Remove catalog (#67470)

examples/catalog/README.md

-Samples Catalog
-=======
-
-A collection of sample apps that demonstrate how Flutter can be used.
-
-Each sample app is contained in a single `.dart` file located in the `lib`
-directory. To run each sample app, specify the corresponding file on the
-`flutter run` command line, for example:
-
-```
-flutter run lib/animated_list.dart
-flutter run lib/app_bar_bottom.dart
-flutter run lib/basic_app_bar.dart
-...
-```
-
-The apps are intended to be short and easily understood. Classes that represent
-the sample's focus are at the top of the file; data and support classes follow.
-
-Each sample app contains a comment (usually at the end) which provides some
-standard documentation that also appears in the web view of the catalog.
-See the "Generating..." section below.
-
-Generating the web view of the catalog
----------
-
-Markdown and a screenshot of each app are produced by `bin/sample_page.dart`
-and saved in the `.generated` directory. The markdown file contains
-the text taken from the Sample Catalog comment found in the app's source
-file, followed by the source code itself.
-
-This `sample_page.dart` command-line app must be run from the `examples/catalog`
-directory. It relies on templates also found in the bin directory, and it
-generates and executes `test_driver` apps to collect the screenshots:
-
-```
-cd examples/catalog
-dart bin/sample_page.dart
-```

examples/catalog/android/app/build.gradle

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-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 29
-
-    lintOptions {
-        disable 'InvalidPackage'
-    }
-
-    defaultConfig {
-        applicationId "io.flutter.examples.catalog"
-        minSdkVersion 16
-        targetSdkVersion 29
-        versionCode flutterVersionCode.toInteger()
-        versionName flutterVersionName
-    }
-
-    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 '../..'
-}

examples/catalog/android/app/src/main/AndroidManifest.xml

-<!-- Copyright 2014 The Flutter Authors. All rights reserved.
-Use of this source code is governed by a BSD-style license that can be
-found in the LICENSE file. -->
-
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.yourcompany.animated_list">
-
-    <!-- The INTERNET permission is required for development. Specifically,
-         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"/>
-
-    <application android:label="animated_list" android:icon="@mipmap/ic_launcher">
-        <activity android:name="io.flutter.embedding.android.FlutterActivity"
-                  android:theme="@android:style/Theme.Black.NoTitleBar"
-                  android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
-                  android:hardwareAccelerated="true"
-                  android:windowSoftInputMode="adjustResize">
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN"/>
-                <category android:name="android.intent.category.LAUNCHER"/>
-            </intent-filter>
-        </activity>
-        <!-- Don't delete the meta-data below.
-             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
-        <meta-data
-            android:name="flutterEmbedding"
-            android:value="2" />
-    </application>
-</manifest>

examples/catalog/android/build.gradle

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-buildscript {
-    repositories {
-        google()
-        jcenter()
-    }
-
-    dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.0'
-    }
-}
-
-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
-}

examples/catalog/android/gradle.properties

-org.gradle.jvmargs=-Xmx1536M
-android.useAndroidX=true
-android.enableJetifier=true
-android.enableR8=true

examples/catalog/android/gradle/wrapper/gradle-wrapper.properties

-#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-5.6.2-all.zip

examples/catalog/android/settings.gradle

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-include ':app'
-
-def localPropertiesFile = new File(rootProject.projectDir, "local.properties")
-def properties = new Properties()
-
-assert localPropertiesFile.exists()
-localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
-
-def flutterSdkPath = properties.getProperty("flutter.sdk")
-assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
-apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"

examples/catalog/bin/class_index.md.template

----
-layout: page
-title: "@(class) Sample Apps"
-permalink: /catalog/samples/@(link)/
----
-
-All of the sample apps listed here use the Flutter @(class) class in an interesting way. The <a href="/catalog/samples/">Sample App Catalog</a> page lists all of the sample apps.
-
-<div class="container-fluid">
-@(entries)
-</div>

examples/catalog/bin/entry.md.template

-  <div class="row" style="margin-bottom: 32px">
-    <a href="/catalog/samples/@(link)/">
-      <div class="col-md-3">
-        <img style="border:1px solid #000000" src="@(android screenshot)" alt="Android screenshot" class="img-responsive">
-      </div>
-   </a>
-    <div class="col-md-9">
-      <p>
-        @(summary)
-      </p>
-      <p>
-        This app features the following classes: @(classes).
-      </p>
-      <p>
-        <a href="/catalog/samples/@(link)/">Learn more</a>.
-      </p>
-    </div>
-  </div>

examples/catalog/bin/index.md.template

----
-layout: page
-title: "Sample App Catalog"
-permalink: /catalog/samples/
----
-
-This catalog lists applications that demonstrate how to implement common mobile design patterns with Flutter. Each sample demonstrates how a few Flutter widgets can be put together to implement a meaningful user interface. The samples are short - just one Dart file - but they're complete applications. They should be easy to try out and tweak with your favorite IDE/code editor.
-
-If there are other sample apps that you'd like to see we'd appreciate hearing from you on our [Gitter channel](https://gitter.im/flutter/flutter) or [mailing list](https://groups.google.com/d/forum/flutter-dev).
-
-<div class="container-fluid">
-@(entries)
-</div>

