSingleDateDecorationColor,
+                        showDialogFunction: _showSelectedBackgroundColorDialog,
+                        colorBtnSize: 42.0,
+                      ),
+                    ],
+                  ),
+                ),
+                Text("Selected: $_selectedDate")
+              ],
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+
+  // select text color of the selected date
+  void _showSelectedDateDialog() async {
+    Color? newSelectedColor = await showDialog(
+        context: context,
+        builder: (_) => ColorPickerDialog(
+              selectedColor: selectedDateStyleColor,
+            ));
+
+    if (newSelectedColor != null) {
+      setState(() {
+        selectedDateStyleColor = newSelectedColor;
+      });
+    }
+  }
+
+  // select background color of the selected date
+  void _showSelectedBackgroundColorDialog() async {
+    Color? newSelectedColor = await showDialog(
+        context: context,
+        builder: (_) => ColorPickerDialog(
+              selectedColor: selectedSingleDateDecorationColor,
+            ));
+
+    if (newSelectedColor != null) {
+      setState(() {
+        selectedSingleDateDecorationColor = newSelectedColor;
+      });
+    }
+  }
+
+  void _onSelectedDateChanged(DateTime newDate) {
+    setState(() {
+      _selectedDate = newDate;
+    });
+  }
+
+  // ignore: prefer_expression_function_bodies
+  bool _isSelectableCustom (DateTime day) {
+    return day.weekday < 6;
+  }
+
+  dp.EventDecoration? _eventDecorationBuilder(DateTime date) {
+    List<DateTime> eventsDates = widget.events
+        .map<DateTime>((Event e) => e.date)
+        .toList();
+
+    bool isEventDate = eventsDates.any((DateTime d) =>
+        date.year == d.year
+        && date.month == d.month
+        && d.day == date.day);
+
+    BoxDecoration roundedBorder = BoxDecoration(
+        border: Border.all(
+          color: Colors.deepOrange,
+        ),
+        borderRadius: BorderRadius.all(Radius.circular(3.0))
+    );
+
+    return isEventDate
+        ? dp.EventDecoration(boxDecoration: roundedBorder)
+        : null;
+  }
+}

flutter_date_pickers-master/example/lib/date_pickers_widgets/days_picker_page.dart

@@ -0,0 +1,191 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_date_pickers/flutter_date_pickers.dart' as dp;
+
+import '../color_picker_dialog.dart';
+import '../color_selector_btn.dart';
+import '../event.dart';
+
+/// Page with [dp.DayPicker] where many single days can be selected.
+class DaysPickerPage extends StatefulWidget {
+  /// Custom events.
+  final List<Event> events;
+
+  /// 
+  const DaysPickerPage({
+    Key? key,
+    this.events = const []
+  }) : super(key: key);
+
+  @override
+  State<StatefulWidget> createState() => _DaysPickerPageState();
+}
+
+class _DaysPickerPageState extends State<DaysPickerPage> {
+  List<DateTime> _selectedDates = [];
+  DateTime _firstDate = DateTime.now().subtract(Duration(days: 45));
+  DateTime _lastDate = DateTime.now().add(Duration(days: 45));
+
+  Color selectedDateStyleColor = Colors.blue;
+  Color selectedSingleDateDecorationColor = Colors.red;
+
+  @override
+  void initState() {
+    super.initState();
+
+    final now = DateTime.now();
+
+    _selectedDates = [
+      now,
+      now.subtract(Duration(days: 10)),
+      now.add(Duration(days: 7))
+    ];
+  }
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+
+    Color? bodyTextColor = Theme.of(context).accentTextTheme.bodyText1?.color;
+    if (bodyTextColor != null) selectedDateStyleColor = bodyTextColor;
+
+    selectedSingleDateDecorationColor = Theme.of(context).accentColor;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    // add selected colors to default settings
+    dp.DatePickerRangeStyles styles = dp.DatePickerRangeStyles(
+        selectedDateStyle: Theme.of(context)
+            .accentTextTheme
+            .bodyText1
+            ?.copyWith(color: selectedDateStyleColor),
+        selectedSingleDateDecoration: BoxDecoration(
+            color: selectedSingleDateDecorationColor, shape: BoxShape.circle));
+
+    return Flex(
+      direction: MediaQuery.of(context).orientation == Orientation.portrait
+          ? Axis.vertical
+          : Axis.horizontal,
+      children: <Widget>[
+        Expanded(
+          child: dp.DayPicker.multi(
+            selectedDates: _selectedDates,
+            onChanged: _onSelectedDateChanged,
+            firstDate: _firstDate,
+            lastDate: _lastDate,
+            datePickerStyles: styles,
+            datePickerLayoutSettings: dp.DatePickerLayoutSettings(
+                maxDayPickerRowCount: 2,
+                showPrevMonthEnd: true,
+                showNextMonthStart: true
+            ),
+            selectableDayPredicate: _isSelectableCustom,
+            eventDecorationBuilder: _eventDecorationBuilder,
+          ),
+        ),
+        Container(
+          child: Padding(
+            padding:
+                const EdgeInsets.symmetric(horizontal: 12.0, vertical: 12.0),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: <Widget>[
+                Text(
+                  "Selected date styles",
+                  style: Theme.of(context).textTheme.subtitle1,
+                ),
+                Padding(
+                  padding: const EdgeInsets.symmetric(vertical: 12.0),
+                  child: Row(
+                    mainAxisSize: MainAxisSize.min,
+                    children: <Widget>[
+                      ColorSelectorBtn(
+                        title: "Text",
+                        color: selectedDateStyleColor,
+                        showDialogFunction: _showSelectedDateDialog,
+                        colorBtnSize: 42.0,
+                      ),
+                      SizedBox(
+                        width: 12.0,
+                      ),
+                      ColorSelectorBtn(
+                        title: "Background",
+                        color: selectedSingleDateDecorationColor,
+                        showDialogFunction: _showSelectedBackgroundColorDialog,
+                        colorBtnSize: 42.0,
+                      ),
+                    ],
+                  ),
+                ),
+                Text("Selected: $_selectedDates")
+              ],
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+
+  // select text color of the selected date
+  void _showSelectedDateDialog() async {
+    Color? newSelectedColor = await showDialog(
+        context: context,
+        builder: (_) => ColorPickerDialog(
+              selectedColor: selectedDateStyleColor,
+            ));
+
+    if (newSelectedColor != null) {
+      setState(() {
+        selectedDateStyleColor = newSelectedColor;
+      });
+    }
+  }
+
+  // select background color of the selected date
+  void _showSelectedBackgroundColorDialog() async {
+    Color? newSelectedColor = await showDialog(
+        context: context,
+        builder: (_) => ColorPickerDialog(
+              selectedColor: selectedSingleDateDecorationColor,
+            ));
+
+    if (newSelectedColor != null) {
+      setState(() {
+        selectedSingleDateDecorationColor = newSelectedColor;
+      });
+    }
+  }
+
+  void _onSelectedDateChanged(List<DateTime> newDates) {
+    setState(() {
+      _selectedDates = newDates;
+    });
+  }
+
+  // ignore: prefer_expression_function_bodies
+  bool _isSelectableCustom (DateTime day) {
+    return day.weekday < 6;
+  }
+
+  dp.EventDecoration? _eventDecorationBuilder(DateTime date) {
+    List<DateTime> eventsDates = widget.events
+        .map<DateTime>((Event e) => e.date)
+        .toList();
+
+    bool isEventDate = eventsDates.any((DateTime d) =>
+    date.year == d.year
+        && date.month == d.month
+        && d.day == date.day);
+
+    BoxDecoration roundedBorder = BoxDecoration(
+        border: Border.all(
+          color: Colors.deepOrange,
+        ),
+        borderRadius: BorderRadius.all(Radius.circular(3.0))
+    );
+
+    return isEventDate
+        ? dp.EventDecoration(boxDecoration: roundedBorder)
+        : null;
+  }
+}

flutter_date_pickers-master/example/lib/date_pickers_widgets/month_picker_page.dart

@@ -0,0 +1,134 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_date_pickers/flutter_date_pickers.dart' as dp;
+
+import '../color_picker_dialog.dart';
+import '../color_selector_btn.dart';
+
+/// Page with the [dp.MonthPicker].
+class MonthPickerPage extends StatefulWidget {
+  @override
+  State<StatefulWidget> createState() => _MonthPickerPageState();
+}
+
+class _MonthPickerPageState extends State<MonthPickerPage> {
+  DateTime _firstDate = DateTime.now().subtract(Duration(days: 350));
+  DateTime _lastDate = DateTime.now().add(Duration(days: 350));
+  DateTime _selectedDate = DateTime.now();
+
+  Color selectedDateStyleColor = Colors.blue;
+  Color selectedSingleDateDecorationColor = Colors.red;
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+
+    Color? bodyTextColor = Theme.of(context).accentTextTheme.bodyText1?.color;
+    if (bodyTextColor != null) selectedDateStyleColor = bodyTextColor;
+
+    selectedSingleDateDecorationColor = Theme.of(context).accentColor;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    // add selected colors to default settings
+    dp.DatePickerStyles styles = dp.DatePickerStyles(
+        selectedDateStyle: Theme.of(context)
+            .accentTextTheme
+            .bodyText1
+            ?.copyWith(color: selectedDateStyleColor),
+        selectedSingleDateDecoration: BoxDecoration(
+            color: selectedSingleDateDecorationColor, shape: BoxShape.circle));
+
+    return Flex(
+      direction: MediaQuery.of(context).orientation == Orientation.portrait
+          ? Axis.vertical
+          : Axis.horizontal,
+      children: <Widget>[
+        Expanded(
+          child: dp.MonthPicker(
+            selectedDate: _selectedDate,
+            onChanged: _onSelectedDateChanged,
+            firstDate: _firstDate,
+            lastDate: _lastDate,
+            datePickerStyles: styles,
+          ),
+        ),
+        Container(
+          child: Padding(
+            padding:
+                const EdgeInsets.symmetric(horizontal: 12.0, vertical: 12.0),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: <Widget>[
+                Text(
+                  "Selected date styles",
+                  style: Theme.of(context).textTheme.subtitle1,
+                ),
+                Padding(
+                  padding: const EdgeInsets.symmetric(vertical: 12.0),
+                  child: Row(
+                    mainAxisSize: MainAxisSize.min,
+                    children: <Widget>[
+                      ColorSelectorBtn(
+                        title: "Text",
+                        color: selectedDateStyleColor,
+                        showDialogFunction: _showSelectedDateDialog,
+                        colorBtnSize: 42.0,
+                      ),
+                      SizedBox(
+                        width: 12.0,
+                      ),
+                      ColorSelectorBtn(
+                        title: "Background",
+                        color: selectedSingleDateDecorationColor,
+                        showDialogFunction: _showSelectedBackgroundColorDialog,
+                        colorBtnSize: 42.0,
+                      ),
+                    ],
+                  ),
+                ),
+                Text("Selected: $_selectedDate")
+              ],
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+
+  // select text color of the selected date
+  void _showSelectedDateDialog() async {
+    Color? newSelectedColor = await showDialog(
+        context: context,
+        builder: (_) => ColorPickerDialog(
+              selectedColor: selectedDateStyleColor,
+            ));
+
+    if (newSelectedColor != null) {
+      setState(() {
+        selectedDateStyleColor = newSelectedColor;
+      });
+    }
+  }
+
+  // select background color of the selected date
+  void _showSelectedBackgroundColorDialog() async {
+    Color? newSelectedColor = await showDialog(
+        context: context,
+        builder: (_) => ColorPickerDialog(
+              selectedColor: selectedSingleDateDecorationColor,
+            ));
+
+    if (newSelectedColor != null) {
+      setState(() {
+        selectedSingleDateDecorationColor = newSelectedColor;
+      });
+    }
+  }
+
+  void _onSelectedDateChanged(DateTime newDate) {
+    setState(() {
+      _selectedDate = newDate;
+    });
+  }
+}

flutter_date_pickers-master/example/lib/date_pickers_widgets/range_picker_page.dart

@@ -0,0 +1,273 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_date_pickers/flutter_date_pickers.dart';
+
+import '../color_picker_dialog.dart';
+import '../color_selector_btn.dart';
+import '../event.dart';
+
+/// Page with the [RangePicker].
+class RangePickerPage extends StatefulWidget {
+
+  /// Custom events.
+  final List<Event> events;
+
+  ///
+  const RangePickerPage({
+    Key? key,
+    this.events = const []
+  }) : super(key: key);
+
+  @override
+  State<StatefulWidget> createState() => _RangePickerPageState();
+}
+
+class _RangePickerPageState extends State<RangePickerPage> {
+  DateTime _firstDate = DateTime.now().subtract(Duration(days: 345));
+  DateTime _lastDate = DateTime.now().add(Duration(days: 345));
+  DatePeriod _selectedPeriod = DatePeriod(
+      DateTime.now().subtract(Duration(days: 30)),
+      DateTime.now().subtract(Duration(days: 12))
+  );
+
+  Color selectedPeriodStartColor = Colors.blue;
+  Color selectedPeriodLastColor = Colors.blue;
+  Color selectedPeriodMiddleColor = Colors.blue;
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+
+    selectedPeriodLastColor = Theme.of(context).accentColor;
+    selectedPeriodMiddleColor = Theme.of(context).accentColor;
+    selectedPeriodStartColor = Theme.of(context).accentColor;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    // add selected colors to default settings
+    DatePickerRangeStyles styles = DatePickerRangeStyles(
+      selectedPeriodLastDecoration: BoxDecoration(
+          color: selectedPeriodLastColor,
+          borderRadius: const BorderRadius.only(
+              topRight: Radius.circular(24.0),
+              bottomRight: Radius.circular(24.0))),
+      selectedPeriodStartDecoration: BoxDecoration(
+        color: selectedPeriodStartColor,
+        borderRadius: const BorderRadius.only(
+            topLeft: Radius.circular(24.0),
+            bottomLeft: Radius.circular(24.0)
+        ),
+      ),
+      selectedPeriodMiddleDecoration: BoxDecoration(
+          color: selectedPeriodMiddleColor, shape: BoxShape.rectangle),
+      nextIcon: const Icon(Icons.arrow_right),
+      prevIcon: const Icon(Icons.arrow_left),
+      dayHeaderStyleBuilder: _dayHeaderStyleBuilder
+    );
+
+    return Flex(
+      direction: MediaQuery.of(context).orientation == Orientation.portrait
+          ? Axis.vertical
+          : Axis.horizontal,
+      children: <Widget>[
+        Expanded(
+          child: RangePicker(
+            initiallyShowDate: DateTime.now(),
+            selectedPeriod: _selectedPeriod,
+            onChanged: _onSelectedDateChanged,
+            firstDate: _firstDate,
+            lastDate: _lastDate,
+            datePickerStyles: styles,
+            eventDecorationBuilder: _eventDecorationBuilder,
+            selectableDayPredicate: _isSelectableCustom,
+            onSelectionError: _onSelectionError,
+          ),
+        ),
+        Container(
+          child: Padding(
+            padding:
+                const EdgeInsets.symmetric(horizontal: 12.0, vertical: 12.0),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: <Widget>[
+                Text(
+                  "Selected date styles",
+                  style: Theme.of(context).textTheme.subtitle1,
+                ),
+                _stylesBlock(),
+                _selectedBlock()
+              ],
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+
+  // Block with show information about selected date
+  // and boundaries of the selected period.
+  Widget _selectedBlock() => Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: <Widget>[
+        _selectedPeriod != null
+            ? Column(children: <Widget>[
+                Padding(
+                  padding: const EdgeInsets.only(top: 8.0, bottom: 4.0),
+                  child: Text("Selected period boundaries:"),
+                ),
+                Text(_selectedPeriod.start.toString()),
+                Text(_selectedPeriod.end.toString()),
+              ])
+            : Container()
+      ],
+    );
+
+  // block with color buttons inside
+  Widget _stylesBlock() => Padding(
+      padding: const EdgeInsets.symmetric(vertical: 12.0),
+      child: Row(
+        mainAxisSize: MainAxisSize.min,
+        children: <Widget>[
+          ColorSelectorBtn(
+              title: "Start",
+              color: selectedPeriodStartColor,
+              showDialogFunction: _showSelectedStartColorDialog),
+          SizedBox(
+            width: 12.0,
+          ),
+          ColorSelectorBtn(
+              title: "Middle",
+              color: selectedPeriodMiddleColor,
+              showDialogFunction: _showSelectedMiddleColorDialog),
+          SizedBox(
+            width: 12.0,
+          ),
+          ColorSelectorBtn(
+              title: "End",
+              color: selectedPeriodLastColor,
+              showDialogFunction: _showSelectedEndColorDialog),
+        ],
+      ),
+    );
+
+  // select background color for the first date of the selected period
+  void _showSelectedStartColorDialog() async {
+    Color? newSelectedColor = await showDialog(
+        context: context,
+        builder: (_) => ColorPickerDialog(
+              selectedColor: selectedPeriodStartColor,
+            ));
+
+    if (newSelectedColor != null) {
+      setState(() {
+        selectedPeriodStartColor = newSelectedColor;
+      });
+    }
+  }
+
+  // select background color for the last date of the selected period
+  void _showSelectedEndColorDialog() async {
+    Color? newSelectedColor = await showDialog(
+        context: context,
+        builder: (_) => ColorPickerDialog(
+              selectedColor: selectedPeriodLastColor,
+            ));
+
+    if (newSelectedColor != null) {
+      setState(() {
+        selectedPeriodLastColor = newSelectedColor;
+      });
+    }
+  }
+
+  // select background color for the middle dates of the selected period
+  void _showSelectedMiddleColorDialog() async {
+    Color? newSelectedColor = await showDialog(
+        context: context,
+        builder: (_) => ColorPickerDialog(
+              selectedColor: selectedPeriodMiddleColor,
+            ));
+
+    if (newSelectedColor != null) {
+      setState(() {
+        selectedPeriodMiddleColor = newSelectedColor;
+      });
+    }
+  }
+
+  void _onSelectedDateChanged(DatePeriod newPeriod) {
+    setState(() {
+      _selectedPeriod = newPeriod;
+    });
+  }
+
+  EventDecoration? _eventDecorationBuilder(DateTime date) {
+    List<DateTime> eventsDates = widget.events
+        .map<DateTime>((Event e) => e.date)
+        .toList();
+
+    bool isEventDate = eventsDates.any((DateTime d) =>
+    date.year == d.year
+        && date.month == d.month
+        && d.day == date.day);
+
+    BoxDecoration roundedBorder = BoxDecoration(
+        border: Border.all(
+          color: Colors.green,
+        ),
+        borderRadius: BorderRadius.all(Radius.circular(3.0))
+    );
+
+    return isEventDate
+        ? EventDecoration(boxDecoration: roundedBorder)
+        : null;
+  }
+
+  // ignore: prefer_expression_function_bodies
+  bool _isSelectableCustom (DateTime day) {
+    DateTime now = DateTime.now();
+    DateTime yesterday = now.subtract(Duration(days: 1));
+    DateTime tomorrow = now.add(Duration(days: 1));
+    bool isYesterday = sameDate(day, yesterday);
+    bool isTomorrow = sameDate(day, tomorrow);
+
+    return !isYesterday && !isTomorrow;
+
+    // return true;
+//    return day.weekday < 6;
+//    return day.day != DateTime.now().add(Duration(days: 7)).day ;
+  }
+
+  void _onSelectionError(UnselectablePeriodException exception) {
+    DatePeriod errorPeriod = exception.period;
+
+    // If user supposed to set another start of the period.
+    bool selectStart = _selectedPeriod.start != errorPeriod.start;
+
+    DateTime newSelection = selectStart
+        ? errorPeriod.start
+        : errorPeriod.end;
+
+    DatePeriod newPeriod = DatePeriod(newSelection, newSelection);
+
+    setState(() {
+      _selectedPeriod = newPeriod;
+    });
+  }
+
+  // 0 is Sunday, 6 is Saturday
+  DayHeaderStyle _dayHeaderStyleBuilder(int weekday) {
+    bool isWeekend = weekday == 0 || weekday == 6;
+
+    return DayHeaderStyle(
+        textStyle: TextStyle(
+            color: isWeekend ? Colors.red : Colors.teal
+        )
+    );
+  }
+}
+
+
+bool sameDate(DateTime first, DateTime second) {
+  return first.year == second.year && first.month == second.month && first.day == second.day;
+}

flutter_date_pickers-master/example/lib/date_pickers_widgets/range_picker_styled.dart

@@ -0,0 +1,228 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_date_pickers/flutter_date_pickers.dart';
+
+import '../event.dart';
+
+/// Page with the [RangePicker] styled according to issue:
+/// https://github.com/MariaMelnik/flutter_date_pickers/issues/49
+class RangePickerPageStyled extends StatefulWidget {
+
+  /// Custom events.
+  final List<Event> events;
+
+  ///
+  const RangePickerPageStyled({
+    Key? key,
+    this.events = const []
+  }) : super(key: key);
+
+  @override
+  State<StatefulWidget> createState() => _RangePickerPageStyledState();
+}
+
+class _RangePickerPageStyledState extends State<RangePickerPageStyled> {
+  DateTime _firstDate = DateTime.now().subtract(Duration(days: 345));
+  DateTime _lastDate = DateTime.now().add(Duration(days: 345));
+  DatePeriod _selectedPeriod = DatePeriod(
+      DateTime.now().subtract(Duration(days: 4)),
+      DateTime.now().add(Duration(days: 8))
+  );
+
+  Color selectedPeriodStartColor = Colors.blue;
+  Color selectedPeriodLastColor = Colors.blue;
+  Color selectedPeriodMiddleColor = Colors.blue;
+
+  @override
+  void initState() {
+    super.initState();
+
+    DateTime selectedPeriodStart = DateTime.now().subtract(Duration(days: 4));
+    DateTime selectedPeriodEnd = DateTime.now().add(Duration(days: 8));
+    _selectedPeriod = DatePeriod(selectedPeriodStart, selectedPeriodEnd);
+  }
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+
+    // defaults for styles
+    selectedPeriodLastColor = Theme.of(context).accentColor;
+    selectedPeriodMiddleColor = Theme.of(context).accentColor;
+    selectedPeriodStartColor = Theme.of(context).accentColor;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    Color middleBgColor = Color.fromRGBO(237, 237, 250, 1);
+    DecorationImage circleImg = DecorationImage(
+        image: AssetImage('images/bg.png'),
+        fit: BoxFit.contain
+    );
+
+    // add selected colors to default settings
+    DatePickerRangeStyles styles = DatePickerRangeStyles(
+      selectedPeriodLastDecoration: BoxDecoration(
+          color: middleBgColor,
+          gradient: LinearGradient(
+              colors: [middleBgColor, Colors.transparent],
+              stops: [0.5, 0.5]
+          ),
+          image: circleImg,
+          borderRadius: const BorderRadius.only(
+              topRight: Radius.circular(24.0),
+              bottomRight: Radius.circular(24.0))
+      ),
+      selectedPeriodStartDecoration: BoxDecoration(
+        color: middleBgColor,
+        gradient: LinearGradient(
+            colors: [Colors.transparent, middleBgColor,],
+            stops: [0.5, 0.5]
+        ),
+        image: circleImg,
+        borderRadius: const BorderRadius.only(
+            topLeft: Radius.circular(24.0),
+            bottomLeft: Radius.circular(24.0)
+        ),
+      ),
+      selectedPeriodMiddleDecoration: BoxDecoration(
+          color: middleBgColor,
+          shape: BoxShape.rectangle
+      ),
+    );
+
+    return Flex(
+      direction: MediaQuery.of(context).orientation == Orientation.portrait
+          ? Axis.vertical
+          : Axis.horizontal,
+      children: <Widget>[
+        Expanded(
+          child: RangePicker(
+            selectedPeriod: _selectedPeriod,
+            onChanged: _onSelectedDateChanged,
+            firstDate: _firstDate,
+            lastDate: _lastDate,
+            datePickerStyles: styles,
+            eventDecorationBuilder: _eventDecorationBuilder,
+            selectableDayPredicate: _isSelectableCustom,
+            onSelectionError: _onSelectionError,
+            datePickerLayoutSettings: DatePickerLayoutSettings(
+                showNextMonthStart: true,
+                showPrevMonthEnd: true
+            ),
+          ),
+        ),
+        Container(
+          child: Padding(
+            padding:
+            const EdgeInsets.symmetric(horizontal: 12.0, vertical: 12.0),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: <Widget>[
+                Text(
+                  "Selected date styles",
+                  style: Theme.of(context).textTheme.subtitle1,
+                ),
+                _selectedBlock()
+              ],
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+
+  // Block with show information about selected date
+  // and boundaries of the selected period.
+  Widget _selectedBlock() => Column(
+    crossAxisAlignment: CrossAxisAlignment.start,
+    children: <Widget>[
+      _selectedPeriod != null
+          ? Column(children: <Widget>[
+        Padding(
+          padding: const EdgeInsets.only(top: 8.0, bottom: 4.0),
+          child: Text("Selected period boundaries:"),
+        ),
+        Text(_selectedPeriod.start.toString()),
+        Text(_selectedPeriod.end.toString()),
+      ])
+          : Container()
+    ],
+  );
+
+  void _onSelectedDateChanged(DatePeriod newPeriod) {
+    setState(() {
+      _selectedPeriod = newPeriod;
+    });
+  }
+
+  EventDecoration? _eventDecorationBuilder(DateTime date) {
+    List<DateTime> eventsDates = widget.events
+        .map<DateTime>((Event e) => e.date)
+        .toList();
+
+    bool isEventDate = eventsDates.any((DateTime d) =>
+    date.year == d.year
+        && date.month == d.month
+        && d.day == date.day);
+
+    BoxDecoration roundedBorder = BoxDecoration(
+        border: Border.all(
+          color: Colors.green,
+        ),
+        borderRadius: BorderRadius.all(Radius.circular(3.0))
+    );
+
+    return isEventDate
+        ? EventDecoration(boxDecoration: roundedBorder)
+        : null;
+  }
+
+  // ignore: prefer_expression_function_bodies
+  bool _isSelectableCustom (DateTime day) {
+    DateTime now = DateTime.now();
+    DateTime yesterday = now.subtract(Duration(days: 1));
+    DateTime tomorrow = now.add(Duration(days: 1));
+    bool isYesterday = _sameDate(day, yesterday);
+    bool isTomorrow = _sameDate(day, tomorrow);
+
+    return !isYesterday && !isTomorrow;
+
+    // return true;
+//    return day.weekday < 6;
+//    return day.day != DateTime.now().add(Duration(days: 7)).day ;
+  }
+
+  void _onSelectionError(UnselectablePeriodException exception) {
+    DatePeriod errorPeriod = exception.period;
+
+    // If user supposed to set another start of the period.
+    bool selectStart = _selectedPeriod.start != errorPeriod.start;
+
+    DateTime newSelection = selectStart
+        ? errorPeriod.start
+        : errorPeriod.end;
+
+    DatePeriod newPeriod = DatePeriod(newSelection, newSelection);
+
+    setState(() {
+      _selectedPeriod = newPeriod;
+    });
+  }
+
+  // 0 is Sunday, 6 is Saturday
+  DayHeaderStyle _dayHeaderStyleBuilder(int weekday) {
+    bool isWeekend = weekday == 0 || weekday == 6;
+
+    return DayHeaderStyle(
+        textStyle: TextStyle(
+            color: isWeekend ? Colors.red : Colors.teal
+        )
+    );
+  }
+}
+
+
+bool _sameDate(DateTime first, DateTime second) =>
+      first.year == second.year 
+      && first.month == second.month 
+      && first.day == second.day;

