fix: split view focus (#11217)

# After:

https://github.com/user-attachments/assets/990d500d-2da7-488e-ac32-dd7bd229f896

# Before:

https://github.com/user-attachments/assets/6676766a-c76a-414b-a35e-53d2cda10c24

blocksuite/affine/fragments/fragment-doc-title/src/doc-title.ts

@@ -82,8 +82,10 @@ export class DocTitle extends WithDisposable(ShadowlessElement) {
 
   private readonly _onTitleKeyDown = (event: KeyboardEvent) => {
     if (event.isComposing || this.doc.readonly) return;
+    if (!this._std) return;
 
     if (event.key === 'Enter') {
+      this._std.event.active = true;
       event.preventDefault();
       event.stopPropagation();
 
@@ -99,6 +101,7 @@ export class DocTitle extends WithDisposable(ShadowlessElement) {
         if (this._std) focusTextModel(this._std, newFirstParagraphId);
       }
     } else if (event.key === 'ArrowDown') {
+      this._std.event.active = true;
       event.preventDefault();
       event.stopPropagation();
 

blocksuite/affine/fragments/fragment-outline/src/body/outline-panel-body.ts

@@ -1,8 +1,12 @@
 import { changeNoteDisplayMode } from '@blocksuite/affine-block-note';
 import { NoteBlockModel, NoteDisplayMode } from '@blocksuite/affine-model';
 import { DocModeProvider } from '@blocksuite/affine-shared/services';
-import { matchModels } from '@blocksuite/affine-shared/utils';
-import { ShadowlessElement, SurfaceSelection } from '@blocksuite/block-std';
+import { focusTitle, matchModels } from '@blocksuite/affine-shared/utils';
+import {
+  BlockSelection,
+  ShadowlessElement,
+  SurfaceSelection,
+} from '@blocksuite/block-std';
 import { GfxControllerIdentifier } from '@blocksuite/block-std/gfx';
 import { Bound } from '@blocksuite/global/gfx';
 import { SignalWatcher, WithDisposable } from '@blocksuite/global/lit';
@@ -170,6 +174,19 @@ export class OutlinePanelBody extends SignalWatcher(
   }
 
   private async _scrollToBlock(blockId: string) {
+    // if focus title
+    if (blockId === this.doc.root?.id) {
+      this.editor.std.selection.setGroup('note', []);
+      this.editor.std.event.active = false;
+      focusTitle(this.editor);
+    } else {
+      this.editor.std.event.active = true;
+      this.editor.std.selection.setGroup('note', [
+        this.editor.std.selection.create(BlockSelection, {
+          blockId,
+        }),
+      ]);
+    }
     this._lockActiveHeadingId = true;
     this._activeHeadingId$.value = blockId;
     this._clearHighlightMask = await scrollToBlockWithHighlight(

blocksuite/affine/rich-text/src/dom.ts

@@ -68,6 +68,7 @@ export function focusTextModel(
   id: string,
   offset: number = 0
 ) {
+  std.event.active = true;
   selectTextModel(std, id, offset);
 }
 

blocksuite/affine/shared/src/commands/selection/focus-block-end.ts

@@ -19,6 +19,7 @@ export const focusBlockEnd: Command<{
 
   const { selection } = std;
 
+  std.event.active = true;
   if (force) selection.clear();
 
   selection.setGroup('note', [

blocksuite/framework/block-std/src/event/dispatcher.ts

@@ -1,5 +1,6 @@
 import { DisposableGroup } from '@blocksuite/global/disposable';
 import { BlockSuiteError, ErrorCode } from '@blocksuite/global/exceptions';
+import { signal } from '@preact/signals-core';
 
 import { LifeCycleWatcher } from '../extension/index.js';
 import { KeymapIdentifier } from '../identifier.js';
@@ -81,7 +82,7 @@ export class UIEventDispatcher extends LifeCycleWatcher {
 
   static override readonly key = 'UIEventDispatcher';
 