examples/catalog/bin/sample_page.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// This application generates markdown pages and screenshots for each
-// sample app. For more information see ../README.md.
-
-import 'dart:io';
-
-import 'package:path/path.dart';
-
-class SampleError extends Error {
-  SampleError(this.message);
-  final String message;
-  @override
-  String toString() => 'SampleError($message)';
-}
-
-// Sample apps are .dart files in the lib directory which contain a block
-// comment that begins with a '/* Sample Catalog' line, and ends with a line
-// that just contains '*/'. The following keywords may appear at the
-// beginning of lines within the comment. A keyword's value is all of
-// the following text up to the next keyword or the end of the comment,
-// sans leading and trailing whitespace.
-const String sampleCatalogKeywords = r'^Title:|^Summary:|^Description:|^Classes:|^Sample:|^See also:';
-
-Directory outputDirectory;
-Directory sampleDirectory;
-Directory testDirectory;
-Directory driverDirectory;
-
-void logMessage(String s) { print(s); }
-void logError(String s) { print(s); }
-
-File inputFile(String dir, String name) {
-  return File(dir + Platform.pathSeparator + name);
-}
-
-File outputFile(String name, [Directory directory]) {
-  return File((directory ?? outputDirectory).path + Platform.pathSeparator + name);
-}
-
-void initialize() {
-  outputDirectory = Directory('.generated');
-  sampleDirectory = Directory('lib');
-  testDirectory = Directory('test');
-  driverDirectory = Directory('test_driver');
-  outputDirectory.createSync();
-}
-
-// Return a copy of template with each occurrence of @(foo) replaced
-// by values[foo].
-String expandTemplate(String template, Map<String, String> values) {
-  // Matches @(foo), match[1] == 'foo'
-  final RegExp tokenRE = RegExp(r'@\(([\w ]+)\)', multiLine: true);
-  return template.replaceAllMapped(tokenRE, (Match match) {
-    if (match.groupCount != 1)
-      throw SampleError('bad template keyword $match[0]');
-    final String keyword = match[1];
-    return values[keyword] ?? '';
-  });
-}
-
-void writeExpandedTemplate(File output, String template, Map<String, String> values) {
-  output.writeAsStringSync(expandTemplate(template, values));
-  logMessage('wrote $output');
-}
-
-class SampleInfo {
-  SampleInfo(this.sourceFile, this.commit);
-
-  final File sourceFile;
-  final String commit;
-  String sourceCode;
-  Map<String, String> commentValues;
-
-  // If sourceFile is lib/foo.dart then sourceName is foo. The sourceName
-  // is used to create derived filenames like foo.md or foo.png.
-  String get sourceName => basenameWithoutExtension(sourceFile.path);
-
-  // The website's link to this page will be /catalog/samples/@(link)/.
-  String get link => sourceName.replaceAll('_', '-');
-
-  // The name of the widget class that defines this sample app, like 'FooSample'.
-  String get sampleClass => commentValues['sample'];
-
-  // The value of the 'Classes:' comment as a list of class names.
-  Iterable<String> get highlightedClasses {
-    final String classNames = commentValues['classes'];
-    if (classNames == null)
-      return const <String>[];
-    return classNames.split(',').map<String>((String s) => s.trim()).where((String s) => s.isNotEmpty);
-  }
-
-  // The relative import path for this sample, like '../lib/foo.dart'.
-  String get importPath => '..' + Platform.pathSeparator + sourceFile.path;
-
-  // Return true if we're able to find the "Sample Catalog" comment in the
-  // sourceFile, and we're able to load its keyword/value pairs into
-  // the commentValues Map. The rest of the file's contents are saved
-  // in sourceCode.
-  bool initialize() {
-    final String contents = sourceFile.readAsStringSync();
-
-    final RegExp startRE = RegExp(r'^/\*\s+^Sample\s+Catalog', multiLine: true);
-    final RegExp endRE = RegExp(r'^\*/', multiLine: true);
-    final Match startMatch = startRE.firstMatch(contents);
-    if (startMatch == null)
-      return false;
-
-    final int startIndex = startMatch.end;
-    final Match endMatch = endRE.firstMatch(contents.substring(startIndex));
-    if (endMatch == null)
-      return false;
-
-    final String comment = contents.substring(startIndex, startIndex + endMatch.start);
-    sourceCode = contents.substring(0, startMatch.start) + contents.substring(startIndex + endMatch.end);
-    if (sourceCode.trim().isEmpty)
-      throw SampleError('did not find any source code in $sourceFile');
-
-    final RegExp keywordsRE = RegExp(sampleCatalogKeywords, multiLine: true);
-    final List<Match> keywordMatches = keywordsRE.allMatches(comment).toList();
-    if (keywordMatches.isEmpty)
-      throw SampleError('did not find any keywords in the Sample Catalog comment in $sourceFile');
-
-    commentValues = <String, String>{};
-    for (int i = 0; i < keywordMatches.length; i += 1) {
-      final String keyword = comment.substring(keywordMatches[i].start, keywordMatches[i].end - 1);
-      final String value = comment.substring(
-        keywordMatches[i].end,
-        i == keywordMatches.length - 1 ? null : keywordMatches[i + 1].start,
-      );
-      commentValues[keyword.toLowerCase()] = value.trim();
-    }
-    commentValues['name'] = sourceName;
-    commentValues['path'] = 'examples/catalog/${sourceFile.path}';
-    commentValues['source'] = sourceCode.trim();
-    commentValues['link'] = link;
-    commentValues['android screenshot'] = 'https://storage.googleapis.com/flutter-catalog/$commit/${sourceName}_small.png';
-
-    return true;
-  }
-}
-
-void generate(String commit) {
-  initialize();
-
-  final List<SampleInfo> samples = <SampleInfo>[];
-  for (final FileSystemEntity entity in sampleDirectory.listSync()) {
-    if (entity is File && entity.path.endsWith('.dart')) {
-      final SampleInfo sample = SampleInfo(entity, commit);
-      if (sample.initialize()) // skip files that lack the Sample Catalog comment
-        samples.add(sample);
-    }
-  }
-
-  // Causes the generated imports to appear in alphabetical order.
-  // Avoid complaints from flutter lint.
-  samples.sort((SampleInfo a, SampleInfo b) {
-    return a.sourceName.compareTo(b.sourceName);
-  });
-
-  final String entryTemplate = inputFile('bin', 'entry.md.template').readAsStringSync();
-
-  // Write the sample catalog's home page: index.md
-  final Iterable<String> entries = samples.map<String>((SampleInfo sample) {
-    return expandTemplate(entryTemplate, sample.commentValues);
-  });
-  writeExpandedTemplate(
-    outputFile('index.md'),
-    inputFile('bin', 'index.md.template').readAsStringSync(),
-    <String, String>{
-      'entries': entries.join('\n'),
-    },
-  );
-
-  // Write the sample app files, like animated_list.md
-  for (final SampleInfo sample in samples) {
-    writeExpandedTemplate(
-      outputFile(sample.sourceName + '.md'),
-      inputFile('bin', 'sample_page.md.template').readAsStringSync(),
-      sample.commentValues,
-    );
-  }
-
-  // For each unique class listened in a sample app's "Classes:" list, generate
-  // a file that's structurally the same as index.md but only contains samples
-  // that feature one class. For example AnimatedList_index.md would only
-  // include samples that had AnimatedList in their "Classes:" list.
-  final Map<String, List<SampleInfo>> classToSamples = <String, List<SampleInfo>>{};
-  for (final SampleInfo sample in samples) {
-    for (final String className in sample.highlightedClasses) {
-      classToSamples[className] ??= <SampleInfo>[];
-      classToSamples[className].add(sample);
-    }
-  }
-  for (final String className in classToSamples.keys) {
-    final Iterable<String> entries = classToSamples[className].map<String>((SampleInfo sample) {
-      return expandTemplate(entryTemplate, sample.commentValues);
-    });
-    writeExpandedTemplate(
-      outputFile('${className}_index.md'),
-      inputFile('bin', 'class_index.md.template').readAsStringSync(),
-      <String, String>{
-        'class': className,
-        'entries': entries.join('\n'),
-        'link': '${className}_index',
-      },
-    );
-  }
-
-  // Write screenshot.dart, a "test" app that displays each sample
-  // app in turn when the app is tapped.
-  writeExpandedTemplate(
-    outputFile('screenshot.dart', driverDirectory),
-    inputFile('bin', 'screenshot.dart.template').readAsStringSync(),
-    <String, String>{
-      'imports': samples.map<String>((SampleInfo page) {
-        return "import '${page.importPath}' show ${page.sampleClass};\n";
-      }).join(),
-      'widgets': samples.map<String>((SampleInfo sample) {
-        return 'new ${sample.sampleClass}(),\n';
-      }).join(),
-    },
-  );
-
-  // Write screenshot_test.dart, a test driver for screenshot.dart
-  // that collects screenshots of each app and saves them.
-  writeExpandedTemplate(
-    outputFile('screenshot_test.dart', driverDirectory),
-    inputFile('bin', 'screenshot_test.dart.template').readAsStringSync(),
-    <String, String>{
-      'paths': samples.map<String>((SampleInfo sample) {
-        return "'${outputFile(sample.sourceName + '.png').path}'";
-      }).join(',\n'),
-    },
-  );
-
-  // For now, the website's index.json file must be updated by hand.
-  logMessage('The following entries must appear in _data/catalog/widgets.json');
-  for (final String className in classToSamples.keys)
-    logMessage('"sample": "${className}_index"');
-}
-
-void main(List<String> args) {
-  if (args.length != 1) {
-    logError(
-      'Usage (cd examples/catalog/; dart bin/sample_page.dart commit)\n'
-      'The flutter commit hash locates screenshots on storage.googleapis.com/flutter-catalog/'
-    );
-    exit(255);
-  }
-  try {
-    generate(args[0]);
-  } catch (error) {
-    logError(
-      'Error: sample_page.dart failed: $error\n'
-      'This sample_page.dart app expects to be run from the examples/catalog directory. '
-      'More information can be found in examples/catalog/README.md.'
-    );
-    exit(255);
-  }
-  exit(0);
-}

examples/catalog/bin/sample_page.md.template

----
-layout: page
-title: "@(title)"
-permalink: /catalog/samples/@(link)/
----
-
-@(summary)
-
-<p>
-  <div class="container-fluid">
-    <div class="row">
-      <div class="col-md-4">
-        <div class="panel panel-default">
-          <div class="panel-body" style="padding: 16px 32px;">
-            <img style="border:1px solid #000000" src="@(android screenshot)" alt="Android screenshot" class="img-responsive">
-          </div>
-          <div class="panel-footer">
-            Android screenshot
-          </div>
-        </div>
-      </div>
-    </div>
-  </div>
-</p>
-
-@(description)
-
-Try this app out by creating a new project with `flutter create` and replacing the contents of `lib/main.dart` with the code that follows.
-
-```dart
-@(source)
-```
-
-<h2>See also:</h2>
-@(see also)
-- The source code in [@(path)](https://github.com/flutter/flutter/blob/master/@(path)).

