feat: add ordered list cycle command

packages/core/src/extensions/list.test.ts

@@ -120,6 +120,55 @@ describe('commands', () => {
     fixture.editor.commands.cycleCheckableList()
     expect(docToMarkdown(fixture.doc)).toBe('+ [ ] outer\n  - [ ] inner\n')
   })
+
+  it('cycleOrderedList cycles plain content through bullet, ordered, and text', () => {
+    using fixture = setupFixture()
+    const { n } = fixture
+    fixture.set(n.doc(n.paragraph('todo<a>')))
+
+    expect(docToMarkdown(fixture.doc).trim()).toMatchInlineSnapshot(`"todo"`)
+    fixture.editor.commands.cycleOrderedList()
+    expect(docToMarkdown(fixture.doc).trim()).toMatchInlineSnapshot(`"- todo"`)
+    fixture.editor.commands.cycleOrderedList()
+    expect(docToMarkdown(fixture.doc).trim()).toMatchInlineSnapshot(`"1. todo"`)
+    fixture.editor.commands.cycleOrderedList()
+    expect(docToMarkdown(fixture.doc).trim()).toMatchInlineSnapshot(`"todo"`)
+    fixture.editor.commands.cycleOrderedList()
+    expect(docToMarkdown(fixture.doc).trim()).toMatchInlineSnapshot(`"- todo"`)
+  })
+
+  it('cycleOrderedList converts a task to a plain bullet first', () => {
+    using fixture = setupFixture()
+    const { n } = fixture
+    fixture.set(n.doc(n.list({ kind: 'task', marker: '+', checked: true }, n.paragraph('done<a>'))))
+
+    fixture.editor.commands.cycleOrderedList()
+
+    expect(fixture.doc.child(0).attrs).toMatchObject({
+      kind: 'bullet',
+      checked: false,
+    })
+    expect(docToMarkdown(fixture.doc)).toBe('- done\n')
+  })
+
+  it('cycleOrderedList changes only the closest nested list', () => {
+    using fixture = setupFixture()
+    const { n } = fixture
+    fixture.set(
+      n.doc(
+        n.list(
+          { kind: 'bullet' },
+          n.paragraph('outer'),
+          n.list({ kind: 'bullet' }, n.paragraph('inner<a>')),
+        ),
+      ),
+    )
+
+    fixture.editor.commands.cycleOrderedList()
+    expect(docToMarkdown(fixture.doc)).toBe('- outer\n  1. inner\n')
+    fixture.editor.commands.cycleOrderedList()
+    expect(docToMarkdown(fixture.doc)).toBe('- outer\n\n  inner\n')
+  })
 })
 
 describe('keymap', () => {

packages/core/src/extensions/list.ts

@@ -20,8 +20,8 @@ import {
   type ListAttrs,
 } from '@prosekit/extensions/list'
 import type { ProseMirrorNode } from '@prosekit/pm/model'
-import { Plugin } from '@prosekit/pm/state'
 import type { Command, EditorState } from '@prosekit/pm/state'
+import { Plugin } from '@prosekit/pm/state'
 import {
   createListRenderingPlugin,
   createSafariInputMethodWorkaroundPlugin,
@@ -300,8 +300,11 @@ function getListAttrsAtSelection(state: EditorState): MeowdownListAttrs | null {
 }
 
 /**
- * Cycle the selected block between square and circle checkbox tasks. Non-task
- * content becomes an unchecked square task; shape changes preserve checked state.
+ * Cycle the selected block between square and circle checkbox tasks.
+ *
+ * - A square task becomes a circle task, keeping its checked state;
+ * - A circle task becomes a square task, keeping its checked state;
+ * - Other content becomes an unchecked square task.
  */
 function cycleCheckableList(): Command {
   return (state, dispatch, view) => {
@@ -316,11 +319,35 @@ function cycleCheckableList(): Command {
   }
 }
 
-function defineTaskCommands() {
+/**
+ * Cycle the selected block between a bullet list, an ordered list, and no list.
+ *
+ * - A bullet list becomes an ordered list;
+ * - An ordered list unwraps;
+ * - Other content, including a task, becomes a bullet list.
+ */
+function cycleOrderedList(): Command {
+  return (state, dispatch, view) => {
+    const attrs = getListAttrsAtSelection(state)
+    const next: MeowdownListAttrs =
+      attrs?.kind === 'bullet' || attrs?.kind === 'ordered'
+        ? { kind: 'ordered', marker: null, checked: false, collapsed: false }
+        : { kind: 'bullet', marker: null, checked: false, collapsed: false }
+    return toggleList<MeowdownListAttrs>(next)(state, dispatch, view)
+  }
+}
+
+function toggleListCollapsed(): Command {
+  return createToggleCollapsedCommand({ isToggleable: isCollapsibleBullet })
+}
+
+function defineMeowdownListCommands() {
   return defineCommands({
     cycleCheckableList,
+    cycleOrderedList,
     wrapInCircleTask,
     wrapInSquareTask,
+    toggleListCollapsed,
   })
 }
 
@@ -413,12 +440,6 @@ function defineMeowdownListPlugins(): PlainExtension {
   ])
 }
 
-function defineCollapseCommands() {
-  return defineCommands({
-    toggleListCollapsed: () => createToggleCollapsedCommand({ isToggleable: isCollapsibleBullet }),
-  })
-}
-
 function defineMeowdownListKeymap(): PlainExtension {
   return defineKeymap({
     'Mod-Enter': rotateSquareTask(),
@@ -450,7 +471,6 @@ export function defineMeowdownList() {
     defineListMarkerAttr(),
     defineListTaskMarkerAttr(),
     defineListMarkerGapAttr(),
-    defineTaskCommands(),
-    defineCollapseCommands(),
+    defineMeowdownListCommands(),
   )
 }