go-back-with-backspace/pages/options.js

// Copyright 2016 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Initialize the page.
function init() {
  LoadInternationalizedStrings();

  var blacklist = document.getElementById('blacklist');
  var checkbox = document.getElementById('disableInApplets');
  var whitelist = document.getElementById('whitelist');

  // Configure the textboxes, allowing 200 characters for JSON serialization
  // and key length.
  blacklist.maxlength = chrome.storage.sync.QUOTA_BYTES_PER_ITEM - 200;
  whitelist.maxlength = chrome.storage.sync.QUOTA_BYTES_PER_ITEM - 200;

  // Set event handlers.
  document.getElementById('done_button').onclick = function() {
    chrome.storage.sync.set({
      // Split the lists into arrays at whitespace before saving.
      blacklist:
          document.getElementById('blacklist').value.split(/\s+/),
      disableInApplets: document.getElementById('disableInApplets').checked,
      whitelist:
          document.getElementById('whitelist').value.split(/\s+/)
    }, function() {
      // One easy way to force an error for testing is to change "sync" to
      // "managed" in the chrome.storage.sync.set() call above.
      if (chrome.runtime.lastError) {
        document.getElementById('error').textContent =
            chrome.i18n.getMessage('errorSaving',
                                   chrome.runtime.lastError.message);
      } else {
        window.close();
      }
    });
  };

  document.getElementById('cancel_button').onclick = function() {
    window.close();
  };

  document.getElementById('report_page').onclick = function() {
    reportPage();
  };

  // Load saved settings into the form fields.
  chrome.storage.sync.get({
    blacklist: [],
    disableInApplets: true,
    whitelist: []
  }, function(items) {
    blacklist.value = items.blacklist.join('\n');
    checkbox.checked = items.disableInApplets;
    whitelist.value = items.whitelist.join('\n');
  });
}

window.addEventListener('load', init, false);