flutter_date_pickers-master/example/lib/date_pickers_widgets/week_picker_page.dart

@@ -0,0 +1,239 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_date_pickers/flutter_date_pickers.dart';
+
+import '../color_picker_dialog.dart';
+import '../color_selector_btn.dart';
+import '../event.dart';
+
+/// Page with the [WeekPicker].
+class WeekPickerPage extends StatefulWidget {
+  /// Custom events.
+  final List<Event> events;
+
+  ///
+  const WeekPickerPage({
+    Key? key,
+    this.events = const []
+  }) : super(key: key);
+
+  @override
+  State<StatefulWidget> createState() => _WeekPickerPageState();
+}
+
+class _WeekPickerPageState extends State<WeekPickerPage> {
+  DateTime _selectedDate = DateTime.now();
+  DateTime _firstDate = DateTime.now().subtract(Duration(days: 45));
+  DateTime _lastDate = DateTime.now().add(Duration(days: 45));
+  DatePeriod? _selectedPeriod;
+
+  Color selectedPeriodStartColor = Colors.blue;
+  Color selectedPeriodLastColor = Colors.blue;
+  Color selectedPeriodMiddleColor = Colors.blue;
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+
+    // defaults for styles
+    selectedPeriodLastColor = Theme.of(context).accentColor;
+    selectedPeriodMiddleColor = Theme.of(context).accentColor;
+    selectedPeriodStartColor = Theme.of(context).accentColor;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    // add selected colors to default settings
+    DatePickerRangeStyles styles = DatePickerRangeStyles(
+      selectedPeriodLastDecoration: BoxDecoration(
+          color: selectedPeriodLastColor,
+          borderRadius: BorderRadius.only(
+              topRight: Radius.circular(10.0),
+              bottomRight: Radius.circular(10.0))),
+      selectedPeriodStartDecoration: BoxDecoration(
+        color: selectedPeriodStartColor,
+        borderRadius: BorderRadius.only(
+            topLeft: Radius.circular(10.0), bottomLeft: Radius.circular(10.0)),
+      ),
+      selectedPeriodMiddleDecoration: BoxDecoration(
+          color: selectedPeriodMiddleColor, shape: BoxShape.rectangle),
+    );
+
+    return Flex(
+      direction: MediaQuery.of(context).orientation == Orientation.portrait
+          ? Axis.vertical
+          : Axis.horizontal,
+      children: <Widget>[
+        Expanded(
+          child: WeekPicker(
+            selectedDate: _selectedDate,
+            onChanged: _onSelectedDateChanged,
+            firstDate: _firstDate,
+            lastDate: _lastDate,
+            datePickerStyles: styles,
+            onSelectionError: _onSelectionError,
+            selectableDayPredicate: _isSelectableCustom,
+            eventDecorationBuilder: _eventDecorationBuilder,
+          ),
+        ),
+        Container(
+          child: Padding(
+            padding:
+                const EdgeInsets.symmetric(horizontal: 12.0, vertical: 12.0),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: <Widget>[
+                Text(
+                  "Selected date styles",
+                  style: Theme.of(context).textTheme.subtitle1,
+                ),
+                _stylesBlock(),
+                _selectedBlock()
+              ],
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+
+  // block witt color buttons insede
+  Widget _stylesBlock() => Padding(
+      padding: const EdgeInsets.symmetric(vertical: 12.0),
+      child: Row(
+        mainAxisSize: MainAxisSize.min,
+        children: <Widget>[
+          ColorSelectorBtn(
+              title: "Start",
+              color: selectedPeriodStartColor,
+              showDialogFunction: _showSelectedStartColorDialog),
+          SizedBox(
+            width: 12.0,
+          ),
+          ColorSelectorBtn(
+              title: "Middle",
+              color: selectedPeriodMiddleColor,
+              showDialogFunction: _showSelectedMiddleColorDialog),
+          SizedBox(
+            width: 12.0,
+          ),
+          ColorSelectorBtn(
+              title: "End",
+              color: selectedPeriodLastColor,
+              showDialogFunction: _showSelectedEndColorDialog),
+        ],
+      ),
+    );
+
+  // Block with  information about selected date
+  // and boundaries of the selected period.
+  Widget _selectedBlock() => Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: <Widget>[
+        Padding(
+          padding: const EdgeInsets.only(top: 8.0),
+          child: Text("Selected: $_selectedDate"),
+        ),
+        _selectedPeriod != null
+            ? Column(children: <Widget>[
+                Padding(
+                  padding: const EdgeInsets.only(top: 8.0, bottom: 4.0),
+                  child: Text("Selected period boundaries:"),
+                ),
+                Text(_selectedPeriod!.start.toString()),
+                Text(_selectedPeriod!.end.toString()),
+              ])
+            : Container()
+      ],
+    );
+
+  // select background color for the first date of the selected period
+  void _showSelectedStartColorDialog() async {
+    Color? newSelectedColor = await showDialog(
+        context: context,
+        builder: (_) => ColorPickerDialog(
+              selectedColor: selectedPeriodStartColor,
+            ));
+
+    if (newSelectedColor != null) {
+      setState(() {
+        selectedPeriodStartColor = newSelectedColor;
+      });
+    }
+  }
+
+  // select background color for the last date of the selected period
+  void _showSelectedEndColorDialog() async {
+    Color? newSelectedColor = await showDialog(
+        context: context,
+        builder: (_) => ColorPickerDialog(
+              selectedColor: selectedPeriodLastColor,
+            ));
+
+    if (newSelectedColor != null) {
+      setState(() {
+        selectedPeriodLastColor = newSelectedColor;
+      });
+    }
+  }
+
+  // select background color for the middle dates of the selected period
+  void _showSelectedMiddleColorDialog() async {
+    Color newSelectedColor = await showDialog(
+        context: context,
+        builder: (_) => ColorPickerDialog(
+              selectedColor: selectedPeriodMiddleColor,
+            ));
+
+    if (newSelectedColor != null) {
+      setState(() {
+        selectedPeriodMiddleColor = newSelectedColor;
+      });
+    }
+  }
+
+  void _onSelectedDateChanged(DatePeriod newPeriod) {
+    setState(() {
+      _selectedDate = newPeriod.start;
+      _selectedPeriod = newPeriod;
+    });
+  }
+
+  void _onSelectionError(Object e){
+    if (e is UnselectablePeriodException) print("catch error: $e");
+  }
+
+// ignore: prefer_expression_function_bodies
+  bool _isSelectableCustom (DateTime day) {
+//    return day.weekday < 6;
+    return day.day != DateTime.now().add(Duration(days: 7)).day ;
+  }
+
+  EventDecoration? _eventDecorationBuilder(DateTime date) {
+    List<DateTime> eventsDates = widget.events
+        .map<DateTime>((Event e) => e.date)
+        .toList();
+
+    bool isEventDate = eventsDates.any((DateTime d) => date.year == d.year
+        && date.month == d.month
+        && d.day == date.day);
+
+    if (!isEventDate) return null;
+
+    BoxDecoration roundedBorder = BoxDecoration(
+        color: Colors.blue,
+        border: Border.all(
+          color: Colors.blue,
+        ),
+        borderRadius: BorderRadius.all(Radius.circular(3.0))
+    );
+
+    TextStyle? whiteText = Theme.of(context)
+        .textTheme
+        .bodyText2
+        ?.copyWith(color: Colors.white);
+
+    return isEventDate
+        ? EventDecoration(boxDecoration: roundedBorder, textStyle: whiteText)
+        : null;
+  }
+}

flutter_date_pickers-master/example/lib/event.dart

@@ -0,0 +1,14 @@
+/// Event for the date pickers.
+class Event {
+
+  /// Event's date.
+  final DateTime date;
+
+  /// Event's title.
+  final String dis;
+
+  ///
+  Event(this.date, this.dis)
+      : assert(date != null),
+        assert(dis != null);
+}

flutter_date_pickers-master/example/lib/main.dart

@@ -0,0 +1,121 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
+
+import 'date_pickers_widgets/day_picker_page.dart';
+import 'date_pickers_widgets/days_picker_page.dart';
+import 'date_pickers_widgets/month_picker_page.dart';
+import 'date_pickers_widgets/range_picker_page.dart';
+import 'date_pickers_widgets/week_picker_page.dart';
+
+import 'event.dart';
+
+void main() {
+  runApp(MyApp());
+}
+
+///
+class MyApp extends StatelessWidget {
+
+  @override
+    // ignore: prefer_expression_function_bodies
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      localizationsDelegates: GlobalMaterialLocalizations.delegates,
+         supportedLocales: [
+           const Locale('en', 'US'), // American English
+           const Locale('ru', 'RU'), // Russian
+           const Locale("pt") // Portuguese
+      ],
+      debugShowCheckedModeBanner: false,
+      title: 'Date pickers demo',
+      theme: ThemeData(
+        primarySwatch: Colors.blueGrey,
+      ),
+      home: MyHomePage(
+        title: 'flutter_date_pickers Demo',
+      ),
+    );
+  }
+}
+
+/// Start page.
+class MyHomePage extends StatefulWidget {
+  /// Page title.
+  final String title;
+
+  ///
+  MyHomePage({
+    required this.title,
+    Key? key,
+  }) : super(key: key);
+
+  @override
+  _MyHomePageState createState() => _MyHomePageState();
+}
+
+class _MyHomePageState extends State<MyHomePage> with TickerProviderStateMixin {
+  DateTime startOfPeriod = DateTime.now().subtract(Duration(days: 10));
+  DateTime endOfPeriod = DateTime.now().add(Duration(days: 10));
+  int _selectedTab = 0;
+
+  final List<Widget> datePickers = <Widget>[
+    DayPickerPage(events: events,),
+    DaysPickerPage(),
+    WeekPickerPage(events: events,),
+    RangePickerPage(events: events,),
+    MonthPickerPage()
+  ];
+
+  @override
+    // ignore: prefer_expression_function_bodies
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(
+          widget.title,
+          style: TextStyle(letterSpacing: 1.15),
+        ),
+      ),
+      body: datePickers[_selectedTab],
+      bottomNavigationBar: Theme(
+        data: Theme.of(context).copyWith(
+            canvasColor: Colors.blueGrey,
+            textTheme: Theme.of(context).textTheme.copyWith(
+                caption: TextStyle(color: Colors.white.withOpacity(0.5)))),
+        child: BottomNavigationBar(
+          type: BottomNavigationBarType.fixed,
+          items: [
+            BottomNavigationBarItem(
+                icon: Icon(Icons.date_range), label: "Day"),
+            BottomNavigationBarItem(
+                icon: Icon(Icons.date_range), label: "Days"),
+            BottomNavigationBarItem(
+                icon: Icon(Icons.date_range), label: "Week"),
+            BottomNavigationBarItem(
+                icon: Icon(Icons.date_range), label: "Range"),
+            BottomNavigationBarItem(
+                icon: Icon(Icons.date_range), label: "Month"),
+          ],
+          fixedColor: Colors.yellow,
+          currentIndex: _selectedTab,
+          onTap: (newIndex) {
+            setState(() {
+              _selectedTab = newIndex;
+            });
+          },
+        ),
+      ),
+    );
+  }
+}
+
+/// Mock events.
+final List<Event> events = [
+  Event(DateTime.now(), "Today event"),
+  Event(DateTime.now().subtract(Duration(days: 3)), "Ev1"),
+  Event(DateTime.now().subtract(Duration(days: 13)), "Ev2"),
+  Event(DateTime.now().subtract(Duration(days: 30)), "Ev3"),
+  Event(DateTime.now().add(Duration(days: 3)), "Ev4"),
+  Event(DateTime.now().add(Duration(days: 13)), "Ev5"),
+  Event(DateTime.now().add(Duration(days: 30)), "Ev6"),
+];

flutter_date_pickers-master/example/pubspec.lock

@@ -0,0 +1,181 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  async:
+    dependency: transitive
+    description:
+      name: async
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.5.0"
+  boolean_selector:
+    dependency: transitive
+    description:
+      name: boolean_selector
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  characters:
+    dependency: transitive
+    description:
+      name: characters
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
+  charcode:
+    dependency: transitive
+    description:
+      name: charcode
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
+  clock:
+    dependency: transitive
+    description:
+      name: clock
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.15.0"
+  cupertino_icons:
+    dependency: "direct main"
+    description:
+      name: cupertino_icons
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.2"
+  fake_async:
+    dependency: transitive
+    description:
+      name: fake_async
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
+  flutter:
+    dependency: "direct main"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  flutter_date_pickers:
+    dependency: "direct main"
+    description:
+      path: ".."
+      relative: true
+    source: path
+    version: "0.2.3+1"
+  flutter_localizations:
+    dependency: "direct main"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  flutter_material_color_picker:
+    dependency: "direct main"
+    description:
+      path: "."
+      ref: HEAD
+      resolved-ref: "286596b1e0167877bcdb87011bff77364338ba57"
+      url: "git://github.com/Bwolfs2/flutter_material_color_picker.git"
+    source: git
+    version: "1.0.5-nullsafety.0"
+  flutter_test:
+    dependency: "direct dev"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  intl:
+    dependency: transitive
+    description:
+      name: intl
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.17.0"
+  matcher:
+    dependency: transitive
+    description:
+      name: matcher
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.12.10"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.3.0"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.8.0"
+  sky_engine:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.99"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.8.0"
+  stack_trace:
+    dependency: transitive
+    description:
+      name: stack_trace
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.10.0"
+  stream_channel:
+    dependency: transitive
+    description:
+      name: stream_channel
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
+  test_api:
+    dependency: transitive
+    description:
+      name: test_api
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.2.19"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.3.0"
+  vector_math:
+    dependency: transitive
+    description:
+      name: vector_math
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+sdks:
+  dart: ">=2.12.0 <3.0.0"

flutter_date_pickers-master/example/pubspec.yaml

@@ -0,0 +1,80 @@
+name: flutter_date_picker
+description: A new Flutter application.
+
+# The following defines the version and build number for your application.
+# A version number is three numbers separated by dots, like 1.2.43
+# followed by an optional build number separated by a +.
+# Both the version and the builder number may be overridden in flutter
+# build by specifying --build-name and --build-number, respectively.
+# In Android, build-name is used as versionName while build-number used as versionCode.
+# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
+# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
+# Read more about iOS versioning at
+# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
+version: 1.0.0+1
+
+environment:
+  sdk: ">=2.12.0 <3.0.0"
+
+dependencies:
+  flutter:
+    sdk: flutter
+  flutter_localizations:
+    sdk: flutter
+  flutter_material_color_picker:
+    # null-safety fork
+    git:
+      url: git://github.com/Bwolfs2/flutter_material_color_picker.git
+  flutter_date_pickers:
+    path: ../
+
+  # The following adds the Cupertino Icons font to your application.
+  # Use with the CupertinoIcons class for iOS style icons.
+  cupertino_icons: ^1.0.2
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+
+
+# For information on the generic Dart part of this file, see the
+# following page: https://www.dartlang.org/tools/pub/pubspec
+
+# The following section is specific to Flutter.
+flutter:
+
+  # The following line ensures that the Material Icons font is
+  # included with your application, so that you can use the icons in
+  # the material Icons class.
+  uses-material-design: true
+
+  # To add assets to your application, add an assets section, like this:
+  assets:
+    - images/bg.png
+  #  - images/a_dot_ham.jpeg
+
+  # An image asset can refer to one or more resolution-specific "variants", see
+  # https://flutter.io/assets-and-images/#resolution-aware.
+
+  # For details regarding adding assets from package dependencies, see
+  # https://flutter.io/assets-and-images/#from-packages
+
+  # To add custom fonts to your application, add a fonts section here,
+  # in this "flutter" section. Each entry in this list should have a
+  # "family" key with the font family name, and a "fonts" key with a
+  # list giving the asset and other descriptors for the font. For
+  # example:
+  # fonts:
+  #   - family: Schyler
+  #     fonts:
+  #       - asset: fonts/Schyler-Regular.ttf
+  #       - asset: fonts/Schyler-Italic.ttf
+  #         style: italic
+  #   - family: Trajan Pro
+  #     fonts:
+  #       - asset: fonts/TrajanPro.ttf
+  #       - asset: fonts/TrajanPro_Bold.ttf
+  #         weight: 700
+  #
+  # For details regarding fonts from package dependencies,
+  # see https://flutter.io/custom-fonts/#from-packages

flutter_date_pickers-master/flutter_date_pickers.iml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/lib" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/test" isTestSource="true" />
+      <excludeFolder url="file://$MODULE_DIR$/.dart_tool" />
+      <excludeFolder url="file://$MODULE_DIR$/.idea" />
+      <excludeFolder url="file://$MODULE_DIR$/.pub" />
+      <excludeFolder url="file://$MODULE_DIR$/build" />
+      <excludeFolder url="file://$MODULE_DIR$/example/.dart_tool" />
+      <excludeFolder url="file://$MODULE_DIR$/example/.pub" />
+      <excludeFolder url="file://$MODULE_DIR$/example/build" />
+      <excludeFolder url="file://$MODULE_DIR$/example/ios/Flutter/App.framework/flutter_assets/packages" />
+    </content>
+    <orderEntry type="jdk" jdkName="Android API 25 Platform" jdkType="Android SDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="Dart Packages" level="project" />
+    <orderEntry type="library" name="Dart SDK" level="project" />
+    <orderEntry type="library" name="Flutter Plugins" level="project" />
+  </component>
+</module>

flutter_date_pickers-master/lib/flutter_date_pickers.dart

@@ -0,0 +1,12 @@
+export 'package:flutter_date_pickers/src/date_period.dart';
+export 'package:flutter_date_pickers/src/date_picker_keys.dart';
+export 'package:flutter_date_pickers/src/layout_settings.dart';
+export 'package:flutter_date_pickers/src/date_picker_styles.dart';
+export 'package:flutter_date_pickers/src/event_decoration.dart';
+
+export 'package:flutter_date_pickers/src/day_picker.dart';
+export 'package:flutter_date_pickers/src/week_picker.dart';
+export 'package:flutter_date_pickers/src/month_picker.dart';
+export 'package:flutter_date_pickers/src/range_picker.dart';
+
+export 'package:flutter_date_pickers/src/unselectable_period_error.dart';

