fix: Popup menu without elevation

lib/pages/chat/chat_input_row.dart

@@ -10,6 +10,7 @@ import 'package:fluffychat/config/app_config.dart';
 import 'package:fluffychat/utils/platform_infos.dart';
 import 'package:fluffychat/widgets/avatar.dart';
 import 'package:fluffychat/widgets/matrix.dart';
+import '../../widgets/m2_popup_menu_button.dart';
 import 'chat.dart';
 import 'input_bar.dart';
 
@@ -89,7 +90,7 @@ class ChatInputRow extends StatelessWidget {
                   alignment: Alignment.center,
                   clipBehavior: Clip.hardEdge,
                   decoration: const BoxDecoration(),
-                  child: PopupMenuButton<String>(
+                  child: M2PopupMenuButton<String>(
                     icon: const Icon(Icons.add_outlined),
                     onSelected: controller.onAddPopupMenuButtonSelected,
                     itemBuilder: (BuildContext context) =>
@@ -295,7 +296,7 @@ class _ChatAccountPicker extends StatelessWidget {
       padding: const EdgeInsets.all(8.0),
       child: FutureBuilder<Profile>(
         future: controller.sendingClient!.fetchOwnProfile(),
-        builder: (context, snapshot) => PopupMenuButton<String>(
+        builder: (context, snapshot) => M2PopupMenuButton<String>(
           onSelected: _popupMenuButtonSelected,
           itemBuilder: (BuildContext context) => clients
               .map((client) => PopupMenuItem<String>(

lib/pages/chat/chat_view.dart

@@ -21,6 +21,7 @@ import 'package:fluffychat/widgets/connection_status_header.dart';
 import 'package:fluffychat/widgets/matrix.dart';
 import 'package:fluffychat/widgets/unread_badge_back_button.dart';
 import '../../utils/stream_extension.dart';
+import '../../widgets/m2_popup_menu_button.dart';
 import 'chat_emoji_picker.dart';
 import 'chat_input_row.dart';
 
@@ -65,7 +66,7 @@ class ChatView extends StatelessWidget {
           tooltip: L10n.of(context)!.pinMessage,
         ),
         if (controller.selectedEvents.length == 1)
-          PopupMenuButton<_EventContextAction>(
+          M2PopupMenuButton<_EventContextAction>(
             onSelected: (action) {
               switch (action) {
                 case _EventContextAction.info:

lib/pages/chat_details/chat_details_view.dart

@@ -16,6 +16,7 @@ import 'package:fluffychat/widgets/content_banner.dart';
 import 'package:fluffychat/widgets/layouts/max_width_body.dart';
 import 'package:fluffychat/widgets/matrix.dart';
 import '../../utils/url_launcher.dart';
+import '../../widgets/m2_popup_menu_button.dart';
 
 class ChatDetailsView extends StatelessWidget {
   final ChatDetailsController controller;
@@ -197,7 +198,7 @@ class ChatDetailsView extends StatelessWidget {
                                     Text(L10n.of(context)!.setCustomEmotes),
                                 onTap: controller.goToEmoteSettings,
                               ),
-                              PopupMenuButton(
+                              M2PopupMenuButton(
                                 onSelected: controller.setJoinRulesAction,
                                 itemBuilder: (BuildContext context) =>
                                     <PopupMenuEntry<JoinRules>>[
@@ -231,7 +232,7 @@ class ChatDetailsView extends StatelessWidget {
                                   ),
                                 ),
                               ),
-                              PopupMenuButton(
+                              M2PopupMenuButton(
                                 onSelected:
                                     controller.setHistoryVisibilityAction,
                                 itemBuilder: (BuildContext context) =>
@@ -284,7 +285,7 @@ class ChatDetailsView extends StatelessWidget {
                                 ),
                               ),
                               if (room.joinRules == JoinRules.public)
-                                PopupMenuButton(
+                                M2PopupMenuButton(
                                   onSelected: controller.setGuestAccessAction,
                                   itemBuilder: (BuildContext context) =>
                                       <PopupMenuEntry<GuestAccess>>[

lib/pages/chat_encryption_settings/chat_encryption_settings_view.dart

@@ -9,6 +9,7 @@ import 'package:fluffychat/widgets/avatar.dart';
 import 'package:fluffychat/widgets/layouts/max_width_body.dart';
 import 'package:fluffychat/widgets/matrix.dart';
 import '../../utils/matrix_sdk_extensions.dart/device_extension.dart';
+import '../../widgets/m2_popup_menu_button.dart';
 
