[macOS] Add `platform_view` example. (#111005)

examples/platform_view/lib/main.dart

@@ -54,10 +54,11 @@ class _MyHomePageState extends State<MyHomePage> {
       case TargetPlatform.iOS:
         return const Text('Continue in iOS view');
       case TargetPlatform.windows:
-        return const Text('Cotninue in Windows view');
+        return const Text('Continue in Windows view');
+      case TargetPlatform.macOS:
+        return const Text('Continue in macOS view');
       case TargetPlatform.fuchsia:
       case TargetPlatform.linux:
-      case TargetPlatform.macOS:
         throw UnimplementedError('Platform not yet implemented');
     }
   }

examples/platform_view/macos/.gitignore

+# Flutter-related
+**/Flutter/ephemeral/
+**/Pods/
+
+# Xcode-related
+**/dgph
+**/xcuserdata/

examples/platform_view/macos/Flutter/Flutter-Debug.xcconfig

+#include "ephemeral/Flutter-Generated.xcconfig"

examples/platform_view/macos/Flutter/Flutter-Release.xcconfig

+#include "ephemeral/Flutter-Generated.xcconfig"

examples/platform_view/macos/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/platform_view/macos/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1300"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "33CC10EC2044A3C60003C045"
+               BuildableName = "platform_view.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">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "33CC10EC2044A3C60003C045"
+            BuildableName = "platform_view.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <Testables>
+      </Testables>
+   </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 = "33CC10EC2044A3C60003C045"
+            BuildableName = "platform_view.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Profile"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "33CC10EC2044A3C60003C045"
+            BuildableName = "platform_view.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

examples/platform_view/macos/Runner.xcworkspace/contents.xcworkspacedata

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

examples/platform_view/macos/Runner.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/platform_view/macos/Runner/AppDelegate.swift

+// 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 Cocoa
+import FlutterMacOS
+
+@NSApplicationMain
+class AppDelegate: FlutterAppDelegate {
+  override func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
+    return true
+  }
+}

examples/platform_view/macos/Runner/Configs/AppInfo.xcconfig

+// Application-level settings for the Runner target.
+//
+// This may be replaced with something auto-generated from metadata (e.g., pubspec.yaml) in the
+// future. If not, the values below would default to using the project name when this becomes a
+// 'flutter create' template.
+
+// The application's name. By default this is also the title of the Flutter window.
+PRODUCT_NAME = platform_view
+
+// The application's bundle identifier
+PRODUCT_BUNDLE_IDENTIFIER = io.flutter.examples.platformView
+
+// The copyright displayed in application information
+PRODUCT_COPYRIGHT = Copyright © 2022 io.flutter.examples. All rights reserved.

examples/platform_view/macos/Runner/Configs/Debug.xcconfig

+#include "../../Flutter/Flutter-Debug.xcconfig"
+#include "Warnings.xcconfig"

examples/platform_view/macos/Runner/Configs/Release.xcconfig

+#include "../../Flutter/Flutter-Release.xcconfig"
+#include "Warnings.xcconfig"

examples/platform_view/macos/Runner/Configs/Warnings.xcconfig

+WARNING_CFLAGS = -Wall -Wconditional-uninitialized -Wnullable-to-nonnull-conversion -Wmissing-method-return-type -Woverlength-strings
+GCC_WARN_UNDECLARED_SELECTOR = YES
+CLANG_UNDEFINED_BEHAVIOR_SANITIZER_NULLABILITY = YES
+CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE
+CLANG_WARN__DUPLICATE_METHOD_MATCH = YES
+CLANG_WARN_PRAGMA_PACK = YES
+CLANG_WARN_STRICT_PROTOTYPES = YES
+CLANG_WARN_COMMA = YES
+GCC_WARN_STRICT_SELECTOR_MATCH = YES
+CLANG_WARN_OBJC_REPEATED_USE_OF_WEAK = YES
+CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES
+GCC_WARN_SHADOW = YES
+CLANG_WARN_UNREACHABLE_CODE = YES

examples/platform_view/macos/Runner/DebugProfile.entitlements

+<?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>com.apple.security.app-sandbox</key>
+	<true/>
+	<key>com.apple.security.cs.allow-jit</key>
+	<true/>
+	<key>com.apple.security.network.server</key>
+	<true/>
+</dict>
+</plist>

examples/platform_view/macos/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>CFBundleIconFile</key>
+	<string></string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(FLUTTER_BUILD_NAME)</string>
+	<key>CFBundleVersion</key>
+	<string>$(FLUTTER_BUILD_NUMBER)</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>$(PRODUCT_COPYRIGHT)</string>
+	<key>NSMainNibFile</key>
+	<string>MainMenu</string>
+	<key>NSPrincipalClass</key>
+	<string>NSApplication</string>
+</dict>
+</plist>