-  private _active = false;
+  private readonly _active = signal(false);
 
   private readonly _clipboardControl: ClipboardControl;
 
@@ -105,6 +106,10 @@ export class UIEventDispatcher extends LifeCycleWatcher {
   }
 
   get active() {
+    return this._active.peek();
+  }
+
+  get active$() {
     return this._active;
   }
 
@@ -302,19 +307,24 @@ export class UIEventDispatcher extends LifeCycleWatcher {
     if (active) {
       if (UIEventDispatcher._activeDispatcher !== this) {
         if (UIEventDispatcher._activeDispatcher) {
-          UIEventDispatcher._activeDispatcher._active = false;
+          UIEventDispatcher._activeDispatcher._active.value = false;
         }
         UIEventDispatcher._activeDispatcher = this;
       }
-      this._active = true;
+      this._active.value = true;
     } else {
       if (UIEventDispatcher._activeDispatcher === this) {
         UIEventDispatcher._activeDispatcher = null;
       }
-      this._active = false;
+      this._active.value = false;
     }
   }
 
+  set active(active: boolean) {
+    if (active === this._active.peek()) return;
+    this._setActive(active);
+  }
+
   add(name: EventName, handler: UIEventHandler, options?: EventOptions) {
     const runner: EventHandlerRunner = {
       fn: handler,

blocksuite/framework/block-std/src/inline/range/range-binding.ts

@@ -169,7 +169,10 @@ export class RangeBinding {
   private readonly _onNativeSelectionChanged = async () => {
     if (this.isComposing) return;
     if (!this.host) return; // Unstable when switching views, card <-> embed
-    if (!isActiveInEditor(this.host)) return;
+    if (!isActiveInEditor(this.host)) {
+      this._prevTextSelection = null;
+      return;
+    }
 
     await this.host.updateComplete;
 
@@ -251,6 +254,8 @@ export class RangeBinding {
     // TODO(@mirone): this is a trade-off, we need to use separate awareness store for every store to make sure the selection is isolated.
     const closestHost = document.activeElement?.closest('editor-host');
     if (closestHost && closestHost !== this.host) return;
+    const active = this.host.event.active;
+    if (!active) return;
 
     const text =
       selections.find((selection): selection is TextSelection =>
@@ -266,7 +271,7 @@ export class RangeBinding {
         const id = text?.blockId;
         const path = id && this._computePath(id);
 
-        if (this.host.event.active) {
+        if (active) {
           const eq =
             text && this._prevTextSelection && path
               ? text.equals(this._prevTextSelection.selection) &&

tests/affine-local/e2e/blocksuite/editor.spec.ts

@@ -1,3 +1,4 @@
+import { waitNextFrame } from '@affine-test/kit/bs/misc';
 import { test } from '@affine-test/kit/playwright';
 import { locateEditorContainer } from '@affine-test/kit/utils/editor';
 import { openHomePage } from '@affine-test/kit/utils/load-page';
@@ -55,6 +56,7 @@ test('link page is useable', async ({ page }) => {
   await page.keyboard.press('g');
   await page.keyboard.press('e');
   await page.keyboard.press('1');
+  await waitNextFrame(page);
   await page.locator('icon-button:has-text("page1")').first().click();
   const link = page.locator('.affine-reference');
   await expect(link).toBeVisible();

tests/blocksuite/e2e/bookmark.spec.ts

@@ -127,6 +127,7 @@ test(
 
     await activeNoteInEdgeless(page, ids.noteId);
     await waitForInlineEditorStateUpdated(page);
+    await focusRichText(page);
     await selectAllByKeyboard(page);
     await copyByKeyboard(page);
     await pressArrowRight(page);

