chrome/test/data/extensions/api_test/page_action/hash_change/background.js

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // This makes sure we only enable the page action once per tab.
   6 var hasEnabled = {};
   7
   8 chrome.extension.onRequest.addListener(function(request, sender) {
   9   if (request.msg == "feedIcon") {
  10     console.log('url: ' + sender.tab.url);
  11
  12     if (!hasEnabled[sender.tab.id]) {
  13       console.log('Enabling for ' + sender.tab.id);
  14
  15       // We have received a list of feed urls found on the page.
  16       // Enable the page action icon.
  17       chrome.pageAction.setTitle({ tabId: sender.tab.id,
  18                                    title: "Page action..."});
  19       chrome.pageAction.show(sender.tab.id);
  20       hasEnabled[sender.tab.id] = true;
  21       hasEnabledLastTabId = sender.tab.id;
  22     } else {
  23       console.log('We are not doing this more than once (for ' +
  24                   sender.tab.id + ')');
  25     }
  26   }
  27 });