fix: list items require multiple backspace presses to delete (#6408)

#### What type of PR is this?

/kind bug
/area editor
/milestone 2.18.x

#### What this PR does / why we need it:

目前当编辑器中列表内容为空时，需要按退格键多次才能删除掉此列表内容。

本 PR 在执行单行删除逻辑之前，会检查列表是否处于活动状态，如果是则不再执行单行删除的逻辑。列表会执行 ListKeyMap 相关快捷键。

#### How to test it?

1. 在默认富文本键入一个列表。
2. 使用退格键删除这个列表。
3. 查看是否可以一次就删除。

#### Which issue(s) this PR fixes:

Fixes #6389 

#### Does this PR introduce a user-facing change?
```release-note
修复默认编辑器中列表项需要按多次退格键才可以删除的问题
```

ui/packages/editor/src/extensions/indent/index.ts

@@ -7,6 +7,7 @@ import {
   type KeyboardShortcutCommand,
 } from "@/tiptap";
 import { TextSelection, Transaction } from "@/tiptap/pm";
+import { isListActive } from "@/utils/isListActive";
 
 declare module "@/tiptap" {
   interface Commands<ReturnType> {
@@ -222,14 +223,6 @@ const isTextIndent = (tr: Transaction, currNodePos: number) => {
   return false;
 };
 
-const isListActive = (editor: CoreEditor) => {
-  return (
-    editor.isActive("bulletList") ||
-    editor.isActive("orderedList") ||
-    editor.isActive("taskList")
-  );
-};
-
 const isFilterActive = (editor: CoreEditor) => {
   return editor.isActive("table") || editor.isActive("columns");
 };

ui/packages/editor/src/extensions/paragraph/index.ts

@@ -2,6 +2,7 @@ import ToolbarItem from "@/components/toolbar/ToolbarItem.vue";
 import ToolbarSubItem from "@/components/toolbar/ToolbarSubItem.vue";
 import { i18n } from "@/locales";
 import {
+  CoreEditor,
   EditorState,
   ResolvedPos,
   TextSelection,
@@ -11,6 +12,7 @@ import {
 } from "@/tiptap";
 import type { ExtensionOptions, ToolbarItem as TypeToolbarItem } from "@/types";
 import { deleteNodeByPos } from "@/utils";
+import { isListActive } from "@/utils/isListActive";
 import { isEmpty } from "@/utils/isNodeEmpty";
 import type { ParagraphOptions } from "@tiptap/extension-paragraph";
 import TiptapParagraph from "@tiptap/extension-paragraph";
@@ -97,15 +99,15 @@ const Paragraph = TiptapParagraph.extend<ExtensionOptions & ParagraphOptions>({
 
   addKeyboardShortcuts() {
     return {
-      Backspace: ({ editor }) => {
+      Backspace: ({ editor }: { editor: CoreEditor }) => {
         const { state, view } = editor;
         const { selection } = state;
 
-        if (
+        if (isListActive(editor) || !isActive(state, Paragraph.name)) {
-          !isActive(state, Paragraph.name) ||
+          return false;
-          !(selection instanceof TextSelection) ||
+        }
-          !selection.empty
+
-        ) {
+        if (!(selection instanceof TextSelection) || !selection.empty) {
           return false;
         }
 

ui/packages/editor/src/utils/isListActive.ts

@@ -0,0 +1,42 @@
+import {
+  callOrReturn,
+  CoreEditor,
+  getExtensionField,
+  isActive,
+  type NodeConfig,
+} from "@/tiptap";
+
+/**
+ * Check if a list is active
+ *
+ * @param state - The state of the editor
+ * @returns Whether a list is active
+ * @example
+ * ```ts
+ * const isActive = isListActive(editor.state);
+ * ```
+ **/
+export const isListActive = (editor: CoreEditor) => {
+  const extensions = editor.extensionManager.extensions;
+  const listExtensions = extensions.filter((extension) => {
+    const context = {
+      name: extension.name,
+      options: extension.options,
+      storage: extension.storage,
+    };
+
+    const group = callOrReturn(
+      getExtensionField<NodeConfig["group"]>(extension, "group", context)
+    );
+
+    if (typeof group !== "string") {
+      return false;
+    }
+
+    return group.split(" ").includes("list");
+  });
+
+  return listExtensions.some((extension) => {
+    return isActive(editor.state, extension.name);
+  });
+};