tests/blocksuite/e2e/clipboard/clipboard.spec.ts

@@ -5,7 +5,6 @@ import { expect } from '@playwright/test';
 import {
   captureHistory,
   copyByKeyboard,
-  dragBetweenCoords,
   dragOverTitle,
   enterPlaygroundRoom,
   focusRichText,
@@ -20,15 +19,18 @@ import {
   mockParseDocUrlService,
   pasteByKeyboard,
   pasteContent,
+  pressArrowRight,
   pressEnter,
   pressShiftTab,
   pressTab,
   resetHistory,
+  selectAllByKeyboard,
   setInlineRangeInSelectedRichText,
   setSelection,
   SHORT_KEY,
   type,
   undoByClick,
+  undoByKeyboard,
   waitNextFrame,
 } from '../utils/actions/index.js';
 import {
@@ -106,15 +108,15 @@ test(scoped`split block when paste`, async ({ page }) => {
 `,
   };
   await type(page, 'abc');
-  await captureHistory(page);
 
   await setInlineRangeInSelectedRichText(page, 1, 1);
+  await captureHistory(page);
   await pasteContent(page, clipData);
   await waitNextFrame(page);
 
   await assertRichTexts(page, ['atext', 'h1c']);
 
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertRichTexts(page, ['abc']);
 
   await type(page, 'aa');
@@ -132,11 +134,12 @@ test(scoped`split block when paste`, async ({ page }) => {
   if (!bottomRight789) {
     throw new Error('bottomRight789 is not found');
   }
-  await dragBetweenCoords(page, topLeft123, bottomRight789);
+  await selectAllByKeyboard(page);
+  await pressArrowRight(page);
+  await pressEnter(page);
 
-  // FIXME see https://github.com/toeverything/blocksuite/pull/878
-  // await pasteContent(page, clipData);
-  // await assertRichTexts(page, ['aaa', 'bbc', 'text', 'h1']);
+  await pasteContent(page, clipData);
+  await assertRichTexts(page, ['aaa', 'bbc', 'text', 'h1']);
 });
 
 test(scoped`copy clipItems format`, async ({ page }) => {

tests/blocksuite/e2e/clipboard/list.spec.ts

@@ -481,6 +481,7 @@ test(scoped`copy when text note active in edgeless`, async ({ page }) => {
 
   await activeNoteInEdgeless(page, ids.noteId);
   await waitForInlineEditorStateUpdated(page);
+  await focusRichText(page);
   await setInlineRangeInSelectedRichText(page, 0, 4);
   await copyByKeyboard(page);
   await pressArrowRight(page);

tests/blocksuite/e2e/link.spec.ts

@@ -288,6 +288,7 @@ test('link bar should not be appear when the range is collapsed', async ({
   await pressCreateLinkShortCut(page);
   await expect(linkPopoverLocator).toBeVisible();
 
+  await focusRichText(page); // click to cancel the link popover
   await focusRichTextEnd(page);
   await pressEnter(page);
   // create auto line-break in span element

tests/blocksuite/e2e/markdown.spec.ts

@@ -37,9 +37,9 @@ test('markdown shortcut', async ({ page }) => {
   await waitNextFrame(page);
   [id] = await getCursorBlockIdAndHeight(page);
   await assertBlockType(page, id, 'todo');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertText(page, '[] ');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   //FIXME: it just failed in playwright
   await focusRichText(page);
   await assertRichTexts(page, ['']);
@@ -49,9 +49,9 @@ test('markdown shortcut', async ({ page }) => {
   await waitNextFrame(page);
   [id] = await getCursorBlockIdAndHeight(page);
   await assertBlockType(page, id, 'todo');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertText(page, '[ ] ');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   //FIXME: it just failed in playwright
   await focusRichText(page);
   await assertRichTexts(page, ['']);
@@ -61,9 +61,9 @@ test('markdown shortcut', async ({ page }) => {
   await waitNextFrame(page);
   [id] = await getCursorBlockIdAndHeight(page);
   await assertBlockType(page, id, 'todo');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertText(page, '[x] ');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertRichTexts(page, ['']);
 
