fix: focusNode lost focus

frontend/app_flowy/packages/flowy_editor/lib/service/internal_key_event_handlers/slash_handler.dart

@@ -208,9 +208,16 @@ class _PopupListWidgetState extends State<PopupListWidget> {
     }
 
     if (event.logicalKey == LogicalKeyboardKey.enter) {
+      if (0 <= selectedIndex && selectedIndex < widget.items.length) {
         widget.items[selectedIndex].handler(widget.editorState);
         return KeyEventResult.handled;
       }
+    }
+
+    if (event.logicalKey == LogicalKeyboardKey.escape) {
+      clearPopupListOverlay();
+      return KeyEventResult.handled;
+    }
 
     var newSelectedIndex = selectedIndex;
     if (event.logicalKey == LogicalKeyboardKey.arrowLeft) {

frontend/app_flowy/packages/flowy_editor/lib/service/keyboard_service.dart

@@ -32,23 +32,23 @@ class FlowyKeyboard extends StatefulWidget {
 
 class _FlowyKeyboardState extends State<FlowyKeyboard>
     with FlowyKeyboardService {
-  final FocusNode focusNode = FocusNode(debugLabel: 'flowy_keyboard_service');
+  final FocusNode _focusNode = FocusNode(debugLabel: 'flowy_keyboard_service');
 
   bool isFocus = true;
 
   @override
   Widget build(BuildContext context) {
     return Focus(
-      focusNode: focusNode,
-      autofocus: true,
+      focusNode: _focusNode,
       onKey: _onKey,
+      onFocusChange: _onFocusChange,
       child: widget.child,
     );
   }
 
   @override
   void dispose() {
-    focusNode.dispose();
+    _focusNode.dispose();
 
     super.dispose();
   }
@@ -56,13 +56,17 @@ class _FlowyKeyboardState extends State<FlowyKeyboard>
   @override
   void enable() {
     isFocus = true;
-    focusNode.requestFocus();
+    _focusNode.requestFocus();
   }
 
   @override
   void disable() {
     isFocus = false;
-    focusNode.unfocus();
+    _focusNode.unfocus();
+  }
+
+  void _onFocusChange(bool value) {
+    debugPrint('[KeyBoard Service] focus change $value');
   }
 
   KeyEventResult _onKey(FocusNode node, RawKeyEvent event) {

frontend/app_flowy/packages/flowy_editor/lib/service/selection_service.dart

@@ -265,6 +265,8 @@ class _FlowySelectionState extends State<FlowySelection>
     }
     final selection = Selection.collapsed(position);
     editorState.updateCursorSelection(selection);
+
+    editorState.service.keyboardService?.enable();
   }
 
   @override