wip: add provider generator.

app/README.md

@@ -1,16 +1,47 @@
-# dde_gesture_manager
+# DDE Gesture Manager
+专为 DDE 桌面环境打造的触摸板手势管理工具
 
-A new Flutter project.
+## ProviderGenerator
+利用 [source_gen](https://pub.dev/packages/source_gen) 和 [build_runner](https://pub.flutter-io.cn/packages/build_runner) 生成 [provider](https://pub.flutter-io.cn/packages/provider) 的模板代码：
+1. 在 `lib/models/` 下编写模型类
+```dart
+import 'package:dde_gesture_manager/builder/provider_annotation.dart';
 
-## Getting Started
+@ProviderModel()
+class Test {
+  @ProviderModelProp()
+  bool? tested;
 
-This project is a starting point for a Flutter application.
+  @ProviderModelProp()
+  String? name;
+}
 
-A few resources to get you started if this is your first Flutter project:
+```
 
-- [Lab: Write your first Flutter app](https://flutter.dev/docs/get-started/codelab)
+2. `app` 项目目录下执行 `flutter packages pub run build_runner build`
-- [Cookbook: Useful Flutter samples](https://flutter.dev/docs/cookbook)
 
-For help getting started with Flutter, view our
+3. 将在 `lib/models/test.provider.dart` 生成如下代码:
-[online documentation](https://flutter.dev/docs), which offers tutorials,
+```dart
-samples, guidance on mobile development, and a full API reference.
+import 'package:flutter/foundation.dart';
+import 'package:dde_gesture_manager/extensions/compare_extension.dart';
+import 'test.dart';
+
+class TestProvider extends Test with ChangeNotifier {
+  void setProps({
+    bool? tested,
+    String? name,
+  }) {
+    bool changed = false;
+    if (tested.diff(this.tested)) {
+      this.tested = tested;
+      changed = true;
+    }
+    if (name.diff(this.name)) {
+      this.name = name;
+      changed = true;
+    }
+    if (changed) notifyListeners();
+  }
+}
+
+```

app/build.yaml

@@ -0,0 +1,11 @@
+builders:
+  provider_builder:
+    import: 'lib/builder/provider_builder.dart'
+    builder_factories: [ 'providerBuilder' ]
+    build_extensions: { '.dart': [ '.provider.dart' ] }
+    auto_apply: root_package
+    build_to: source
+    defaults:
+      generate_for:
+        include:
+          - lib/models/**

app/lib/builder/provider_annotation.dart

@@ -0,0 +1,9 @@
+class ProviderModel {
+  const ProviderModel();
+}
+
+class ProviderModelProp {
+  const ProviderModelProp({this.nullable = true});
+
+  final bool nullable;
+}

app/lib/builder/provider_builder.dart

@@ -0,0 +1,6 @@
+import 'package:dde_gesture_manager/builder/provider_generator.dart';
+import 'package:source_gen/source_gen.dart';
+import 'package:build/build.dart';
+
+Builder providerBuilder(BuilderOptions options) =>
+    LibraryBuilder(ProviderGenerator(), generatedExtension: '.provider.dart');

app/lib/builder/provider_generator.dart

@@ -0,0 +1,48 @@
+import 'package:analyzer/dart/element/element.dart';
+import 'package:build/src/builder/build_step.dart';
+import 'package:dde_gesture_manager/builder/provider_annotation.dart';
+import 'package:source_gen/source_gen.dart';
+import 'package:collection/collection.dart';
+
+class AnnotationField {
+  String name;
+  String type;
+
+  AnnotationField(this.name, this.type);
+}
+
+class ProviderGenerator extends GeneratorForAnnotation<ProviderModel> {
+  @override
+  generateForAnnotatedElement(Element element, ConstantReader annotation, BuildStep buildStep) {
+    var className = (element as ClassElement).source.shortName;
+    List<AnnotationField> fields = [];
+    element.fields.forEach((field) {
+      var annotation = field.metadata.firstWhereOrNull(
+          (m) => m.computeConstantValue()?.type?.getDisplayString(withNullability: true) == 'ProviderModelProp');
+      if (annotation != null)
+        fields.add(
+          AnnotationField(
+            field.displayName,
+            field.type.getDisplayString(
+              withNullability: annotation.computeConstantValue()?.getField('nullable')?.toBoolValue() ?? true,
+            ),
+          ),
+        );
+    });
+    return '''
+import 'package:flutter/foundation.dart';
+import 'package:dde_gesture_manager/extensions/compare_extension.dart';
+import '$className';
+
+class ${element.displayName}Provider extends ${element.displayName} with ChangeNotifier {
+  void setProps({
+    ${fields.map((f) => '${f.type.endsWith('?') ? '' : 'required '}${f.type} ${f.name},').join('\n')}
+  }) {
+    bool changed = false;    
+    ${fields.map((f) => 'if (${f.name}.diff(this.${f.name})) {this.${f.name} = ${f.name}; changed = true; }').join('\n')}
+    if (changed) notifyListeners();
+  }
+}
+    ''';
+  }
+}