examples/catalog/bin/screenshot.dart.template

-// This file was generated using bin/screenshot.dart.template and
-// bin/sample_page.dart. For more information see README.md.
-
-import 'package:flutter_driver/driver_extension.dart';
-import 'package:flutter/material.dart';
-
-@(imports)
-
-class SampleScreenshots extends StatefulWidget {
-  @override
-  SampleScreenshotsState createState() => new SampleScreenshotsState();
-}
-
-class SampleScreenshotsState extends State<SampleScreenshots> {
-  final List<Widget> samples = <Widget>[
-    @(widgets)
-  ];
-  int sampleIndex = 0;
-
-  @override
-  Widget build(BuildContext context) {
-    return new GestureDetector(
-      key: const ValueKey<String>('screenshotGestureDetector'),
-      behavior: HitTestBehavior.opaque,
-      onTap: () {
-        setState(() {
-          sampleIndex += 1;
-        });
-      },
-      child: new IgnorePointer(
-        child: samples[sampleIndex % samples.length],
-      ),
-    );
-  }
-}
-
-void main() {
-  enableFlutterDriverExtension();
-  WidgetsApp.debugAllowBannerOverride = false; // No "debug" banner.
-  runApp(new SampleScreenshots());
-}

examples/catalog/bin/screenshot_test.dart.template

-// This file was generated using bin/screenshot_test.dart.template and
-// bin/sample_page.dart. For more information see README.md.
-
-import 'dart:async';
-import 'dart:io';
-
-import 'package:flutter_driver/flutter_driver.dart';
-import 'package:test/test.dart';
-
-void main() {
-  group('sample screenshots', () {
-    FlutterDriver driver;
-
-    setUpAll(() async {
-      driver = await FlutterDriver.connect();
-    });
-
-    tearDownAll(() async {
-      await driver?.close();
-    });
-
-    test('take sample screenshots', () async {
-      final List<String> paths = <String>[
-        @(paths)
-      ];
-      for (String path in paths) {
-        await driver.waitUntilNoTransientCallbacks();
-        final List<int> pixels = await driver.screenshot();
-        final File file = new File(path);
-        await file.writeAsBytes(pixels);
-        print('wrote $file');
-        await driver.tap(find.byValueKey('screenshotGestureDetector'));
-      }
-    });
-  });
-}

examples/catalog/ios/Flutter/AppFrameworkInfo.plist

-<?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>$(DEVELOPMENT_LANGUAGE)</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>9.0</string>
-</dict>
-</plist>

examples/catalog/ios/Flutter/Debug.xcconfig

-#include "Generated.xcconfig"

examples/catalog/ios/Flutter/Release.xcconfig

-#include "Generated.xcconfig"

examples/catalog/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata

-<?xml version="1.0" encoding="UTF-8"?>
-<Workspace
-   version = "1.0">
-   <FileRef
-      location = "group:Runner.xcodeproj">
-   </FileRef>
-   <FileRef
-      location = "group:Pods/Pods.xcodeproj">
-   </FileRef>
-</Workspace>

examples/catalog/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

-<?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>IDEDidComputeMac32BitWarning</key>
-	<true/>
-</dict>
-</plist>

examples/catalog/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

-<?xml version="1.0" encoding="UTF-8"?>
-<Scheme
-   LastUpgradeVersion = "1020"
-   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"
-      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"
-      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 = "Release"
-      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>

examples/catalog/ios/Runner.xcworkspace/contents.xcworkspacedata

-<?xml version="1.0" encoding="UTF-8"?>
-<Workspace
-   version = "1.0">
-   <FileRef
-      location = "group:Runner.xcodeproj">
-   </FileRef>
-</Workspace>

examples/catalog/ios/Runner/AppDelegate.h

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#import <UIKit/UIKit.h>
-#import <Flutter/Flutter.h>
-
-@interface AppDelegate : FlutterAppDelegate
-
-@end

examples/catalog/ios/Runner/AppDelegate.m

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#import "AppDelegate.h"
-#import "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

examples/catalog/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json

-{
-  "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"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}

examples/catalog/ios/Runner/Base.lproj/LaunchScreen.storyboard

-<?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" launchScreen="YES" useTraitCollections="YES" initialViewController="01J-lp-oVM">
-    <dependencies>
-        <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="EHf-IW-A2E">
-            <objects>
-                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
-                    <layoutGuides>
-                        <viewControllerLayoutGuide type="top" id="Llm-lL-Icb"/>
-                        <viewControllerLayoutGuide type="bottom" id="xb3-aO-Qok"/>
-                    </layoutGuides>
-                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
-                        <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="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="53" y="375"/>
-        </scene>
-    </scenes>
-</document>

examples/catalog/ios/Runner/Base.lproj/Main.storyboard

-<?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>

examples/catalog/ios/Runner/Info.plist

-<?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>$(DEVELOPMENT_LANGUAGE)</string>
-	<key>CFBundleExecutable</key>
-	<string>$(EXECUTABLE_NAME)</string>
-	<key>CFBundleIdentifier</key>
-	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
-	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
-	<key>CFBundleName</key>
-	<string>animated_list</string>
-	<key>CFBundlePackageType</key>
-	<string>APPL</string>
-	<key>CFBundleShortVersionString</key>
-	<string>1.0</string>
-	<key>CFBundleSignature</key>
-	<string>????</string>
-	<key>CFBundleVersion</key>
-	<string>1</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>

examples/catalog/ios/Runner/main.m

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#import <UIKit/UIKit.h>
-#import <Flutter/Flutter.h>
-#import "AppDelegate.h"
-
-int main(int argc, char * argv[]) {
-    @autoreleasepool {
-        return UIApplicationMain(argc, argv, nil,
-                                 NSStringFromClass([AppDelegate class]));
-    }
-}

