Add Windows to the platform_channels example (#106754)

.ci.yaml

@@ -3981,6 +3981,21 @@ targets:
       - bin/**
       - .ci.yaml
 
+  - name: Windows platform_channel_sample_test_windows
+    recipe: devicelab/devicelab_drone
+    presubmit: false
+    timeout: 60
+    properties:
+      dependencies: >-
+        [
+          {"dependency": "vs_build", "version": "version:vs2019"}
+        ]
+      tags: >
+        ["devicelab", "hostonly"]
+      task_name: platform_channel_sample_test_windows
+    scheduler: luci
+    bringup: true
+
   - name: Windows plugin_dependencies_test
     recipe: devicelab/devicelab_drone
     timeout: 60

TESTOWNERS

@@ -199,6 +199,7 @@
 /dev/devicelab/bin/tasks/module_test.dart @zanderso @flutter/tool
 /dev/devicelab/bin/tasks/native_platform_view_ui_tests_ios.dart @hellohuanlin @flutter/ios
 /dev/devicelab/bin/tasks/native_ui_tests_macos.dart @cbracken @flutter/desktop
+/dev/devicelab/bin/tasks/platform_channel_sample_test_windows.dart @cbracken @flutter/desktop
 /dev/devicelab/bin/tasks/plugin_test.dart @stuartmorgan @flutter/plugin
 /dev/devicelab/bin/tasks/plugin_test_ios.dart @jmagman @flutter/ios
 /dev/devicelab/bin/tasks/technical_debt__cost.dart @HansMuller @flutter/framework

dev/bots/analyze.dart

@@ -544,6 +544,7 @@ Future<void> verifyNoMissingLicense(String workingDirectory, { bool checkMinimum
   failed += await _verifyNoMissingLicenseForExtension(workingDirectory, 'java', overrideMinimumMatches ?? 39, _generateLicense('// '));
   failed += await _verifyNoMissingLicenseForExtension(workingDirectory, 'h', overrideMinimumMatches ?? 30, _generateLicense('// '));
   failed += await _verifyNoMissingLicenseForExtension(workingDirectory, 'm', overrideMinimumMatches ?? 30, _generateLicense('// '));
+  failed += await _verifyNoMissingLicenseForExtension(workingDirectory, 'cpp', overrideMinimumMatches ?? 0, _generateLicense('// '));
   failed += await _verifyNoMissingLicenseForExtension(workingDirectory, 'swift', overrideMinimumMatches ?? 10, _generateLicense('// '));
   failed += await _verifyNoMissingLicenseForExtension(workingDirectory, 'gradle', overrideMinimumMatches ?? 80, _generateLicense('// '));
   failed += await _verifyNoMissingLicenseForExtension(workingDirectory, 'gn', overrideMinimumMatches ?? 0, _generateLicense('# '));

dev/devicelab/bin/tasks/platform_channel_sample_test_windows.dart

@@ -0,0 +1,10 @@
+// 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_devicelab/framework/framework.dart';
+import 'package:flutter_devicelab/tasks/integration_tests.dart';
+
+Future<void> main() async {
+  await task(createPlatformChannelSampleTest(deviceIdOverride: 'windows'));
+}

dev/devicelab/lib/tasks/integration_tests.dart

@@ -44,10 +44,11 @@ TaskFunction createExternalUiIntegrationTest() {
   );
 }
 
-TaskFunction createPlatformChannelSampleTest() {
+TaskFunction createPlatformChannelSampleTest({String? deviceIdOverride}) {
   return DriverTest(
     '${flutterDirectory.path}/examples/platform_channel',
     'test_driver/button_tap.dart',
+    deviceIdOverride: deviceIdOverride,
   );
 }
 
@@ -146,18 +147,25 @@ class DriverTest {
     this.testDirectory,
     this.testTarget, {
       this.extraOptions = const <String>[],
+      this.deviceIdOverride,
     }
   );
 
   final String testDirectory;
   final String testTarget;
   final List<String> extraOptions;
+  final String? deviceIdOverride;
 
   Future<TaskResult> call() {
     return inDirectory<TaskResult>(testDirectory, () async {
-      final Device device = await devices.workingDevice;
-      await device.unlock();
-      final String deviceId = device.deviceId;
+      String deviceId;
+      if (deviceIdOverride != null) {
+        deviceId = deviceIdOverride!;
+      } else {
+        final Device device = await devices.workingDevice;
+        await device.unlock();
+        deviceId = device.deviceId;
+      }
       await flutter('packages', options: <String>['get']);
 
       final List<String> options = <String>[

dev/integration_tests/flutter_gallery/windows/runner/flutter_window.cpp

@@ -1,3 +1,7 @@
+// 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 "flutter_window.h"
 
