Custom Nested menu items

A nested menu item is a menu item with a submenu. Registering a submenu this way allows it to be reused in menubar menus and toolbar button menus without having to define the submenu twice. The submenu can contain any combination of basic menu items and toggle menu items.

Name Value Requirement Description

text

string

optional

Text to display if no icon is found.

icon

string

optional

Name of the icon to be displayed. Must correspond to an icon: in the icon pack, in a custom icon pack, or added using the addIcon API.

value

string

optional

A value to associate with the menu item.

onSetup

(api) => (api) => void

optional

default: () => () => {} - Function invoked when the menu item is rendered, each time its menu is opened. For details, see: Using onSetup.

getSubmenuItems

() => string or MenuItem[]

required

Function invoked when the menu item is clicked to open its submenu. Must return either a space separated string of registered menu names or an array of basic, toggle or nested menu items specifications.

shortcut

string

optional

Text to display in the shortcut label. To register a shortcut, see: Add custom shortcuts to TinyMCE.

API

Name Value Description

isEnabled

() => boolean

Checks if the menu item is enabled.

setEnabled

(state: boolean) => void

Sets the menu item’s enabled state.

Example: creating a nested menu item

tinymce.init({
  selector: 'textarea',
  menu: {
    custom: { title: 'Custom Menu', items: 'undo redo nesteditem' }
  },
  menubar: 'file edit custom',
  setup: (editor) => {
    editor.ui.registry.addNestedMenuItem('nesteditem', {
      text: 'My nested menu item',
      getSubmenuItems: () => [{
        type: 'menuitem',
        text: 'My submenu item',
        onAction: () => alert('Submenu item clicked')
      }]
    });
  }
});

Using onSetup

onSetup is a complex property. It takes a function that is passed the component’s API and should return a callback that is passed the component’s API and returns nothing. This occurs because onSetup runs whenever the component is rendered, and the returned callback is executed when the component is destroyed. This is essentially an onTeardown handler, and can be used to unbind events and callbacks.

To clarify, in code onSetup may look like this:

onSetup: (api) => {
  // Do something here on component render, like set component properties or bind an event listener

  return (api) => {
    // Do something here on teardown, like unbind an event listener
  };
};

To bind a callback function to an editor event use editor.on(eventName, callback). To unbind an event listener use editor.off(eventName, callback). Any event listeners should be unbound in the teardown callback. The only editor event which does not need to be unbound is init e.g. editor.on('init', callback).

  • The callback function for editor.off() should be the same function passed to editor.on(). For example, if a editorEventCallback function is bound to the NodeChange event when the button is created, onSetup should return (api) => editor.off('NodeChange', editorEventCallback).

  • If onSetup does not have any event listeners or only listens to the init event, onSetup can return an empty function e.g. return () => {};.