Fix images

lib/components/image_bubble.dart

@@ -13,7 +13,12 @@ class ImageBubble extends StatefulWidget {
 }
 
 class _ImageBubbleState extends State<ImageBubble> {
-  MatrixFile _file;
+  static Map<String, MatrixFile> _matrixFileMap = {};
+  MatrixFile get _file => _matrixFileMap[widget.event.eventId];
+  set _file(MatrixFile file) {
+    _matrixFileMap[widget.event.eventId] = file;
+  }
+
   dynamic _error;
 
   Future<MatrixFile> _getFile() async {

lib/views/chat_list.dart

@@ -211,6 +211,14 @@ class _ChatListState extends State<ChatList> {
                   searchMode = false;
                 }),
               )
+            : selectMode == SelectMode.share
+                ? IconButton(
+                    icon: Icon(Icons.close),
+                    onPressed: () {
+                      Matrix.of(context).shareContent = null;
+                      setState(() => selectMode = SelectMode.normal);
+                    },
+                  )
                 : null,
         automaticallyImplyLeading: false,
         actions: searchMode
@@ -242,14 +250,6 @@ class _ChatListState extends State<ChatList> {
                   icon: Icon(Icons.search),
                   onPressed: () => setState(() => searchMode = true),
                 ),
-                if (selectMode == SelectMode.share)
-                  IconButton(
-                    icon: Icon(Icons.close),
-                    onPressed: () {
-                      Matrix.of(context).shareContent = null;
-                      setState(() => selectMode = SelectMode.normal);
-                    },
-                  ),
                 if (selectMode == SelectMode.normal)
                   PopupMenuButton(
                     onSelected: (String choice) {
@@ -288,7 +288,9 @@ class _ChatListState extends State<ChatList> {
                   ),
               ],
       ),
-      floatingActionButton: SpeedDial(
+      floatingActionButton: selectMode == SelectMode.share
+          ? null
+          : SpeedDial(
               child: Icon(Icons.add),
               overlayColor: blackWhiteColor(context),
               foregroundColor: Colors.white,