feat: Converted message_search_list_view.dart

packages/flutter_widgets/lib/src/message_search_list_view.dart

@@ -119,89 +119,50 @@ class MessageSearchListView extends StatefulWidget {
 }
 
 class _MessageSearchListViewState extends State<MessageSearchListView> {
-  @override
+  MessageSearchListController _messageSearchListController =
-  void initState() {
+      MessageSearchListController();
-    super.initState();
-    final messageSearchBloc = MessageSearchBloc.of(context);
-    messageSearchBloc.search(
-      filter: widget.filters,
-      sort: widget.sortOptions,
-      query: widget.messageQuery,
-      pagination: widget.paginationParams,
-      messageFilter: widget.messageFilters,
-    );
-  }
 
   @override
   Widget build(BuildContext context) {
-    final messageSearchBloc = MessageSearchBloc.of(context);
+    return MessageSearchListCore(
-    return _buildListView(messageSearchBloc);
+      filters: widget.filters,
+      sortOptions: widget.sortOptions,
+      messageQuery: widget.messageQuery,
+      paginationParams: widget.paginationParams,
+      messageFilters: widget.messageFilters,
+      messageSearchListController: _messageSearchListController,
+      emptyBuilder: (context) {
+        if (widget.emptyBuilder != null) {
+          return widget.emptyBuilder(context, widget.messageQuery);
         }
-
+        return LayoutBuilder(
-  Widget _separatorBuilder(BuildContext context, int index) {
+          builder: (context, viewportConstraints) {
-    return Container(
+            return SingleChildScrollView(
-      height: 1,
+              physics: AlwaysScrollableScrollPhysics(),
-      color: StreamChatTheme.of(context).colorTheme.greyWhisper,
+              child: ConstrainedBox(
-    );
+                constraints: BoxConstraints(
-  }
+                  minHeight: viewportConstraints.maxHeight,
-
+                ),
-  Widget _listItemBuilder(
-      BuildContext context, GetMessageResponse getMessageResponse) {
-    if (widget.itemBuilder != null) {
-      return widget.itemBuilder(context, getMessageResponse);
-    }
-    return MessageSearchItem(
-      getMessageResponse: getMessageResponse,
-      onTap: () => widget.onItemTap(getMessageResponse),
-    );
-  }
-
-  Widget _buildQueryProgressIndicator(
-      context, MessageSearchBlocState messageSearchBloc) {
-    return StreamBuilder<bool>(
-        stream: messageSearchBloc.queryMessagesLoading,
-        initialData: false,
-        builder: (context, snapshot) {
-          if (snapshot.hasError) {
-            return Container(
-              color: StreamChatTheme.of(context)
-                  .colorTheme
-                  .accentRed
-                  .withOpacity(.2),
-              child: Padding(
-                padding: const EdgeInsets.symmetric(vertical: 16.0),
                 child: Center(
-                  child: Text('Error loading messages'),
+                  child: Text('There are no messages currently'),
                 ),
               ),
             );
-          }
+          },
-          return Container(
-            height: 100,
-            padding: EdgeInsets.all(32),
-            child: Center(
-              child: snapshot.data ? CircularProgressIndicator() : Container(),
-            ),
         );
-        });
+      },
-  }
+      errorBuilder: (error) {
-
+        if (error is Error) {
-  Widget _buildListView(MessageSearchBlocState messageSearchBloc) {
+          print((error).stackTrace);
-    return StreamBuilder<List<GetMessageResponse>>(
-      stream: messageSearchBloc.messagesStream,
-      builder: (context, snapshot) {
-        if (snapshot.hasError) {
-          if (snapshot.error is Error) {
-            print((snapshot.error as Error).stackTrace);
         }
 
         if (widget.errorBuilder != null) {
-            return widget.errorBuilder(snapshot.error);
+          return widget.errorBuilder(error);
         }
 
-          var message = snapshot.error.toString();
+        var message = error.toString();
-          if (snapshot.error is DioError) {
+        if (error is DioError) {
-            final dioError = snapshot.error as DioError;
+          final dioError = error as DioError;
           if (dioError.type == DioErrorType.RESPONSE) {
             message = dioError.message;
           } else {
@@ -237,13 +198,7 @@ class _MessageSearchListViewState extends State<MessageSearchListView> {
                 ),
                 RaisedButton(
                   onPressed: () {
-                      messageSearchBloc.search(
+                    _messageSearchListController.loadData();
-                        filter: widget.filters,
-                        sort: widget.sortOptions,
-                        query: widget.messageQuery,
-                        pagination: widget.paginationParams,
-                        messageFilter: widget.messageFilters,
-                      );
                   },
                   child: Text('Retry'),
                 ),
@@ -251,9 +206,8 @@ class _MessageSearchListViewState extends State<MessageSearchListView> {
             ),
           ),
         );
-        }
+      },
-
+      loadingBuilder: (context) {
-        if (!snapshot.hasData) {
         return LayoutBuilder(
           builder: (context, viewportConstraints) {
             return SingleChildScrollView(
@@ -269,31 +223,65 @@ class _MessageSearchListViewState extends State<MessageSearchListView> {
             );
           },
         );
-        }
+      },
-
+      childBuilder: (list) {
-        final items = snapshot.data;
+        return _buildListView(list);
-
-        if (items.isEmpty) {
-          if (widget.emptyBuilder != null) {
-            return widget.emptyBuilder(context, widget.messageQuery);
-          }
-          return LayoutBuilder(
-            builder: (context, viewportConstraints) {
-              return SingleChildScrollView(
-                physics: AlwaysScrollableScrollPhysics(),
-                child: ConstrainedBox(
-                  constraints: BoxConstraints(
-                    minHeight: viewportConstraints.maxHeight,
-                  ),
-                  child: Center(
-                    child: Text('There are no messages currently'),
-                  ),
-                ),
-              );
       },
     );
   }
 