   await waitNextFrame(page);
@@ -71,9 +71,9 @@ test('markdown shortcut', async ({ page }) => {
   await waitNextFrame(page);
   [id] = await getCursorBlockIdAndHeight(page);
   await assertBlockType(page, id, 'bulleted');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertText(page, '* ');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertRichTexts(page, ['']);
 
   await waitNextFrame(page);
@@ -81,9 +81,9 @@ test('markdown shortcut', async ({ page }) => {
   await waitNextFrame(page);
   [id] = await getCursorBlockIdAndHeight(page);
   await assertBlockType(page, id, 'bulleted');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertText(page, '- ');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertRichTexts(page, ['']);
 
   await waitNextFrame(page);
@@ -91,9 +91,9 @@ test('markdown shortcut', async ({ page }) => {
   await waitNextFrame(page);
   [id] = await getCursorBlockIdAndHeight(page);
   await assertBlockType(page, id, 'numbered');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertText(page, '1. ');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertRichTexts(page, ['']);
 
   await waitNextFrame(page);
@@ -101,9 +101,9 @@ test('markdown shortcut', async ({ page }) => {
   await waitNextFrame(page);
   [id] = await getCursorBlockIdAndHeight(page);
   await assertBlockType(page, id, 'numbered');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertText(page, '20. ');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertRichTexts(page, ['']);
 
   await waitNextFrame(page);
@@ -111,9 +111,9 @@ test('markdown shortcut', async ({ page }) => {
   await waitNextFrame(page);
   [id] = await getCursorBlockIdAndHeight(page);
   await assertBlockType(page, id, 'h1');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertText(page, '# ');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertRichTexts(page, ['']);
 
   await waitNextFrame(page);
@@ -121,9 +121,9 @@ test('markdown shortcut', async ({ page }) => {
   await waitNextFrame(page);
   [id] = await getCursorBlockIdAndHeight(page);
   await assertBlockType(page, id, 'h2');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertText(page, '## ');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertRichTexts(page, ['']);
 
   await waitNextFrame(page);
@@ -131,9 +131,9 @@ test('markdown shortcut', async ({ page }) => {
   await waitNextFrame(page);
   [id] = await getCursorBlockIdAndHeight(page);
   await assertBlockType(page, id, 'h3');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertText(page, '### ');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertRichTexts(page, ['']);
 
   await waitNextFrame(page);
@@ -141,9 +141,9 @@ test('markdown shortcut', async ({ page }) => {
   await waitNextFrame(page);
   [id] = await getCursorBlockIdAndHeight(page);
   await assertBlockType(page, id, 'h4');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertText(page, '#### ');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertRichTexts(page, ['']);
 
   await waitNextFrame(page);
@@ -151,9 +151,9 @@ test('markdown shortcut', async ({ page }) => {
   await waitNextFrame(page);
   [id] = await getCursorBlockIdAndHeight(page);
   await assertBlockType(page, id, 'h5');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertText(page, '##### ');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertRichTexts(page, ['']);
 
   await waitNextFrame(page);
@@ -161,9 +161,9 @@ test('markdown shortcut', async ({ page }) => {
   await waitNextFrame(page);
   [id] = await getCursorBlockIdAndHeight(page);
   await assertBlockType(page, id, 'h6');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertText(page, '###### ');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertRichTexts(page, ['']);
 
   await waitNextFrame(page);
@@ -171,17 +171,17 @@ test('markdown shortcut', async ({ page }) => {
   await waitNextFrame(page);
   [id] = await getCursorBlockIdAndHeight(page);
   await assertBlockType(page, id, 'quote');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertText(page, '> ');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertRichTexts(page, ['']);
 
   // testing various horizontal dividers
   await waitNextFrame(page);
   await type(page, '--- ');
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertRichTexts(page, ['--- ']);
-  await undoByClick(page);
+  await undoByKeyboard(page);
   await assertRichTexts(page, ['']);
 
   await waitNextFrame(page);