fix(editor): support markdown transform when using IME (#12778)

Fix #12284 
Close
[BS-3517](https://linear.app/affine-design/issue/BS-3517/微软新注音输入法无法使用markdown语法)

This PR refactor the markdown transform during inputting, including:
- Transfrom markdown syntax input in `inlineEditor.slots.inputting`,
where we can detect the space character inputed by IME like Microsoft
Bopomofo, but `keydown` event can't.
- Remove `markdown-input.ts` which was used in `KeymapExtension` of
paragraph, and refactor with `InlineMarkdownExtension`
- Adjust existing `InlineMarkdownExtension` since the space is included
in text.
- Add two `InlineMarkdownExtension` for paragraph and list to impl
Heading1-6, number, bullet, to-do list conversion.

Other changes:
- Improve type hint for parameter of `store.addBlock`

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

## Summary by CodeRabbit

- **New Features**
- Added markdown shortcuts for creating code blocks and dividers in the
rich text editor.
- Introduced enhanced paragraph markdown support for headings and
blockquotes with inline markdown patterns.
- Integrated new list markdown extension supporting numbered, bulleted,
and todo lists with checked states.

- **Improvements**
- Updated markdown formatting patterns to require trailing spaces for
links, LaTeX, and inline styles, improving detection accuracy.
- Markdown transformations now respond to input events instead of
keydown for smoother editing experience.
- Added focus management after markdown transformations to maintain
seamless editing flow.

- **Bug Fixes**
- Removed unnecessary prevention of default behavior on space and
shift-space key presses in list and paragraph editors.

- **Refactor**
- Enhanced event handling and typing for editor input events, improving
reliability and maintainability.
- Refined internal prefix text extraction logic for markdown processing.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

blocksuite/affine/blocks/list/src/list-keymap.ts

@@ -1,6 +1,5 @@
 import { textKeymap } from '@blocksuite/affine-inline-preset';
 import { ListBlockSchema } from '@blocksuite/affine-model';
-import { markdownInput } from '@blocksuite/affine-rich-text';
 import { getSelectedModelsCommand } from '@blocksuite/affine-shared/commands';
 import { IS_MAC } from '@blocksuite/global/env';
 import { KeymapExtension, TextSelection } from '@blocksuite/std';
@@ -125,20 +124,6 @@ export const ListKeymapExtension = KeymapExtension(
         ctx.get('keyboardState').raw.preventDefault();
         return true;
       },
-      Space: ctx => {
-        if (!markdownInput(std)) {
-          return;
-        }
-        ctx.get('keyboardState').raw.preventDefault();
-        return true;
-      },
-      'Shift-Space': ctx => {
-        if (!markdownInput(std)) {
-          return;
-        }
-        ctx.get('keyboardState').raw.preventDefault();
-        return true;
-      },
     };
   },
   {

blocksuite/affine/blocks/list/src/markdown.ts

@@ -0,0 +1,91 @@
+import {
+  type ListBlockModel,
+  ListBlockSchema,
+  type ListType,
+  ParagraphBlockModel,
+} from '@blocksuite/affine-model';
+import { focusTextModel } from '@blocksuite/affine-rich-text';
+import type { AffineTextAttributes } from '@blocksuite/affine-shared/types';
+import { matchModels, toNumberedList } from '@blocksuite/affine-shared/utils';
+import type { BlockComponent } from '@blocksuite/std';
+import { InlineMarkdownExtension } from '@blocksuite/std/inline';
+
+export const ListMarkdownExtension =
+  InlineMarkdownExtension<AffineTextAttributes>({
+    name: 'list',
+    // group 2: number
+    // group 3: bullet
+    // group 4: bullet
+    // group 5: todo
+    // group 6: todo checked
+    pattern: /^((\d+\.)|(-)|(\*)|(\[ ?\])|(\[x\]))\s$/,
+    action: ({ inlineEditor, pattern, inlineRange, prefixText }) => {
+      if (inlineEditor.yTextString.slice(0, inlineRange.index).includes('\n')) {
+        return;
+      }
+
+      const match = prefixText.match(pattern);
+      if (!match) return;
+
+      let type: ListType;
+
+      if (match[2]) {
+        type = 'numbered';
+      } else if (match[3] || match[4]) {
+        type = 'bulleted';
+      } else if (match[5] || match[6]) {
+        type = 'todo';
+      } else {
+        return;
+      }
+
+      const checked = match[6] !== undefined;
+
+      if (!inlineEditor.rootElement) return;
+      const blockComponent =
+        inlineEditor.rootElement.closest<BlockComponent>('[data-block-id]');
+      if (!blockComponent) return;
+
+      const { model, std, store } = blockComponent;
+      if (!matchModels(model, [ParagraphBlockModel])) return;
+
+      if (type !== 'numbered') {
+        const parent = store.getParent(model);
+        if (!parent) return;
+        const index = parent.children.indexOf(model);
+
+        store.captureSync();
+        inlineEditor.deleteText({
+          index: 0,
+          length: inlineRange.index,
+        });
+        const id = store.addBlock<ListBlockModel>(
+          ListBlockSchema.model.flavour,
+          {
+            type: type,
+            text: model.text?.clone(),
+            children: model.children,
+            ...(type === 'todo' ? { checked } : {}),
+          },
+          parent,
+          index
+        );
+        store.deleteBlock(model, { deleteChildren: false });
+        focusTextModel(std, id);
+      } else {
+        let order = parseInt(match[2]);
+        if (!Number.isInteger(order)) order = 1;
+
+        store.captureSync();
+        inlineEditor.deleteText({
+          index: 0,
+          length: inlineRange.index,
+        });
+
+        const id = toNumberedList(std, model, order);
+        if (!id) return;
+
+        focusTextModel(std, id);
+      }
+    },
+  });

blocksuite/affine/blocks/list/src/view.ts

@@ -7,6 +7,7 @@ import { literal } from 'lit/static-html.js';
 
 import { effects } from './effects.js';
 import { ListKeymapExtension, ListTextKeymapExtension } from './list-keymap.js';
+import { ListMarkdownExtension } from './markdown.js';
 
 export class ListViewExtension extends ViewExtensionProvider {
   override name = 'affine-list-block';
@@ -23,6 +24,7 @@ export class ListViewExtension extends ViewExtensionProvider {
       BlockViewExtension('affine:list', literal`affine-list`),
       ListKeymapExtension,
       ListTextKeymapExtension,
+      ListMarkdownExtension,
     ]);
   }
 }