From 3e954e655ddcc54892fe9ee6a363896812324412 Mon Sep 17 00:00:00 2001
From: fantasticit <fantasticit@163.com>
Date: Fri, 25 Nov 2022 15:21:10 +0800
Subject: [PATCH] close #208

---
 .../src/tiptap/core/extensions/task-list.ts   | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/packages/client/src/tiptap/core/extensions/task-list.ts b/packages/client/src/tiptap/core/extensions/task-list.ts
index 04743e4b..0cb76be0 100644
--- a/packages/client/src/tiptap/core/extensions/task-list.ts
+++ b/packages/client/src/tiptap/core/extensions/task-list.ts
@@ -1,4 +1,7 @@
+import { getNodeType } from '@tiptap/core';
 import { TaskList as BuiltInTaskList } from '@tiptap/extension-task-list';
+import { liftListItem } from 'prosemirror-schema-list';
+import { findParentNodeClosestToPos } from 'prosemirror-utils';
 import { PARSE_HTML_PRIORITY_HIGHEST } from 'tiptap/core/constants';
 
 export const TaskList = BuiltInTaskList.extend({
@@ -10,4 +13,23 @@ export const TaskList = BuiltInTaskList.extend({
       },
     ];
   },
+
+  addKeyboardShortcuts() {
+    return {
+      ...this.parent?.(),
+      Backspace: ({ editor }) => {
+        const { selection } = editor.state;
+        const { $from } = selection;
+        const maybeTask = findParentNodeClosestToPos($from, (node) => node.type.name === this.name);
+
+        if (maybeTask && maybeTask.node.childCount === 1 && !maybeTask.node.textContent) {
+          const name = this.editor.can().liftListItem('taskItem') ? 'taskItem' : 'listItem';
+          const type = getNodeType(name, editor.view.state.schema);
+          return liftListItem(type)(editor.view.state, editor.view.dispatch);
+        }
+
+        return false;
+      },
+    };
+  },
 });