examples/catalog/lib/animated_list.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'package:flutter/foundation.dart';
-import 'package:flutter/material.dart';
-
-class AnimatedListSample extends StatefulWidget {
-  @override
-  _AnimatedListSampleState createState() => _AnimatedListSampleState();
-}
-
-class _AnimatedListSampleState extends State<AnimatedListSample> {
-  final GlobalKey<AnimatedListState> _listKey = GlobalKey<AnimatedListState>();
-  ListModel<int> _list;
-  int _selectedItem;
-  int _nextItem; // The next item inserted when the user presses the '+' button.
-
-  @override
-  void initState() {
-    super.initState();
-    _list = ListModel<int>(
-      listKey: _listKey,
-      initialItems: <int>[0, 1, 2],
-      removedItemBuilder: _buildRemovedItem,
-    );
-    _nextItem = 3;
-  }
-
-  // Used to build list items that haven't been removed.
-  Widget _buildItem(BuildContext context, int index, Animation<double> animation) {
-    return CardItem(
-      animation: animation,
-      item: _list[index],
-      selected: _selectedItem == _list[index],
-      onTap: () {
-        setState(() {
-          _selectedItem = _selectedItem == _list[index] ? null : _list[index];
-        });
-      },
-    );
-  }
-
-  // Used to build an item after it has been removed from the list. This method is
-  // needed because a removed item remains visible until its animation has
-  // completed (even though it's gone as far this ListModel is concerned).
-  // The widget will be used by the [AnimatedListState.removeItem] method's
-  // [AnimatedListRemovedItemBuilder] parameter.
-  Widget _buildRemovedItem(int item, BuildContext context, Animation<double> animation) {
-    return CardItem(
-      animation: animation,
-      item: item,
-      selected: false,
-      // No gesture detector here: we don't want removed items to be interactive.
-    );
-  }
-
-  // Insert the "next item" into the list model.
-  void _insert() {
-    final int index = _selectedItem == null ? _list.length : _list.indexOf(_selectedItem);
-    _list.insert(index, _nextItem++);
-  }
-
-  // Remove the selected item from the list model.
-  void _remove() {
-    if (_selectedItem != null) {
-      _list.removeAt(_list.indexOf(_selectedItem));
-      setState(() {
-        _selectedItem = null;
-      });
-    }
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return MaterialApp(
-      home: Scaffold(
-        appBar: AppBar(
-          title: const Text('AnimatedList'),
-          actions: <Widget>[
-            IconButton(
-              icon: const Icon(Icons.add_circle),
-              onPressed: _insert,
-              tooltip: 'insert a new item',
-            ),
-            IconButton(
-              icon: const Icon(Icons.remove_circle),
-              onPressed: _remove,
-              tooltip: 'remove the selected item',
-            ),
-          ],
-        ),
-        body: Padding(
-          padding: const EdgeInsets.all(16.0),
-          child: AnimatedList(
-            key: _listKey,
-            initialItemCount: _list.length,
-            itemBuilder: _buildItem,
-          ),
-        ),
-      ),
-    );
-  }
-}
-
-/// Keeps a Dart List in sync with an AnimatedList.
-///
-/// The [insert] and [removeAt] methods apply to both the internal list and the
-/// animated list that belongs to [listKey].
-///
-/// This class only exposes as much of the Dart List API as is needed by the
-/// sample app. More list methods are easily added, however methods that mutate the
-/// list must make the same changes to the animated list in terms of
-/// [AnimatedListState.insertItem] and [AnimatedList.removeItem].
-class ListModel<E> {
-  ListModel({
-    @required this.listKey,
-    @required this.removedItemBuilder,
-    Iterable<E> initialItems,
-  }) : assert(listKey != null),
-       assert(removedItemBuilder != null),
-       _items = initialItems?.toList() ?? <E>[];
-
-  final GlobalKey<AnimatedListState> listKey;
-  final Widget Function(E item, BuildContext context, Animation<double> animation) removedItemBuilder;
-  final List<E> _items;
-
-  AnimatedListState get _animatedList => listKey.currentState;
-
-  void insert(int index, E item) {
-    _items.insert(index, item);
-    _animatedList.insertItem(index);
-  }
-
-  E removeAt(int index) {
-    final E removedItem = _items.removeAt(index);
-    if (removedItem != null) {
-      _animatedList.removeItem(index, (BuildContext context, Animation<double> animation) {
-        return removedItemBuilder(removedItem, context, animation);
-      });
-    }
-    return removedItem;
-  }
-
-  int get length => _items.length;
-  E operator [](int index) => _items[index];
-  int indexOf(E item) => _items.indexOf(item);
-}
-
-/// Displays its integer item as 'item N' on a Card whose color is based on
-/// the item's value. The text is displayed in bright green if selected is true.
-/// This widget's height is based on the animation parameter, it varies
-/// from 0 to 128 as the animation varies from 0.0 to 1.0.
-class CardItem extends StatelessWidget {
-  const CardItem({
-    Key key,
-    @required this.animation,
-    this.onTap,
-    @required this.item,
-    this.selected = false,
-  }) : assert(animation != null),
-       assert(item != null && item >= 0),
-       assert(selected != null),
-       super(key: key);
-
-  final Animation<double> animation;
-  final VoidCallback onTap;
-  final int item;
-  final bool selected;
-
-  @override
-  Widget build(BuildContext context) {
-    TextStyle textStyle = Theme.of(context).textTheme.headline4;
-    if (selected)
-      textStyle = textStyle.copyWith(color: Colors.lightGreenAccent[400]);
-    return Padding(
-      padding: const EdgeInsets.all(2.0),
-      child: SizeTransition(
-        axis: Axis.vertical,
-        sizeFactor: animation,
-        child: GestureDetector(
-          behavior: HitTestBehavior.opaque,
-          onTap: onTap,
-          child: SizedBox(
-            height: 128.0,
-            child: Card(
-              color: Colors.primaries[item % Colors.primaries.length],
-              child: Center(
-                child: Text('Item $item', style: textStyle),
-              ),
-            ),
-          ),
-        ),
-      ),
-    );
-  }
-}
-
-void main() {
-  runApp(AnimatedListSample());
-}
-
-/*
-Sample Catalog
-
-Title: AnimatedList
-
-Summary: An AnimatedList for displaying a list of cards that stay
-in sync with an app-specific ListModel. When an item is added to or removed
-from the model, the corresponding card animates in or out of view.
-
-Description:
-Tap an item to select it, tap it again to unselect. Tap '+' to insert at the
-selected item, '-' to remove the selected item. The tap handlers add or
-remove items from a `ListModel<E>`, a simple encapsulation of `List<E>`
-that keeps the AnimatedList in sync. The list model has a GlobalKey for
-its animated list. It uses the key to call the insertItem and removeItem
-methods defined by AnimatedListState.
-
-Classes: AnimatedList, AnimatedListState
-
-Sample: AnimatedListSample
-
-See also:
-  - The "Components-Lists: Controls" section of the material design specification:
-    <https://material.io/guidelines/components/lists-controls.html#>
-*/

examples/catalog/lib/app_bar_bottom.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'package:flutter/material.dart';
-
-class AppBarBottomSample extends StatefulWidget {
-  @override
-  _AppBarBottomSampleState createState() => _AppBarBottomSampleState();
-}
-
-class _AppBarBottomSampleState extends State<AppBarBottomSample> with SingleTickerProviderStateMixin {
-  TabController _tabController;
-
-  @override
-  void initState() {
-    super.initState();
-    _tabController = TabController(vsync: this, length: choices.length);
-  }
-
-  @override
-  void dispose() {
-    _tabController.dispose();
-    super.dispose();
-  }
-
-  void _nextPage(int delta) {
-    final int newIndex = _tabController.index + delta;
-    if (newIndex < 0 || newIndex >= _tabController.length)
-      return;
-    _tabController.animateTo(newIndex);
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return MaterialApp(
-      home: Scaffold(
-        appBar: AppBar(
-          title: const Text('AppBar Bottom Widget'),
-          leading: IconButton(
-            tooltip: 'Previous choice',
-            icon: const Icon(Icons.arrow_back),
-            onPressed: () { _nextPage(-1); },
-          ),
-          actions: <Widget>[
-            IconButton(
-              icon: const Icon(Icons.arrow_forward),
-              tooltip: 'Next choice',
-              onPressed: () { _nextPage(1); },
-            ),
-          ],
-          bottom: PreferredSize(
-            preferredSize: const Size.fromHeight(48.0),
-            child: Theme(
-              data: Theme.of(context).copyWith(accentColor: Colors.white),
-              child: Container(
-                height: 48.0,
-                alignment: Alignment.center,
-                child: TabPageSelector(controller: _tabController),
-              ),
-            ),
-          ),
-        ),
-        body: TabBarView(
-          controller: _tabController,
-          children: choices.map<Widget>((Choice choice) {
-            return Padding(
-              padding: const EdgeInsets.all(16.0),
-              child: ChoiceCard(choice: choice),
-            );
-          }).toList(),
-        ),
-      ),
-    );
-  }
-}
-
-class Choice {
-  const Choice({ this.title, this.icon });
-  final String title;
-  final IconData icon;
-}
-
-const List<Choice> choices = <Choice>[
-  Choice(title: 'CAR', icon: Icons.directions_car),
-  Choice(title: 'BICYCLE', icon: Icons.directions_bike),
-  Choice(title: 'BOAT', icon: Icons.directions_boat),
-  Choice(title: 'BUS', icon: Icons.directions_bus),
-  Choice(title: 'TRAIN', icon: Icons.directions_railway),
-  Choice(title: 'WALK', icon: Icons.directions_walk),
-];
-
-class ChoiceCard extends StatelessWidget {
-  const ChoiceCard({ Key key, this.choice }) : super(key: key);
-
-  final Choice choice;
-
-  @override
-  Widget build(BuildContext context) {
-    final TextStyle textStyle = Theme.of(context).textTheme.headline4;
-    return Card(
-      color: Colors.white,
-      child: Center(
-        child: Column(
-          mainAxisSize: MainAxisSize.min,
-          crossAxisAlignment: CrossAxisAlignment.center,
-          children: <Widget>[
-            Icon(choice.icon, size: 128.0, color: textStyle.color),
-            Text(choice.title, style: textStyle),
-          ],
-        ),
-      ),
-    );
-  }
-}
-
-void main() {
-  runApp(AppBarBottomSample());
-}
-
-/*
-Sample Catalog
-
-Title: AppBar with a custom bottom widget.
-
-Summary: An AppBar that includes a bottom widget. Any widget
-with a PreferredSize can appear at the bottom of an AppBar.
-
-Summary: Any widget with a PreferredSize can appear at the bottom of an AppBar.
-
-Description:
-Typically an AppBar's bottom widget is a TabBar however any widget with a
-PreferredSize can be used. In this app, the app bar's bottom widget is a
-TabPageSelector that displays the relative position of the selected page
-in the app's TabBarView. The arrow buttons in the toolbar part of the app
-bar and they select the previous or the next page.
-
-Classes: AppBar, PreferredSize, TabBarView, TabController
-
-Sample: AppBarBottomSample
-
-See also:
-  - The "Components-Tabs" section of the material design specification:
-    <https://material.io/go/design-tabs>
-*/

