chrome-extensions-samples/api-samples/contextMenus/basic/sample.js

// Copyright 2023 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// A generic onclick callback function.
chrome.contextMenus.onClicked.addListener(genericOnClick);

// A generic onclick callback function.
function genericOnClick(info) {
  switch (info.menuItemId) {
    case 'radio':
      // Radio item function
      console.log('Radio item clicked. Status:', info.checked);
      break;
    case 'checkbox':
      // Checkbox item function
      console.log('Checkbox item clicked. Status:', info.checked);
      break;
    default:
      // Standard context menu item function
      console.log('Standard context menu item clicked.');
  }
}
chrome.runtime.onInstalled.addListener(function () {
  // Create one test item for each context type.
  let contexts = [
    'page',
    'selection',
    'link',
    'editable',
    'image',
    'video',
    'audio'
  ];
  for (let i = 0; i < contexts.length; i++) {
    let context = contexts[i];
    let title = "Test '" + context + "' menu item";
    chrome.contextMenus.create({
      title: title,
      contexts: [context],
      id: context
    });
  }

  // Create a parent item and two children.
  let parent = chrome.contextMenus.create({
    title: 'Test parent item',
    id: 'parent'
  });
  chrome.contextMenus.create({
    title: 'Child 1',
    parentId: parent,
    id: 'child1'
  });
  chrome.contextMenus.create({
    title: 'Child 2',
    parentId: parent,
    id: 'child2'
  });

  // Create a radio item.
  chrome.contextMenus.create({
    title: 'radio',
    type: 'radio',
    id: 'radio'
  });

  // Create a checkbox item.
  chrome.contextMenus.create({
    title: 'checkbox',
    type: 'checkbox',
    id: 'checkbox'
  });

  // Intentionally create an invalid item, to show off error checking in the
  // create callback.
  chrome.contextMenus.create(
    { title: 'Oops', parentId: 999, id: 'errorItem' },
    function () {
      if (chrome.runtime.lastError) {
        console.log('Got expected error: ' + chrome.runtime.lastError.message);
      }
    }
  );
});