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/paragraph/src/markdown.ts

@@ -0,0 +1,74 @@
+import {
+  ListBlockModel,
+  ParagraphBlockModel,
+  ParagraphBlockSchema,
+  type ParagraphType,
+} from '@blocksuite/affine-model';
+import { focusTextModel } from '@blocksuite/affine-rich-text';
+import type { AffineTextAttributes } from '@blocksuite/affine-shared/types';
+import { matchModels } from '@blocksuite/affine-shared/utils';
+import type { BlockComponent } from '@blocksuite/std';
+import { InlineMarkdownExtension } from '@blocksuite/std/inline';
+
+export const ParagraphMarkdownExtension =
+  InlineMarkdownExtension<AffineTextAttributes>({
+    name: 'heading',
+    pattern: /^((#{1,6})|(>))\s$/,
+    action: ({ inlineEditor, pattern, inlineRange, prefixText }) => {
+      if (inlineEditor.yTextString.slice(0, inlineRange.index).includes('\n')) {
+        return;
+      }
+
+      const match = prefixText.match(pattern);
+      if (!match) return;
+
+      const type = (
+        match[2] ? `h${match[2].length}` : 'quote'
+      ) as ParagraphType;
+
+      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]) &&
+        matchModels(model, [ListBlockModel])
+      ) {
+        const parent = store.getParent(model);
+        if (!parent) return;
+        const index = parent.children.indexOf(model);
+
+        store.captureSync();
+        inlineEditor.deleteText({
+          index: 0,
+          length: inlineRange.index,
+        });
+        store.deleteBlock(model, { deleteChildren: false });
+        const id = store.addBlock<ParagraphBlockModel>(
+          ParagraphBlockSchema.model.flavour,
+          {
+            type: type,
+            text: model.text?.clone(),
+            children: model.children,
+          },
+          parent,
+          index
+        );
+
+        focusTextModel(std, id);
+      } else if (
+        matchModels(model, [ParagraphBlockModel]) &&
+        model.props.type !== type
+      ) {
+        store.captureSync();
+        inlineEditor.deleteText({
+          index: 0,
+          length: inlineRange.index,
+        });
+        store.updateBlock(model, { type });
+        focusTextModel(std, model.id);
+      }
+    },
+  });

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

@@ -7,7 +7,6 @@ import {
 import {
   focusTextModel,
   getInlineEditorByModel,
-  markdownInput,
 } from '@blocksuite/affine-rich-text';
 import {
   calculateCollapsedSiblings,
@@ -148,10 +147,6 @@ export const ParagraphKeymapExtension = KeymapExtension(
 
         raw.preventDefault();
 
-        if (markdownInput(std, model.id)) {
-          return true;
-        }
-
         if (model.props.type.startsWith('h') && model.props.collapsed) {
           const parent = store.getParent(model);
           if (!parent) return true;
@@ -199,20 +194,6 @@ export const ParagraphKeymapExtension = KeymapExtension(
         event.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;
-      },
       Tab: ctx => {
         const [success] = std.command
           .chain()

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

@@ -2,9 +2,13 @@ import {
   type ViewExtensionContext,
   ViewExtensionProvider,
 } from '@blocksuite/affine-ext-loader';
+import { ParagraphBlockModel } from '@blocksuite/affine-model';
 import { BlockViewExtension, FlavourExtension } from '@blocksuite/std';
 import { literal } from 'lit/static-html.js';
+import { z } from 'zod';
 
+import { effects } from './effects';
+import { ParagraphMarkdownExtension } from './markdown.js';
 import { ParagraphBlockConfigExtension } from './paragraph-block-config.js';
 import {
   ParagraphKeymapExtension,
@@ -22,11 +26,6 @@ const placeholders = {
   quote: '',
 };
 
-import { ParagraphBlockModel } from '@blocksuite/affine-model';
-import { z } from 'zod';
-
-import { effects } from './effects';
-
 const optionsSchema = z.object({
   getPlaceholder: z.optional(
     z.function().args(z.instanceof(ParagraphBlockModel)).returns(z.string())
@@ -61,6 +60,7 @@ export class ParagraphViewExtension extends ViewExtensionProvider<
       ParagraphBlockConfigExtension({
         getPlaceholder,
       }),
+      ParagraphMarkdownExtension,
     ]);
   }
 }