app/lib/extensions/compare_extension.dart

@@ -0,0 +1,3 @@
+extension CompareExtension on Object? {
+  bool diff(other) => this != null && this != other;
+}

app/lib/extensions/sout_extension.dart

@@ -0,0 +1,12 @@
+extension SoutExtension on Object? {
+  void sout() {
+    switch (this.runtimeType) {
+      case String:
+        return print(this);
+      case Null:
+        return print(null);
+      default:
+        return print(this.toString());
+    }
+  }
+}

app/lib/main.dart

@@ -1,29 +1,13 @@
-import 'package:dde_gesture_manager/models/settings.dart';
+import 'package:dde_gesture_manager/models/settings.provider.dart';
+import 'package:dde_gesture_manager/utils/init.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/widgets.dart';
-import 'package:gsettings/gsettings.dart';
 import 'package:provider/provider.dart';
-import 'package:window_manager/window_manager.dart';
-import 'package:xdg_directories/xdg_directories.dart' as xdgDir;
 
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
-  if (!kIsWeb) {
+  await initConfigs();
-    print(await xdgDir.configHome);
-    print(await xdgDir.cacheHome);
-    print(await xdgDir.dataHome);
-    print('------');
-    print(await xdgDir.configDirs.join('\n'));
-    print('------');
-    print(await xdgDir.dataDirs.join('\n'));
-    print('------');
-    print(await xdgDir.runtimeDir);
-    print('------');
-    var windowManager = WindowManager.instance;
-    windowManager.setTitle('Gesture Manager For DDE');
-    windowManager.setMinimumSize(const Size(800, 600));
-  }
   runApp(MyApp());
 }
 
@@ -36,41 +20,32 @@ class MyApp extends StatelessWidget {
       ],
       builder: (context, child) {
         var isDarkMode = context.watch<SettingsProvider>().isDarkMode;
-        return AnimatedCrossFade(
+        return MaterialApp(
-          crossFadeState: isDarkMode != null ? CrossFadeState.showFirst : CrossFadeState.showSecond,
+          title: 'Flutter Demo',
-          alignment: Alignment.center,
+          theme: ThemeData(
-          layoutBuilder: (topChild, topChildKey, bottomChild, bottomChildKey) => Stack(
+            primarySwatch: isDarkMode == true ? Colors.blue : Colors.blue,
-            clipBehavior: Clip.none,
+            brightness: isDarkMode == true ? Brightness.dark : Brightness.light,
+          ),
+          home: AnimatedCrossFade(
+            crossFadeState: isDarkMode != null ? CrossFadeState.showFirst : CrossFadeState.showSecond,
             alignment: Alignment.center,
-            children: <Widget>[
+            layoutBuilder: (topChild, topChildKey, bottomChild, bottomChildKey) => Stack(
-              Positioned(key: bottomChildKey, child: bottomChild),
+              clipBehavior: Clip.none,
-              Positioned(key: topChildKey, child: topChild),
+              alignment: Alignment.center,
-            ],
+              children: <Widget>[
-          ),
+                Positioned(key: bottomChildKey, child: bottomChild),
-          firstChild: MaterialApp(
+                Positioned(key: topChildKey, child: topChild),
-            title: 'Flutter Demo',
+              ],
-            theme: ThemeData(
-              primarySwatch: isDarkMode == true ? Colors.blue : Colors.blue,
-              brightness: isDarkMode == true ? Brightness.dark : Brightness.light,
             ),
-            home: MyHomePage(title: 'Flutter Demo Home Page'),
+            firstChild: MyHomePage(title: 'Flutter Demo Home Page'),
-          ),
+            secondChild: Builder(builder: (context) {
-          secondChild: Builder(builder: (_) {
+              initEvents(context);
-            var xsettings = GSettings('com.deepin.xsettings');
+              return Center(
-            xsettings.get('theme-name').then((value) {
+                child: CircularProgressIndicator(),
-              Future.delayed(
-                Duration(seconds: 1),
-                () => context.read<SettingsProvider>().setProps(isDarkMode: value.toString().contains('dark')),
               );
-            });
+            }),
-            xsettings.keysChanged.listen((event) {
+            duration: Duration(seconds: 1),
-              xsettings.get('theme-name').then((value) {
+          ),
-                context.read<SettingsProvider>().setProps(isDarkMode: value.toString().contains('dark'));
-              });
-            });
-            return CircularProgressIndicator();
-          }),
-          duration: Duration(seconds: 1),
         );
       },
     );