flutter_date_pickers-master/lib/src/basic_day_based_widget.dart

@@ -0,0 +1,347 @@
+import 'package:flutter/material.dart';
+
+import 'date_picker_mixin.dart';
+import 'date_picker_styles.dart';
+import 'day_type.dart';
+import 'event_decoration.dart';
+import 'i_selectable_picker.dart';
+import 'layout_settings.dart';
+import 'utils.dart';
+
+/// Widget for date pickers based on days and cover entire month.
+/// Each cell of this picker is day.
+class DayBasedPicker<T> extends StatelessWidget with CommonDatePickerFunctions {
+  /// Selection logic.
+  final ISelectablePicker selectablePicker;
+
+  /// The current date at the time the picker is displayed.
+  final DateTime currentDate;
+
+  /// The earliest date the user is permitted to pick.
+  /// (only year, month and day matter, time doesn't matter)
+  final DateTime firstDate;
+
+  /// The latest date the user is permitted to pick.
+  /// (only year, month and day matter, time doesn't matter)
+  final DateTime lastDate;
+
+  /// The month whose days are displayed by this picker.
+  final DateTime displayedMonth;
+
+  /// Layout settings what can be customized by user
+  final DatePickerLayoutSettings datePickerLayoutSettings;
+
+  ///  Key fo selected month (useful for integration tests)
+  final Key? selectedPeriodKey;
+
+  /// Styles what can be customized by user
+  final DatePickerRangeStyles datePickerStyles;
+
+  /// Builder to get event decoration for each date.
+  ///
+  /// All event styles are overridden by selected styles
+  /// except days with dayType is [DayType.notSelected].
+  final EventDecorationBuilder? eventDecorationBuilder;
+
+  /// Localizations used to get strings for prev/next button tooltips,
+  /// weekday headers and display values for days numbers.
+  final MaterialLocalizations localizations;
+
+  /// Creates main date picker view where every cell is day.
+  DayBasedPicker(
+      {Key? key,
+      required this.currentDate,
+      required this.firstDate,
+      required this.lastDate,
+      required this.displayedMonth,
+      required this.datePickerLayoutSettings,
+      required this.datePickerStyles,
+      required this.selectablePicker,
+      required this.localizations,
+      this.selectedPeriodKey,
+      this.eventDecorationBuilder})
+      : assert(!firstDate.isAfter(lastDate)),
+        super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    final List<Widget> labels = <Widget>[];
+
+    List<Widget> headers = _buildHeaders(localizations);
+    List<Widget> daysBeforeMonthStart = _buildCellsBeforeStart(localizations);
+    List<Widget> monthDays = _buildMonthCells(localizations);
+    List<Widget> daysAfterMonthEnd = _buildCellsAfterEnd(localizations);
+
+    labels.addAll(headers);
+    labels.addAll(daysBeforeMonthStart);
+    labels.addAll(monthDays);
+    labels.addAll(daysAfterMonthEnd);
+
+    return Padding(
+      padding: datePickerLayoutSettings.contentPadding,
+      child: Column(
+        children: <Widget>[
+          Flexible(
+            child: GridView.custom(
+              physics: datePickerLayoutSettings.scrollPhysics,
+              gridDelegate: datePickerLayoutSettings.dayPickerGridDelegate,
+              childrenDelegate:
+                  SliverChildListDelegate(labels, addRepaintBoundaries: false),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  List<Widget> _buildHeaders(MaterialLocalizations localizations) {
+    final int firstDayOfWeekIndex = datePickerStyles.firstDayOfeWeekIndex ??
+        localizations.firstDayOfWeekIndex;
+
+    DayHeaderStyleBuilder dayHeaderStyleBuilder =
+        datePickerStyles.dayHeaderStyleBuilder ??
+            // ignore: avoid_types_on_closure_parameters
+            (int i) => datePickerStyles.dayHeaderStyle;
+
+    List<Widget> headers = getDayHeaders(dayHeaderStyleBuilder,
+        localizations.narrowWeekdays, firstDayOfWeekIndex);
+
+    return headers;
+  }
+
+  List<Widget> _buildCellsBeforeStart(MaterialLocalizations localizations) {
+    List<Widget> result = [];
+
+    final int year = displayedMonth.year;
+    final int month = displayedMonth.month;
+    final int firstDayOfWeekIndex = datePickerStyles.firstDayOfeWeekIndex ??
+        localizations.firstDayOfWeekIndex;
+    final int firstDayOffset =
+        computeFirstDayOffset(year, month, firstDayOfWeekIndex);
+
+    final bool showDates = datePickerLayoutSettings.showPrevMonthEnd;
+    if (showDates) {
+      int prevMonth = month - 1;
+      if (prevMonth < 1) prevMonth = 12;
+      int prevYear = prevMonth == 12 ? year - 1 : year;
+
+      int daysInPrevMonth = DatePickerUtils.getDaysInMonth(prevYear, prevMonth);
+      List<Widget> days = List.generate(firstDayOffset, (index) => index)
+          .reversed
+          .map((i) => daysInPrevMonth - i)
+          .map((day) => _buildCell(prevYear, prevMonth, day))
+          .toList();
+
+      result = days;
+    } else {
+      result = List.generate(firstDayOffset, (_) => const SizedBox.shrink());
+    }
+
+    return result;
+  }
+
+  List<Widget> _buildMonthCells(MaterialLocalizations localizations) {
+    List<Widget> result = [];
+
+    final int year = displayedMonth.year;
+    final int month = displayedMonth.month;
+    final int daysInMonth = DatePickerUtils.getDaysInMonth(year, month);
+
+    for (int i = 1; i <= daysInMonth; i += 1) {
+      Widget dayWidget = _buildCell(year, month, i);
+      result.add(dayWidget);
+    }
+
+    return result;
+  }
+
+  List<Widget> _buildCellsAfterEnd(MaterialLocalizations localizations) {
+    List<Widget> result = [];
+    final bool showDates = datePickerLayoutSettings.showNextMonthStart;
+    if (!showDates) return result;
+
+    final int year = displayedMonth.year;
+    final int month = displayedMonth.month;
+    final int firstDayOfWeekIndex = datePickerStyles.firstDayOfeWeekIndex ??
+        localizations.firstDayOfWeekIndex;
+    final int firstDayOffset =
+        computeFirstDayOffset(year, month, firstDayOfWeekIndex);
+    final int daysInMonth = DatePickerUtils.getDaysInMonth(year, month);
+    final int totalFilledDays = firstDayOffset + daysInMonth;
+
+    int reminder = totalFilledDays % 7;
+    if (reminder == 0) return result;
+    final int emptyCellsNum = 7 - reminder;
+
+    int nextMonth = month + 1;
+    result = List.generate(emptyCellsNum, (i) => i + 1)
+        .map((day) => _buildCell(year, nextMonth, day))
+        .toList();
+
+    return result;
+  }
+
+  Widget _buildCell(int year, int month, int day) {
+    DateTime dayToBuild = DateTime(year, month, day);
+    dayToBuild = _checkDateTime(dayToBuild);
+
+    DayType dayType = selectablePicker.getDayType(dayToBuild);
+
+    Widget dayWidget = _DayCell(
+      day: dayToBuild,
+      currentDate: currentDate,
+      selectablePicker: selectablePicker,
+      datePickerStyles: datePickerStyles,
+      eventDecorationBuilder: eventDecorationBuilder,
+      localizations: localizations,
+    );
+
+    if (dayType != DayType.disabled) {
+      dayWidget = GestureDetector(
+        behavior: HitTestBehavior.opaque,
+        onTap: () => selectablePicker.onDayTapped(dayToBuild),
+        child: dayWidget,
+      );
+    }
+
+    return dayWidget;
+  }
+
+  /// Checks if [DateTime] is same day as [lastDate] or [firstDate]
+  /// and returns dt corrected (with time of [lastDate] or [firstDate]).
+  DateTime _checkDateTime(DateTime dt) {
+    DateTime result = dt;
+
+    // If dayToBuild is the first day we need to save original time for it.
+    if (DatePickerUtils.sameDate(dt, firstDate)) result = firstDate;
+
+    // If dayToBuild is the last day we need to save original time for it.
+    if (DatePickerUtils.sameDate(dt, lastDate)) result = lastDate;
+
+    return result;
+  }
+}
+
+class _DayCell extends StatelessWidget {
+  /// Day for this cell.
+  final DateTime day;
+
+  /// Selection logic.
+  final ISelectablePicker selectablePicker;
+
+  /// Styles what can be customized by user
+  final DatePickerRangeStyles datePickerStyles;
+
+  /// The current date at the time the picker is displayed.
+  final DateTime currentDate;
+
+  /// Builder to get event decoration for each date.
+  ///
+  /// All event styles are overridden by selected styles
+  /// except days with dayType is [DayType.notSelected].
+  final EventDecorationBuilder? eventDecorationBuilder;
+
+  final MaterialLocalizations localizations;
+
+  const _DayCell(
+      {Key? key,
+      required this.day,
+      required this.selectablePicker,
+      required this.datePickerStyles,
+      required this.currentDate,
+      required this.localizations,
+      this.eventDecorationBuilder})
+      : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    DayType dayType = selectablePicker.getDayType(day);
+
+    BoxDecoration? decoration;
+    TextStyle? itemStyle;
+
+    if (dayType != DayType.disabled && dayType != DayType.notSelected) {
+      itemStyle = _getSelectedTextStyle(dayType);
+      decoration = _getSelectedDecoration(dayType);
+    } else if (dayType == DayType.disabled) {
+      itemStyle = datePickerStyles.disabledDateStyle;
+    } else if (DatePickerUtils.sameDate(currentDate, day)) {
+      itemStyle = datePickerStyles.currentDateStyle;
+    } else {
+      itemStyle = datePickerStyles.defaultDateTextStyle;
+    }
+
+    // Merges decoration and textStyle with [EventDecoration].
+    //
+    // Merges only in cases if [dayType] is DayType.notSelected.
+    // If day is current day it is also gets event decoration
+    // instead of decoration for current date.
+    if (dayType == DayType.notSelected && eventDecorationBuilder != null) {
+      EventDecoration? eDecoration = eventDecorationBuilder != null
+          ? eventDecorationBuilder!.call(day)
+          : null;
+
+      decoration = eDecoration?.boxDecoration ?? decoration;
+      itemStyle = eDecoration?.textStyle ?? itemStyle;
+    }
+
+    String semanticLabel = '${localizations.formatDecimal(day.day)}, '
+        '${localizations.formatFullDate(day)}';
+
+    bool daySelected =
+        dayType != DayType.disabled && dayType != DayType.notSelected;
+
+    Widget dayWidget = Container(
+      decoration: decoration,
+      child: Center(
+        child: Semantics(
+          // We want the day of month to be spoken first irrespective of the
+          // locale-specific preferences or TextDirection. This is because
+          // an accessibility user is more likely to be interested in the
+          // day of month before the rest of the date, as they are looking
+          // for the day of month. To do that we prepend day of month to the
+          // formatted full date.
+          label: semanticLabel,
+          selected: daySelected,
+          child: ExcludeSemantics(
+            child: Text(localizations.formatDecimal(day.day), style: itemStyle),
+          ),
+        ),
+      ),
+    );
+
+    return dayWidget;
+  }
+
+  BoxDecoration? _getSelectedDecoration(DayType dayType) {
+    BoxDecoration? result;
+
+    if (dayType == DayType.single) {
+      result = datePickerStyles.selectedSingleDateDecoration;
+    } else if (dayType == DayType.start) {
+      result = datePickerStyles.selectedPeriodStartDecoration;
+    } else if (dayType == DayType.end) {
+      result = datePickerStyles.selectedPeriodLastDecoration;
+    } else {
+      result = datePickerStyles.selectedPeriodMiddleDecoration;
+    }
+
+    return result;
+  }
+
+  TextStyle? _getSelectedTextStyle(DayType dayType) {
+    TextStyle? result;
+
+    if (dayType == DayType.single) {
+      result = datePickerStyles.selectedDateStyle;
+    } else if (dayType == DayType.start) {
+      result = datePickerStyles.selectedPeriodStartTextStyle;
+    } else if (dayType == DayType.end) {
+      result = datePickerStyles.selectedPeriodEndTextStyle;
+    } else {
+      result = datePickerStyles.selectedPeriodMiddleTextStyle;
+    }
+
+    return result;
+  }
+}

flutter_date_pickers-master/lib/src/date_period.dart

@@ -0,0 +1,13 @@
+/// Date period.
+class DatePeriod {
+  /// Start of this period.
+  final DateTime start;
+
+  /// End of this period.
+  final DateTime end;
+
+  ///
+  const DatePeriod(this.start, this.end)
+      : assert(start != null),
+        assert(end != null);
+}

flutter_date_pickers-master/lib/src/date_picker_keys.dart

@@ -0,0 +1,19 @@
+import 'package:flutter/material.dart';
+
+/// Keys for some date picker's widgets.
+///
+/// Useful for integration tests to find widgets.
+class DatePickerKeys {
+  /// Key for the previous page icon widget.
+  final Key previousPageIconKey;
+
+  /// Key for the next page icon widget.
+  final Key nextPageIconKey;
+
+  /// Key for showing month.
+  final Key selectedPeriodKeys;
+
+  ///
+  DatePickerKeys(
+      this.previousPageIconKey, this.nextPageIconKey, this.selectedPeriodKeys);
+}

flutter_date_pickers-master/lib/src/date_picker_mixin.dart

@@ -0,0 +1,99 @@
+import 'package:flutter/material.dart';
+
+import 'date_picker_styles.dart';
+
+///
+mixin CommonDatePickerFunctions {
+
+  /// Builds widgets showing abbreviated days of week. The first widget in the
+  /// returned list corresponds to the first day of week for the current locale.
+  ///
+  /// Examples:
+  ///
+  /// ```
+  /// ┌ Sunday is the first day of week in the US (en_US)
+  /// |
+  /// S M T W T F S  <-- the returned list contains these widgets
+  /// _ _ _ _ _ 1 2
+  /// 3 4 5 6 7 8 9
+  ///
+  /// ┌ But it's Monday in the UK (en_GB)
+  /// |
+  /// M T W T F S S  <-- the returned list contains these widgets
+  /// _ _ _ _ 1 2 3
+  /// 4 5 6 7 8 9 10
+  /// ```
+  List<Widget> getDayHeaders(
+      DayHeaderStyleBuilder headerStyleBuilder,
+      List<String> narrowWeekdays,
+      int firstDayOfWeekIndex) {
+
+    final List<Widget> result = <Widget>[];
+
+    for (int i = firstDayOfWeekIndex; true; i = (i + 1) % 7) {
+      DayHeaderStyle? headerStyle = headerStyleBuilder(i);
+      final String weekday = narrowWeekdays[i];
+
+      Widget header = ExcludeSemantics(
+        child: Container(
+          decoration: headerStyle?.decoration,
+          child: Center(
+              child: Text(
+                  weekday,
+                  style: headerStyle?.textStyle
+              )
+          ),
+        ),
+      );
+
+      result.add(header);
+      if (i == (firstDayOfWeekIndex - 1) % 7) {
+        break;
+      }
+    }
+    return result;
+  }
+
+  /// Computes the offset from the first day of week that the first day of the
+  /// [month] falls on.
+  ///
+  /// For example, September 1, 2017 falls on a Friday, which in the calendar
+  /// localized for United States English appears as:
+  ///
+  /// ```
+  /// S M T W T F S
+  /// _ _ _ _ _ 1 2
+  /// ```
+  ///
+  /// The offset for the first day of the months is the number of leading blanks
+  /// in the calendar, i.e. 5.
+  ///
+  /// The same date localized for the Russian calendar has a different offset,
+  /// because the first day of week is Monday rather than Sunday:
+  ///
+  /// ```
+  /// M T W T F S S
+  /// _ _ _ _ 1 2 3
+  /// ```
+  ///
+  /// So the offset is 4, rather than 5.
+  ///
+  /// This code consolidates the following:
+  ///
+  /// - [DateTime.weekday] provides a 1-based index into days of week, with 1
+  ///   falling on Monday.
+  /// - [MaterialLocalizations.firstDayOfWeekIndex] provides a 0-based index
+  ///   into the [MaterialLocalizations.narrowWeekdays] list.
+  /// - [MaterialLocalizations.narrowWeekdays] list provides localized names of
+  ///   days of week, always starting with Sunday and ending with Saturday.
+  int computeFirstDayOffset(
+      int year, int month, int firstDayOfWeekFromSunday) {
+    // 0-based day of week, with 0 representing Monday.
+    final int weekdayFromMonday = DateTime(year, month).weekday - 1;
+    // firstDayOfWeekFromSunday recomputed to be Monday-based
+    final int firstDayOfWeekFromMonday = (firstDayOfWeekFromSunday - 1) % 7;
+    // Number of days between the first day of week appearing on the calendar,
+    // and the day corresponding to the 1-st of the month.
+    return (weekdayFromMonday - firstDayOfWeekFromMonday) % 7;
+  }
+}

flutter_date_pickers-master/lib/src/date_picker_styles.dart

@@ -0,0 +1,386 @@
+import 'package:flutter/material.dart';
+import 'range_picker.dart';
+import 'week_picker.dart';
+
+/// 0 points to Sunday, and 6 points to Saturday.
+typedef DayHeaderStyleBuilder = DayHeaderStyle? Function(int dayOfTheWeek);
+
+/// Common styles for date pickers.
+///
+/// To define more styles for date pickers which allow select some range
+/// (e.g. [RangePicker], [WeekPicker]) use [DatePickerRangeStyles].
+@immutable
+class DatePickerStyles {
+  /// Styles for title of displayed period
+  /// (e.g. month for day picker and year for month picker).
+  final TextStyle? displayedPeriodTitle;
+
+  /// Style for the number of current date.
+  final TextStyle? currentDateStyle;
+
+  /// Style for the numbers of disabled dates.
+  final TextStyle? disabledDateStyle;
+
+  /// Style for the number of selected date.
+  final TextStyle? selectedDateStyle;
+
+  /// Used for date which is neither current nor disabled nor selected.
+  final TextStyle? defaultDateTextStyle;
+
+  /// Day cell decoration for selected date in case only one date is selected.
+  final BoxDecoration? selectedSingleDateDecoration;
+
+  /// Style for the day header.
+  ///
+  /// If you need to customize day header's style depends on day of the week
+  /// use [dayHeaderStyleBuilder] instead.
+  final DayHeaderStyle? dayHeaderStyle;
+
+  /// Builder to customize styles for day headers depends on day of the week.
+  /// Where 0 points to Sunday and 6 points to Saturday.
+  ///
+  /// Builder must return not null value for every weekday from 0 to 6.
+  ///
+  /// If styles should be the same for any day of the week
+  /// use [dayHeaderStyle] instead.
+  final DayHeaderStyleBuilder? dayHeaderStyleBuilder;
+
+  /// Widget which will be shown left side of the shown page title.
+  /// User goes to previous data period by click on it.
+  final Widget prevIcon;
+
+  /// Widget which will be shown right side of the shown page title.
+  /// User goes to next data period by click on it.
+  final Widget nextIcon;
+
+  /// Index of the first day of week, where 0 points to Sunday, and 6 points to
+  /// Saturday. Must not be less 0 or more then 6.
+  ///
+  /// Can be null. In this case value from current locale will be used.
+  final int? firstDayOfeWeekIndex;
+
+  /// Styles for date picker.
+  DatePickerStyles({
+    this.displayedPeriodTitle,
+    this.currentDateStyle,
+    this.disabledDateStyle,
+    this.selectedDateStyle,
+    this.selectedSingleDateDecoration,
+    this.defaultDateTextStyle,
+    this.dayHeaderStyleBuilder,
+    this.dayHeaderStyle,
+    this.firstDayOfeWeekIndex,
+    this.prevIcon = const Icon(Icons.chevron_left),
+    this.nextIcon = const Icon(Icons.chevron_right)
+  }) : assert(!(dayHeaderStyle != null && dayHeaderStyleBuilder != null),
+        "Should be only one from: dayHeaderStyleBuilder, dayHeaderStyle."),
+       assert(dayHeaderStyleBuilder == null
+           || _validateDayHeaderStyleBuilder(dayHeaderStyleBuilder),
+        "dayHeaderStyleBuilder must return not null value from every weekday "
+            "(from 0 to 6)."),
+       assert(_validateFirstDayOfWeek(firstDayOfeWeekIndex),
+        "firstDayOfeWeekIndex must be null or in correct range (from 0 to 6).");
+
+  /// Return new [DatePickerStyles] object where fields
+  /// with null values set with defaults from theme.
+  DatePickerStyles fulfillWithTheme(ThemeData theme) {
+    Color accentColor = theme.accentColor;
+
+    TextStyle? _displayedPeriodTitle =
+        displayedPeriodTitle ?? theme.textTheme.subtitle1;
+    TextStyle? _currentDateStyle = currentDateStyle ??
+        theme.textTheme.bodyText1?.copyWith(color: theme.accentColor);
+    TextStyle? _disabledDateStyle = disabledDateStyle ??
+        theme.textTheme.bodyText2?.copyWith(color: theme.disabledColor);
+    TextStyle? _selectedDateStyle =
+        selectedDateStyle ?? theme.accentTextTheme.bodyText1;
+    TextStyle? _defaultDateTextStyle =
+        defaultDateTextStyle ?? theme.textTheme.bodyText2;
+    BoxDecoration _selectedSingleDateDecoration =
+        selectedSingleDateDecoration ??
+            BoxDecoration(
+                color: accentColor,
+                borderRadius: const BorderRadius.all(Radius.circular(10.0)));
+
+    DayHeaderStyle? _dayHeaderStyle = dayHeaderStyle;
+    if (dayHeaderStyleBuilder == null && _dayHeaderStyle == null) {
+      _dayHeaderStyle = DayHeaderStyle(textStyle: theme.textTheme.caption);
+    }
+
+    return DatePickerStyles(
+        disabledDateStyle: _disabledDateStyle,
+        currentDateStyle: _currentDateStyle,
+        displayedPeriodTitle: _displayedPeriodTitle,
+        selectedDateStyle: _selectedDateStyle,
+        selectedSingleDateDecoration: _selectedSingleDateDecoration,
+        defaultDateTextStyle: _defaultDateTextStyle,
+        dayHeaderStyle: _dayHeaderStyle,
+        dayHeaderStyleBuilder: dayHeaderStyleBuilder,
+        nextIcon: nextIcon,
+        prevIcon: prevIcon
+    );
+  }
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(this, other)) return true;
+    if (other.runtimeType != runtimeType) return false;
+
+    return other is DatePickerStyles
+        && other.displayedPeriodTitle == displayedPeriodTitle
+        && other.currentDateStyle == currentDateStyle
+        && other.disabledDateStyle == disabledDateStyle
+        && other.selectedDateStyle == selectedDateStyle
+        && other.defaultDateTextStyle == defaultDateTextStyle
+        && other.selectedSingleDateDecoration == selectedSingleDateDecoration
+        && other.dayHeaderStyle == dayHeaderStyle
+        && other.dayHeaderStyleBuilder == dayHeaderStyleBuilder
+        && other.prevIcon == prevIcon
+        && other.nextIcon == nextIcon
+        && other.firstDayOfeWeekIndex == firstDayOfeWeekIndex;
+  }
+
+  @override
+  int get hashCode =>
+     hashValues(
+        displayedPeriodTitle,
+        currentDateStyle,
+        disabledDateStyle,
+        selectedDateStyle,
+        defaultDateTextStyle,
+        selectedSingleDateDecoration,
+        dayHeaderStyle,
+        dayHeaderStyleBuilder,
+        prevIcon,
+        nextIcon,
+        firstDayOfeWeekIndex
+    );
+
+  static bool _validateDayHeaderStyleBuilder(DayHeaderStyleBuilder builder) {
+    List<int> weekdays = const [0, 1, 2, 3, 4, 5, 6];
+
+    // ignore: avoid_types_on_closure_parameters
+    bool valid = weekdays.every((int weekday) => builder(weekday) != null);
+
+    return valid;
+  }
+
+  static bool _validateFirstDayOfWeek(int? index) {
+    if (index == null) return true;
+
+    bool valid = index >= 0 && index <= 6;
+
+    return valid;
+  }
+}
+
+/// Styles for date pickers which allow select some range
+/// (e.g. RangePicker, WeekPicker).
+@immutable
+class DatePickerRangeStyles extends DatePickerStyles {
+  /// Decoration for the first date of the selected range.
+  final BoxDecoration? selectedPeriodStartDecoration;
+
+  /// Text style for the first date of the selected range.
+  ///
+  /// If null - default [DatePickerStyles.selectedDateStyle] will be used.
+  final TextStyle? selectedPeriodStartTextStyle;
+
+  /// Decoration for the last date of the selected range.
+  final BoxDecoration? selectedPeriodLastDecoration;
+
+  /// Text style for the last date of the selected range.
+  ///
+  /// If null - default [DatePickerStyles.selectedDateStyle] will be used.
+  final TextStyle? selectedPeriodEndTextStyle;
+
+  /// Decoration for the date of the selected range
+  /// which is not first date and not end date of this range.
+  ///
+  /// If there is only one date selected
+  /// [DatePickerStyles.selectedSingleDateDecoration] will be used.
+  final BoxDecoration? selectedPeriodMiddleDecoration;
+
+  /// Text style for the middle date of the selected range.
+  ///
+  /// If null - default [DatePickerStyles.selectedDateStyle] will be used.
+  final TextStyle? selectedPeriodMiddleTextStyle;
+
+  /// Return new [DatePickerRangeStyles] object
+  /// where fields with null values set with defaults from given theme.
+  @override
+  DatePickerRangeStyles fulfillWithTheme(ThemeData theme) {
+    Color accentColor = theme.accentColor;
+
+    DatePickerStyles commonStyles = super.fulfillWithTheme(theme);
+
+    final BoxDecoration _selectedPeriodStartDecoration =
+        selectedPeriodStartDecoration ??
+            BoxDecoration(
+              color: accentColor,
+              borderRadius: const BorderRadius.only(
+                  topLeft: Radius.circular(10.0),
+                  bottomLeft: Radius.circular(10.0)),
+            );
+
+    final BoxDecoration _selectedPeriodLastDecoration =
+        selectedPeriodLastDecoration ??
+            BoxDecoration(
+              color: accentColor,
+              borderRadius: const BorderRadius.only(
+                  topRight: Radius.circular(10.0),
+                  bottomRight: Radius.circular(10.0)),
+            );
+
+    final BoxDecoration _selectedPeriodMiddleDecoration =
+        selectedPeriodMiddleDecoration ??
+            BoxDecoration(
+              color: accentColor,
+              shape: BoxShape.rectangle,
+            );
+
+    final TextStyle? _selectedPeriodStartTextStyle =
+        selectedPeriodStartTextStyle ?? commonStyles.selectedDateStyle;
+
+    final TextStyle? _selectedPeriodMiddleTextStyle =
+        selectedPeriodMiddleTextStyle ?? commonStyles.selectedDateStyle;
+
+    final TextStyle? _selectedPeriodEndTextStyle =
+        selectedPeriodEndTextStyle ?? commonStyles.selectedDateStyle;
+
+    return DatePickerRangeStyles(
+        disabledDateStyle: commonStyles.disabledDateStyle,
+        currentDateStyle: commonStyles.currentDateStyle,
+        displayedPeriodTitle: commonStyles.displayedPeriodTitle,
+        selectedDateStyle: commonStyles.selectedDateStyle,
+        selectedSingleDateDecoration: commonStyles.selectedSingleDateDecoration,
+        defaultDateTextStyle: commonStyles.defaultDateTextStyle,
+        dayHeaderStyle: commonStyles.dayHeaderStyle,
+        dayHeaderStyleBuilder: commonStyles.dayHeaderStyleBuilder,
+        firstDayOfWeekIndex: firstDayOfeWeekIndex,
+        selectedPeriodStartDecoration: _selectedPeriodStartDecoration,
+        selectedPeriodMiddleDecoration: _selectedPeriodMiddleDecoration,
+        selectedPeriodLastDecoration: _selectedPeriodLastDecoration,
+        selectedPeriodStartTextStyle: _selectedPeriodStartTextStyle,
+        selectedPeriodMiddleTextStyle: _selectedPeriodMiddleTextStyle,
+        selectedPeriodEndTextStyle: _selectedPeriodEndTextStyle,
+    );
+  }
+
+  /// Styles for the pickers that allows to select range ([RangePicker],
+  /// [WeekPicker]).
+  DatePickerRangeStyles({
+    displayedPeriodTitle,
+    currentDateStyle,
+    disabledDateStyle,
+    selectedDateStyle,
+    selectedSingleDateDecoration,
+    defaultDateTextStyle,
+    dayHeaderStyle,
+    dayHeaderStyleBuilder,
+    Widget nextIcon = const Icon(Icons.chevron_right),
+    Widget prevIcon = const Icon(Icons.chevron_left),
+    firstDayOfWeekIndex,
+    this.selectedPeriodLastDecoration,
+    this.selectedPeriodMiddleDecoration,
+    this.selectedPeriodStartDecoration,
+    this.selectedPeriodStartTextStyle,
+    this.selectedPeriodMiddleTextStyle,
+    this.selectedPeriodEndTextStyle,
+  }) : super(
+            displayedPeriodTitle: displayedPeriodTitle,
+            currentDateStyle: currentDateStyle,
+            disabledDateStyle: disabledDateStyle,
+            selectedDateStyle: selectedDateStyle,
+            selectedSingleDateDecoration: selectedSingleDateDecoration,
+            defaultDateTextStyle: defaultDateTextStyle,
+            dayHeaderStyle: dayHeaderStyle,
+            dayHeaderStyleBuilder: dayHeaderStyleBuilder,
+            nextIcon: nextIcon,
+            prevIcon: prevIcon,
+            firstDayOfeWeekIndex: firstDayOfWeekIndex
+       );
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(this, other)) return true;
+    if (other.runtimeType != runtimeType) return false;
+
+    return other is DatePickerRangeStyles
+        && other.selectedPeriodStartDecoration == selectedPeriodStartDecoration
+        && other.selectedPeriodStartTextStyle == selectedPeriodStartTextStyle
+        && other.selectedPeriodLastDecoration == selectedPeriodLastDecoration
+        && other.selectedPeriodEndTextStyle == selectedPeriodEndTextStyle
+        && other.selectedPeriodMiddleDecoration ==selectedPeriodMiddleDecoration
+        && other.selectedPeriodMiddleTextStyle == selectedPeriodMiddleTextStyle
+        && other.displayedPeriodTitle == displayedPeriodTitle
+        && other.currentDateStyle == currentDateStyle
+        && other.disabledDateStyle == disabledDateStyle
+        && other.selectedDateStyle == selectedDateStyle
+        && other.defaultDateTextStyle == defaultDateTextStyle
+        && other.selectedSingleDateDecoration == selectedSingleDateDecoration
+        && other.dayHeaderStyle == dayHeaderStyle
+        && other.dayHeaderStyleBuilder == dayHeaderStyleBuilder
+        && other.prevIcon == prevIcon
+        && other.nextIcon == nextIcon
+        && other.firstDayOfeWeekIndex == firstDayOfeWeekIndex;
+  }
+
+  @override
+  int get hashCode =>
+     hashValues(
+      selectedPeriodStartDecoration,
+      selectedPeriodStartTextStyle,
+      selectedPeriodLastDecoration,
+      selectedPeriodEndTextStyle,
+      selectedPeriodMiddleDecoration,
+      selectedPeriodMiddleTextStyle,
+      displayedPeriodTitle,
+      currentDateStyle,
+      disabledDateStyle,
+      selectedDateStyle,
+      defaultDateTextStyle,
+      selectedSingleDateDecoration,
+      dayHeaderStyle,
+      dayHeaderStyleBuilder,
+      prevIcon,
+      nextIcon,
+      firstDayOfeWeekIndex
+    );
+}
+
+
+/// User styles for the day header in date picker.
+@immutable
+class DayHeaderStyle {
+  /// If null - textTheme.caption from the Theme will be used.
+  final TextStyle? textStyle;
+
+  /// If null - no decoration will be applied for the day header;
+  final BoxDecoration? decoration;
+
+  /// Creates styles for the day headers in date pickers.
+  ///
+  /// See also:
+  /// * [DatePickerStyles.dayHeaderStyleBuilder]
+  const DayHeaderStyle({
+    this.textStyle,
+    this.decoration
+  });
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(this, other)) return true;
+    if (other.runtimeType != runtimeType) return false;
+
+    return other is DayHeaderStyle
+        && other.textStyle == textStyle
+        && other.decoration == decoration;
+  }
+
+  @override
+  int get hashCode => hashValues(
+      textStyle,
+      decoration
+    );
+}