examples/catalog/lib/basic_app_bar.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'package:flutter/material.dart';
-
-// This app is a stateful, it tracks the user's current choice.
-class BasicAppBarSample extends StatefulWidget {
-  @override
-  _BasicAppBarSampleState createState() => _BasicAppBarSampleState();
-}
-
-class _BasicAppBarSampleState extends State<BasicAppBarSample> {
-  Choice _selectedChoice = choices[0]; // The app's "state".
-
-  void _select(Choice choice) {
-    setState(() { // Causes the app to rebuild with the new _selectedChoice.
-      _selectedChoice = choice;
-    });
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return MaterialApp(
-      home: Scaffold(
-        appBar: AppBar(
-          title: const Text('Basic AppBar'),
-          actions: <Widget>[
-            IconButton( // action button
-              icon: Icon(choices[0].icon),
-              onPressed: () { _select(choices[0]); },
-            ),
-            IconButton( // action button
-              icon: Icon(choices[1].icon),
-              onPressed: () { _select(choices[1]); },
-            ),
-            PopupMenuButton<Choice>( // overflow menu
-              onSelected: _select,
-              itemBuilder: (BuildContext context) {
-                return choices.skip(2).map<PopupMenuItem<Choice>>((Choice choice) {
-                  return PopupMenuItem<Choice>(
-                    value: choice,
-                    child: Text(choice.title),
-                  );
-                }).toList();
-              },
-            ),
-          ],
-        ),
-        body: Padding(
-          padding: const EdgeInsets.all(16.0),
-          child: ChoiceCard(choice: _selectedChoice),
-        ),
-      ),
-    );
-  }
-}
-
-class Choice {
-  const Choice({ this.title, this.icon });
-  final String title;
-  final IconData icon;
-}
-
-const List<Choice> choices = <Choice>[
-  Choice(title: 'Car', icon: Icons.directions_car),
-  Choice(title: 'Bicycle', icon: Icons.directions_bike),
-  Choice(title: 'Boat', icon: Icons.directions_boat),
-  Choice(title: 'Bus', icon: Icons.directions_bus),
-  Choice(title: 'Train', icon: Icons.directions_railway),
-  Choice(title: 'Walk', icon: Icons.directions_walk),
-];
-
-class ChoiceCard extends StatelessWidget {
-  const ChoiceCard({ Key key, this.choice }) : super(key: key);
-
-  final Choice choice;
-
-  @override
-  Widget build(BuildContext context) {
-    final TextStyle textStyle = Theme.of(context).textTheme.headline4;
-    return Card(
-      color: Colors.white,
-      child: Center(
-        child: Column(
-          mainAxisSize: MainAxisSize.min,
-          crossAxisAlignment: CrossAxisAlignment.center,
-          children: <Widget>[
-            Icon(choice.icon, size: 128.0, color: textStyle.color),
-            Text(choice.title, style: textStyle),
-          ],
-        ),
-      ),
-    );
-  }
-}
-
-void main() {
-  runApp(BasicAppBarSample());
-}
-
-/*
-Sample Catalog
-
-Title: AppBar Basics
-
-Summary: A basic AppBar with a title, actions, and an overflow dropdown menu.
-
-Description:
-An app that displays one of a half dozen choices with an icon and a title.
-The two most common choices are available as action buttons and the remaining
-choices are included in the overflow dropdown menu.
-
-Classes: AppBar, IconButton, PopupMenuButton, Scaffold
-
-Sample: BasicAppBarSample
-
-See also:
-  - The "Layout-Structure" section of the material design specification:
-    <https://material.io/guidelines/layout/structure.html#structure-app-bar>
-*/

examples/catalog/lib/custom_semantics.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'package:flutter/material.dart';
-
-/// A [ListTile] containing a dropdown menu that exposes itself as an
-/// "Adjustable" to screen readers (e.g. TalkBack on Android and VoiceOver on
-/// iOS).
-///
-/// This allows screen reader users to swipe up/down (on iOS) or use the volume
-/// keys (on Android) to switch between the values in the dropdown menu.
-/// Depending on what the values in the dropdown menu are this can be a more
-/// intuitive way of switching values compared to exposing the content of the
-/// drop down menu as a screen overlay from which the user can select.
-///
-/// Users that do not use a screen reader will just see a regular dropdown menu.
-class AdjustableDropdownListTile extends StatelessWidget {
-  const AdjustableDropdownListTile({
-    this.label,
-    this.value,
-    this.items,
-    this.onChanged,
-  });
-
-  final String label;
-  final String value;
-  final List<String> items;
-  final ValueChanged<String> onChanged;
-
-  @override
-  Widget build(BuildContext context) {
-    final int indexOfValue = items.indexOf(value);
-    assert(indexOfValue != -1);
-
-    final bool canIncrease = indexOfValue < items.length - 1;
-    final bool canDecrease = indexOfValue > 0;
-
-    return Semantics(
-      container: true,
-      label: label,
-      value: value,
-      increasedValue: canIncrease ? _increasedValue : null,
-      decreasedValue: canDecrease ? _decreasedValue : null,
-      onIncrease: canIncrease ? _performIncrease : null,
-      onDecrease: canDecrease ? _performDecrease : null,
-      child: ExcludeSemantics(
-        child: ListTile(
-          title: Text(label),
-          trailing: DropdownButton<String>(
-            value: value,
-            onChanged: onChanged,
-            items: items.map<DropdownMenuItem<String>>((String item) {
-              return DropdownMenuItem<String>(
-                value: item,
-                child: Text(item),
-              );
-            }).toList(),
-          ),
-        ),
-      ),
-    );
-  }
-
-  String get _increasedValue {
-    final int indexOfValue = items.indexOf(value);
-    assert(indexOfValue < items.length - 1);
-    return items[indexOfValue + 1];
-  }
-
-  String get _decreasedValue {
-    final int indexOfValue = items.indexOf(value);
-    assert(indexOfValue > 0);
-    return items[indexOfValue - 1];
-  }
-
-  void _performIncrease() => onChanged(_increasedValue);
-
-  void _performDecrease() => onChanged(_decreasedValue);
-}
-
-class AdjustableDropdownExample extends StatefulWidget {
-  @override
-  AdjustableDropdownExampleState createState() => AdjustableDropdownExampleState();
-}
-
-class AdjustableDropdownExampleState extends State<AdjustableDropdownExample> {
-
-  final List<String> items = <String>[
-    '1 second',
-    '5 seconds',
-    '15 seconds',
-    '30 seconds',
-    '1 minute',
-  ];
-  String timeout;
-
-  @override
-  Widget build(BuildContext context) {
-    return MaterialApp(
-      home: Scaffold(
-        appBar: AppBar(
-          title: const Text('Adjustable DropDown'),
-        ),
-        body: ListView(
-          children: <Widget>[
-            AdjustableDropdownListTile(
-              label: 'Timeout',
-              value: timeout ?? items[2],
-              items: items,
-              onChanged: (String value) {
-                setState(() {
-                  timeout = value;
-                });
-              },
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-}
-
-void main() {
-  runApp(AdjustableDropdownExample());
-}
-
-/*
-Sample Catalog
-
-Title: AdjustableDropdownListTile
-
-Summary: A dropdown menu that exposes itself as an "Adjustable" to screen
-readers.
-
-Description:
-This app presents a dropdown menu to the user that exposes itself as an
-"Adjustable" to screen readers (e.g. TalkBack on Android and VoiceOver on iOS).
-This allows users of screen readers to cycle through the values of the dropdown
-menu by swiping up or down on the screen with one finger (on iOS) or by using
-the volume keys (on Android). Depending on the values in the dropdown this
-behavior may be more intuitive to screen reader users compared to showing the
-classical dropdown overlay on screen to choose a value.
-
-When the screen reader is turned off, the dropdown menu behaves like any
-dropdown menu would.
-
-Classes: Semantics
-
-Sample: AdjustableDropdownListTile
-
-*/

