snapshot of https://github.com/toeverything/AFFiNE.git (canary, 2026-09-16; blobs > 131072B omitted)

blocksuite/affine/blocks/callout/src/commands/callout-to-paragraph.ts

@@ -0,0 +1,86 @@
+import {
+  CalloutBlockModel,
+  ParagraphBlockModel,
+} from '@blocksuite/affine-model';
+import { focusTextModel } from '@blocksuite/affine-rich-text';
+import { matchModels } from '@blocksuite/affine-shared/utils';
+import type { Command } from '@blocksuite/std';
+import { BlockSelection } from '@blocksuite/std';
+import { Text } from '@blocksuite/store';
+
+export const calloutToParagraphCommand: Command<
+  {
+    id: string;
+    stopCapturing?: boolean;
+  },
+  {
+    success: boolean;
+  }
+> = (ctx, next) => {
+  const { id, stopCapturing = true } = ctx;
+  const std = ctx.std;
+  const doc = std.store;
+  const model = doc.getBlock(id)?.model;
+
+  if (!model || !matchModels(model, [ParagraphBlockModel])) return false;
+
+  const parent = doc.getParent(model);
+  if (!parent || !matchModels(parent, [CalloutBlockModel])) return false;
+
+  if (stopCapturing) std.store.captureSync();
+
+  // Get current block index in callout
+  const currentIndex = parent.children.indexOf(model);
+  const hasText = model.text && model.text.length > 0;
+
+  // Find previous paragraph block in callout
+  let previousBlock = null;
+  for (let i = currentIndex - 1; i >= 0; i--) {
+    const sibling = parent.children[i];
+    if (matchModels(sibling, [ParagraphBlockModel])) {
+      previousBlock = sibling;
+      break;
+    }
+  }
+
+  if (previousBlock && hasText) {
+    // Clone current text content before any operations to prevent data loss
+    const currentText = model.text || new Text();
+
+    // Get previous block text and merge index
+    const previousText = previousBlock.text || new Text();
+    const mergeIndex = previousText.length;
+
+    // Apply each delta from cloned current text to previous block to preserve formatting
+    previousText.join(currentText);
+
+    // Remove current block after text has been merged
+    doc.deleteBlock(model, {
+      deleteChildren: false,
+    });
+
+    // Focus at merge point in previous block
+    focusTextModel(std, previousBlock.id, mergeIndex);
+  } else if (previousBlock && !hasText) {
+    // Move cursor to end of previous block
+    doc.deleteBlock(model, {
+      deleteChildren: false,
+    });
+
+    const previousText = previousBlock.text || new Text();
+    focusTextModel(std, previousBlock.id, previousText.length);
+  } else {
+    // No previous block, select the entire callout
+    doc.deleteBlock(model, {
+      deleteChildren: false,
+    });
+
+    std.selection.setGroup('note', [
+      std.selection.create(BlockSelection, {
+        blockId: parent.id,
+      }),
+    ]);
+  }
+
+  return next({ success: true });
+};