 #include <optional>

dev/integration_tests/flutter_gallery/windows/runner/main.cpp

@@ -1,3 +1,7 @@
+// 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 <flutter/dart_project.h>
 #include <flutter/flutter_view_controller.h>
 #include <windows.h>

dev/integration_tests/flutter_gallery/windows/runner/utils.cpp

@@ -1,3 +1,7 @@
+// 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 "utils.h"
 
 #include <flutter_windows.h>

dev/integration_tests/flutter_gallery/windows/runner/win32_window.cpp

@@ -1,3 +1,7 @@
+// 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 "win32_window.h"
 
 #include <flutter_windows.h>

dev/manual_tests/windows/runner/utils.cpp

@@ -1,3 +1,7 @@
+// 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 "utils.h"
 
 #include <flutter_windows.h>

dev/manual_tests/windows/runner/win32_window.cpp

@@ -1,3 +1,7 @@
+// 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 "win32_window.h"
 
 #include <flutter_windows.h>

examples/api/windows/runner/flutter_window.cpp

@@ -1,3 +1,7 @@
+// 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 "flutter_window.h"
 
 #include <optional>

examples/api/windows/runner/main.cpp

@@ -1,3 +1,7 @@
+// 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 <flutter/dart_project.h>
 #include <flutter/flutter_view_controller.h>
 #include <windows.h>

examples/api/windows/runner/utils.cpp

@@ -1,3 +1,7 @@
+// 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 "utils.h"
 
 #include <flutter_windows.h>

examples/api/windows/runner/win32_window.cpp

@@ -1,3 +1,7 @@
+// 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 "win32_window.h"
 
 #include <flutter_windows.h>

examples/platform_channel/README.md

@@ -15,3 +15,8 @@ and build/run the project as usual.
 You can use the commands `flutter build` and `flutter run` from the app's root
 directory to build/run the app or to build with Android Studio, open the
 `android` folder in Android Studio and build the project as usual.
+
+## Windows
+You can use the commands `flutter build` and `flutter run` from the app's root
+directory to build/run the app or you can build once then open
+`build\windows\platform_channel.sln` in Visual Studio to build and run.

examples/platform_channel/windows/.clang-format

@@ -0,0 +1,5 @@
+BasedOnStyle: Google
+---
+Language: Cpp
+DerivePointerAlignment: false
+PointerAlignment: Left

examples/platform_channel/windows/.gitignore

@@ -0,0 +1,17 @@
+flutter/ephemeral/
+
+# Visual Studio user-specific files.
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# Visual Studio build-related files.
+x64/
+x86/
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!*.[Cc]ache/

examples/platform_channel/windows/CMakeLists.txt

@@ -0,0 +1,101 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.14)
+project(platform_channel LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "platform_channel")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Define build configuration option.
+get_property(IS_MULTICONFIG GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
+if(IS_MULTICONFIG)
+  set(CMAKE_CONFIGURATION_TYPES "Debug;Profile;Release"
+    CACHE STRING "" FORCE)
+else()
+  if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+    set(CMAKE_BUILD_TYPE "Debug" CACHE
+      STRING "Flutter build mode" FORCE)
+    set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+      "Debug" "Profile" "Release")
+  endif()
+endif()
+# Define settings for the Profile build mode.
+set(CMAKE_EXE_LINKER_FLAGS_PROFILE "${CMAKE_EXE_LINKER_FLAGS_RELEASE}")
+set(CMAKE_SHARED_LINKER_FLAGS_PROFILE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE}")
+set(CMAKE_C_FLAGS_PROFILE "${CMAKE_C_FLAGS_RELEASE}")
+set(CMAKE_CXX_FLAGS_PROFILE "${CMAKE_CXX_FLAGS_RELEASE}")
+
+# Use Unicode for all projects.
+add_definitions(-DUNICODE -D_UNICODE)
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_17)
+  target_compile_options(${TARGET} PRIVATE /W4 /WX /wd"4100")
+  target_compile_options(${TARGET} PRIVATE /EHsc)
+  target_compile_definitions(${TARGET} PRIVATE "_HAS_EXCEPTIONS=0")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<CONFIG:Debug>:_DEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# Support files are copied into place next to the executable, so that it can
+# run in place. This is done instead of making a separate bundle (as on Linux)
+# so that building and running from within Visual Studio will work.
+set(BUILD_BUNDLE_DIR "$<TARGET_FILE_DIR:${BINARY_NAME}>")
+# Make the "install" step default, as it's required to run.
+set(CMAKE_VS_INCLUDE_INSTALL_TO_DEFAULT_BUILD 1)
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+if(PLUGIN_BUNDLED_LIBRARIES)
+  install(FILES "${PLUGIN_BUNDLED_LIBRARIES}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  CONFIGURATIONS Profile;Release
+  COMPONENT Runtime)