chore: adjust context menu visibility logic (#1158)

* chore: default example context menu

* chore: adjust context menu visibility logic

* chore: dart analyzer

example/lib/pages/desktop_editor.dart

@@ -97,6 +97,14 @@ class _DesktopEditorState extends State<DesktopEditor> {
           dropTargetStyle: const AppFlowyDropTargetStyle(
             color: Colors.red,
           ),
+          contextMenuBuilder: (context, position, editorState, onPressed) {
+            return ContextMenu(
+              position: position,
+              editorState: editorState,
+              items: standardContextMenuItems,
+              onPressed: onPressed,
+            );
+          },
           header: Padding(
             padding: const EdgeInsets.only(bottom: 10.0),
             child: Image.asset(

lib/appflowy_editor.dart

@@ -26,6 +26,7 @@ export 'src/plugins/plugins.dart';
 export 'src/render/selection/selectable.dart';
 export 'src/render/toolbar/toolbar_item.dart';
 export 'src/service/context_menu/context_menu.dart';
+export 'src/service/context_menu/built_in_context_menu_item.dart';
 export 'src/service/default_text_operations/format_rich_text_style.dart';
 export 'src/service/internal_key_event_handlers/copy_paste_handler.dart';
 export 'src/service/shortcut_event/key_mapping.dart';

lib/src/editor/editor_component/service/editor.dart

@@ -2,7 +2,6 @@ import 'dart:math';
 
 import 'package:appflowy_editor/appflowy_editor.dart';
 import 'package:appflowy_editor/src/flutter/overlay.dart';
-import 'package:appflowy_editor/src/service/context_menu/built_in_context_menu_item.dart';
 import 'package:flutter/material.dart' hide Overlay, OverlayEntry;
 import 'package:provider/provider.dart';
 
@@ -125,8 +124,7 @@ class AppFlowyEditor extends StatefulWidget {
   ///
   /// It will be shown when the user right click on the editor.
   ///
-  /// Defaults to a standard implementation containing
-  /// [standardContextMenuItems].
+  /// See the built-in [ContextMenu] implementation.
   ///
   final ContextMenuWidgetBuilder? contextMenuBuilder;
 

lib/src/editor/editor_component/service/selection/desktop_selection_service.dart

@@ -286,15 +286,45 @@ class _DesktopSelectionServiceWidgetState
   }
 
   void _onSecondaryTapDown(TapDownDetails details) {
-    // if selection is null, or
-    // selection.isCollapsed and the selected node is TextNode.
-    // try to select the word.
+    final offset = details.globalPosition;
     final selection = editorState.selectionNotifier.value;
-    if (selection == null ||
-        (selection.isCollapsed == true &&
-            currentSelectedNodes.first.delta != null)) {
-      _onDoubleTapDown(details);
+    final selectable = getNodeInOffset(offset)?.selectable;
+    if (selectable == null) {
+      clearSelection();
+      return;
     }
+    final wordBoundary = selectable.getWordBoundaryInOffset(offset);
+
+    final Selection? newSelection;
+
+    final isSelectionCollapsed = selection == null || selection.isCollapsed;
+
+    final isWordBoundaryWithinSelection = !isSelectionCollapsed &&
+        wordBoundary != null &&
+        (wordBoundary.start.path > selection.start.path ||
+            wordBoundary.start.path == selection.start.path &&
+                wordBoundary.start.offset >= selection.start.offset) &&
+        (wordBoundary.end.path < selection.end.path ||
+            wordBoundary.end.path == selection.end.path &&
+                wordBoundary.end.offset <= selection.end.offset);
+
+    if (isWordBoundaryWithinSelection) {
+      newSelection = selection;
+    } else if (selectable.cursorStyle == CursorStyle.verticalLine) {
+      newSelection = wordBoundary;
+    } else {
+      newSelection = Selection(
+        start: selectable.start(),
+        end: selectable.end(),
+      );
+    }
+
+    editorState.updateSelectionWithReason(
+      newSelection,
+      extraInfo: {
+        selectionExtraInfoDisableToolbar: true,
+      },
+    );
 
     _showContextMenu(details);
   }
@@ -436,25 +466,22 @@ class _DesktopSelectionServiceWidgetState
       return;
     }
 
-    final isHitSelectionAreas = currentSelection.value?.isCollapsed == true ||
-        selectionRects.any((element) {
-          const threshold = 20;
-          final scaledArea = Rect.fromCenter(
-            center: element.center,
-            width: element.width + threshold,
-            height: element.height + threshold,
-          );
-          return scaledArea.contains(details.globalPosition);
-        });
-    if (!isHitSelectionAreas) {
-      return;
-    }
-
     // For now, only support the text node.
     if (!currentSelectedNodes.every((element) => element.delta != null)) {
       return;
     }
 
+    final mask = OverlayEntry(
+      builder: (_) => Listener(
+        onPointerDown: (_) => _clearContextMenu(),
+        child: Container(
+          color: Colors.transparent,
+        ),
+      ),
+    );
+    _contextMenuAreas.add(mask);
+    Overlay.of(context, rootOverlay: true).insert(mask);
+
     final baseOffset =
         editorState.renderBox?.localToGlobal(Offset.zero) ?? Offset.zero;
     final offset = details.localPosition + const Offset(10, 10) + baseOffset;

lib/src/editor/toolbar/desktop/floating_toolbar.dart

@@ -135,16 +135,23 @@ class _FloatingToolbarState extends State<FloatingToolbar>
   void _onSelectionChanged() {
     final selection = editorState.selection;
     final selectionType = editorState.selectionType;
+
+    final disableToolbar =
+        editorState.selectionExtraInfo?[selectionExtraInfoDisableToolbar] ==
+            true;
+
+    if (disableToolbar) {
+      _clear();
+    }
+
     if (lastSelection == selection) return;
     lastSelection = selection;
 
     if (selection == null ||
         selection.isCollapsed ||
-        selectionType == SelectionType.block ||
-        editorState.selectionExtraInfo?[selectionExtraInfoDisableToolbar] ==
-            true) {
+        selectionType == SelectionType.block) {
       _clear();
-    } else {
+    } else if (!disableToolbar) {
       // uses debounce to avoid the computing the rects too frequently.
       _showAfterDelay(
         duration: const Duration(milliseconds: 200),

test/new/infra/testable_editor.dart

@@ -1,6 +1,5 @@
 import 'package:appflowy_editor/appflowy_editor.dart';
 import 'package:appflowy_editor/src/editor/editor_component/service/ime/text_input_service.dart';
-import 'package:appflowy_editor/src/service/context_menu/built_in_context_menu_item.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_localizations/flutter_localizations.dart';