examples/catalog/lib/expansion_tile_sample.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'package:flutter/material.dart';
-
-class ExpansionTileSample extends StatelessWidget {
-  @override
-  Widget build(BuildContext context) {
-    return MaterialApp(
-      home: Scaffold(
-        appBar: AppBar(
-          title: const Text('ExpansionTile'),
-        ),
-        body: ListView.builder(
-          itemBuilder: (BuildContext context, int index) => EntryItem(data[index]),
-          itemCount: data.length,
-        ),
-      ),
-    );
-  }
-}
-
-// One entry in the multilevel list displayed by this app.
-class Entry {
-  Entry(this.title, [this.children = const <Entry>[]]);
-  final String title;
-  final List<Entry> children;
-}
-
-// The entire multilevel list displayed by this app.
-final List<Entry> data = <Entry>[
-  Entry('Chapter A',
-    <Entry>[
-      Entry('Section A0',
-        <Entry>[
-          Entry('Item A0.1'),
-          Entry('Item A0.2'),
-          Entry('Item A0.3'),
-        ],
-      ),
-      Entry('Section A1'),
-      Entry('Section A2'),
-    ],
-  ),
-  Entry('Chapter B',
-    <Entry>[
-      Entry('Section B0'),
-      Entry('Section B1'),
-    ],
-  ),
-  Entry('Chapter C',
-    <Entry>[
-      Entry('Section C0'),
-      Entry('Section C1'),
-      Entry('Section C2',
-        <Entry>[
-          Entry('Item C2.0'),
-          Entry('Item C2.1'),
-          Entry('Item C2.2'),
-          Entry('Item C2.3'),
-        ],
-      ),
-    ],
-  ),
-];
-
-// Displays one Entry. If the entry has children then it's displayed
-// with an ExpansionTile.
-class EntryItem extends StatelessWidget {
-  const EntryItem(this.entry);
-
-  final Entry entry;
-
-  Widget _buildTiles(Entry root) {
-    if (root.children.isEmpty)
-      return ListTile(title: Text(root.title));
-    return ExpansionTile(
-      key: PageStorageKey<Entry>(root),
-      title: Text(root.title),
-      children: root.children.map<Widget>(_buildTiles).toList(),
-    );
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return _buildTiles(entry);
-  }
-}
-
-void main() {
-  runApp(ExpansionTileSample());
-}
-
-/*
-Sample Catalog
-
-Title: ExpansionTile
-
-Summary: An ExpansionTile for building nested lists, with two or more levels.
-
-Description:
-This app displays hierarchical data with ExpansionTiles. Tapping a tile
-expands or collapses the view of its children. When a tile is collapsed
-its children are disposed so that the widget footprint of the list only
-reflects what's visible.
-
-When displayed within a scrollable that creates its list items lazily,
-like a scrollable list created with `ListView.builder()`, ExpansionTiles
-can be quite efficient, particularly for material design "expand/collapse"
-lists.
-
-
-Classes: ExpansionTile, ListView
-
-Sample: ExpansionTileSample
-
-See also:
-  - The "expand/collapse" part of the material design specification:
-    <https://material.io/guidelines/components/lists-controls.html#lists-controls-types-of-list-controls>
-*/

examples/catalog/lib/main.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'package:flutter/widgets.dart';
-
-void main() {
-  runApp(
-    const Center(
-      child: Text(
-        'Instead run:\nflutter run lib/xxx.dart',
-        textDirection: TextDirection.ltr,
-      ),
-    ),
-  );
-}

examples/catalog/lib/tabbed_app_bar.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'package:flutter/material.dart';
-
-class TabbedAppBarSample extends StatelessWidget {
-  @override
-  Widget build(BuildContext context) {
-    return MaterialApp(
-      home: DefaultTabController(
-        length: choices.length,
-        child: Scaffold(
-          appBar: AppBar(
-            title: const Text('Tabbed AppBar'),
-            bottom: TabBar(
-              isScrollable: true,
-              tabs: choices.map<Widget>((Choice choice) {
-                return Tab(
-                  text: choice.title,
-                  icon: Icon(choice.icon),
-                );
-              }).toList(),
-            ),
-          ),
-          body: TabBarView(
-            children: choices.map<Widget>((Choice choice) {
-              return Padding(
-                padding: const EdgeInsets.all(16.0),
-                child: ChoiceCard(choice: choice),
-              );
-            }).toList(),
-          ),
-        ),
-      ),
-    );
-  }
-}
-
-class Choice {
-  const Choice({ this.title, this.icon });
-  final String title;
-  final IconData icon;
-}
-
-const List<Choice> choices = <Choice>[
-  Choice(title: 'CAR', icon: Icons.directions_car),
-  Choice(title: 'BICYCLE', icon: Icons.directions_bike),
-  Choice(title: 'BOAT', icon: Icons.directions_boat),
-  Choice(title: 'BUS', icon: Icons.directions_bus),
-  Choice(title: 'TRAIN', icon: Icons.directions_railway),
-  Choice(title: 'WALK', icon: Icons.directions_walk),
-];
-
-class ChoiceCard extends StatelessWidget {
-  const ChoiceCard({ Key key, this.choice }) : super(key: key);
-
-  final Choice choice;
-
-  @override
-  Widget build(BuildContext context) {
-    final TextStyle textStyle = Theme.of(context).textTheme.headline4;
-    return Card(
-      color: Colors.white,
-      child: Center(
-        child: Column(
-          mainAxisSize: MainAxisSize.min,
-          crossAxisAlignment: CrossAxisAlignment.center,
-          children: <Widget>[
-            Icon(choice.icon, size: 128.0, color: textStyle.color),
-            Text(choice.title, style: textStyle),
-          ],
-        ),
-      ),
-    );
-  }
-}
-
-void main() {
-  runApp(TabbedAppBarSample());
-}
-
-/*
-Sample Catalog
-
-Title: Tabbed AppBar
-
-Summary: An AppBar with a TabBar for navigating pages just below it.
-
-Description:
-A TabBar can be used to navigate among the pages displayed in a TabBarView.
-Although a TabBar is an ordinary widget that can appear anywhere, it's most often
-included in the application's AppBar.
-
-Classes: AppBar, DefaultTabController, TabBar, Scaffold, TabBarView
-
-Sample: TabbedAppBarSample
-
-See also:
-  - The "Components-Tabs" section of the material design specification:
-    <https://material.io/go/design-tabs>
-*/

examples/catalog/pubspec.yaml

-name: sample_catalog
-description: A collection of Flutter sample apps
-
-environment:
-  # The pub client defaults to an <2.0.0 sdk constraint which we need to explicitly overwrite.
-  sdk: ">=2.0.0-dev.68.0 <3.0.0"
-
-dependencies:
-  flutter:
-    sdk: flutter
-  path: 1.8.0-nullsafety.1
-
-  characters: 1.1.0-nullsafety.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  collection: 1.15.0-nullsafety.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  meta: 1.3.0-nullsafety.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  typed_data: 1.3.0-nullsafety.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  vector_math: 2.1.0-nullsafety.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-
-dev_dependencies:
-  flutter_test:
-    sdk: flutter
-  flutter_driver:
-    sdk: flutter
-  test: 1.16.0-nullsafety.5
-
-  _fe_analyzer_shared: 7.0.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  analyzer: 0.39.17 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  archive: 2.0.13 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  args: 1.6.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  async: 2.5.0-nullsafety.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  boolean_selector: 2.1.0-nullsafety.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  charcode: 1.2.0-nullsafety.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  cli_util: 0.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  clock: 1.1.0-nullsafety.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  convert: 2.1.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  coverage: 0.14.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  crypto: 2.1.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  csslib: 0.16.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  fake_async: 1.2.0-nullsafety.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  file: 6.0.0-nullsafety.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  glob: 1.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  html: 0.14.0+3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  http: 0.12.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  http_multi_server: 2.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  http_parser: 3.1.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  io: 0.3.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  js: 0.6.3-nullsafety.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  json_rpc_2: 2.2.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  logging: 0.11.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  matcher: 0.12.10-nullsafety.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  mime: 0.9.7 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  node_interop: 1.1.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  node_io: 1.1.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  node_preamble: 1.4.12 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  package_config: 1.9.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  pedantic: 1.10.0-nullsafety.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  pool: 1.5.0-nullsafety.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  pub_semver: 1.4.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  shelf: 0.7.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  shelf_packages_handler: 2.0.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  shelf_static: 0.2.8 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  shelf_web_socket: 0.2.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  source_map_stack_trace: 2.1.0-nullsafety.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  source_maps: 0.10.10-nullsafety.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  source_span: 1.8.0-nullsafety.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  stack_trace: 1.10.0-nullsafety.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  stream_channel: 2.1.0-nullsafety.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  string_scanner: 1.1.0-nullsafety.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  sync_http: 0.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  term_glyph: 1.2.0-nullsafety.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  test_api: 0.2.19-nullsafety.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  test_core: 0.3.12-nullsafety.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  vm_service: 4.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  vm_service_client: 0.2.6+2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  watcher: 0.9.7+15 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  web_socket_channel: 1.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  webdriver: 2.1.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  webkit_inspection_protocol: 0.7.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  yaml: 2.2.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-
-flutter:
-  uses-material-design: true
-
-# PUBSPEC CHECKSUM: 5ffe

examples/catalog/test/animated_list_test.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'package:flutter/material.dart';
-import 'package:flutter_test/flutter_test.dart';
-import 'package:sample_catalog/animated_list.dart' as animated_list_sample;
-
-void main() {
-  testWidgets('animated_list sample app smoke test', (WidgetTester tester) async {
-    animated_list_sample.main();
-    await tester.pump();
-
-    expect(find.text('Item 0'), findsOneWidget);
-    expect(find.text('Item 1'), findsOneWidget);
-    expect(find.text('Item 2'), findsOneWidget);
-
-    final Finder insertButton = find.byTooltip('insert a new item');
-    final Finder removeButton = find.byTooltip('remove the selected item');
-    expect(insertButton, findsOneWidget);
-    expect(removeButton, findsOneWidget);
-
-    // Remove items 0, 1, 2.
-    await tester.tap(find.text('Item 0'));
-    await tester.tap(removeButton);
-    await tester.pumpAndSettle();
-    await tester.tap(find.text('Item 1'));
-    await tester.tap(removeButton);
-    await tester.pumpAndSettle();
-    await tester.tap(find.text('Item 2'));
-    await tester.tap(removeButton);
-    await tester.pumpAndSettle();
-
-    // Append items 3, 4, 5, 6.
-    await tester.tap(insertButton);
-    await tester.tap(insertButton);
-    await tester.tap(insertButton);
-    await tester.tap(insertButton);
-    await tester.pumpAndSettle();
-
-    expect(find.text('Item 0'), findsNothing);
-    expect(find.text('Item 1'), findsNothing);
-    expect(find.text('Item 2'), findsNothing);
-    expect(find.text('Item 3'), findsOneWidget);
-    expect(find.text('Item 4'), findsOneWidget);
-    expect(find.text('Item 5'), findsOneWidget);
-    expect(find.text('Item 6'), findsOneWidget);
-
-    // Insert items 7, 8 at item 3's position (at the top)
-    await tester.tap(find.text('Item 3'));
-    await tester.tap(insertButton);
-    await tester.tap(insertButton);
-    await tester.pumpAndSettle();
-
-    expect(find.text('Item 7'), findsOneWidget);
-    expect(find.text('Item 8'), findsOneWidget);
-
-    // Scroll to the end.
-    await tester.fling(find.text('Item 7'), const Offset(0.0, -200.0), 1000.0);
-    await tester.pumpAndSettle();
-    expect(find.text('Item 6'), findsOneWidget);
-    expect(find.text('Item 8'), findsNothing);
-  });
-}

examples/catalog/test/app_bar_bottom_test.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'package:flutter/material.dart';
-import 'package:flutter_test/flutter_test.dart';
-import 'package:sample_catalog/app_bar_bottom.dart' as app_bar_bottom_sample;
-
-final int choiceCount = app_bar_bottom_sample.choices.length;
-IconData iconAt(int index) => app_bar_bottom_sample.choices[index].icon;
-
-Finder findChoiceCard(IconData icon) {
-  return find.descendant(of: find.byType(Card), matching: find.byIcon(icon));
-}
-
-void main() {
-  testWidgets('app_bar_bottom sample smoke test', (WidgetTester tester) async {
-    app_bar_bottom_sample.main();
-    await tester.pump();
-
-    // Cycle through the choices using the forward and backwards arrows.
-
-    final Finder nextChoice = find.byTooltip('Next choice');
-    for (int i = 0; i < choiceCount; i += 1) {
-      expect(findChoiceCard(iconAt(i)), findsOneWidget);
-      await tester.tap(nextChoice);
-      await tester.pumpAndSettle();
-    }
-
-    final Finder previousChoice = find.byTooltip('Previous choice');
-    for (int i = choiceCount - 1; i >= 0; i -= 1) {
-      expect(findChoiceCard(iconAt(i)), findsOneWidget);
-      await tester.tap(previousChoice);
-      await tester.pumpAndSettle();
-    }
-  });
-}

examples/catalog/test/basic_app_bar_test.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'package:flutter/material.dart';
-import 'package:flutter_test/flutter_test.dart';
-import 'package:sample_catalog/basic_app_bar.dart' as basic_app_bar_sample;
-
-int choiceCount = basic_app_bar_sample.choices.length;
-IconData iconAt(int index) => basic_app_bar_sample.choices[index].icon;
-String titleAt(int index) => basic_app_bar_sample.choices[index].title;
-
-Finder findAppBarIcon(IconData icon) {
-  return find.descendant(of: find.byType(AppBar), matching: find.byIcon(icon));
-}
-
-Finder findChoiceCard(IconData icon) {
-  return find.descendant(of: find.byType(Card), matching: find.byIcon(icon));
-}
-
-void main() {
-  testWidgets('basic_app_bar sample smoke test', (WidgetTester tester) async {
-    basic_app_bar_sample.main();
-    await tester.pump();
-
-    // Tap on the two action buttons and all of the overflow menu items.
-    // Verify that a Card with the expected icon appears.
-
-    await tester.tap(findAppBarIcon(iconAt(0)));
-    await tester.pumpAndSettle();
-    expect(findChoiceCard(iconAt(0)), findsOneWidget);
-
-    await tester.tap(findAppBarIcon(iconAt(1)));
-    await tester.pumpAndSettle();
-    expect(findChoiceCard(iconAt(1)), findsOneWidget);
-
-    for (int i = 2; i < choiceCount; i += 1) {
-      await tester.tap(findAppBarIcon(Icons.more_vert));
-      await tester.pumpAndSettle();
-      await tester.tap(find.text(titleAt(i)));
-      await tester.pumpAndSettle();
-      expect(findChoiceCard(iconAt(i)), findsOneWidget);
-    }
-  });
-}

