API: Storage gears_init.js (YUI Library)

# Yahoo! UI Library

### Storage 2.8.1

Yahoo! UI Library > Storage > gears_init.js (source view)
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    // Copyright 2007, Google Inc.
    //
    // Redistribution and use in source and binary forms, with or without
    // modification, are permitted provided that the following conditions are met:
    //
    //  1. Redistributions of source code must retain the above copyright notice,
    //     this list of conditions and the following disclaimer.
    //  2. Redistributions in binary form must reproduce the above copyright notice,
    //     this list of conditions and the following disclaimer in the documentation
    //     and/or other materials provided with the distribution.
    //  3. Neither the name of Google Inc. nor the names of its contributors may be
    //     used to endorse or promote products derived from this software without
    //     specific prior written permission.
    //
    // THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
    // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
    // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
    // EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
    // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
    // OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
    // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
    // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
    // ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    //
    // Sets up google.gears.*, which is *the only* supported way to access Gears.
    //
    // Circumvent this file at your own risk!
    //
    // In the future, Gears may automatically define google.gears.* without this
    // file. Gears may use these objects to transparently fix bugs and compatibility
    // issues. Applications that use the code below will continue to work seamlessly
    // when that happens.

    (function() {
      // We are already defined. Hooray!
      if (window.google && google.gears) {
        return;
      }

      var factory = null;

      // Firefox
      if (typeof GearsFactory != 'undefined') {
        factory = new GearsFactory();
      } else {
        // IE
        try {
          factory = new ActiveXObject('Gears.Factory');
          // privateSetGlobalObject is only required and supported on IE Mobile on
          // WinCE.
          if (factory.getBuildInfo().indexOf('ie_mobile') != -1) {
            factory.privateSetGlobalObject(this);
          }
        } catch (e) {
          // Safari
          if ((typeof navigator.mimeTypes != 'undefined')
               && navigator.mimeTypes["application/x-googlegears"]) {
            factory = document.createElement("object");
            factory.style.display = "none";
            factory.width = 0;
            factory.height = 0;
            factory.type = "application/x-googlegears";
            document.documentElement.appendChild(factory);
          }
        }
      }

      // *Do not* define any objects if Gears is not installed. This mimics the
      // behavior of Gears defining the objects in the future.
      if (!factory) {
        return;
      }

      // Now set up the objects, being careful not to overwrite anything.
      //
      // Note: In Internet Explorer for Windows Mobile, you can't add properties to
      // the window object. However, global objects are automatically added as
      // properties of the window object in all browsers.
      if (!window.google) {
        google = {};
      }

      if (!google.gears) {
        google.gears = {factory: factory};
      }
    })();

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