app/lib/models/settings.dart

@@ -1,20 +1,10 @@
-import 'package:flutter/foundation.dart';
+import 'package:dde_gesture_manager/builder/provider_annotation.dart';
 
+@ProviderModel()
 class Settings {
-  bool? _isDarkMode;
+  @ProviderModelProp()
+  bool? isDarkMode;
 
-  bool? get isDarkMode => _isDarkMode;
+  @ProviderModelProp()
-}
+  String? name;
-
-class SettingsProvider extends Settings with ChangeNotifier {
-  void setProps({
-    bool? isDarkMode,
-  }) {
-    bool changed = false;
-    if (this._isDarkMode != isDarkMode) {
-      this._isDarkMode = isDarkMode;
-      changed = true;
-    }
-    if (changed) notifyListeners();
-  }
 }

app/lib/utils/helper.dart

@@ -1,2 +1,17 @@
+import 'package:shared_preferences/shared_preferences.dart';
+
 class H {
-}
+  H._();
+
+  static final _h = H._();
+
+  factory H() => _h;
+
+  late SharedPreferences _sp;
+
+  SharedPreferences get sp => _sp;
+
+  initSharedPreference() async {
+    _sp = await SharedPreferences.getInstance();
+  }
+}

app/lib/utils/init.dart

@@ -0,0 +1 @@
+export 'init_web.dart' if (dart.library.io) 'init_linux.dart';

app/lib/utils/init_linux.dart

@@ -0,0 +1,34 @@
+import 'package:dde_gesture_manager/utils/helper.dart';
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:gsettings/gsettings.dart';
+import 'package:provider/provider.dart';
+import 'package:window_manager/window_manager.dart';
+import 'package:dde_gesture_manager/models/settings.provider.dart';
+
+Future<void> initEvents(BuildContext context) async {
+  var isDark = MediaQuery.of(context).platformBrightness == Brightness.dark;
+  if (isDark) {
+    context.read<SettingsProvider>().setProps(isDarkMode: isDark);
+  } else {
+    var xsettings = GSettings('com.deepin.xsettings');
+    xsettings.get('theme-name').then((value) {
+      Future.delayed(
+        Duration(seconds: 1),
+        () => context.read<SettingsProvider>().setProps(isDarkMode: value.toString().contains('dark')),
+      );
+    });
+    xsettings.keysChanged.listen((event) {
+      xsettings.get('theme-name').then((value) {
+        context.read<SettingsProvider>().setProps(isDarkMode: value.toString().contains('dark'));
+      });
+    });
+  }
+}
+
+Future<void> initConfigs() async {
+  await H().initSharedPreference();
+  var windowManager = WindowManager.instance;
+  windowManager.setTitle('Gesture Manager For DDE');
+  windowManager.setMinimumSize(const Size(800, 600));
+}

app/lib/utils/init_web.dart

@@ -0,0 +1,13 @@
+import 'package:dde_gesture_manager/models/settings.provider.dart';
+import 'package:dde_gesture_manager/utils/helper.dart';
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+
+Future<void> initEvents(BuildContext context) async {
+  var isDark = MediaQuery.of(context).platformBrightness == Brightness.dark;
+  context.read<SettingsProvider>().setProps(isDarkMode: isDark);
+}
+
+Future<void> initConfigs() async {
+  await H().initSharedPreference();
+}

app/pubspec.yaml

@@ -38,6 +38,8 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
+  build_runner: 2.1.2
+  source_gen: 1.1.0
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec