fix: restore native text context menu

tests/unit/context-menu.test.ts

@@ -0,0 +1,120 @@
+import { describe, expect, it } from 'vitest';
+import {
+  createTextContextMenuTemplate,
+  type TextContextMenuContext,
+} from '@electron/main/context-menu';
+
+type ContextOverrides = {
+  isEditable?: boolean;
+  selectionText?: string;
+  editFlags?: Partial<Electron.EditFlags>;
+};
+
+function context(overrides: ContextOverrides = {}): TextContextMenuContext {
+  return {
+    isEditable: overrides.isEditable ?? false,
+    selectionText: overrides.selectionText ?? '',
+    editFlags: {
+      canUndo: false,
+      canRedo: false,
+      canCut: false,
+      canCopy: false,
+      canPaste: false,
+      canDelete: false,
+      canSelectAll: false,
+      canEditRichly: false,
+      ...overrides.editFlags,
+    },
+  };
+}
+
+function enabledByRole(template: Electron.MenuItemConstructorOptions[] | null) {
+  return Object.fromEntries(
+    (template ?? [])
+      .filter((item) => item.role)
+      .map((item) => [item.role, item.enabled]),
+  );
+}
+
+describe('text context menu', () => {
+  it('does not create a menu for ordinary non-editable content', () => {
+    expect(createTextContextMenuTemplate(context())).toBeNull();
+  });
+
+  it('allows paste and select all in an editable control without a selection', () => {
+    const template = createTextContextMenuTemplate(context({
+      isEditable: true,
+      editFlags: {
+        canPaste: true,
+        canSelectAll: true,
+      },
+    }));
+
+    expect(template?.map((item) => item.label ?? item.type)).toEqual([
+      '剪切',
+      '复制',
+      '粘贴',
+      'separator',
+      '全选',
+    ]);
+    expect(enabledByRole(template)).toEqual({
+      cut: false,
+      copy: false,
+      paste: true,
+      selectAll: true,
+    });
+  });
+
+  it('enables every requested action for an editable selection when supported', () => {
+    const template = createTextContextMenuTemplate(context({
+      isEditable: true,
+      selectionText: 'Makelore',
+      editFlags: {
+        canCut: true,
+        canCopy: true,
+        canPaste: true,
+        canSelectAll: true,
+      },
+    }));
+
+    expect(enabledByRole(template)).toEqual({
+      cut: true,
+      copy: true,
+      paste: true,
+      selectAll: true,
+    });
+  });
+
+  it('keeps cut and paste disabled for a read-only selection', () => {
+    const template = createTextContextMenuTemplate(context({
+      selectionText: 'Makelore',
+      editFlags: {
+        canCut: true,
+        canCopy: true,
+        canPaste: true,
+        canSelectAll: true,
+      },
+    }));
+
+    expect(enabledByRole(template)).toEqual({
+      cut: false,
+      copy: true,
+      paste: false,
+      selectAll: true,
+    });
+  });
+
+  it('respects disabled renderer editing capabilities', () => {
+    const template = createTextContextMenuTemplate(context({
+      isEditable: true,
+      selectionText: 'Makelore',
+    }));
+
+    expect(enabledByRole(template)).toEqual({
+      cut: false,
+      copy: false,
+      paste: false,
+      selectAll: false,
+    });
+  });
+});