flutter_date_pickers-master/lib/src/day_based_changable_picker.dart

@@ -0,0 +1,363 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
+
+import 'package:intl/intl.dart' as intl;
+
+import 'basic_day_based_widget.dart';
+import 'date_picker_keys.dart';
+import 'date_picker_styles.dart';
+import 'day_based_changeable_picker_presenter.dart';
+import 'day_picker_selection.dart';
+import 'day_type.dart';
+import 'event_decoration.dart';
+import 'i_selectable_picker.dart';
+import 'layout_settings.dart';
+import 'month_navigation_row.dart';
+import 'semantic_sorting.dart';
+import 'typedefs.dart';
+import 'utils.dart';
+
+
+const Locale _defaultLocale = Locale('en', 'US');
+
+/// Date picker based on [DayBasedPicker] picker (for days, weeks, ranges).
+/// Allows select previous/next month.
+class DayBasedChangeablePicker<T> extends StatefulWidget {
+  /// The currently selected date.
+  ///
+  /// This date is highlighted in the picker.
+  final DayPickerSelection selection;
+
+  /// Called when the user picks a new T.
+  final ValueChanged<T> onChanged;
+
+  /// Called when the error was thrown after user selection.
+  final OnSelectionError? onSelectionError;
+
+  /// The earliest date the user is permitted to pick.
+  final DateTime firstDate;
+
+  /// The latest date the user is permitted to pick.
+  final DateTime lastDate;
+
+  /// Date for defining what month should be shown initially.
+  ///
+  /// Default value is [selection.earliest].
+  final DateTime initiallyShowDate;
+
+  /// Layout settings what can be customized by user
+  final DatePickerLayoutSettings datePickerLayoutSettings;
+
+  /// Styles what can be customized by user
+  final DatePickerRangeStyles datePickerStyles;
+
+  /// Some keys useful for integration tests
+  final DatePickerKeys? datePickerKeys;
+
+  /// Logic for date selections.
+  final ISelectablePicker<T> selectablePicker;
+
+  /// Builder to get event decoration for each date.
+  ///
+  /// All event styles are overridden by selected styles
+  /// except days with dayType is [DayType.notSelected].
+  final EventDecorationBuilder? eventDecorationBuilder;
+
+  /// Called when the user changes the month
+  final ValueChanged<DateTime>? onMonthChanged;
+
+  /// Create picker with option to change month.
+  DayBasedChangeablePicker(
+      {Key? key,
+      required this.selection,
+      required this.onChanged,
+      required this.firstDate,
+      required this.lastDate,
+      required this.datePickerLayoutSettings,
+      required this.datePickerStyles,
+      required this.selectablePicker,
+      DateTime? initiallyShownDate,
+      this.datePickerKeys,
+      this.onSelectionError,
+      this.eventDecorationBuilder,
+      this.onMonthChanged})
+      : initiallyShowDate = initiallyShownDate ?? selection.earliest,
+        super(key: key);
+
+  @override
+  State<DayBasedChangeablePicker<T>> createState() =>
+      _DayBasedChangeablePickerState<T>();
+}
+
+// todo: Check initial selection and call onSelectionError in case it has error
+// todo: (ISelectablePicker.curSelectionIsCorrupted);
+class _DayBasedChangeablePickerState<T>
+    extends State<DayBasedChangeablePicker<T>> {
+  DateTime _todayDate = DateTime.now();
+
+  Locale curLocale = _defaultLocale;
+
+  MaterialLocalizations localizations = _defaultLocalizations;
+
+  PageController _dayPickerController = PageController();
+
+  // Styles from widget fulfilled with current Theme.
+  DatePickerRangeStyles _resultStyles = DatePickerRangeStyles();
+
+  DayBasedChangeablePickerPresenter _presenter = _defaultPresenter;
+
+  Timer? _timer;
+  StreamSubscription<T>? _changesSubscription;
+
+  @override
+  void initState() {
+    super.initState();
+
+    // Initially display the pre-selected date.
+    final int monthPage = _getInitPage();
+    _dayPickerController = PageController(initialPage: monthPage);
+
+    _changesSubscription = widget.selectablePicker.onUpdate
+        .listen((newSelectedDate) => widget.onChanged(newSelectedDate))
+          ..onError((e) => widget.onSelectionError != null
+              ? widget.onSelectionError!.call(e)
+              : print(e.toString()));
+
+    _updateCurrentDate();
+    _initPresenter();
+  }
+
+  @override
+  void didUpdateWidget(DayBasedChangeablePicker<T> oldWidget) {
+    super.didUpdateWidget(oldWidget);
+
+    if (widget.datePickerStyles != oldWidget.datePickerStyles) {
+      final ThemeData theme = Theme.of(context);
+      _resultStyles = widget.datePickerStyles.fulfillWithTheme(theme);
+    }
+
+    if (widget.selectablePicker != oldWidget.selectablePicker) {
+      _changesSubscription = widget.selectablePicker.onUpdate
+          .listen((newSelectedDate) => widget.onChanged(newSelectedDate))
+            ..onError((e) => widget.onSelectionError != null
+                ? widget.onSelectionError!.call(e)
+                : print(e.toString()));
+    }
+  }
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+    curLocale = Localizations.localeOf(context);
+
+    MaterialLocalizations? curLocalizations =
+        Localizations.of<MaterialLocalizations>(context, MaterialLocalizations);
+    if (curLocalizations != null && localizations != curLocalizations) {
+      localizations = curLocalizations;
+      _initPresenter();
+    }
+
+    final ThemeData theme = Theme.of(context);
+    _resultStyles = widget.datePickerStyles.fulfillWithTheme(theme);
+  }
+
+  @override
+  // ignore: prefer_expression_function_bodies
+  Widget build(BuildContext context) {
+    return SizedBox(
+        width: widget.datePickerLayoutSettings.monthPickerPortraitWidth,
+        height: widget.datePickerLayoutSettings.maxDayPickerHeight,
+        child: Column(
+          children: <Widget>[
+            widget.datePickerLayoutSettings.hideMonthNavigationRow
+                ? const SizedBox()
+                : SizedBox(
+                    height: widget.datePickerLayoutSettings.dayPickerRowHeight,
+                    child: Padding(
+                        //match _DayPicker main layout padding
+                        padding: widget.datePickerLayoutSettings.contentPadding,
+                        child: _buildMonthNavigationRow()),
+                  ),
+            Expanded(
+              child: Semantics(
+                sortKey: MonthPickerSortKey.calendar,
+                child: _buildDayPickerPageView(),
+              ),
+            ),
+          ],
+        ));
+  }
+
+  @override
+  void dispose() {
+    _timer?.cancel();
+    _dayPickerController.dispose();
+    _changesSubscription?.cancel();
+    widget.selectablePicker.dispose();
+    _presenter.dispose();
+    super.dispose();
+  }
+
+  void _updateCurrentDate() {
+    _todayDate = DateTime.now();
+    final DateTime tomorrow =
+        DateTime(_todayDate.year, _todayDate.month, _todayDate.day + 1);
+    Duration timeUntilTomorrow = tomorrow.difference(_todayDate);
+    timeUntilTomorrow +=
+        const Duration(seconds: 1); // so we don't miss it by rounding
+    _timer?.cancel();
+    _timer = Timer(timeUntilTomorrow, () {
+      setState(_updateCurrentDate);
+    });
+  }
+
+  // ignore: prefer_expression_function_bodies
+  Widget _buildMonthNavigationRow() {
+    return StreamBuilder<DayBasedChangeablePickerState>(
+        stream: _presenter.data,
+        initialData: _presenter.lastVal,
+        builder: (context, snapshot) {
+          if (!snapshot.hasData) {
+            return const SizedBox();
+          }
+
+          DayBasedChangeablePickerState state = snapshot.data!;
+
+          return MonthNavigationRow(
+            previousPageIconKey: widget.datePickerKeys?.previousPageIconKey,
+            nextPageIconKey: widget.datePickerKeys?.nextPageIconKey,
+            previousMonthTooltip: state.prevTooltip,
+            nextMonthTooltip: state.nextTooltip,
+            onPreviousMonthTapped:
+                state.isFirstMonth ? null : _presenter.gotoPrevMonth,
+            onNextMonthTapped:
+                state.isLastMonth ? null : _presenter.gotoNextMonth,
+            title: Text(
+              state.curMonthDis,
+              key: widget.datePickerKeys?.selectedPeriodKeys,
+              style: _resultStyles.displayedPeriodTitle,
+            ),
+            nextIcon: widget.datePickerStyles.nextIcon,
+            prevIcon: widget.datePickerStyles.prevIcon,
+          );
+        });
+  }
+
+  Widget _buildDayPickerPageView() => PageView.builder(
+        controller: _dayPickerController,
+        scrollDirection: Axis.horizontal,
+        itemCount:
+            DatePickerUtils.monthDelta(widget.firstDate, widget.lastDate) + 1,
+        itemBuilder: _buildCalendar,
+        onPageChanged: _handleMonthPageChanged,
+      );
+
+  Widget _buildCalendar(BuildContext context, int index) {
+    final DateTime targetDate =
+        DatePickerUtils.addMonthsToMonthDate(widget.firstDate, index);
+
+    return DayBasedPicker(
+      key: ValueKey<DateTime>(targetDate),
+      selectablePicker: widget.selectablePicker,
+      currentDate: _todayDate,
+      firstDate: widget.firstDate,
+      lastDate: widget.lastDate,
+      displayedMonth: targetDate,
+      datePickerLayoutSettings: widget.datePickerLayoutSettings,
+      selectedPeriodKey: widget.datePickerKeys?.selectedPeriodKeys,
+      datePickerStyles: _resultStyles,
+      eventDecorationBuilder: widget.eventDecorationBuilder,
+      localizations: localizations,
+    );
+  }
+
+  // Returns appropriate date to be shown for init.
+  // If [widget.initiallyShowDate] is out of bounds [widget.firstDate]
+  // - [widget.lastDate], nearest bound will be used.
+  DateTime _getCheckedInitialDate() {
+    DateTime initiallyShowDateChecked = widget.initiallyShowDate;
+    if (initiallyShowDateChecked.isBefore(widget.firstDate)) {
+      initiallyShowDateChecked = widget.firstDate;
+    }
+
+    if (initiallyShowDateChecked.isAfter(widget.lastDate)) {
+      initiallyShowDateChecked = widget.lastDate;
+    }
+
+    return initiallyShowDateChecked;
+  }
+
+  int _getInitPage() {
+    final initialDate = _getCheckedInitialDate();
+    int initPage = DatePickerUtils.monthDelta(
+        widget.firstDate, initialDate
+    );
+
+    return initPage;
+  }
+
+  void _initPresenter() {
+    _presenter.dispose();
+
+    _presenter = DayBasedChangeablePickerPresenter(
+        firstDate: widget.firstDate,
+        lastDate: widget.lastDate,
+        localizations: localizations,
+        showPrevMonthDates: widget.datePickerLayoutSettings.showPrevMonthEnd,
+        showNextMonthDates: widget.datePickerLayoutSettings.showNextMonthStart,
+        firstDayOfWeekIndex: widget.datePickerStyles.firstDayOfeWeekIndex);
+    _presenter.data.listen(_onStateChanged);
+
+    // date used to define what month should be shown
+    DateTime initSelection = _getCheckedInitialDate();
+
+    // Give information about initial selection to presenter.
+    // It should be done after first frame when PageView is already created.
+    // Otherwise event from presenter will cause a error.
+    WidgetsBinding.instance!.addPostFrameCallback((_) {
+      _presenter.setSelectedDate(initSelection);
+    });
+  }
+
+  void _onStateChanged(DayBasedChangeablePickerState newState) {
+    DateTime newMonth = newState.currentMonth;
+    final int monthPage =
+        DatePickerUtils.monthDelta(widget.firstDate, newMonth);
+    _dayPickerController.animateToPage(monthPage,
+        duration: const Duration(milliseconds: 200), curve: Curves.easeInOut);
+  }
+
+  void _handleMonthPageChanged(int monthPage) {
+    DateTime firstMonth = widget.firstDate;
+    DateTime newMonth = DateTime(firstMonth.year, firstMonth.month + monthPage);
+    _presenter.changeMonth(newMonth);
+
+    widget.onMonthChanged?.call(newMonth);
+  }
+
+  static MaterialLocalizations get _defaultLocalizations =>
+      MaterialLocalizationEn(
+        twoDigitZeroPaddedFormat:
+            intl.NumberFormat('00', _defaultLocale.toString()),
+        fullYearFormat: intl.DateFormat.y(_defaultLocale.toString()),
+        longDateFormat: intl.DateFormat.yMMMMEEEEd(_defaultLocale.toString()),
+        shortMonthDayFormat: intl.DateFormat.MMMd(_defaultLocale.toString()),
+        decimalFormat:
+            intl.NumberFormat.decimalPattern(_defaultLocale.toString()),
+        shortDateFormat: intl.DateFormat.yMMMd(_defaultLocale.toString()),
+        mediumDateFormat: intl.DateFormat.MMMEd(_defaultLocale.toString()),
+        compactDateFormat: intl.DateFormat.yMd(_defaultLocale.toString()),
+        yearMonthFormat: intl.DateFormat.yMMMM(_defaultLocale.toString()),
+      );
+
+  static DayBasedChangeablePickerPresenter get _defaultPresenter =>
+      DayBasedChangeablePickerPresenter(
+          firstDate: DateTime.now(),
+          lastDate: DateTime.now(),
+          localizations: _defaultLocalizations,
+          showPrevMonthDates: false,
+          showNextMonthDates: false,
+          firstDayOfWeekIndex: 1);
+}

flutter_date_pickers-master/lib/src/day_based_changeable_picker_presenter.dart

@@ -0,0 +1,177 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+
+import 'day_based_changable_picker.dart';
+import 'utils.dart';
+
+/// Presenter for [DayBasedChangeablePicker] to handle month changes.
+class DayBasedChangeablePickerPresenter {
+  /// First date user can select.
+  final DateTime firstDate;
+
+  /// Last date user can select.
+  final DateTime lastDate;
+  
+  /// Localization.
+  final MaterialLocalizations localizations;
+  
+  /// If empty day cells before 1st day of showing month should be filled with
+  /// date from the last week of the previous month.
+  final bool showPrevMonthDates;
+
+  /// If empty day cells after last day of showing month should be filled with
+  /// date from the first week of the next month.
+  final bool showNextMonthDates;
+  
+  /// Index of the first day in week.
+  /// 0 is Sunday, 6 is Saturday.
+  final int firstDayOfWeekIndex;
+  
+  /// View model stream for the [DayBasedChangeablePicker].
+  Stream<DayBasedChangeablePickerState> get data => _controller.stream;
+
+  /// Last view model state of the [DayBasedChangeablePicker].
+  DayBasedChangeablePickerState? get lastVal => _lastVal;
+
+  /// Creates presenter to use for [DayBasedChangeablePicker].
+  DayBasedChangeablePickerPresenter({
+    required this.firstDate,
+    required this.lastDate,
+    required this.localizations,
+    required this.showPrevMonthDates,
+    required this.showNextMonthDates,
+    int? firstDayOfWeekIndex
+  }): firstDayOfWeekIndex = firstDayOfWeekIndex
+          ?? localizations.firstDayOfWeekIndex;
+
+  /// Update state according to the [selectedDate] if it needs.
+  void setSelectedDate(DateTime selectedDate) {
+    // bool firstAndLastNotNull = _firstShownDate != null
+    //     && _lastShownDate != null;
+    //
+    // bool selectedOnCurPage =  firstAndLastNotNull
+    //     && !selectedDate.isBefore(_firstShownDate)
+    //     && !selectedDate.isAfter(_lastShownDate);
+    // if (selectedOnCurPage) return;
+
+    changeMonth(selectedDate);
+  }
+
+  /// Update state to show previous month.
+  void gotoPrevMonth() {
+    DateTime oldCur = _lastVal!.currentMonth;
+    DateTime newCurDate = DateTime(oldCur.year, oldCur.month - 1);
+
+    changeMonth(newCurDate);
+  }
+
+  /// Update state to show next month.
+  void gotoNextMonth() {
+    DateTime oldCur = _lastVal!.currentMonth;
+    DateTime newCurDate = DateTime(oldCur.year, oldCur.month + 1);
+
+    changeMonth(newCurDate);
+  }
+
+  /// Update state to change month to the [newMonth].
+  void changeMonth(DateTime newMonth) {
+    bool sameMonth = _lastVal != null
+        && DatePickerUtils.sameMonth(_lastVal!.currentMonth, newMonth);
+    if (sameMonth) return;
+
+    int monthPage = DatePickerUtils.monthDelta(firstDate, newMonth);
+    DateTime prevMonth = DatePickerUtils
+        .addMonthsToMonthDate(firstDate, monthPage - 1);
+
+    DateTime curMonth = DatePickerUtils
+        .addMonthsToMonthDate(firstDate, monthPage);
+
+    DateTime nextMonth = DatePickerUtils
+        .addMonthsToMonthDate(firstDate, monthPage + 1);
+
+    String prevMonthStr = localizations.formatMonthYear(prevMonth);
+    String curMonthStr = localizations.formatMonthYear(curMonth);
+    String nextMonthStr = localizations.formatMonthYear(nextMonth);
+
+    bool isFirstMonth = DatePickerUtils.sameMonth(curMonth, firstDate);
+    bool isLastMonth = DatePickerUtils.sameMonth(curMonth, lastDate);
+
+    String? prevTooltip = isFirstMonth
+        ? null
+        : "${localizations.previousMonthTooltip} $prevMonthStr";
+
+    String? nextTooltip = isLastMonth
+        ? null
+        : "${localizations.nextMonthTooltip} $nextMonthStr";
+
+    DayBasedChangeablePickerState newState = DayBasedChangeablePickerState(
+        currentMonth: curMonth,
+        curMonthDis: curMonthStr,
+        prevMonthDis: prevMonthStr,
+        nextMonthDis: nextMonthStr,
+        prevTooltip: prevTooltip,
+        nextTooltip: nextTooltip,
+        isFirstMonth: isFirstMonth,
+        isLastMonth: isLastMonth
+    );
+
+    _updateState(newState);
+  }
+
+  /// Closes controller.
+  void dispose () {
+    _controller.close();
+  }
+
+  void _updateState(DayBasedChangeablePickerState newState) {
+    _lastVal = newState;
+    _controller.add(newState);
+  }
+
+  final StreamController<DayBasedChangeablePickerState> _controller =
+    StreamController.broadcast();
+
+  DayBasedChangeablePickerState? _lastVal;
+}
+
+
+/// View Model for the [DayBasedChangeablePicker].
+class DayBasedChangeablePickerState {
+
+  /// Display name of the current month.
+  final String curMonthDis;
+
+  /// Display name of the previous month.
+  final String prevMonthDis;
+
+  /// Display name of the next month.
+  final String nextMonthDis;
+
+  /// Tooltip for the previous month icon.
+  final String? prevTooltip;
+
+  /// Tooltip for the next month icon.
+  final String? nextTooltip;
+
+  /// Tooltip for the current month icon.
+  final DateTime currentMonth;
+
+  /// If selected month is the month contains last date user can select.
+  final bool isLastMonth;
+
+  /// If selected month is the month contains first date user can select.
+  final bool isFirstMonth;
+
+  /// Creates view model for the [DayBasedChangeablePicker].
+  DayBasedChangeablePickerState({
+    required this.curMonthDis,
+    required this.prevMonthDis,
+    required this.nextMonthDis,
+    required this.currentMonth,
+    required this.isLastMonth,
+    required this.isFirstMonth,
+    this.prevTooltip,
+    this.nextTooltip,
+  });
+}