+  Widget _separatorBuilder(BuildContext context, int index) {
+    return Container(
+      height: 1,
+      color: StreamChatTheme.of(context).colorTheme.greyWhisper,
+    );
+  }
+
+  Widget _listItemBuilder(
+      BuildContext context, GetMessageResponse getMessageResponse) {
+    if (widget.itemBuilder != null) {
+      return widget.itemBuilder(context, getMessageResponse);
+    }
+    return MessageSearchItem(
+      getMessageResponse: getMessageResponse,
+      onTap: () => widget.onItemTap(getMessageResponse),
+    );
+  }
+
+  Widget _buildQueryProgressIndicator(context) {
+    MessageSearchBlocState messageSearchBloc = MessageSearchBloc.of(context);
+
+    return StreamBuilder<bool>(
+        stream: messageSearchBloc.queryMessagesLoading,
+        initialData: false,
+        builder: (context, snapshot) {
+          if (snapshot.hasError) {
+            return Container(
+              color: StreamChatTheme.of(context)
+                  .colorTheme
+                  .accentRed
+                  .withOpacity(.2),
+              child: Padding(
+                padding: const EdgeInsets.symmetric(vertical: 16.0),
+                child: Center(
+                  child: Text('Error loading messages'),
+                ),
+              ),
+            );
+          }
+          return Container(
+            height: 100,
+            padding: EdgeInsets.all(32),
+            child: Center(
+              child: snapshot.data ? CircularProgressIndicator() : Container(),
+            ),
+          );
+        });
+  }
+
+  Widget _buildListView(List<GetMessageResponse> data) {
+    final items = data;
+
     Widget child = ListView.separated(
       physics: AlwaysScrollableScrollPhysics(),
       itemCount: items.isNotEmpty ? items.length + 1 : items.length,
@@ -307,32 +295,22 @@ class _MessageSearchListViewState extends State<MessageSearchListView> {
         if (index < items.length) {
           return _listItemBuilder(context, items[index]);
         }
-            return _buildQueryProgressIndicator(context, messageSearchBloc);
+        return _buildQueryProgressIndicator(context);
       },
     );
     if (widget.pullToRefresh) {
       child = RefreshIndicator(
-            onRefresh: () async => messageSearchBloc.search(
+        onRefresh: () async {
-              filter: widget.filters,
+          _messageSearchListController.loadData();
-              sort: widget.sortOptions,
+        },
-              query: widget.messageQuery,
-              pagination: widget.paginationParams,
-              messageFilter: widget.messageFilters,
-            ),
         child: child,
       );
     }
 
     child = LazyLoadScrollView(
-          onEndOfPage: () => messageSearchBloc.loadMore(
+      onEndOfPage: () async {
-            filter: widget.filters,
+        return _messageSearchListController.paginateData();
-            sort: widget.sortOptions,
+      },
-            pagination: widget.paginationParams.copyWith(
-              offset: messageSearchBloc.messageResponses?.length ?? 0,
-            ),
-            query: widget.messageQuery,
-            messageFilter: widget.messageFilters,
-          ),
       child: child,
     );
 
@@ -362,28 +340,5 @@ class _MessageSearchListViewState extends State<MessageSearchListView> {
       );
     }
     return child;
-      },
-    );
-  }
-
-  @override
-  void didUpdateWidget(MessageSearchListView oldWidget) {
-    super.didUpdateWidget(oldWidget);
-    if (widget.filters?.toString() != oldWidget.filters?.toString() ||
-        jsonEncode(widget.sortOptions) != jsonEncode(oldWidget.sortOptions) ||
-        widget.paginationParams?.toJson()?.toString() !=
-            oldWidget.paginationParams?.toJson()?.toString() ||
-        widget.messageQuery?.toString() != oldWidget.messageQuery?.toString() ||
-        widget.messageFilters?.toString() !=
-            oldWidget.messageFilters?.toString()) {
-      final messageSearchBloc = MessageSearchBloc.of(context);
-      messageSearchBloc.search(
-        filter: widget.filters,
-        sort: widget.sortOptions,
-        query: widget.messageQuery,
-        pagination: widget.paginationParams,
-        messageFilter: widget.messageFilters,
-      );
-    }
   }
 }