examples/platform_view/macos/Runner/MainFlutterWindow.swift

+// 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 Cocoa
+import FlutterMacOS
+
+class MainFlutterWindow: NSWindow {
+  override func awakeFromNib() {
+    let flutterViewController = FlutterViewController.init()
+    let windowFrame = self.frame
+    self.contentViewController = flutterViewController
+    self.setFrame(windowFrame, display: true)
+
+    RegisterGeneratedPlugins(registry: flutterViewController)
+    RegisterMethodChannel(registry: flutterViewController)
+
+    super.awakeFromNib()
+  }
+
+  func RegisterMethodChannel(registry: FlutterPluginRegistry) {
+    let registrar = registry.registrar(forPlugin: "platform_view")
+    let channel = FlutterMethodChannel(name: "samples.flutter.io/platform_view",
+                                       binaryMessenger: registrar.messenger)
+    channel.setMethodCallHandler({ (call, result) in
+      if (call.method == "switchView") {
+        let count = call.arguments as! Int
+        let controller: NSViewController = PlatformViewController(
+          withCount: count,
+          onClose: { platformViewController in
+            result(platformViewController.count)
+          }
+        )
+        self.contentViewController?.presentAsSheet(controller)
+      }
+    })
+  }
+}

examples/platform_view/macos/Runner/PlatformViewController.swift

+// 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 Cocoa
+
+class PlatformViewController: NSViewController {
+    var count: Int = 0
+
+    var dispose: ((PlatformViewController)->())?
+
+    @IBOutlet weak var label: NSTextField!
+
+    var labelText: String {
+      get {
+        return "Button tapped \(self.count) time\(self.count != 1 ? "s" : "")."
+      }
+    }
+
+    override func viewDidLoad() {
+      super.viewDidLoad()
+      self.label.stringValue = labelText
+    }
+
+    public required init?(coder aDecoder: NSCoder) {
+      self.count = 0
+      self.dispose = nil
+      super.init(coder: aDecoder)
+    }
+
+    init(withCount count: Int, onClose dispose: ((PlatformViewController)->())?) {
+      self.count = count
+      self.dispose = dispose
+      super.init(nibName: nil, bundle: nil)
+    }
+
+    @IBAction func pop(_ sender: Any) {
+      self.dispose?(self)
+      dismiss(self)
+    }
+
+    @IBAction func increment(_ sender: Any) {
+      self.count += 1
+      self.label.stringValue = labelText
+    }
+}