 class ChatEncryptionSettingsView extends StatelessWidget {
   final ChatEncryptionSettingsController controller;
@@ -73,7 +74,7 @@ class ChatEncryptionSettingsView extends StatelessWidget {
                                 deviceKeys[i].userId !=
                                     deviceKeys[i - 1].userId) ...{
                               const Divider(height: 1, thickness: 1),
-                              PopupMenuButton(
+                              M2PopupMenuButton(
                                 onSelected: (dynamic action) => controller
                                     .onSelected(context, action, deviceKeys[i]),
                                 itemBuilder: (c) {
@@ -115,7 +116,7 @@ class ChatEncryptionSettingsView extends StatelessWidget {
                                 ),
                               ),
                             },
-                            PopupMenuButton(
+                            M2PopupMenuButton(
                               onSelected: (dynamic action) => controller
                                   .onSelected(context, action, deviceKeys[i]),
                               itemBuilder: (c) {

lib/pages/chat_list/client_chooser_button.dart

@@ -9,6 +9,7 @@ import 'package:vrouter/vrouter.dart';
 import 'package:fluffychat/widgets/avatar.dart';
 import 'package:fluffychat/widgets/matrix.dart';
 import '../../utils/fluffy_share.dart';
+import '../../widgets/m2_popup_menu_button.dart';
 import 'chat_list.dart';
 
 class ClientChooserButton extends StatelessWidget {
@@ -191,24 +192,18 @@ class ClientChooserButton extends StatelessWidget {
             onKeysPressed: () => _previousAccount(matrix, context),
             child: Container(),
           ),
-          Theme(
-            data: Theme.of(context),
-            child: PopupMenuButton<Object>(
-              shape: Border.all(
-                color: Theme.of(context).dividerColor,
-              ),
-              onSelected: (o) => _clientSelected(o, context),
-              itemBuilder: _bundleMenuItems,
-              child: Material(
-                color: Colors.transparent,
-                borderRadius: BorderRadius.circular(99),
-                child: Avatar(
-                  mxContent: snapshot.data?.avatarUrl,
-                  name: snapshot.data?.displayName ??
-                      matrix.client.userID!.localpart,
-                  size: 28,
-                  fontSize: 12,
-                ),
+          M2PopupMenuButton<Object>(
+            onSelected: (o) => _clientSelected(o, context),
+            itemBuilder: _bundleMenuItems,
+            child: Material(
+              color: Colors.transparent,
+              borderRadius: BorderRadius.circular(99),
+              child: Avatar(
+                mxContent: snapshot.data?.avatarUrl,
+                name: snapshot.data?.displayName ??
+                    matrix.client.userID!.localpart,
+                size: 28,
+                fontSize: 12,
               ),
             ),
           ),

lib/pages/story/story_view.dart

@@ -14,6 +14,7 @@ import 'package:fluffychat/utils/platform_infos.dart';
 import 'package:fluffychat/utils/string_color.dart';
 import 'package:fluffychat/utils/url_launcher.dart';
 import 'package:fluffychat/widgets/avatar.dart';
+import '../../widgets/m2_popup_menu_button.dart';
 
 class StoryView extends StatelessWidget {
   final StoryPageController controller;
@@ -101,7 +102,7 @@ class StoryView extends StatelessWidget {
                     icon: Icon(Icons.adaptive.share_outlined),
                     onPressed: controller.share,
                   ),
-                PopupMenuButton<PopupStoryAction>(
+                M2PopupMenuButton<PopupStoryAction>(
                   color: Colors.white,
                   onSelected: controller.onPopupStoryAction,
                   itemBuilder: (context) => [

lib/pages/user_bottom_sheet/user_bottom_sheet_view.dart

@@ -9,6 +9,7 @@ import 'package:fluffychat/config/themes.dart';
 import 'package:fluffychat/utils/fluffy_share.dart';
 import '../../utils/matrix_sdk_extensions.dart/presence_extension.dart';
 import '../../widgets/content_banner.dart';
+import '../../widgets/m2_popup_menu_button.dart';
 import '../../widgets/matrix.dart';
 import 'user_bottom_sheet.dart';
 
@@ -43,7 +44,7 @@ class UserBottomSheetView extends StatelessWidget {
                 title: Text(user.calcDisplayname()),
                 actions: [
                   if (user.id != client.userID)
-                    PopupMenuButton(
+                    M2PopupMenuButton(
                       itemBuilder: (_) => [
                         if (controller.widget.onMention != null)
                           PopupMenuItem(