Support select all for node selection (#4233)

packages/lexical-playground/__tests__/e2e/Selection.spec.mjs

@@ -11,6 +11,7 @@ import {
   moveToLineBeginning,
   moveToPrevWord,
   pressShiftEnter,
+  selectAll,
 } from '../keyboardShortcuts/index.mjs';
 import {
   assertHTML,
@@ -264,4 +265,20 @@ test.describe('Selection', () => {
       `,
     );
   });
+
+  test('Can select all with node selection', async ({page, isPlainText}) => {
+    test.skip(isPlainText);
+    await focusEditor(page);
+    await page.keyboard.type('Text before');
+    await insertSampleImage(page);
+    await page.keyboard.type('Text after');
+    await selectAll(page);
+    await page.keyboard.press('Delete');
+    await assertHTML(
+      page,
+      html`
+        <p class="PlaygroundEditorTheme__paragraph"><br /></p>
+      `,
+    );
+  });
 });

packages/lexical/src/LexicalEvents.ts

@@ -116,6 +116,7 @@ import {
   isOpenLineBreak,
   isParagraph,
   isRedo,
+  isSelectAll,
   isSelectionWithinEditor,
   isSpace,
   isTab,
@@ -180,6 +181,7 @@ let collapsedSelectionFormat: [number, string, number, NodeKey, number] = [
 // work as intended between different browsers and across word, line and character
 // boundary/formats. It also is important for text replacement, node schemas and
 // composition mechanics.
+
 function $shouldPreventDefaultAndInsertText(
   selection: RangeSelection,
   domTargetRange: null | StaticRange,
@@ -977,6 +979,12 @@ function onKeyDown(event: KeyboardEvent, editor: LexicalEditor): void {
       } else if (isCut(keyCode, shiftKey, metaKey, ctrlKey)) {
         event.preventDefault();
         dispatchCommand(editor, CUT_COMMAND, event);
+      } else if (isSelectAll(keyCode, metaKey, ctrlKey)) {
+        event.preventDefault();
+        editor.update(() => {
+          const root = $getRoot();
+          root.select(0, root.getChildrenSize());
+        });
       }
     }
   }

packages/lexical/src/LexicalUtils.ts

@@ -1031,6 +1031,14 @@ export function isDelete(keyCode: number): boolean {
   return keyCode === 46;
 }
 
+export function isSelectAll(
+  keyCode: number,
+  metaKey: boolean,
+  ctrlKey: boolean,
+): boolean {
+  return keyCode === 65 && controlOrMeta(metaKey, ctrlKey);
+}
+
 export function getCachedClassNameArray(
   classNamesTheme: EditorThemeClasses,
   classNameThemeType: string,