examples/platform_view/macos/Runner/PlatformViewController.xib

+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="21208.1" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES" customObjectInstantitationMethod="direct">
+    <dependencies>
+        <deployment identifier="macosx"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="21208.1"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <objects>
+        <customObject id="-2" userLabel="File's Owner" customClass="PlatformViewController" customModule="platform_view" customModuleProvider="target">
+            <connections>
+                <outlet property="label" destination="Eug-C1-PRv" id="wbw-1a-uP2"/>
+                <outlet property="view" destination="Hz6-mo-xeY" id="0bl-1N-x8E"/>
+            </connections>
+        </customObject>
+        <customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
+        <customObject id="-3" userLabel="Application" customClass="NSObject"/>
+        <customView wantsLayer="YES" id="Hz6-mo-xeY" userLabel="Platform View">
+            <rect key="frame" x="0.0" y="0.0" width="587" height="356"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+            <subviews>
+                <stackView distribution="fill" orientation="vertical" alignment="leading" spacing="0.0" horizontalStackHuggingPriority="249.99998474121094" verticalStackHuggingPriority="249.99998474121094" detachesHiddenViews="YES" translatesAutoresizingMaskIntoConstraints="NO" id="asX-Cr-4ZL">
+                    <rect key="frame" x="0.0" y="0.0" width="587" height="356"/>
+                    <subviews>
+                        <customView translatesAutoresizingMaskIntoConstraints="NO" id="LRL-SV-BW7" userLabel="Top">
+                            <rect key="frame" x="0.0" y="70" width="587" height="286"/>
+                            <subviews>
+                                <textField horizontalHuggingPriority="251" verticalHuggingPriority="750" translatesAutoresizingMaskIntoConstraints="NO" id="Eug-C1-PRv">
+                                    <rect key="frame" x="193" y="133" width="202" height="21"/>
+                                    <textFieldCell key="cell" lineBreakMode="clipping" title="Button tapped X time(s)." id="e4z-H9-rSi">
+                                        <font key="font" metaFont="system" size="18"/>
+                                        <color key="textColor" name="labelColor" catalog="System" colorSpace="catalog"/>
+                                        <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
+                                    </textFieldCell>
+                                </textField>
+                                <button verticalHuggingPriority="750" translatesAutoresizingMaskIntoConstraints="NO" id="Jn3-XC-Bej">
+                                    <rect key="frame" x="204" y="90" width="179" height="32"/>
+                                    <buttonCell key="cell" type="push" title="Continue in Flutter View" bezelStyle="rounded" alignment="center" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="1Sq-bc-nHD">
+                                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                                        <font key="font" metaFont="system"/>
+                                    </buttonCell>
+                                    <connections>
+                                        <action selector="pop:" target="-2" id="KiK-HY-d8D"/>
+                                    </connections>
+                                </button>
+                            </subviews>
+                            <constraints>
+                                <constraint firstItem="Jn3-XC-Bej" firstAttribute="centerX" secondItem="Eug-C1-PRv" secondAttribute="centerX" id="0Wb-kD-KeP"/>
+                                <constraint firstItem="Jn3-XC-Bej" firstAttribute="top" secondItem="Eug-C1-PRv" secondAttribute="bottom" constant="16" id="55w-Yj-iSV"/>
+                                <constraint firstItem="Eug-C1-PRv" firstAttribute="centerX" secondItem="LRL-SV-BW7" secondAttribute="centerX" id="E6g-Q5-V9j"/>
+                                <constraint firstItem="Eug-C1-PRv" firstAttribute="centerY" secondItem="LRL-SV-BW7" secondAttribute="centerY" id="FPs-Lq-4vX"/>
+                            </constraints>
+                        </customView>
+                        <customView translatesAutoresizingMaskIntoConstraints="NO" id="ocC-s8-csF" userLabel="Bottom">
+                            <rect key="frame" x="0.0" y="0.0" width="587" height="70"/>
+                            <subviews>
+                                <textField horizontalHuggingPriority="251" verticalHuggingPriority="750" translatesAutoresizingMaskIntoConstraints="NO" id="ibp-9J-zlZ">
+                                    <rect key="frame" x="18" y="12" width="100" height="35"/>
+                                    <textFieldCell key="cell" lineBreakMode="clipping" title="macOS" id="gQ0-QK-wuE">
+                                        <font key="font" metaFont="system" size="30"/>
+                                        <color key="textColor" name="labelColor" catalog="System" colorSpace="catalog"/>
+                                        <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
+                                    </textFieldCell>
+                                </textField>
+                                <button verticalHuggingPriority="750" misplaced="YES" translatesAutoresizingMaskIntoConstraints="NO" id="p1C-yr-atP">
+                                    <rect key="frame" x="540" y="13" width="34" height="32"/>
+                                    <buttonCell key="cell" type="push" title="+" bezelStyle="rounded" alignment="center" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="Zhj-im-lGH">
+                                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                                        <font key="font" metaFont="system"/>
+                                    </buttonCell>
+                                    <connections>
+                                        <action selector="increment:" target="-2" id="t7P-hc-bBq"/>
+                                    </connections>
+                                </button>
+                            </subviews>
+                            <constraints>
+                                <constraint firstAttribute="bottom" secondItem="p1C-yr-atP" secondAttribute="bottom" constant="20" symbolic="YES" id="O6I-0q-C2q"/>
+                                <constraint firstItem="ibp-9J-zlZ" firstAttribute="leading" secondItem="ocC-s8-csF" secondAttribute="leading" constant="20" symbolic="YES" id="RaJ-kB-iMn"/>
+                                <constraint firstAttribute="bottom" secondItem="ibp-9J-zlZ" secondAttribute="bottom" constant="12" id="bHW-eU-Qry"/>
+                                <constraint firstAttribute="height" constant="70" id="ipW-qa-zLH"/>
+                                <constraint firstAttribute="trailing" secondItem="p1C-yr-atP" secondAttribute="trailing" constant="20" symbolic="YES" id="rQt-7N-1IH"/>
+                            </constraints>
+                        </customView>
+                    </subviews>
+                    <visibilityPriorities>
+                        <integer value="1000"/>
+                        <integer value="1000"/>
+                    </visibilityPriorities>
+                    <customSpacing>
+                        <real value="3.4028234663852886e+38"/>
+                        <real value="3.4028234663852886e+38"/>
+                    </customSpacing>
+                </stackView>
+            </subviews>
+            <constraints>
+                <constraint firstAttribute="trailing" secondItem="asX-Cr-4ZL" secondAttribute="trailing" id="2mi-qA-Xg7"/>
+                <constraint firstAttribute="bottom" secondItem="asX-Cr-4ZL" secondAttribute="bottom" id="4yQ-Dc-p85"/>
+                <constraint firstItem="asX-Cr-4ZL" firstAttribute="top" secondItem="Hz6-mo-xeY" secondAttribute="top" id="QUl-ar-P9E"/>
+                <constraint firstItem="asX-Cr-4ZL" firstAttribute="leading" secondItem="Hz6-mo-xeY" secondAttribute="leading" id="o34-Uf-9SV"/>
+            </constraints>
+            <point key="canvasLocation" x="138.5" y="96"/>
+        </customView>
+    </objects>
+</document>

examples/platform_view/macos/Runner/Release.entitlements

+<?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>com.apple.security.app-sandbox</key>
+	<true/>
+</dict>
+</plist>