feat: scheme apply feature.

app/lib/utils/apply_scheme_interface.dart

@@ -0,0 +1,7 @@
+import 'package:dde_gesture_manager/models/scheme.dart';
+import 'package:flutter/material.dart';
+export 'apply_scheme_web.dart' if (dart.library.io) 'apply_scheme_linux.dart';
+
+abstract class SchemeApplyUtilStub {
+  void apply(BuildContext context, Scheme scheme);
+}

app/lib/utils/apply_scheme_linux.dart

@@ -0,0 +1,40 @@
+import 'dart:io';
+
+import 'package:dde_gesture_manager/constants/constants.dart';
+import 'package:dde_gesture_manager/extensions.dart';
+import 'package:dde_gesture_manager/models/scheme.dart';
+import 'package:dde_gesture_manager/utils/helper.dart';
+import 'package:dde_gesture_manager/utils/notificator.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_platform_alert/flutter_platform_alert.dart';
+import 'package:uuid/uuid.dart';
+import 'apply_scheme_interface.dart';
+import 'package:xdg_directories/xdg_directories.dart' as xdg;
+import 'package:path/path.dart' show join;
+
+class SchemeApplyUtil implements SchemeApplyUtilStub {
+  void apply(BuildContext context, Scheme scheme) {
+    var configFilePath = join(xdg.configHome.path, userGestureConfigFilePath);
+    configFilePath.sout();
+    var file = File(configFilePath);
+    if (scheme.id == Uuid.NAMESPACE_NIL) {
+      if (file.existsSync()) file.deleteSync();
+    } else {
+      if (!file.existsSync()) file.createSync(recursive: true);
+      file.writeAsStringSync(
+        H.transGesturePropsToConfig(scheme.gestures ?? []),
+        flush: true,
+      );
+      Notificator.showConfirm(
+        title: LocaleKeys.info_apply_scheme_success.tr(),
+        description: LocaleKeys.info_apply_scheme_description.tr(),
+        positiveButtonTitle: LocaleKeys.info_apply_scheme_logout_immediately.tr(),
+        negativeButtonTitle: LocaleKeys.str_cancel.tr(),
+      ).then((value) {
+        if (value == CustomButton.positiveButton) {
+          Process.run(deepinLogoutCommands.first, deepinLogoutCommands.skip(1).toList());
+        }
+      });
+    }
+  }
+}

app/lib/utils/apply_scheme_web.dart

@@ -0,0 +1,39 @@
+import 'package:dde_gesture_manager/constants/constants.dart';
+import 'package:dde_gesture_manager/extensions.dart';
+import 'package:dde_gesture_manager/models/scheme.dart';
+import 'package:dde_gesture_manager/utils/helper.dart';
+import 'package:dde_gesture_manager/utils/notificator.dart';
+import 'package:flutter/material.dart';
+import 'package:uuid/uuid.dart';
+import 'apply_scheme_interface.dart';
+import 'package:flutter/services.dart';
+
+class SchemeApplyUtil implements SchemeApplyUtilStub {
+  void apply(BuildContext context, Scheme scheme) {
+    var cmd = scheme.id == Uuid.NAMESPACE_NIL
+        ? [
+            'rm \$XDG_CONFIG_HOME/${userGestureConfigFilePath}',
+          ]
+        : [
+            'cat > \$XDG_CONFIG_HOME/${userGestureConfigFilePath} << EOF',
+            '${H.transGesturePropsToConfig(scheme.gestures ?? [])}',
+            'EOF',
+          ];
+    cmd.add('zenity'
+        ' --title=${LocaleKeys.info_apply_scheme_success.tr()}'
+        ' --question'
+        ' --no-wrap'
+        ' --text=${LocaleKeys.info_apply_scheme_description.tr()}'
+        ' --ok-label=${LocaleKeys.info_apply_scheme_logout_immediately.tr()}'
+        ' --cancel-label=${LocaleKeys.str_cancel.tr()}'
+        ' && ${deepinLogoutCommands.join(' ')}');
+    Clipboard.setData(ClipboardData(
+      text: cmd.join('\n'),
+    ));
+    Notificator.success(
+      context,
+      title: LocaleKeys.info_apply_scheme_commands_copied_title.tr(),
+      description: LocaleKeys.info_apply_scheme_commands_copied_description.tr(),
+    );
+  }
+}

app/lib/utils/helper.dart

@@ -1,3 +1,5 @@
+import 'dart:convert';
+
 import 'package:dde_gesture_manager/constants/constants.dart';
 import 'package:dde_gesture_manager/extensions.dart';
 import 'package:dde_gesture_manager/models/content_layout.provider.dart';
@@ -130,6 +132,23 @@ class H {
 
   static void handleDownloadScheme(BuildContext context, SchemeForDownload value) =>
       localManagerKey.currentState?.addLocalScheme(context, value);
+
+  static String transGesturePropsToConfig(List<GestureProp> gestures) =>
+      JsonEncoder.withIndent(' ' * 4).convert(gestures
+          .map(
+            (gesture) => {
+              "Event": {
+                "Name": gesture.gesture!.name,
+                "Direction": H.getGestureDirectionName(gesture.direction),
+                "Fingers": gesture.fingers,
+              },
+              "Action": {
+                "Type": gesture.type!.name,
+                "Action": gesture.command,
+              },
+            },
+          )
+          .toList());
 }
 
 class PreferredPanelsStatus {