flutter_date_pickers-master/lib/src/day_picker.dart

@@ -0,0 +1,189 @@
+import 'package:flutter/material.dart';
+
+import 'date_picker_keys.dart';
+import 'date_picker_styles.dart';
+import 'day_based_changable_picker.dart';
+import 'day_picker_selection.dart';
+import 'day_type.dart';
+import 'event_decoration.dart';
+import 'i_selectable_picker.dart';
+import 'layout_settings.dart';
+
+/// Date picker for selection one day.
+class DayPicker<T extends Object> extends StatelessWidget {
+  DayPicker._({Key? key,
+    required this.onChanged,
+    required this.firstDate,
+    required this.lastDate,
+    required this.selectionLogic,
+    required this.selection,
+    this.initiallyShowDate,
+    this.datePickerLayoutSettings = const DatePickerLayoutSettings(),
+    this.datePickerStyles,
+    this.datePickerKeys,
+    this.selectableDayPredicate,
+    this.eventDecorationBuilder,
+    this.onMonthChanged}) : super(key: key);
+
+  /// Creates a day picker where only one single day can be selected.
+  ///
+  /// See also:
+  /// * [DayPicker.multi] - day picker where many single days can be selected.
+  static DayPicker<DateTime> single({
+    Key? key,
+    required DateTime selectedDate,
+    required ValueChanged<DateTime> onChanged,
+    required DateTime firstDate,
+    required DateTime lastDate,
+    DatePickerLayoutSettings datePickerLayoutSettings
+      = const DatePickerLayoutSettings(),
+    DateTime? initiallyShowDate,
+    DatePickerRangeStyles? datePickerStyles,
+    DatePickerKeys? datePickerKeys,
+    SelectableDayPredicate? selectableDayPredicate,
+    EventDecorationBuilder? eventDecorationBuilder,
+    ValueChanged<DateTime>? onMonthChanged
+  })
+  {
+    assert(!firstDate.isAfter(lastDate));
+    assert(!lastDate.isBefore(firstDate));
+    assert(!selectedDate.isBefore(firstDate));
+    assert(!selectedDate.isAfter(lastDate));
+    assert(initiallyShowDate == null
+        || !initiallyShowDate.isAfter(lastDate));
+    assert(initiallyShowDate == null
+    || !initiallyShowDate.isBefore(firstDate));
+
+    final selection = DayPickerSingleSelection(selectedDate);
+    final selectionLogic = DaySelectable(
+    selectedDate, firstDate, lastDate,
+    selectableDayPredicate: selectableDayPredicate);
+
+    return DayPicker<DateTime>._(
+        onChanged: onChanged,
+        firstDate: firstDate,
+        lastDate: lastDate,
+        initiallyShowDate: initiallyShowDate,
+        selectionLogic: selectionLogic,
+        selection: selection,
+        eventDecorationBuilder: eventDecorationBuilder,
+        onMonthChanged: onMonthChanged,
+        selectableDayPredicate: selectableDayPredicate,
+        datePickerKeys: datePickerKeys,
+        datePickerStyles: datePickerStyles,
+        datePickerLayoutSettings: datePickerLayoutSettings,
+    );
+  }
+
+
+  /// Creates a day picker  where many single days can be selected.
+  ///
+  /// See also:
+  /// * [DayPicker.single] - day picker where only one single day
+  /// can be selected.
+  static DayPicker<List<DateTime>> multi({Key? key,
+    required List<DateTime> selectedDates,
+    required ValueChanged<List<DateTime>> onChanged,
+    required DateTime firstDate,
+    required DateTime lastDate,
+    DatePickerLayoutSettings datePickerLayoutSettings
+      = const DatePickerLayoutSettings(),
+    DateTime? initiallyShowDate,
+    DatePickerRangeStyles? datePickerStyles,
+    DatePickerKeys? datePickerKeys,
+    SelectableDayPredicate? selectableDayPredicate,
+    EventDecorationBuilder? eventDecorationBuilder,
+    ValueChanged<DateTime>? onMonthChanged})
+  {
+    assert(!firstDate.isAfter(lastDate));
+    assert(!lastDate.isBefore(firstDate));
+    assert(initiallyShowDate == null
+        || !initiallyShowDate.isAfter(lastDate));
+    assert(initiallyShowDate == null
+    || !initiallyShowDate.isBefore(lastDate));
+
+    final selection =  DayPickerMultiSelection(selectedDates);
+    final selectionLogic =  DayMultiSelectable(
+        selectedDates, firstDate, lastDate,
+        selectableDayPredicate: selectableDayPredicate);
+
+    return DayPicker<List<DateTime>>._(
+      onChanged: onChanged,
+      firstDate: firstDate,
+      lastDate: lastDate,
+      initiallyShowDate: initiallyShowDate,
+      selectionLogic: selectionLogic,
+      selection: selection,
+      eventDecorationBuilder: eventDecorationBuilder,
+      onMonthChanged: onMonthChanged,
+      selectableDayPredicate: selectableDayPredicate,
+      datePickerKeys: datePickerKeys,
+      datePickerStyles: datePickerStyles,
+      datePickerLayoutSettings: datePickerLayoutSettings,
+    );
+  }
+
+  /// The currently selected date.
+  ///
+  /// This date is highlighted in the picker.
+  final DayPickerSelection selection;
+
+  /// Called when the user picks a day.
+  final ValueChanged<T> onChanged;
+
+  /// The earliest date the user is permitted to pick.
+  final DateTime firstDate;
+
+  /// The latest date the user is permitted to pick.
+  final DateTime lastDate;
+
+  /// Date for defining what month should be shown initially.
+  ///
+  /// In case of null earliest of the [selection] will be shown.
+  final DateTime? initiallyShowDate;
+
+  /// Layout settings what can be customized by user
+  final DatePickerLayoutSettings datePickerLayoutSettings;
+
+  /// Styles what can be customized by user
+  final DatePickerRangeStyles? datePickerStyles;
+
+  /// Some keys useful for integration tests
+  final DatePickerKeys? datePickerKeys;
+
+  /// Function returns if day can be selected or not.
+  ///
+  /// If null
+  final SelectableDayPredicate? selectableDayPredicate;
+
+  /// Builder to get event decoration for each date.
+  ///
+  /// All event styles are overriden by selected styles
+  /// except days with dayType is [DayType.notSelected].
+  final EventDecorationBuilder? eventDecorationBuilder;
+
+  // Called when the user changes the month.
+  /// New DateTime object represents first day of new month and 00:00 time.
+  final ValueChanged<DateTime>? onMonthChanged;
+
+  /// Logic to handle user's selections.
+  final ISelectablePicker<T> selectionLogic;
+  
+  @override
+  // ignore: prefer_expression_function_bodies
+  Widget build(BuildContext context) {
+    return DayBasedChangeablePicker<T>(
+      selectablePicker: selectionLogic,
+      selection: selection,
+      firstDate: firstDate,
+      lastDate: lastDate,
+      initiallyShownDate: initiallyShowDate,
+      onChanged: onChanged,
+      datePickerLayoutSettings: datePickerLayoutSettings,
+      datePickerStyles: datePickerStyles ?? DatePickerRangeStyles(),
+      datePickerKeys: datePickerKeys,
+      eventDecorationBuilder: eventDecorationBuilder,
+      onMonthChanged: onMonthChanged,
+    );
+  }
+}

flutter_date_pickers-master/lib/src/day_picker_selection.dart

@@ -0,0 +1,120 @@
+import 'date_period.dart';
+import 'utils.dart';
+
+/// Base class for day based pickers selection.
+abstract class DayPickerSelection {
+
+  /// If this is before [dateTime].
+  bool isBefore(DateTime dateTime);
+
+  /// If this is after [dateTime].
+  bool isAfter(DateTime dateTime);
+
+  /// Returns earliest [DateTime] in this selection.
+  DateTime get earliest;
+
+  /// If this selection is empty.
+  bool get isEmpty;
+
+  /// If this selection is not empty.
+  bool get isNotEmpty;
+
+  /// Constructor to allow children to have constant constructor.
+  const DayPickerSelection();
+}
+
+/// Selection with only one selected date.
+///
+/// See also:
+/// * [DayPickerMultiSelection] - selection with one or many single dates.
+/// * [DayPickerRangeSelection] - date period selection.
+class DayPickerSingleSelection extends DayPickerSelection {
+
+  /// Selected date.
+  final DateTime selectedDate;
+
+  /// Creates selection with only one selected date.
+  const DayPickerSingleSelection(this.selectedDate)
+      : assert(selectedDate != null);
+
+  @override
+  bool isAfter(DateTime dateTime) => selectedDate.isAfter(dateTime);
+
+  @override
+  bool isBefore(DateTime dateTime) => selectedDate.isAfter(dateTime);
+
+  @override
+  DateTime get earliest => selectedDate;
+
+  @override
+  bool get isEmpty => selectedDate == null;
+
+  @override
+  bool get isNotEmpty => selectedDate != null;
+}
+
+
+/// Selection with one or many single dates.
+///
+/// See also:
+/// * [DayPickerSingleSelection] - selection with only one selected date.
+/// * [DayPickerRangeSelection] - date period selection.
+class DayPickerMultiSelection extends DayPickerSelection {
+
+  /// List of the selected dates.
+  final List<DateTime> selectedDates;
+
+  /// Selection with one or many single dates.
+  DayPickerMultiSelection(this.selectedDates)
+      : assert(selectedDates != null);
+
+
+  @override
+  bool isAfter(DateTime dateTime)
+  => selectedDates.every((d) => d.isAfter(dateTime));
+
+  @override
+  bool isBefore(DateTime dateTime)
+  => selectedDates.every((d) => d.isBefore(dateTime));
+
+  @override
+  DateTime get earliest => DatePickerUtils.getEarliestFromList(selectedDates);
+
+  @override
+  bool get isEmpty => selectedDates.isEmpty;
+
+  @override
+  bool get isNotEmpty => selectedDates.isNotEmpty;
+}
+
+
+
+/// Date period selection.
+///
+/// See also:
+/// * [DayPickerSingleSelection] - selection with only one selected date.
+/// * [DayPickerMultiSelection] - selection with one or many single dates.
+class DayPickerRangeSelection extends DayPickerSelection {
+
+  /// Selected period.
+  final DatePeriod selectedRange;
+
+  /// Date period selection.
+  const DayPickerRangeSelection(this.selectedRange)
+      : assert(selectedRange != null);
+
+  @override
+  DateTime get earliest => selectedRange.start;
+
+  @override
+  bool isAfter(DateTime dateTime) => selectedRange.start.isAfter(dateTime);
+
+  @override
+  bool isBefore(DateTime dateTime) => selectedRange.end.isBefore(dateTime);
+
+  @override
+  bool get isEmpty => selectedRange == null;
+
+  @override
+  bool get isNotEmpty => selectedRange != null;
+}

flutter_date_pickers-master/lib/src/day_type.dart

@@ -0,0 +1,20 @@
+/// Type of the day in day based date picker.
+enum DayType {
+  /// start of the selected period
+  start,
+
+  /// middle of the selected period
+  middle,
+
+  /// end of the selected period
+  end,
+
+  /// selected single day
+  single,
+
+  /// disabled day
+  disabled,
+
+  /// not selected day (but not disabled)
+  notSelected
+}

flutter_date_pickers-master/lib/src/event_decoration.dart

@@ -0,0 +1,35 @@
+import 'package:flutter/widgets.dart';
+
+import 'day_picker.dart';
+import 'range_picker.dart';
+import 'week_picker.dart';
+
+
+/// Signature for function which is used to set set specific decoration for
+/// some days in [DayPicker], [WeekPicker] and [RangePicker].
+///
+/// See also:
+/// * [DayPicker.eventDecorationBuilder]
+/// * [WeekPicker.eventDecorationBuilder]
+/// * [RangePicker.eventDecorationBuilder]
+typedef EventDecorationBuilder = EventDecoration? Function(DateTime date);
+
+
+/// Class to store styles for event (specific day in the date picker).
+@immutable
+class EventDecoration {
+
+  /// Cell decoration for the specific day in the date picker (event).
+  final BoxDecoration? boxDecoration;
+
+  /// Style for number of the specific day in the date picker (event).
+  final TextStyle? textStyle;
+
+  /// Creates decoration for special day.
+  ///
+  /// Used for [EventDecorationBuilder] function which is usually passed to
+  /// [DayPicker.eventDecorationBuilder], [WeekPicker.eventDecorationBuilder]
+  /// and [RangePicker.eventDecorationBuilder] to set specific decoration for
+  /// some days.
+  const EventDecoration({this.boxDecoration, this.textStyle});
+}

flutter_date_pickers-master/lib/src/i_selectable_picker.dart

@@ -0,0 +1,537 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+
+import 'date_period.dart';
+import 'day_picker.dart' as day_picker;
+import 'day_type.dart';
+import 'range_picker.dart';
+import 'unselectable_period_error.dart';
+import 'utils.dart';
+
+/// Interface for selection logic of the different date pickers.
+///
+/// T - is selection type.
+abstract class ISelectablePicker<T> {
+  /// The earliest date the user is permitted to pick.
+  /// (only year, month and day matter, time doesn't matter)
+  final DateTime firstDate;
+
+  /// The latest date the user is permitted to pick.
+  /// (only year, month and day matter, time doesn't matter)
+  final DateTime lastDate;
+
+  /// Function returns if day can be selected or not.
+  final SelectableDayPredicate _selectableDayPredicate;
+
+  /// StreamController for new selection (T).
+  @protected
+  StreamController<T> onUpdateController = StreamController<T>.broadcast();
+
+  /// Stream with new selected (T) event.
+  ///
+  /// Throws [UnselectablePeriodException]
+  /// if there is any custom disabled date in selected.
+  Stream<T> get onUpdate => onUpdateController.stream;
+
+  /// Constructor with required fields that used in non-abstract methods
+  /// ([isDisabled]).
+  ISelectablePicker(this.firstDate, this.lastDate,
+      {SelectableDayPredicate? selectableDayPredicate})
+      : _selectableDayPredicate =
+            selectableDayPredicate ?? _defaultSelectableDayPredicate;
+
+  /// If current selection exists and includes day/days that can't be selected
+  /// according to the [_selectableDayPredicate]'
+  bool get curSelectionIsCorrupted;
+
+  /// Returns [DayType] for given [day].
+  DayType getDayType(DateTime day);
+
+  /// Call when user tap on the day cell.
+  void onDayTapped(DateTime selectedDate);
+
+  /// Returns if given day is disabled.
+  ///
+  /// Returns weather given day before the beginning of the [firstDate]
+  /// or after the end of the [lastDate].
+  ///
+  /// If [_selectableDayPredicate] is set checks it as well.
+  @protected
+  bool isDisabled(DateTime day) {
+    final DateTime beginOfTheFirstDay =
+        DatePickerUtils.startOfTheDay(firstDate);
+    final DateTime endOfTheLastDay = DatePickerUtils.endOfTheDay(lastDate);
+    final bool customDisabled =
+        _selectableDayPredicate != null ? !_selectableDayPredicate(day) : false;
+
+    return day.isAfter(endOfTheLastDay) ||
+        day.isBefore(beginOfTheFirstDay) ||
+        customDisabled;
+  }
+
+  /// Closes [onUpdateController].
+  /// After it [onUpdateController] can't get new events.
+  void dispose() {
+    onUpdateController.close();
+  }
+
+  static bool _defaultSelectableDayPredicate(_) => true;
+}
+
+/// Selection logic for WeekPicker.
+class WeekSelectable extends ISelectablePicker<DatePeriod> {
+  /// Initialized in ctor body.
+  late DateTime _firstDayOfSelectedWeek;
+
+  /// Initialized in ctor body.
+  late DateTime _lastDayOfSelectedWeek;
+
+  // It is int from 0 to 6 where 0 points to Sunday and 6 points to Saturday.
+  // According to MaterialLocalization.firstDayOfWeekIndex.
+  final int _firstDayOfWeekIndex;
+
+  @override
+  bool get curSelectionIsCorrupted => _checkCurSelection();
+
+  /// Creates selection logic for WeekPicker.
+  ///
+  /// Entire week will be selected if
+  /// * it is between [firstDate] and [lastDate]
+  /// * it doesn't include unselectable days according to the
+  ///   [selectableDayPredicate]
+  ///
+  /// If one or more days of the week are before [firstDate]
+  /// first selection date will be the same as [firstDate].
+  ///
+  /// If one or more days of the week are after [lastDate]
+  /// last selection date will be the same as [lastDate].
+  ///
+  /// If one or more days of week are not selectable according to the
+  /// [selectableDayPredicate] nothing will be returned as selection
+  /// but [UnselectablePeriodException] will be thrown.
+  WeekSelectable(DateTime selectedDate, this._firstDayOfWeekIndex,
+      DateTime firstDate, DateTime lastDate,
+      {SelectableDayPredicate? selectableDayPredicate})
+      : super(firstDate, lastDate,
+            selectableDayPredicate: selectableDayPredicate) {
+    DatePeriod selectedWeek = _getNewSelectedPeriod(selectedDate);
+    _firstDayOfSelectedWeek = selectedWeek.start;
+    _lastDayOfSelectedWeek = selectedWeek.end;
+    _checkCurSelection();
+  }
+
+  @override
+  DayType getDayType(DateTime date) {
+    DayType result;
+
+    DatePeriod selectedPeriod =
+        DatePeriod(_firstDayOfSelectedWeek, _lastDayOfSelectedWeek);
+    bool selectedPeriodIsBroken =
+        _disabledDatesInPeriod(selectedPeriod).isNotEmpty;
+
+    if (isDisabled(date)) {
+      result = DayType.disabled;
+    } else if (_isDaySelected(date) && !selectedPeriodIsBroken) {
+      DateTime firstNotDisabledDayOfSelectedWeek =
+          _firstDayOfSelectedWeek.isBefore(firstDate)
+              ? firstDate
+              : _firstDayOfSelectedWeek;
+
+      DateTime lastNotDisabledDayOfSelectedWeek =
+          _lastDayOfSelectedWeek.isAfter(lastDate)
+              ? lastDate
+              : _lastDayOfSelectedWeek;
+
+      if (DatePickerUtils.sameDate(date, firstNotDisabledDayOfSelectedWeek) &&
+          DatePickerUtils.sameDate(date, lastNotDisabledDayOfSelectedWeek)) {
+        result = DayType.single;
+      } else if (DatePickerUtils.sameDate(date, _firstDayOfSelectedWeek) ||
+          DatePickerUtils.sameDate(date, firstDate)) {
+        result = DayType.start;
+      } else if (DatePickerUtils.sameDate(date, _lastDayOfSelectedWeek) ||
+          DatePickerUtils.sameDate(date, lastDate)) {
+        result = DayType.end;
+      } else {
+        result = DayType.middle;
+      }
+    } else {
+      result = DayType.notSelected;
+    }
+
+    return result;
+  }
+
+  @override
+  void onDayTapped(DateTime selectedDate) {
+    DatePeriod newPeriod = _getNewSelectedPeriod(selectedDate);
+    List<DateTime> customDisabledDays = _disabledDatesInPeriod(newPeriod);
+
+    customDisabledDays.isEmpty
+        ? onUpdateController.add(newPeriod)
+        : onUpdateController.addError(
+            UnselectablePeriodException(customDisabledDays, newPeriod));
+  }
+
+  // Returns new selected period according to tapped date.
+  // Doesn't check custom disabled days.
+  // You have to check it separately if it needs.
+  DatePeriod _getNewSelectedPeriod(DateTime tappedDay) {
+    DatePeriod newPeriod;
+
+    DateTime firstDayOfTappedWeek =
+        DatePickerUtils.getFirstDayOfWeek(tappedDay, _firstDayOfWeekIndex);
+    DateTime lastDayOfTappedWeek =
+        DatePickerUtils.getLastDayOfWeek(tappedDay, _firstDayOfWeekIndex);
+
+    DateTime firstNotDisabledDayOfSelectedWeek =
+        firstDayOfTappedWeek.isBefore(firstDate)
+            ? firstDate
+            : firstDayOfTappedWeek;
+
+    DateTime lastNotDisabledDayOfSelectedWeek =
+        lastDayOfTappedWeek.isAfter(lastDate) ? lastDate : lastDayOfTappedWeek;
+
+    newPeriod = DatePeriod(
+        firstNotDisabledDayOfSelectedWeek, lastNotDisabledDayOfSelectedWeek);
+    return newPeriod;
+  }
+
+  bool _isDaySelected(DateTime date) {
+    DateTime startOfTheStartDay =
+        DatePickerUtils.startOfTheDay(_firstDayOfSelectedWeek);
+    DateTime endOfTheLastDay =
+        DatePickerUtils.endOfTheDay(_lastDayOfSelectedWeek);
+    return !(date.isBefore(startOfTheStartDay) ||
+        date.isAfter(endOfTheLastDay));
+  }
+
+  List<DateTime> _disabledDatesInPeriod(DatePeriod period) {
+    List<DateTime> result = <DateTime>[];
+
+    var date = period.start;
+
+    while (!date.isAfter(period.end)) {
+      if (isDisabled(date)) result.add(date);
+
+      date = date.add(Duration(days: 1));
+    }
+
+    return result;
+  }
+
+  // Returns if current selection contains disabled dates.
+  // Returns false if there is no any selection.
+  bool _checkCurSelection() {
+    bool noSelection =
+        _firstDayOfSelectedWeek == null || _lastDayOfSelectedWeek == null;
+
+    if (noSelection) return false;
+
+    DatePeriod selectedPeriod =
+        DatePeriod(_firstDayOfSelectedWeek, _lastDayOfSelectedWeek);
+    List<DateTime> disabledDates = _disabledDatesInPeriod(selectedPeriod);
+
+    bool selectedPeriodIsBroken = disabledDates.isNotEmpty;
+    return selectedPeriodIsBroken;
+  }
+}
+
+/// Selection logic for [day_picker.DayPicker].
+class DaySelectable extends ISelectablePicker<DateTime> {
+  /// Currently selected date.
+  DateTime selectedDate;
+
+  @override
+  bool get curSelectionIsCorrupted => _checkCurSelection();
+
+  /// Creates selection logic for [day_picker.DayPicker].
+  ///
+  /// Every day can be selected if it is between [firstDate] and [lastDate]
+  /// and not unselectable according to the [selectableDayPredicate].
+  ///
+  /// If day is not selectable according to the [selectableDayPredicate]
+  /// nothing will be returned as selection
+  /// but [UnselectablePeriodException] will be thrown.
+  DaySelectable(this.selectedDate, DateTime firstDate, DateTime lastDate,
+      {SelectableDayPredicate? selectableDayPredicate})
+      : super(firstDate, lastDate,
+            selectableDayPredicate: selectableDayPredicate);
+
+  @override
+  DayType getDayType(DateTime date) {
+    DayType result;
+
+    if (isDisabled(date)) {
+      result = DayType.disabled;
+    } else if (_isDaySelected(date)) {
+      result = DayType.single;
+    } else {
+      result = DayType.notSelected;
+    }
+
+    return result;
+  }
+
+  @override
+  void onDayTapped(DateTime selectedDate) {
+    DateTime newSelected = DatePickerUtils.sameDate(firstDate, selectedDate)
+        ? selectedDate
+        : DateTime(selectedDate.year, selectedDate.month, selectedDate.day);
+    onUpdateController.add(newSelected);
+  }
+
+  bool _isDaySelected(DateTime date) =>
+      DatePickerUtils.sameDate(date, selectedDate);
+
+  // Returns if current selection is disabled
+  // according to the [_selectableDayPredicate].
+  //
+  // Returns false if there is no any selection.
+  bool _checkCurSelection() {
+    if (selectedDate == null) return false;
+    bool selectedIsBroken = _selectableDayPredicate(selectedDate);
+
+    return selectedIsBroken;
+  }
+}
+
+/// Selection logic for [day_picker.DayPicker] where many single days can be
+/// selected.
+class DayMultiSelectable extends ISelectablePicker<List<DateTime>> {
+  /// Currently selected dates.
+  List<DateTime> selectedDates;
+
+  /// Creates selection logic for [day_picker.DayPicker].
+  ///
+  /// Every day can be selected if it is between [firstDate] and [lastDate]
+  /// and not unselectable according to the [selectableDayPredicate].
+  ///
+  /// If day is not selectable according to the [selectableDayPredicate]
+  /// nothing will be returned as selection
+  /// but [UnselectablePeriodException] will be thrown.
+  DayMultiSelectable(this.selectedDates, DateTime firstDate, DateTime lastDate,
+      {SelectableDayPredicate? selectableDayPredicate})
+      : super(firstDate, lastDate,
+            selectableDayPredicate: selectableDayPredicate);
+
+  @override
+  bool get curSelectionIsCorrupted => _checkCurSelection();
+
+  @override
+  DayType getDayType(DateTime date) {
+    DayType result;
+
+    if (isDisabled(date)) {
+      result = DayType.disabled;
+    } else if (_isDaySelected(date)) {
+      result = DayType.single;
+    } else {
+      result = DayType.notSelected;
+    }
+
+    return result;
+  }
+
+  @override
+  void onDayTapped(DateTime selectedDate) {
+    bool alreadyExist =
+        selectedDates.any((d) => DatePickerUtils.sameDate(d, selectedDate));
+
+    if (alreadyExist) {
+      List<DateTime> newSelectedDates = List.from(selectedDates)
+        ..removeWhere((d) => DatePickerUtils.sameDate(d, selectedDate));
+
+      onUpdateController.add(newSelectedDates);
+    } else {
+      DateTime newSelected = DatePickerUtils.sameDate(firstDate, selectedDate)
+          ? selectedDate
+          : DateTime(selectedDate.year, selectedDate.month, selectedDate.day);
+
+      List<DateTime> newSelectedDates = List.from(selectedDates)
+        ..add(newSelected);
+
+      onUpdateController.add(newSelectedDates);
+    }
+  }
+
+  bool _isDaySelected(DateTime date) =>
+      selectedDates.any((d) => DatePickerUtils.sameDate(date, d));
+
+  // Returns if current selection is disabled
+  // according to the [_selectableDayPredicate].
+  //
+  // Returns false if there is no any selection.
+  bool _checkCurSelection() {
+    if (selectedDates == null || selectedDates.isEmpty) return false;
+    bool selectedIsBroken = selectedDates.every(_selectableDayPredicate);
+
+    return selectedIsBroken;
+  }
+}
+
+/// Selection logic for [RangePicker].
+class RangeSelectable extends ISelectablePicker<DatePeriod> {
+  /// Initially selected period.
+  DatePeriod selectedPeriod;
+
+  @override
+  bool get curSelectionIsCorrupted => _checkCurSelection();
+
+  /// Creates selection logic for [RangePicker].
+  ///
+  /// Period can be selected if
+  /// * it is between [firstDate] and [lastDate]
+  /// * it doesn't include unselectable days according to the
+  ///   [selectableDayPredicate]
+  ///
+  ///
+  /// If one or more days of the period are not selectable according to the
+  /// [selectableDayPredicate] nothing will be returned as selection
+  /// but [UnselectablePeriodException] will be thrown.
+  RangeSelectable(this.selectedPeriod, DateTime firstDate, DateTime lastDate,
+      {SelectableDayPredicate? selectableDayPredicate})
+      : super(firstDate, lastDate,
+            selectableDayPredicate: selectableDayPredicate);
+
+  @override
+  DayType getDayType(DateTime date) {
+    DayType result;
+
+    bool selectedPeriodIsBroken =
+        _disabledDatesInPeriod(selectedPeriod).isNotEmpty;
+
+    if (isDisabled(date)) {
+      result = DayType.disabled;
+    } else if (_isDaySelected(date) && !selectedPeriodIsBroken) {
+      if (DatePickerUtils.sameDate(date, selectedPeriod.start) &&
+          DatePickerUtils.sameDate(date, selectedPeriod.end)) {
+        result = DayType.single;
+      } else if (DatePickerUtils.sameDate(date, selectedPeriod.start) ||
+          DatePickerUtils.sameDate(date, firstDate)) {
+        result = DayType.start;
+      } else if (DatePickerUtils.sameDate(date, selectedPeriod.end) ||
+          DatePickerUtils.sameDate(date, lastDate)) {
+        result = DayType.end;
+      } else {
+        result = DayType.middle;
+      }
+    } else {
+      result = DayType.notSelected;
+    }
+
+    return result;
+  }
+
+  @override
+  void onDayTapped(DateTime selectedDate) {
+    DatePeriod newPeriod = _getNewSelectedPeriod(selectedDate);
+    List<DateTime> customDisabledDays = _disabledDatesInPeriod(newPeriod);
+
+    customDisabledDays.isEmpty
+        ? onUpdateController.add(newPeriod)
+        : onUpdateController.addError(
+            UnselectablePeriodException(customDisabledDays, newPeriod));
+  }
+
+  // Returns new selected period according to tapped date.
+  DatePeriod _getNewSelectedPeriod(DateTime tappedDate) {
+    // check if was selected only one date and we should generate period
+    bool sameDate =
+        DatePickerUtils.sameDate(selectedPeriod.start, selectedPeriod.end);
+    DatePeriod newPeriod;
+
+    // Was selected one-day-period.
+    // With new user tap will be generated 2 dates as a period.
+    if (sameDate) {
+      // if user tap on the already selected single day
+      bool selectedAlreadySelectedDay =
+          DatePickerUtils.sameDate(tappedDate, selectedPeriod.end);
+      bool isSelectedFirstDay = DatePickerUtils.sameDate(tappedDate, firstDate);
+      bool isSelectedLastDay = DatePickerUtils.sameDate(tappedDate, lastDate);
+
+      if (selectedAlreadySelectedDay) {
+        if (isSelectedFirstDay && isSelectedLastDay) {
+          newPeriod = DatePeriod(firstDate, lastDate);
+        } else if (isSelectedFirstDay) {
+          newPeriod =
+              DatePeriod(firstDate, DatePickerUtils.endOfTheDay(firstDate));
+        } else if (isSelectedLastDay) {
+          newPeriod =
+              DatePeriod(DatePickerUtils.startOfTheDay(lastDate), lastDate);
+        } else {
+          newPeriod = DatePeriod(DatePickerUtils.startOfTheDay(tappedDate),
+              DatePickerUtils.endOfTheDay(tappedDate));
+        }
+      } else {
+        DateTime startOfTheSelectedDay =
+            DatePickerUtils.startOfTheDay(selectedPeriod.start);
+
+        if (!tappedDate.isAfter(startOfTheSelectedDay)) {
+          newPeriod = DatePickerUtils.sameDate(tappedDate, firstDate)
+              ? DatePeriod(firstDate, selectedPeriod.end)
+              : DatePeriod(DatePickerUtils.startOfTheDay(tappedDate),
+                  selectedPeriod.end);
+        } else {
+          newPeriod = DatePickerUtils.sameDate(tappedDate, lastDate)
+              ? DatePeriod(selectedPeriod.start, lastDate)
+              : DatePeriod(selectedPeriod.start,
+                  DatePickerUtils.endOfTheDay(tappedDate));
+        }
+      }
+
+      // Was selected 2 dates as a period.
+      // With new user tap new one-day-period will be generated.
+    } else {
+      bool sameAsFirst = DatePickerUtils.sameDate(tappedDate, firstDate);
+      bool sameAsLast = DatePickerUtils.sameDate(tappedDate, lastDate);
+
+      if (sameAsFirst && sameAsLast) {
+        newPeriod = DatePeriod(firstDate, lastDate);
+      } else if (sameAsFirst) {
+        newPeriod =
+            DatePeriod(firstDate, DatePickerUtils.endOfTheDay(firstDate));
+      } else if (sameAsLast) {
+        newPeriod =
+            DatePeriod(DatePickerUtils.startOfTheDay(tappedDate), lastDate);
+      } else {
+        newPeriod = DatePeriod(DatePickerUtils.startOfTheDay(tappedDate),
+            DatePickerUtils.endOfTheDay(tappedDate));
+      }
+    }
+
+    return newPeriod;
+  }
+
+  // Returns if current selection contains disabled dates.
+  // Returns false if there is no any selection.
+  bool _checkCurSelection() {
+    if (selectedPeriod == null) return false;
+    List<DateTime> disabledDates = _disabledDatesInPeriod(selectedPeriod);
+
+    bool selectedPeriodIsBroken = disabledDates.isNotEmpty;
+    return selectedPeriodIsBroken;
+  }
+
+  List<DateTime> _disabledDatesInPeriod(DatePeriod period) {
+    List<DateTime> result = <DateTime>[];
+
+    var date = period.start;
+
+    while (!date.isAfter(period.end)) {
+      if (isDisabled(date)) result.add(date);
+
+      date = date.add(Duration(days: 1));
+    }
+
+    return result;
+  }
+
+  bool _isDaySelected(DateTime date) {
+    DateTime startOfTheStartDay =
+        DatePickerUtils.startOfTheDay(selectedPeriod.start);
+    DateTime endOfTheLastDay = DatePickerUtils.endOfTheDay(selectedPeriod.end);
+    return !(date.isBefore(startOfTheStartDay) ||
+        date.isAfter(endOfTheLastDay));
+  }
+}

flutter_date_pickers-master/lib/src/icon_btn.dart

@@ -0,0 +1,54 @@
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+
+/// Icon button widget built different
+/// depends on [MaterialApp] or [CupertinoApp] ancestor.
+class IconBtn extends StatelessWidget {
+  /// Widget to use inside button.
+  ///
+  /// Typically [Icon] widget.
+  final Widget icon;
+
+  /// Function called when user tap on the button.
+  ///
+  /// Can be null. In this case button will be disabled.
+  final VoidCallback? onTap;
+
+  /// Tooltip for button.
+  ///
+  /// Applied only for material style buttons.
+  /// It means only if widget has [MaterialApp] ancestor.
+  final String? tooltip;
+
+  /// Creates button with [icon] different
+  /// depends on [MaterialApp] or [CupertinoApp] ancestor.
+  const IconBtn({
+    Key? key,
+    required this.icon,
+    this.onTap,
+    this.tooltip
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    bool isMaterial =  Material.of(context) != null;
+
+    return isMaterial
+      ? _materialBtn()
+      : _cupertinoBtn();
+  }
+
+  Widget _cupertinoBtn() =>
+      CupertinoButton(
+        padding: const EdgeInsets.all(0.0),
+        child: icon,
+        onPressed: onTap,
+      );
+
+  Widget _materialBtn() =>
+     IconButton(
+       icon: icon,
+       tooltip: tooltip ?? "",
+       onPressed: onTap,
+    );
+}

flutter_date_pickers-master/lib/src/layout_settings.dart

@@ -0,0 +1,115 @@
+import 'dart:math' as math;
+
+import 'package:flutter/rendering.dart';
+import 'package:flutter/widgets.dart';
+import 'day_picker.dart';
+import 'month_picker.dart';
+import 'range_picker.dart';
+import 'week_picker.dart';
+
+// layout defaults
+const Duration _kPageScrollDuration = Duration(milliseconds: 200);
+const double _kDayPickerRowHeight = 42.0;
+const int _kMaxDayPickerRowCount = 6; // A 31 day month that starts on Saturday.
+const double _kMonthPickerPortraitWidth = 330.0;
+const EdgeInsetsGeometry _kContentPadding =
+    EdgeInsets.symmetric(horizontal: 8.0);
+
+/// Settings for the layout of the [DayPicker], [WeekPicker], [RangePicker]
+/// and [MonthPicker].
+class DatePickerLayoutSettings {
+  /// Duration for scroll to previous or next page.
+  final Duration pagesScrollDuration;
+
+  /// Determines the scroll physics of a date picker widget.
+  ///
+  /// Can be null. In this case default physics for [ScrollView] will be used.
+  final ScrollPhysics? scrollPhysics;
+
+  /// Height of the one row in picker including headers.
+  ///
+  /// Default is [_kDayPickerRowHeight].
+  final double dayPickerRowHeight;
+
+  /// Width of the day based pickers.
+  final double monthPickerPortraitWidth;
+
+  ///
+  final int maxDayPickerRowCount;
+
+  /// Padding for the entire picker.
+  final EdgeInsetsGeometry contentPadding;
+
+  /// If the first dates from the next month should be shown
+  /// to complete last week of the selected month.
+  ///
+  /// false by default.
+  final bool showNextMonthStart;
+
+  /// If the last dates from the previous month should be shown
+  /// to complete first week of the selected month.
+  ///
+  /// false by default.
+  final bool showPrevMonthEnd;
+    
+  /// Hide Month navigation row
+  /// false by default.
+  final bool hideMonthNavigationRow;
+
+  /// Grid delegate for the picker according to [dayPickerRowHeight] and
+  /// [maxDayPickerRowCount].
+  SliverGridDelegate get dayPickerGridDelegate =>
+      _DayPickerGridDelegate(dayPickerRowHeight, maxDayPickerRowCount);
+
+  /// Maximum height of the day based picker according to [dayPickerRowHeight]
+  /// and [maxDayPickerRowCount].
+  ///
+  /// Two extra rows:
+  /// one for the day-of-week header and one for the month header.
+  double get maxDayPickerHeight =>
+      dayPickerRowHeight * (maxDayPickerRowCount + 2);
+
+  /// Creates layout settings for the date picker.
+  ///
+  /// Usually used in [DayPicker], [WeekPicker], [RangePicker]
+  /// and [MonthPicker].
+  const DatePickerLayoutSettings({
+    this.pagesScrollDuration = _kPageScrollDuration,
+    this.dayPickerRowHeight = _kDayPickerRowHeight,
+    this.monthPickerPortraitWidth = _kMonthPickerPortraitWidth,
+    this.maxDayPickerRowCount = _kMaxDayPickerRowCount,
+    this.contentPadding = _kContentPadding,
+    this.showNextMonthStart = false,
+    this.showPrevMonthEnd = false,
+    this.hideMonthNavigationRow = false,
+    this.scrollPhysics
+  });
+}
+
+
+class _DayPickerGridDelegate extends SliverGridDelegate {
+  final double _dayPickerRowHeight;
+  final int _maxDayPickerRowCount;
+
+  const _DayPickerGridDelegate(
+      this._dayPickerRowHeight, this._maxDayPickerRowCount);
+
+  @override
+  SliverGridLayout getLayout(SliverConstraints constraints) {
+    const int columnCount = DateTime.daysPerWeek;
+    final double tileWidth = constraints.crossAxisExtent / columnCount;
+    final double tileHeight = math.min(_dayPickerRowHeight,
+        constraints.viewportMainAxisExtent / (_maxDayPickerRowCount + 1));
+    return SliverGridRegularTileLayout(
+      crossAxisCount: columnCount,
+      mainAxisStride: tileHeight,
+      crossAxisStride: tileWidth,
+      childMainAxisExtent: tileHeight,
+      childCrossAxisExtent: tileWidth,
+      reverseCrossAxis: axisDirectionIsReversed(constraints.crossAxisDirection),
+    );
+  }
+
+  @override
+  bool shouldRelayout(SliverGridDelegate oldDelegate) => false;
+}

flutter_date_pickers-master/lib/src/month_navigation_row.dart

@@ -0,0 +1,99 @@
+import 'package:flutter/material.dart';
+import 'day_picker.dart' as day_picker;
+import 'icon_btn.dart';
+import 'range_picker.dart';
+import 'semantic_sorting.dart';
+import 'week_picker.dart';
+
+/// Month navigation widget for day based date pickers like
+/// [day_picker.DayPicker],
+/// [WeekPicker],
+/// [RangePicker].
+///
+/// It is row with [title] of showing month in the center and icons to selects
+/// previous and next month around it.
+class MonthNavigationRow extends StatelessWidget {
+  /// Key for previous page icon.
+  ///
+  /// Can be useful in integration tests to find icon.
+  final Key? previousPageIconKey;
+
+  /// Key for next page icon.
+  ///
+  /// Can be useful in integration tests to find icon.
+  final Key? nextPageIconKey;
+
+  /// Function called when [nextIcon] is tapped.
+  final VoidCallback? onNextMonthTapped;
+
+  /// Function called when [prevIcon] is tapped.
+  final VoidCallback? onPreviousMonthTapped;
+
+  /// Tooltip for the [nextIcon].
+  final String? nextMonthTooltip;
+
+  /// Tooltip for the [prevIcon].
+  final String? previousMonthTooltip;
+
+  /// Widget to use at the end of this row (after title).
+  final Widget nextIcon;
+
+  /// Widget to use at the beginning of this row (before title).
+  final Widget prevIcon;
+
+  /// Usually [Text] widget.
+  final Widget? title;
+
+  /// Creates month navigation row.
+  const MonthNavigationRow({
+    Key? key,
+    this.previousPageIconKey,
+    this.nextPageIconKey,
+    this.onNextMonthTapped,
+    this.onPreviousMonthTapped,
+    this.nextMonthTooltip,
+    this.previousMonthTooltip,
+    this.title,
+    required this.nextIcon,
+    required this.prevIcon
+  }) : super(key: key);
+
+  @override
+  // ignore: prefer_expression_function_bodies
+  Widget build(BuildContext context) {
+    return Row(
+      mainAxisAlignment: MainAxisAlignment.spaceBetween,
+      crossAxisAlignment: CrossAxisAlignment.center,
+      children: <Widget>[
+        Semantics(
+          sortKey: MonthPickerSortKey.previousMonth,
+          child: IconBtn(
+            key: previousPageIconKey,
+            icon: prevIcon,
+            tooltip: previousMonthTooltip,
+            onTap: onPreviousMonthTapped,
+          ),
+        ),
+        Expanded(
+          child: Container(
+            alignment: Alignment.center,
+            child: Center(
+              child: ExcludeSemantics(
+                child: title,
+              ),
+            ),
+          ),
+        ),
+        Semantics(
+          sortKey: MonthPickerSortKey.nextMonth,
+          child: IconBtn(
+            key: nextPageIconKey,
+            icon: nextIcon,
+            tooltip: nextMonthTooltip,
+            onTap: onNextMonthTapped,
+          ),
+        ),
+      ],
+    );
+  }
+}

flutter_date_pickers-master/lib/src/month_picker.dart

@@ -0,0 +1,440 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:flutter/rendering.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
+import 'package:intl/intl.dart' as intl;
+
+import 'date_picker_keys.dart';
+import 'date_picker_styles.dart';
+import 'layout_settings.dart';
+import 'semantic_sorting.dart';
+import 'utils.dart';
+
+const Locale _defaultLocale = Locale('en', 'US');
+
+/// Month picker widget.
+class MonthPicker extends StatefulWidget {
+  /// Month picker widget.
+  MonthPicker(
+      {Key? key,
+      required this.selectedDate,
+      required this.onChanged,
+      required this.firstDate,
+      required this.lastDate,
+      this.datePickerLayoutSettings = const DatePickerLayoutSettings(),
+      this.datePickerKeys,
+      required this.datePickerStyles})
+      : assert(!firstDate.isAfter(lastDate)),
+        assert(!selectedDate.isBefore(firstDate)),
+        assert(!selectedDate.isAfter(lastDate)),
+        super(key: key);
+
+  /// The currently selected date.
+  ///
+  /// This date is highlighted in the picker.
+  final DateTime selectedDate;
+
+  /// Called when the user picks a month.
+  final ValueChanged<DateTime> onChanged;
+
+  /// The earliest date the user is permitted to pick.
+  final DateTime firstDate;
+
+  /// The latest date the user is permitted to pick.
+  final DateTime lastDate;
+
+  /// Layout settings what can be customized by user
+  final DatePickerLayoutSettings datePickerLayoutSettings;
+
+  /// Some keys useful for integration tests
+  final DatePickerKeys? datePickerKeys;
+
+  /// Styles what can be customized by user
+  final DatePickerStyles datePickerStyles;
+
+  @override
+  State<StatefulWidget> createState() => _MonthPickerState();
+}
+
+class _MonthPickerState extends State<MonthPicker> {
+  PageController _monthPickerController = PageController();
+
+  Locale locale = _defaultLocale;
+  MaterialLocalizations localizations = _defaultLocalizations;
+
+  TextDirection textDirection = TextDirection.ltr;
+
+  DateTime _todayDate = DateTime.now();
+  DateTime _previousYearDate = DateTime(DateTime.now().year - 1);
+  DateTime _nextYearDate = DateTime(DateTime.now().year + 1);
+
+  DateTime _currentDisplayedYearDate = DateTime.now();
+
+  Timer? _timer;
+
+  /// True if the earliest allowable year is displayed.
+  bool get _isDisplayingFirstYear =>
+      !_currentDisplayedYearDate.isAfter(DateTime(widget.firstDate.year));
+
+  /// True if the latest allowable year is displayed.
+  bool get _isDisplayingLastYear =>
+      !_currentDisplayedYearDate.isBefore(DateTime(widget.lastDate.year));
+
+  @override
+  void initState() {
+    super.initState();
+    // Initially display the pre-selected date.
+    final int yearPage =
+        DatePickerUtils.yearDelta(widget.firstDate, widget.selectedDate);
+
+    _monthPickerController.dispose();
+    _monthPickerController = PageController(initialPage: yearPage);
+    _handleYearPageChanged(yearPage);
+    _updateCurrentDate();
+  }
+
+  @override
+  void didUpdateWidget(MonthPicker oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (widget.selectedDate != oldWidget.selectedDate) {
+      final int yearPage =
+          DatePickerUtils.yearDelta(widget.firstDate, widget.selectedDate);
+      _monthPickerController = PageController(initialPage: yearPage);
+      _handleYearPageChanged(yearPage);
+    }
+  }
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+
+    try {
+      locale = Localizations.localeOf(context);
+
+      MaterialLocalizations? curLocalizations =
+          Localizations.of<MaterialLocalizations>(
+              context, MaterialLocalizations);
+      if (curLocalizations != null && localizations != curLocalizations) {
+        localizations = curLocalizations;
+      }
+
+      textDirection = Directionality.of(context);
+
+      // No MaterialLocalizations or Directionality or Locale was found
+      // and ".of" method throws error
+      // trying to cast null to MaterialLocalizations.
+    } on TypeError catch (_) {}
+  }
+
+  void _updateCurrentDate() {
+    _todayDate = DateTime.now();
+    final DateTime tomorrow =
+        DateTime(_todayDate.year, _todayDate.month, _todayDate.day + 1);
+    Duration timeUntilTomorrow = tomorrow.difference(_todayDate);
+    timeUntilTomorrow +=
+        const Duration(seconds: 1); // so we don't miss it by rounding
+    _timer?.cancel();
+    _timer = Timer(timeUntilTomorrow, () {
+      setState(_updateCurrentDate);
+    });
+  }
+
+  /// Add years to a year truncated date.
+  DateTime _addYearsToYearDate(DateTime yearDate, int yearsToAdd) =>
+      DateTime(yearDate.year + yearsToAdd);
+
+  Widget _buildItems(BuildContext context, int index) {
+    final DateTime year = _addYearsToYearDate(widget.firstDate, index);
+
+    final ThemeData theme = Theme.of(context);
+    DatePickerStyles styles = widget.datePickerStyles;
+    styles = styles.fulfillWithTheme(theme);
+
+    return _MonthPicker(
+      key: ValueKey<DateTime>(year),
+      selectedDate: widget.selectedDate,
+      currentDate: _todayDate,
+      onChanged: widget.onChanged,
+      firstDate: widget.firstDate,
+      lastDate: widget.lastDate,
+      datePickerLayoutSettings: widget.datePickerLayoutSettings,
+      displayedYear: year,
+      selectedPeriodKey: widget.datePickerKeys?.selectedPeriodKeys,
+      datePickerStyles: styles,
+      locale: locale,
+      localizations: localizations,
+    );
+  }
+
+  void _handleNextYear() {
+    if (!_isDisplayingLastYear) {
+      String yearStr = localizations.formatYear(_nextYearDate);
+      SemanticsService.announce(yearStr, textDirection);
+      _monthPickerController.nextPage(
+          duration: widget.datePickerLayoutSettings.pagesScrollDuration,
+          curve: Curves.ease);
+    }
+  }
+
+  void _handlePreviousYear() {
+    if (!_isDisplayingFirstYear) {
+      String yearStr = localizations.formatYear(_previousYearDate);
+      SemanticsService.announce(yearStr, textDirection);
+      _monthPickerController.previousPage(
+          duration: widget.datePickerLayoutSettings.pagesScrollDuration,
+          curve: Curves.ease);
+    }
+  }
+
+  void _handleYearPageChanged(int yearPage) {
+    setState(() {
+      _previousYearDate = _addYearsToYearDate(widget.firstDate, yearPage - 1);
+      _currentDisplayedYearDate =
+          _addYearsToYearDate(widget.firstDate, yearPage);
+      _nextYearDate = _addYearsToYearDate(widget.firstDate, yearPage + 1);
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    int yearsCount =
+        DatePickerUtils.yearDelta(widget.firstDate, widget.lastDate) + 1;
+
+    return SizedBox(
+      width: widget.datePickerLayoutSettings.monthPickerPortraitWidth,
+      height: widget.datePickerLayoutSettings.maxDayPickerHeight,
+      child: Stack(
+        children: <Widget>[
+          Semantics(
+            sortKey: YearPickerSortKey.calendar,
+            child: PageView.builder(
+              key: ValueKey<DateTime>(widget.selectedDate),
+              controller: _monthPickerController,
+              scrollDirection: Axis.horizontal,
+              itemCount: yearsCount,
+              itemBuilder: _buildItems,
+              onPageChanged: _handleYearPageChanged,
+            ),
+          ),
+          PositionedDirectional(
+            top: 0.0,
+            start: 8.0,
+            child: Semantics(
+              sortKey: YearPickerSortKey.previousYear,
+              child: IconButton(
+                key: widget.datePickerKeys?.previousPageIconKey,
+                icon: widget.datePickerStyles.prevIcon,
+                tooltip: _isDisplayingFirstYear
+                    ? null
+                    : '${localizations.formatYear(_previousYearDate)}',
+                onPressed: _isDisplayingFirstYear ? null : _handlePreviousYear,
+              ),
+            ),
+          ),
+          PositionedDirectional(
+            top: 0.0,
+            end: 8.0,
+            child: Semantics(
+              sortKey: YearPickerSortKey.nextYear,
+              child: IconButton(
+                key: widget.datePickerKeys?.nextPageIconKey,
+                icon: widget.datePickerStyles.nextIcon,
+                tooltip: _isDisplayingLastYear
+                    ? null
+                    : '${localizations.formatYear(_nextYearDate)}',
+                onPressed: _isDisplayingLastYear ? null : _handleNextYear,
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  static MaterialLocalizations get _defaultLocalizations =>
+      MaterialLocalizationEn(
+        twoDigitZeroPaddedFormat:
+            intl.NumberFormat('00', _defaultLocale.toString()),
+        fullYearFormat: intl.DateFormat.y(_defaultLocale.toString()),
+        longDateFormat: intl.DateFormat.yMMMMEEEEd(_defaultLocale.toString()),
+        shortMonthDayFormat: intl.DateFormat.MMMd(_defaultLocale.toString()),
+        decimalFormat:
+            intl.NumberFormat.decimalPattern(_defaultLocale.toString()),
+        shortDateFormat: intl.DateFormat.yMMMd(_defaultLocale.toString()),
+        mediumDateFormat: intl.DateFormat.MMMEd(_defaultLocale.toString()),
+        compactDateFormat: intl.DateFormat.yMd(_defaultLocale.toString()),
+        yearMonthFormat: intl.DateFormat.yMMMM(_defaultLocale.toString()),
+      );
+}
+
+class _MonthPicker extends StatelessWidget {
+  /// The month whose days are displayed by this picker.
+  final DateTime displayedYear;
+
+  /// The earliest date the user is permitted to pick.
+  final DateTime firstDate;
+
+  /// The latest date the user is permitted to pick.
+  final DateTime lastDate;
+
+  /// The currently selected date.
+  ///
+  /// This date is highlighted in the picker.
+  final DateTime selectedDate;
+
+  /// The current date at the time the picker is displayed.
+  final DateTime currentDate;
+
+  /// Layout settings what can be customized by user
+  final DatePickerLayoutSettings datePickerLayoutSettings;
+
+  /// Called when the user picks a day.
+  final ValueChanged<DateTime> onChanged;
+
+  ///  Key fo selected month (useful for integration tests)
+  final Key? selectedPeriodKey;
+
+  /// Styles what can be customized by user
+  final DatePickerStyles datePickerStyles;
+
+  final MaterialLocalizations localizations;
+
+  final Locale locale;
+
+  _MonthPicker(
+      {required this.displayedYear,
+      required this.firstDate,
+      required this.lastDate,
+      required this.selectedDate,
+      required this.currentDate,
+      required this.onChanged,
+      required this.datePickerLayoutSettings,
+      required this.datePickerStyles,
+      required this.localizations,
+      required this.locale,
+      this.selectedPeriodKey,
+      Key? key})
+      : assert(!firstDate.isAfter(lastDate)),
+        assert(selectedDate.isAfter(firstDate) ||
+            selectedDate.isAtSameMomentAs(firstDate)),
+        super(key: key);
+
+  // We only need to know if month of passed day
+  // before the month of the firstDate or after the month of the lastDate.
+  //
+  // Don't need to compare day and time.
+  bool _isDisabled(DateTime month) {
+    DateTime beginningOfTheFirstDateMonth =
+        DateTime(firstDate.year, firstDate.month);
+    DateTime endOfTheLastDateMonth = DateTime(lastDate.year, lastDate.month + 1)
+        .subtract(Duration(microseconds: 1));
+
+    return month.isAfter(endOfTheLastDateMonth) ||
+        month.isBefore(beginningOfTheFirstDateMonth);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final ThemeData themeData = Theme.of(context);
+    final int monthsInYear = 12;
+    final int year = displayedYear.year;
+    final int day = 1;
+
+    final List<Widget> labels = <Widget>[];
+
+    for (int i = 0; i < monthsInYear; i += 1) {
+      final int month = i + 1;
+      final DateTime monthToBuild = DateTime(year, month, day);
+
+      final bool disabled = _isDisabled(monthToBuild);
+      final bool isSelectedMonth =
+          selectedDate.year == year && selectedDate.month == month;
+
+      BoxDecoration? decoration;
+      TextStyle? itemStyle = themeData.textTheme.bodyText2;
+
+      if (isSelectedMonth) {
+        itemStyle = datePickerStyles.selectedDateStyle;
+        decoration = datePickerStyles.selectedSingleDateDecoration;
+      } else if (disabled) {
+        itemStyle = datePickerStyles.disabledDateStyle;
+      } else if (currentDate.year == year && currentDate.month == month) {
+        // The current month gets a different text color.
+        itemStyle = datePickerStyles.currentDateStyle;
+      } else {
+        itemStyle = datePickerStyles.defaultDateTextStyle;
+      }
+
+      String monthStr = _getMonthStr(monthToBuild);
+
+      Widget monthWidget = Container(
+        decoration: decoration,
+        child: Center(
+          child: Semantics(
+            // We want the day of month to be spoken first irrespective of the
+            // locale-specific preferences or TextDirection. This is because
+            // an accessibility user is more likely to be interested in the
+            // day of month before the rest of the date, as they are looking
+            // for the day of month. To do that we prepend day of month to the
+            // formatted full date.
+            label: '${localizations.formatDecimal(month)}, '
+                '${localizations.formatFullDate(monthToBuild)}',
+            selected: isSelectedMonth,
+            child: ExcludeSemantics(
+              child: Text(monthStr, style: itemStyle),
+            ),
+          ),
+        ),
+      );
+
+      if (!disabled) {
+        monthWidget = GestureDetector(
+          behavior: HitTestBehavior.opaque,
+          onTap: () {
+            DatePickerUtils.sameMonth(firstDate, monthToBuild)
+                ? onChanged(firstDate)
+                : onChanged(monthToBuild);
+          },
+          child: monthWidget,
+        );
+      }
+      labels.add(monthWidget);
+    }
+
+    return Padding(
+      padding: const EdgeInsets.symmetric(horizontal: 8.0),
+      child: Column(
+        children: <Widget>[
+          Container(
+            height: datePickerLayoutSettings.dayPickerRowHeight,
+            child: Center(
+              child: ExcludeSemantics(
+                child: Text(
+                  localizations.formatYear(displayedYear),
+                  key: selectedPeriodKey,
+                  style: datePickerStyles.displayedPeriodTitle,
+                ),
+              ),
+            ),
+          ),
+          Flexible(
+            child: GridView.count(
+              physics: datePickerLayoutSettings.scrollPhysics,
+              crossAxisCount: 4,
+              children: labels,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  // Returns only month made with intl.DateFormat.MMM() for current [locale].
+  // We can'r use [localizations] here because MaterialLocalizations doesn't
+  // provide short month string.
+  String _getMonthStr(DateTime date) {
+    String month = intl.DateFormat.MMM(locale.toString()).format(date);
+    return month;
+  }
+}

flutter_date_pickers-master/lib/src/range_picker.dart

@@ -0,0 +1,109 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/rendering.dart';
+
+import 'date_period.dart';
+import 'date_picker_keys.dart';
+import 'date_picker_styles.dart';
+import 'day_based_changable_picker.dart';
+import 'day_picker_selection.dart';
+import 'day_type.dart';
+import 'event_decoration.dart';
+import 'i_selectable_picker.dart';
+import 'layout_settings.dart';
+import 'typedefs.dart';
+
+/// Date picker for range selection.
+class RangePicker extends StatelessWidget {
+  /// Creates a range picker.
+  RangePicker(
+      {Key? key,
+      required this.selectedPeriod,
+      required this.onChanged,
+      required this.firstDate,
+      required this.lastDate,
+      this.initiallyShowDate,
+      this.datePickerLayoutSettings = const DatePickerLayoutSettings(),
+      this.datePickerStyles,
+      this.datePickerKeys,
+      this.selectableDayPredicate,
+      this.onSelectionError,
+      this.eventDecorationBuilder,
+      this.onMonthChanged})
+      : assert(!firstDate.isAfter(lastDate)),
+        assert(!lastDate.isBefore(firstDate)),
+        assert(!selectedPeriod.start.isBefore(firstDate)),
+        assert(!selectedPeriod.end.isAfter(lastDate)),
+        assert(initiallyShowDate == null
+            || !initiallyShowDate.isAfter(lastDate)),
+        assert(initiallyShowDate == null
+            || !initiallyShowDate.isBefore(firstDate)),
+        super(key: key);
+
+  /// The currently selected period.
+  ///
+  /// This date is highlighted in the picker.
+  final DatePeriod selectedPeriod;
+
+  /// Called when the user picks a week.
+  final ValueChanged<DatePeriod> onChanged;
+
+  /// Called when the error was thrown after user selection.
+  /// (e.g. when user selected a range with one or more days
+  /// that can't be selected)
+  final OnSelectionError? onSelectionError;
+
+  /// The earliest date the user is permitted to pick.
+  final DateTime firstDate;
+
+  /// The latest date the user is permitted to pick.
+  final DateTime lastDate;
+
+  /// Date for defining what month should be shown initially.
+  ///
+  /// In case of null start of the [selectedPeriod] will be shown.
+  final DateTime? initiallyShowDate;
+
+  /// Layout settings what can be customized by user
+  final DatePickerLayoutSettings datePickerLayoutSettings;
+
+  /// Some keys useful for integration tests
+  final DatePickerKeys? datePickerKeys;
+
+  /// Styles what can be customized by user
+  final DatePickerRangeStyles? datePickerStyles;
+
+  /// Function returns if day can be selected or not.
+  final SelectableDayPredicate? selectableDayPredicate;
+
+  /// Builder to get event decoration for each date.
+  ///
+  /// All event styles are overridden by selected styles
+  /// except days with dayType is [DayType.notSelected].
+  final EventDecorationBuilder? eventDecorationBuilder;
+
+  /// Called when the user changes the month.
+  /// New DateTime object represents first day of new month and 00:00 time.
+  final ValueChanged<DateTime>? onMonthChanged;
+
+  @override
+  Widget build(BuildContext context) {
+    ISelectablePicker<DatePeriod> rangeSelectablePicker = RangeSelectable(
+        selectedPeriod, firstDate, lastDate,
+        selectableDayPredicate: selectableDayPredicate);
+
+    return DayBasedChangeablePicker<DatePeriod>(
+      selectablePicker: rangeSelectablePicker,
+      selection: DayPickerRangeSelection(selectedPeriod),
+      firstDate: firstDate,
+      lastDate: lastDate,
+      initiallyShownDate: initiallyShowDate,
+      onChanged: onChanged,
+      onSelectionError: onSelectionError,
+      datePickerLayoutSettings: datePickerLayoutSettings,
+      datePickerStyles: datePickerStyles ?? DatePickerRangeStyles(),
+      datePickerKeys: datePickerKeys,
+      eventDecorationBuilder: eventDecorationBuilder,
+      onMonthChanged: onMonthChanged,
+    );
+  }
+}

flutter_date_pickers-master/lib/src/semantic_sorting.dart

@@ -0,0 +1,33 @@
+import 'package:flutter/semantics.dart';
+
+/// Defines semantic traversal order of the top-level widgets
+/// inside the day or week picker.
+class MonthPickerSortKey extends OrdinalSortKey {
+  /// Previous month key.
+  static const MonthPickerSortKey previousMonth = MonthPickerSortKey(1.0);
+
+  /// Next month key.
+  static const MonthPickerSortKey nextMonth = MonthPickerSortKey(2.0);
+
+  /// Calendar key.
+  static const MonthPickerSortKey calendar = MonthPickerSortKey(3.0);
+
+  ///
+  const MonthPickerSortKey(double order) : super(order);
+}
+
+/// Defines semantic traversal order of the top-level widgets
+/// inside the month picker.
+class YearPickerSortKey extends OrdinalSortKey {
+  /// Previous year key.
+  static const YearPickerSortKey previousYear = YearPickerSortKey(1.0);
+
+  /// Next year key.
+  static const YearPickerSortKey nextYear = YearPickerSortKey(2.0);
+
+  /// Calendar key.
+  static const YearPickerSortKey calendar = YearPickerSortKey(3.0);
+
+  ///
+  const YearPickerSortKey(double order) : super(order);
+}

flutter_date_pickers-master/lib/src/typedefs.dart

@@ -0,0 +1,11 @@
+import 'range_picker.dart';
+import 'unselectable_period_error.dart';
+import 'week_picker.dart';
+
+
+/// Signature for function that can be used to handle incorrect selections.
+///
+/// See also:
+/// * [WeekPicker.onSelectionError]
+/// * [RangePicker.onSelectionError]
+typedef OnSelectionError = void Function(UnselectablePeriodException e);

flutter_date_pickers-master/lib/src/unselectable_period_error.dart

@@ -0,0 +1,30 @@
+import 'date_period.dart';
+import 'range_picker.dart';
+import 'week_picker.dart';
+
+
+/// Exception thrown when selected period contains custom disabled days.
+class UnselectablePeriodException implements Exception {
+  /// Dates inside selected period what can't be selected
+  /// according custom rules.
+  final List<DateTime> customDisabledDates;
+
+  /// Selected period wanted by the user.
+  final DatePeriod period;
+
+  /// Creates exception that stores dates that can not be selected.
+  ///
+  /// See also:
+  /// *[WeekPicker.onSelectionError]
+  /// *[RangePicker.onSelectionError]
+  UnselectablePeriodException(this.customDisabledDates, this.period);
+
+  @override
+  String toString() =>
+        "UnselectablePeriodException:"
+        " ${customDisabledDates.length} dates inside selected period "
+        "(${period.start} - ${period.end}) "
+        "can't be selected according custom rules (selectable pridicate). "
+        "Check 'customDisabledDates' property "
+        "to get entire list of such dates.";
+}

flutter_date_pickers-master/lib/src/utils.dart

@@ -0,0 +1,251 @@
+/// Bunch of useful functions for date pickers.
+class DatePickerUtils {
+  /// Returns if two objects have same year, month and day.
+  /// Time doesn't matter.
+  static bool sameDate(DateTime dateTimeOne, DateTime dateTimeTwo) =>
+     dateTimeOne.year == dateTimeTwo.year &&
+     dateTimeOne.month == dateTimeTwo.month &&
+     dateTimeOne.day == dateTimeTwo.day;
+
+  /// Returns if two objects have same year and month.
+  /// Day and time don't matter/
+  static bool sameMonth(DateTime dateTimeOne, DateTime dateTimeTwo) =>
+      dateTimeOne.year == dateTimeTwo.year
+      && dateTimeOne.month == dateTimeTwo.month;
+
+
+  // Do not use this directly - call getDaysInMonth instead.
+  static const List<int> _daysInMonth = <int>[
+    31,
+    -1,
+    31,
+    30,
+    31,
+    30,
+    31,
+    31,
+    30,
+    31,
+    30,
+    31
+  ];
+
+
+  /// Returns the number of days in a month, according to the proleptic
+  /// Gregorian calendar.
+  ///
+  /// This applies the leap year logic introduced by the Gregorian reforms of
+  /// 1582. It will not give valid results for dates prior to that time.
+  static int getDaysInMonth(int year, int month) {
+    if (month == DateTime.february) {
+      final bool isLeapYear =
+          (year % 4 == 0) && (year % 100 != 0) || (year % 400 == 0);
+      return isLeapYear ? 29 : 28;
+    }
+    return _daysInMonth[month - 1];
+  }
+
+
+  /// Returns number of months between [startDate] and [endDate]
+  static int monthDelta(DateTime startDate, DateTime endDate) =>
+     (endDate.year - startDate.year) * 12 +
+        endDate.month -
+        startDate.month;
+
+
+  /// Add months to a month truncated date.
+  static DateTime addMonthsToMonthDate(DateTime monthDate, int monthsToAdd) =>
+    // year is switched automatically if new month > 12
+    DateTime(monthDate.year, monthDate.month + monthsToAdd);
+
+
+  /// Returns number of years between [startDate] and [endDate]
+  static int yearDelta(DateTime startDate, DateTime endDate) =>
+     endDate.year - startDate.year;
+
+
+  /// Returns start of the first day of the week with given day.
+  ///
+  /// Start of the week calculated using firstDayIndex which is int from 0 to 6
+  /// where 0 points to Sunday and 6 points to Saturday.
+  /// (according to MaterialLocalization.firstDayIfWeekIndex)
+  static DateTime getFirstDayOfWeek(DateTime day, int firstDayIndex) {
+    // from 1 to 7 where 1 points to Monday and 7 points to Sunday
+    int weekday = day.weekday;
+
+    // to match weekdays where Sunday is 7 not 0
+    if (firstDayIndex == 0) firstDayIndex = 7;
+
+    int diff = weekday - firstDayIndex;
+    if (diff < 0) diff = 7 + diff;
+
+    DateTime firstDayOfWeek = day.subtract(Duration(days: diff));
+    firstDayOfWeek = startOfTheDay(firstDayOfWeek);
+    return firstDayOfWeek;
+  }
+
+  /// Returns end of the last day of the week with given day.
+  ///
+  /// Start of the week calculated using firstDayIndex which is int from 0 to 6
+  /// where 0 points to Sunday and 6 points to Saturday.
+  /// (according to MaterialLocalization.firstDayIfWeekIndex)
+  static DateTime getLastDayOfWeek(DateTime day, int firstDayIndex) {
+    // from 1 to 7 where 1 points to Monday and 7 points to Sunday
+    int weekday = day.weekday;
+
+    // to match weekdays where Sunday is 7 not 0
+    if (firstDayIndex == 0) firstDayIndex = 7;
+
+    int lastDayIndex = firstDayIndex - 1;
+    if (lastDayIndex == 0) lastDayIndex = 7;
+
+    int diff = lastDayIndex - weekday;
+    if (diff < 0) diff = 7 + diff;
+
+    DateTime lastDayOfWeek = day.add(Duration(days: diff));
+    lastDayOfWeek = endOfTheDay(lastDayOfWeek);
+    return lastDayOfWeek;
+  }
+
+  /// Returns end of the given day.
+  ///
+  /// End time is 1 millisecond before start of the next day.
+  static DateTime endOfTheDay(DateTime date) {
+    DateTime tomorrowStart = DateTime(date.year, date.month, date.day + 1);
+    DateTime result = tomorrowStart.subtract(const Duration(milliseconds: 1));
+
+    return result;
+  }
+
+
+  /// Returns start of the given day.
+  ///
+  /// Start time is 00:00:00.
+  static DateTime startOfTheDay(DateTime date) =>
+     DateTime(date.year, date.month, date.day);
+
+  /// Returns first shown date for the [curMonth].
+  ///
+  /// First shown date is not always 1st day of the [curMonth].
+  /// It can be day from previous month if [showEndOfPrevMonth] is true.
+  ///
+  /// If [showEndOfPrevMonth] is true empty day cells before 1st [curMonth]
+  /// are filled with days from the previous month.
+  static DateTime firstShownDate({
+      required DateTime curMonth,
+      required bool showEndOfPrevMonth,
+      required int firstDayOfWeekFromSunday}) {
+
+    DateTime result = DateTime(curMonth.year, curMonth.month, 1);
+
+    if (showEndOfPrevMonth) {
+      int firstDayOffset = computeFirstDayOffset(curMonth.year, curMonth.month,
+          firstDayOfWeekFromSunday);
+      if (firstDayOffset == 0) return result;
+
+
+      int prevMonth = curMonth.month - 1;
+      if (prevMonth < 1) prevMonth = 12;
+
+      int prevYear = prevMonth == 12
+        ? curMonth.year - 1
+        : curMonth.year;
+
+      int daysInPrevMonth = getDaysInMonth(prevYear, prevMonth);
+      int firstShownDay = daysInPrevMonth - firstDayOffset + 1;
+      result = DateTime(prevYear, prevMonth, firstShownDay);
+    }
+
+    return result;
+  }
+
+
+  /// Returns last shown date for the [curMonth].
+  ///
+  /// Last shown date is not always last day of the [curMonth].
+  /// It can be day from next month if [showStartNextMonth] is true.
+  ///
+  /// If [showStartNextMonth] is true empty day cells after last day
+  /// of [curMonth] are filled with days from the next month.
+  static DateTime lastShownDate({
+      required DateTime curMonth,
+      required bool showStartNextMonth,
+      required int firstDayOfWeekFromSunday}) {
+
+    int daysInCurMonth = getDaysInMonth(curMonth.year, curMonth.month);
+    DateTime result = DateTime(curMonth.year, curMonth.month, daysInCurMonth);
+
+    if (showStartNextMonth) {
+      int firstDayOffset = computeFirstDayOffset(curMonth.year, curMonth.month,
+          firstDayOfWeekFromSunday);
+
+      int totalDays = firstDayOffset + daysInCurMonth;
+      int trailingDaysCount = 7 - totalDays % 7;
+      bool fullWeekTrailing = trailingDaysCount == 7;
+      if (fullWeekTrailing) return result;
+
+      result = DateTime(curMonth.year, curMonth.month + 1, trailingDaysCount);
+    }
+
+    return result;
+  }
+
+  /// Computes the offset from the first day of week that the first day of the
+  /// [month] falls on.
+  ///
+  /// For example, September 1, 2017 falls on a Friday, which in the calendar
+  /// localized for United States English appears as:
+  ///
+  /// ```
+  /// S M T W T F S
+  /// _ _ _ _ _ 1 2
+  /// ```
+  ///
+  /// The offset for the first day of the months is the number of leading blanks
+  /// in the calendar, i.e. 5.
+  ///
+  /// The same date localized for the Russian calendar has a different offset,
+  /// because the first day of week is Monday rather than Sunday:
+  ///
+  /// ```
+  /// M T W T F S S
+  /// _ _ _ _ 1 2 3
+  /// ```
+  ///
+  /// So the offset is 4, rather than 5.
+  ///
+  /// This code consolidates the following:
+  ///
+  /// - [DateTime.weekday] provides a 1-based index into days of week, with 1
+  ///   falling on Monday.
+  /// - MaterialLocalizations.firstDayOfWeekIndex provides a 0-based index
+  ///   into the MaterialLocalizations.narrowWeekdays list.
+  /// - MaterialLocalizations.narrowWeekdays list provides localized names of
+  ///   days of week, always starting with Sunday and ending with Saturday.
+  static int computeFirstDayOffset(
+      int year, int month, int firstDayOfWeekFromSunday) {
+    // 0-based day of week, with 0 representing Monday.
+    final int weekdayFromMonday = DateTime(year, month).weekday - 1;
+    // firstDayOfWeekFromSunday recomputed to be Monday-based
+    final int firstDayOfWeekFromMonday = (firstDayOfWeekFromSunday - 1) % 7;
+    // Number of days between the first day of week appearing on the calendar,
+    // and the day corresponding to the 1-st of the month.
+    return (weekdayFromMonday - firstDayOfWeekFromMonday) % 7;
+  }
+
+  /// Returns earliest [DateTime] from the list.
+  ///
+  /// [dates] must not be null.
+  /// In case it is null, [ArgumentError] will be thrown.
+  static DateTime getEarliestFromList(List<DateTime> dates) {
+    ArgumentError.checkNotNull(dates, "dates");
+
+    return dates.fold(dates[0], getEarliest);
+  }
+
+  /// Returns earliest [DateTime] from two.
+  ///
+  /// If two [DateTime]s is the same moment first ([a]) will be return.
+  static DateTime getEarliest(DateTime a, DateTime b)
+    => a.isBefore(b) ? a : b;
+}

flutter_date_pickers-master/lib/src/week_picker.dart

@@ -0,0 +1,117 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/rendering.dart';
+
+import 'date_period.dart';
+import 'date_picker_keys.dart';
+import 'date_picker_styles.dart';
+import 'day_based_changable_picker.dart';
+import 'day_picker_selection.dart';
+import 'day_type.dart';
+import 'event_decoration.dart';
+import 'i_selectable_picker.dart';
+import 'layout_settings.dart';
+import 'typedefs.dart';
+
+/// Date picker for selection a week.
+class WeekPicker extends StatelessWidget {
+  /// Creates a month picker.
+  WeekPicker(
+      {Key? key,
+      required this.selectedDate,
+      required this.onChanged,
+      required this.firstDate,
+      required this.lastDate,
+      this.initiallyShowDate,
+      this.datePickerLayoutSettings = const DatePickerLayoutSettings(),
+      this.datePickerStyles,
+      this.datePickerKeys,
+      this.selectableDayPredicate,
+      this.onSelectionError,
+      this.eventDecorationBuilder,
+      this.onMonthChanged})
+      : assert(!firstDate.isAfter(lastDate)),
+        assert(!lastDate.isBefore(firstDate)),
+        assert(!selectedDate.isBefore(firstDate)),
+        assert(!selectedDate.isAfter(lastDate)),
+        assert(initiallyShowDate == null
+            || !initiallyShowDate.isAfter(lastDate)),
+        assert(initiallyShowDate == null
+            || !initiallyShowDate.isBefore(firstDate)),
+        super(key: key);
+
+  /// The currently selected date.
+  ///
+  /// This date is highlighted in the picker.
+  final DateTime selectedDate;
+
+  /// Called when the user picks a week.
+  final ValueChanged<DatePeriod> onChanged;
+
+  /// Called when the error was thrown after user selection.
+  /// (e.g. when user selected a week with one or more days
+  /// what can't be selected)
+  final OnSelectionError? onSelectionError;
+
+  /// The earliest date the user is permitted to pick.
+  final DateTime firstDate;
+
+  /// The latest date the user is permitted to pick.
+  final DateTime lastDate;
+
+  /// Date for defining what month should be shown initially.
+  ///
+  /// In case of null month with earliest date of the selected week
+  /// will be shown.
+  final DateTime? initiallyShowDate;
+
+  /// Layout settings what can be customized by user
+  final DatePickerLayoutSettings datePickerLayoutSettings;
+
+  /// Some keys useful for integration tests
+  final DatePickerKeys? datePickerKeys;
+
+  /// Styles what can be customized by user
+  final DatePickerRangeStyles? datePickerStyles;
+
+  /// Function returns if day can be selected or not.
+  final SelectableDayPredicate? selectableDayPredicate;
+
+  /// Builder to get event decoration for each date.
+  ///
+  /// All event styles are overriden by selected styles
+  /// except days with dayType is [DayType.notSelected].
+  final EventDecorationBuilder? eventDecorationBuilder;
+
+  /// Called when the user changes the month.
+  /// New DateTime object represents first day of new month and 00:00 time.
+  final ValueChanged<DateTime>? onMonthChanged;
+
+  @override
+  Widget build(BuildContext context) {
+    MaterialLocalizations localizations = MaterialLocalizations.of(context);
+
+    int firstDayOfWeekIndex = datePickerStyles?.firstDayOfeWeekIndex ??
+        localizations.firstDayOfWeekIndex;
+
+    ISelectablePicker<DatePeriod> weekSelectablePicker = WeekSelectable(
+        selectedDate, firstDayOfWeekIndex, firstDate, lastDate,
+        selectableDayPredicate: selectableDayPredicate);
+
+    return DayBasedChangeablePicker<DatePeriod>(
+      selectablePicker: weekSelectablePicker,
+      // todo: maybe create selection for week
+      // todo: and change logic here to work with it
+      selection: DayPickerSingleSelection(selectedDate),
+      firstDate: firstDate,
+      lastDate: lastDate,
+      initiallyShownDate: initiallyShowDate,
+      onChanged: onChanged,
+      onSelectionError: onSelectionError,
+      datePickerLayoutSettings: datePickerLayoutSettings,
+      datePickerStyles: datePickerStyles ?? DatePickerRangeStyles(),
+      datePickerKeys: datePickerKeys,
+      eventDecorationBuilder: eventDecorationBuilder,
+      onMonthChanged: onMonthChanged,
+    );
+  }
+}

flutter_date_pickers-master/pubspec.lock

@@ -0,0 +1,158 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  async:
+    dependency: transitive
+    description:
+      name: async
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.5.0"
+  boolean_selector:
+    dependency: transitive
+    description:
+      name: boolean_selector
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  characters:
+    dependency: transitive
+    description:
+      name: characters
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
+  charcode:
+    dependency: transitive
+    description:
+      name: charcode
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
+  clock:
+    dependency: transitive
+    description:
+      name: clock
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.15.0"
+  fake_async:
+    dependency: transitive
+    description:
+      name: fake_async
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
+  flutter:
+    dependency: "direct main"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  flutter_localizations:
+    dependency: "direct main"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  flutter_test:
+    dependency: "direct dev"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  intl:
+    dependency: "direct main"
+    description:
+      name: intl
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.17.0"
+  matcher:
+    dependency: transitive
+    description:
+      name: matcher
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.12.10"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.3.0"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.8.0"
+  sky_engine:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.99"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.8.0"
+  stack_trace:
+    dependency: transitive
+    description:
+      name: stack_trace
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.10.0"
+  stream_channel:
+    dependency: transitive
+    description:
+      name: stream_channel
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
+  test_api:
+    dependency: transitive
+    description:
+      name: test_api
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.2.19"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.3.0"
+  vector_math:
+    dependency: transitive
+    description:
+      name: vector_math
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+sdks:
+  dart: ">=2.12.0 <3.0.0"

flutter_date_pickers-master/pubspec.yaml

@@ -0,0 +1,20 @@
+name: flutter_date_pickers
+description: Flutter package for day, week, range and month date pickers.
+version: 0.2.4
+author: Maria Melnik <melnikmk@gmail.com>
+homepage: https://github.com/MariaMelnik/flutter_date_pickers
+issue_tracker: https://github.com/MariaMelnik/flutter_date_pickers/issues
+
+environment:
+  sdk: '>=2.12.0 <3.0.0'
+
+dependencies:
+  flutter:
+    sdk: flutter
+  intl: ">=0.17.0 <1.0.0"
+  flutter_localizations:
+    sdk: flutter
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter

flutter_date_pickers-master/test/date_time_utils.dart

@@ -0,0 +1,152 @@
+/// Bunch of useful functions for date pickers.
+class DateTimeUtils {
+  /// Returns if two objects have same year, month and day.
+  /// Time doesn't matter.
+  static bool sameDate(DateTime dateTimeOne, DateTime dateTimeTwo) =>
+      dateTimeOne.year == dateTimeTwo.year &&
+          dateTimeOne.month == dateTimeTwo.month &&
+          dateTimeOne.day == dateTimeTwo.day;
+
+  /// Returns if two objects have same year and month.
+  /// Day and time don't matter/
+  static bool sameMonth(DateTime dateTimeOne, DateTime dateTimeTwo) =>
+      dateTimeOne.year == dateTimeTwo.year
+          && dateTimeOne.month == dateTimeTwo.month;
+
+
+
+  /// Returns number of months between [startDate] and [endDate]
+  static int monthDelta(DateTime startDate, DateTime endDate) =>
+      (endDate.year - startDate.year) * 12 +
+          endDate.month -
+          startDate.month;
+
+
+  /// Add months to a month truncated date.
+  static DateTime addMonthsToMonthDate(DateTime monthDate, int monthsToAdd) =>
+      // year is switched automatically if new month > 12
+  DateTime(monthDate.year, monthDate.month + monthsToAdd);
+
+
+  /// Returns number of years between [startDate] and [endDate]
+  static int yearDelta(DateTime startDate, DateTime endDate) =>
+      endDate.year - startDate.year;
+
+
+  /// Returns start of the first day of the week with given day.
+  ///
+  /// Start of the week calculated using firstDayIndex which is int from 0 to 6
+  /// where 0 points to Sunday and 6 points to Saturday.
+  /// (according to MaterialLocalization.firstDayIfWeekIndex)
+  static DateTime getFirstDayOfWeek(DateTime day, int firstDayIndex) {
+    // from 1 to 7 where 1 points to Monday and 7 points to Sunday
+    int weekday = day.weekday;
+
+    // to match weekdays where Sunday is 7 not 0
+    if (firstDayIndex == 0) firstDayIndex = 7;
+
+    int diff = weekday - firstDayIndex;
+    if (diff < 0) diff = 7 + diff;
+
+    DateTime firstDayOfWeek = day.subtract(Duration(days: diff));
+    firstDayOfWeek = startOfTheDay(firstDayOfWeek);
+    return firstDayOfWeek;
+  }
+
+  /// Returns end of the last day of the week with given day.
+  ///
+  /// Start of the week calculated using firstDayIndex which is int from 0 to 6
+  /// where 0 points to Sunday and 6 points to Saturday.
+  /// (according to MaterialLocalization.firstDayIfWeekIndex)
+  static DateTime getLastDayOfWeek(DateTime day, int firstDayIndex) {
+    // from 1 to 7 where 1 points to Monday and 7 points to Sunday
+    int weekday = day.weekday;
+
+    // to match weekdays where Sunday is 7 not 0
+    if (firstDayIndex == 0) firstDayIndex = 7;
+
+    int lastDayIndex = firstDayIndex - 1;
+    if (lastDayIndex == 0) lastDayIndex = 7;
+
+    int diff = lastDayIndex - weekday;
+    if (diff < 0) diff = 7 + diff;
+
+    DateTime lastDayOfWeek = day.add(Duration(days: diff));
+    lastDayOfWeek = endOfTheDay(lastDayOfWeek);
+    return lastDayOfWeek;
+  }
+
+  /// Returns end of the given day.
+  ///
+  /// End time is 1 millisecond before start of the next day.
+  static DateTime endOfTheDay(DateTime date) =>
+      DateTime(date.year, date.month, date.day)
+          .add(const Duration(days: 1))
+          .subtract(const Duration(milliseconds: 1));
+
+  /// Returns start of the given day.
+  ///
+  /// Start time is 00:00:00.
+  static DateTime startOfTheDay(DateTime date) =>
+      DateTime(date.year, date.month, date.day);
+
+
+  /// Computes the offset from the first day of week that the first day of the
+  /// [month] falls on.
+  ///
+  /// For example, September 1, 2017 falls on a Friday, which in the calendar
+  /// localized for United States English appears as:
+  ///
+  /// ```
+  /// S M T W T F S
+  /// _ _ _ _ _ 1 2
+  /// ```
+  ///
+  /// The offset for the first day of the months is the number of leading blanks
+  /// in the calendar, i.e. 5.
+  ///
+  /// The same date localized for the Russian calendar has a different offset,
+  /// because the first day of week is Monday rather than Sunday:
+  ///
+  /// ```
+  /// M T W T F S S
+  /// _ _ _ _ 1 2 3
+  /// ```
+  ///
+  /// So the offset is 4, rather than 5.
+  ///
+  /// This code consolidates the following:
+  ///
+  /// - [DateTime.weekday] provides a 1-based index into days of week, with 1
+  ///   falling on Monday.
+  /// - MaterialLocalizations.firstDayOfWeekIndex provides a 0-based index
+  ///   into the MaterialLocalizations.narrowWeekdays list.
+  /// - MaterialLocalizations.narrowWeekdays list provides localized names of
+  ///   days of week, always starting with Sunday and ending with Saturday.
+  static int computeFirstDayOffset(
+      int year, int month, int firstDayOfWeekFromSunday) {
+    // 0-based day of week, with 0 representing Monday.
+    final int weekdayFromMonday = DateTime(year, month).weekday - 1;
+    // firstDayOfWeekFromSunday recomputed to be Monday-based
+    final int firstDayOfWeekFromMonday = (firstDayOfWeekFromSunday - 1) % 7;
+    // Number of days between the first day of week appearing on the calendar,
+    // and the day corresponding to the 1-st of the month.
+    return (weekdayFromMonday - firstDayOfWeekFromMonday) % 7;
+  }
+
+  /// Returns earliest [DateTime] from the list.
+  ///
+  /// [dates] must not be null.
+  /// In case it is null, [ArgumentError] will be thrown.
+  static DateTime getEarliestFromList(List<DateTime> dates) {
+    ArgumentError.checkNotNull(dates, "dates");
+
+    return dates.fold(dates[0], getEarliest);
+  }
+
+  /// Returns earliest [DateTime] from two.
+  ///
+  /// If two [DateTime]s is the same moment first ([a]) will be return.
+  static DateTime getEarliest(DateTime a, DateTime b)
+  => a.isBefore(b) ? a : b;
+}

flutter_date_pickers-master/test/day_multi_selectable_test.dart

@@ -0,0 +1,42 @@
+import 'package:flutter_date_pickers/src/day_type.dart';
+import 'package:flutter_date_pickers/src/i_selectable_picker.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import 'date_time_utils.dart';
+
+void main() {
+  group("DayMultiSelectable test.", () {
+    test("getDayType() returns correct type for different dates", () {
+      final now = DateTime.now();
+      final selectedDates = [
+        now.subtract(const Duration(days: 1)),
+        now,
+        now.add(const Duration(days: 1)),
+      ];
+
+      final firstDate = now.subtract(const Duration(days: 10));
+      final lastDate = now.add(const Duration(days: 10));
+      final disabledDate = now.subtract(const Duration(days: 5));
+
+      // ignore: prefer_function_declarations_over_variables
+      final selectablePredicate = (DateTime d)
+      => !DateTimeUtils.sameDate(d, disabledDate);
+
+      final selectableLogic = DayMultiSelectable(
+          selectedDates, firstDate, lastDate,
+          selectableDayPredicate: selectablePredicate);
+
+      final notSelectedEnabledDateType = selectableLogic.getDayType(firstDate);
+      expect(notSelectedEnabledDateType, DayType.notSelected);
+
+      final disabledDateType = selectableLogic.getDayType(disabledDate);
+      expect(disabledDateType, DayType.disabled);
+
+      for (DateTime d in selectedDates) {
+        final selectedDateType = selectableLogic.getDayType(d);
+        expect(selectedDateType, DayType.single,
+            reason: "Incorrect DayType for the date ${d.toString()}");
+      }
+    });
+  });
+}

flutter_date_pickers-master/test/day_selectable_test.dart

@@ -0,0 +1,31 @@
+import 'package:flutter_date_pickers/src/day_type.dart';
+import 'package:flutter_date_pickers/src/i_selectable_picker.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import 'date_time_utils.dart';
+
+void main() {
+  group("DaySelectable test.", () {
+    test("getDayType() returns correct type for different dates", () {
+      final selectedDate = DateTime.now();
+      final firstDate = selectedDate.subtract(const Duration(days: 10));
+      final lastDate = selectedDate.add(const Duration(days: 10));
+      final disabledDate = selectedDate.subtract(const Duration(days: 1));
+
+      // ignore: prefer_function_declarations_over_variables
+      final selectablePredicate = (DateTime d)
+        => !DateTimeUtils.sameDate(d, disabledDate);
+
+      final selectableLogic = DaySelectable(
+          selectedDate, firstDate, lastDate,
+          selectableDayPredicate: selectablePredicate);
+      final selectedDateType = selectableLogic.getDayType(selectedDate);
+      final notSelectedEnabledDateType = selectableLogic.getDayType(firstDate);
+      final disabledDateType = selectableLogic.getDayType(disabledDate);
+
+      expect(selectedDateType, DayType.single);
+      expect(notSelectedEnabledDateType, DayType.notSelected);
+      expect(disabledDateType, DayType.disabled);
+    });
+  });
+}

flutter_date_pickers-master/test/range_selectable_test.dart

@@ -0,0 +1,55 @@
+import 'package:flutter_date_pickers/flutter_date_pickers.dart';
+import 'package:flutter_date_pickers/src/day_type.dart';
+import 'package:flutter_date_pickers/src/i_selectable_picker.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import 'date_time_utils.dart';
+
+void main() {
+  group("RangeSelectable test.", () {
+    test("getDayType() returns correct type for different dates", () {
+      final now = DateTime.now();
+      final startPeriod = now.subtract(const Duration(days: 3));
+      final endPeriod = now.add(const Duration(days: 3));
+      final selectedPeriod = DatePeriod(startPeriod, endPeriod);
+
+      final firstDate = now.subtract(const Duration(days: 10));
+      final lastDate = now.add(const Duration(days: 10));
+      final disabledDate = now.subtract(const Duration(days: 5));
+
+      // ignore: prefer_function_declarations_over_variables
+      final selectablePredicate = (DateTime d)
+        => !DateTimeUtils.sameDate(d, disabledDate);
+
+      final selectableLogic = RangeSelectable(
+          selectedPeriod, firstDate, lastDate,
+          selectableDayPredicate: selectablePredicate);
+
+      final notSelectedEnabledDateType = selectableLogic.getDayType(firstDate);
+      expect(notSelectedEnabledDateType, DayType.notSelected);
+
+      final disabledDateType = selectableLogic.getDayType(disabledDate);
+      expect(disabledDateType, DayType.disabled);
+
+      final startPeriodDateType = selectableLogic.getDayType(startPeriod);
+      expect(startPeriodDateType, DayType.start);
+
+      final endPeriodDateType = selectableLogic.getDayType(endPeriod);
+      expect(endPeriodDateType, DayType.end);
+
+      final periodDays = endPeriod.difference(startPeriod).inDays;
+
+      // Count of the day period which is not start and not end.
+      final middleDaysCount = periodDays - 2;
+      final middleDates = List.generate(middleDaysCount,
+              (i) => startPeriod.add(Duration(days: i + 1)));
+
+      for (DateTime date in middleDates) {
+        final middlePeriodDateType = selectableLogic.getDayType(date);
+        expect(middlePeriodDateType, DayType.middle,
+            reason: "Incorrect DayType for the date ${date.toString()} "
+               "in period ${startPeriod.toString()} - ${endPeriod.toString()}");
+      }
+    });
+  });
+}

flutter_date_pickers-master/test/week_selectabl_test.dart

@@ -0,0 +1,56 @@
+import 'package:flutter_date_pickers/src/day_type.dart';
+import 'package:flutter_date_pickers/src/i_selectable_picker.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import 'date_time_utils.dart';
+
+void main() {
+  group("WeekSelectable test.", () {
+    test("getDayType() returns correct type for different dates", () {
+      final selectedDate = DateTime(2020, 10, 5); // Monday
+      final firstDayOfWeekIndex = 1; // Week starts from Monday
+
+      final firstDate = selectedDate.subtract(const Duration(days: 10));
+      final lastDate = selectedDate.add(const Duration(days: 10));
+      final disabledDate = selectedDate.subtract(const Duration(days: 5));
+
+      // ignore: prefer_function_declarations_over_variables
+      final selectablePredicate = (DateTime d)
+      => !DateTimeUtils.sameDate(d, disabledDate);
+
+      final selectableLogic = WeekSelectable(
+          selectedDate, firstDayOfWeekIndex, firstDate, lastDate,
+          selectableDayPredicate: selectablePredicate);
+
+      final notSelectedEnabledDateType = selectableLogic.getDayType(firstDate);
+      expect(notSelectedEnabledDateType, DayType.notSelected);
+
+      final disabledDateType = selectableLogic.getDayType(disabledDate);
+      expect(disabledDateType, DayType.disabled);
+
+      final weekStart = DateTimeUtils
+          .getFirstDayOfWeek(selectedDate, firstDayOfWeekIndex);
+
+      final weekEnd = DateTimeUtils
+          .getLastDayOfWeek(selectedDate, firstDayOfWeekIndex);
+
+      final startPeriodDateType = selectableLogic.getDayType(weekStart);
+      expect(startPeriodDateType, DayType.start);
+
+      final endPeriodDateType = selectableLogic.getDayType(weekEnd);
+      expect(endPeriodDateType, DayType.end);
+
+      // Count of the week days which is not start and not end (7 - 2).
+      final middleDaysCount = 5;
+      final middleDates = List.generate(middleDaysCount,
+              (i) => weekStart.add(Duration(days: i + 1)));
+
+      for (DateTime date in middleDates) {
+        final middlePeriodDateType = selectableLogic.getDayType(date);
+        expect(middlePeriodDateType, DayType.middle,
+            reason: "Incorrect DayType for the date ${date.toString()} "
+                "in week ${weekStart.toString()} - ${weekEnd.toString()}");
+      }
+    });
+  });
+}

flutter_date_pickers-master/tool/flutter_analyze.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+OUTPUT="$(flutter analyze)"
+echo "$OUTPUT"
+echo
+if grep -q "error •" echo "$OUTPUT"; then
+    echo "flutter analyze found errors"
+    exit 1
+else
+    echo "flutter analyze didn't find any errors"
+    exit 0
+fi