examples/catalog/test/custom_semantics_test.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'package:flutter/rendering.dart';
-import 'package:flutter_test/flutter_test.dart';
-import 'package:sample_catalog/custom_semantics.dart' as custom_semantics show main;
-import 'package:sample_catalog/custom_semantics.dart';
-
-void main() {
-  testWidgets('custom_semantics sample smoke test', (WidgetTester tester) async {
-    // Turn on Semantics
-    final SemanticsHandle semanticsHandler = tester.binding.pipelineOwner.ensureSemantics();
-    final SemanticsOwner semanticsOwner = tester.binding.pipelineOwner.semanticsOwner;
-
-    // Build the sample app
-    custom_semantics.main();
-    await tester.pump();
-
-    // Verify it correctly exposes its semantics.
-    final SemanticsNode semantics = tester.getSemantics(find.byType(AdjustableDropdownListTile));
-
-    expectAdjustable(semantics,
-      hasIncreaseAction: true,
-      hasDecreaseAction: true,
-      label: 'Timeout',
-      decreasedValue: '5 seconds',
-      value: '15 seconds',
-      increasedValue: '30 seconds',
-    );
-
-    // Increase
-    semanticsOwner.performAction(semantics.id, SemanticsAction.increase);
-    await tester.pump();
-
-    expectAdjustable(semantics,
-      hasIncreaseAction: true,
-      hasDecreaseAction: true,
-      label: 'Timeout',
-      decreasedValue: '15 seconds',
-      value: '30 seconds',
-      increasedValue: '1 minute',
-    );
-
-    // Increase all the way to highest value
-    semanticsOwner.performAction(semantics.id, SemanticsAction.increase);
-    await tester.pump();
-
-    expectAdjustable(semantics,
-      hasIncreaseAction: false,
-      hasDecreaseAction: true,
-      label: 'Timeout',
-      decreasedValue: '30 seconds',
-      value: '1 minute',
-    );
-
-    // Decrease
-    semanticsOwner.performAction(semantics.id, SemanticsAction.decrease);
-    await tester.pump();
-
-    expectAdjustable(semantics,
-      hasIncreaseAction: true,
-      hasDecreaseAction: true,
-      label: 'Timeout',
-      decreasedValue: '15 seconds',
-      value: '30 seconds',
-      increasedValue: '1 minute',
-    );
-
-    // Decrease all the way to lowest value
-    semanticsOwner.performAction(semantics.id, SemanticsAction.decrease);
-    await tester.pump();
-    semanticsOwner.performAction(semantics.id, SemanticsAction.decrease);
-    await tester.pump();
-    semanticsOwner.performAction(semantics.id, SemanticsAction.decrease);
-    await tester.pump();
-
-    expectAdjustable(semantics,
-      hasIncreaseAction: true,
-      hasDecreaseAction: false,
-      label: 'Timeout',
-      value: '1 second',
-      increasedValue: '5 seconds',
-    );
-
-    // Clean-up
-    semanticsHandler.dispose();
-  });
-}
-
-void expectAdjustable(
-  SemanticsNode node, {
-  bool hasIncreaseAction = true,
-  bool hasDecreaseAction = true,
-  String label = '',
-  String decreasedValue = '',
-  String value = '',
-  String increasedValue = '',
-}) {
-  final SemanticsData semanticsData = node.getSemanticsData();
-
-  int actions = 0;
-  if (hasIncreaseAction)
-    actions |= SemanticsAction.increase.index;
-  if (hasDecreaseAction)
-    actions |= SemanticsAction.decrease.index;
-
-  expect(semanticsData.actions, actions);
-  expect(semanticsData.label, label);
-  expect(semanticsData.decreasedValue, decreasedValue);
-  expect(semanticsData.value, value);
-  expect(semanticsData.increasedValue, increasedValue);
-}

examples/catalog/test/expansion_tile_sample_test.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'package:flutter/material.dart';
-import 'package:flutter_test/flutter_test.dart';
-import 'package:sample_catalog/expansion_tile_sample.dart' as expansion_tile_sample;
-import 'package:sample_catalog/expansion_tile_sample.dart' show Entry;
-
-void main() {
-  testWidgets('expansion_tile sample smoke test', (WidgetTester tester) async {
-    expansion_tile_sample.main();
-    await tester.pump();
-
-    // Initially only the top level EntryItems (the "chapters") are present.
-    for (final Entry chapter in expansion_tile_sample.data) {
-      expect(find.text(chapter.title), findsOneWidget);
-      for (final Entry section in chapter.children) {
-        expect(find.text(section.title), findsNothing);
-        for (final Entry item in section.children)
-          expect(find.text(item.title), findsNothing);
-      }
-    }
-
-    Future<void> scrollUpOneEntry() async {
-      await tester.dragFrom(const Offset(200.0, 200.0), const Offset(0.0, -88.00));
-      await tester.pumpAndSettle();
-    }
-
-    Future<void> tapEntry(String title) async {
-      await tester.tap(find.text(title));
-      await tester.pumpAndSettle();
-    }
-
-    // Expand the chapters. Now the chapter and sections, but not the
-    // items, should be present.
-    for (final Entry chapter in expansion_tile_sample.data.reversed)
-      await tapEntry(chapter.title);
-
-    for (final Entry chapter in expansion_tile_sample.data) {
-      expect(find.text(chapter.title), findsOneWidget);
-      for (final Entry section in chapter.children) {
-        expect(find.text(section.title), findsOneWidget);
-        await scrollUpOneEntry();
-        for (final Entry item in section.children)
-          expect(find.text(item.title), findsNothing);
-      }
-      await scrollUpOneEntry();
-    }
-
-    // - scroll to the top -
-    await tester.flingFrom(const Offset(200.0, 200.0), const Offset(0.0, 100.0), 5000.0);
-    await tester.pumpAndSettle();
-
-    // Expand the sections. Now Widgets for all three levels should be present.
-    for (final Entry chapter in expansion_tile_sample.data) {
-      for (final Entry section in chapter.children) {
-        await tapEntry(section.title);
-        await scrollUpOneEntry();
-      }
-      await scrollUpOneEntry();
-    }
-
-    // We're scrolled to the bottom so the very last item is visible.
-    // Working in reverse order, so we don't need to do anymore scrolling,
-    // check that everything is visible and close the sections and
-    // chapters as we go up.
-    for (final Entry chapter in expansion_tile_sample.data.reversed) {
-      expect(find.text(chapter.title), findsOneWidget);
-      for (final Entry section in chapter.children.reversed) {
-        expect(find.text(section.title), findsOneWidget);
-        for (final Entry item in section.children.reversed)
-          expect(find.text(item.title), findsOneWidget);
-        await tapEntry(section.title); // close the section
-      }
-      await tapEntry(chapter.title); // close the chapter
-    }
-
-    // Finally only the top level EntryItems (the "chapters") are present.
-    for (final Entry chapter in expansion_tile_sample.data) {
-      expect(find.text(chapter.title), findsOneWidget);
-      for (final Entry section in chapter.children) {
-        expect(find.text(section.title), findsNothing);
-        for (final Entry item in section.children)
-          expect(find.text(item.title), findsNothing);
-      }
-    }
-
-  });
-}

examples/catalog/test/tabbed_app_bar_test.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'package:flutter/material.dart';
-import 'package:flutter_test/flutter_test.dart';
-import 'package:sample_catalog/tabbed_app_bar.dart' as tabbed_app_bar_sample;
-
-final int choiceCount = tabbed_app_bar_sample.choices.length;
-IconData iconAt(int index) => tabbed_app_bar_sample.choices[index].icon;
-
-Finder findChoiceCard(IconData icon) {
-  return find.descendant(of: find.byType(Card), matching: find.byIcon(icon));
-}
-
-Finder findTab(IconData icon) {
-  return find.descendant(of: find.byType(Tab), matching: find.byIcon(icon));
-}
-
-void main() {
-  testWidgets('tabbed_app_bar sample smoke test', (WidgetTester tester) async {
-    tabbed_app_bar_sample.main();
-    await tester.pump();
-
-    // Tap on each tab, verify that a Card with the expected icon appears.
-    for (int i = 0; i < choiceCount; i += 1) {
-      await tester.tap(findTab(iconAt(i)));
-      await tester.pumpAndSettle();
-      expect(findChoiceCard(iconAt(i)), findsOneWidget);
-      // Scroll the tabBar by about one tab width
-      await tester.drag(find.byType(TabBar), const Offset(-24.0, 0.0));
-      await tester.pumpAndSettle();
-    }
-  });
-}

examples/catalog/test_driver/README.md

-The screenshot.dart and screenshot_test.dart files were generated by ../bin/sample_page.dart. They should not be checked in.