silvolu/gist:3296667

## gistfile1.xml
<?xml version="1.0" encoding="UTF-8" ?>
<Module>
<!-- 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
 *
 * http://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
-->
  <ModulePrefs title="Hangout Apps Visibility">
    <Require feature="rpc"/>
    <Require feature="views"/>
  </ModulePrefs>
  <Content type="html">
    <![CDATA[

    <html>
      <body>
        <script src="//talkgadget.google.com/hangouts/_/api/hangout.js?v=1.1"></script>
        <script type="text/javascript">
          function init() {
            // When API is ready...
            gapi.hangout.onApiReady.add(function() {
              gapi.hangout.onAppVisible.add(appNotification);
              gapi.hangout.layout.onChatPaneVisible.add(chatPaneNotification);
            });
          }

          function appNotification(evt) {
            var message = evt.isAppVisible ?
                "The app is visible" :
                "The app is not visible";
            displayMessage(message);
          }

          function chatPaneNotification(evt) {
            var message = evt.isChatPaneVisible ?
                "The chat pane is visible, any running extensions have been hidden" :
                "The chat pane is not visible";
            displayMessage(message);
          }

          function displayMessage(message) {
            console.log(message);
            gapi.hangout.layout.displayNotice(message);
          }

          // Wait for gadget to load.
          gadgets.util.registerOnLoadHandler(init);
        </script>
      </body>
    </html>

    ]]>
  </Content>
</Module>
	<?xml version="1.0" encoding="UTF-8" ?>
	<Module>
	<!-- 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
	*
	* http://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
	-->
	<ModulePrefs title="Hangout Apps Visibility">
	<Require feature="rpc"/>
	<Require feature="views"/>
	</ModulePrefs>
	<Content type="html">
	<![CDATA[

	<html>
	<body>
	<script src="//talkgadget.google.com/hangouts/_/api/hangout.js?v=1.1"></script>
	<script type="text/javascript">
	function init() {
	// When API is ready...
	gapi.hangout.onApiReady.add(function() {
	gapi.hangout.onAppVisible.add(appNotification);
	gapi.hangout.layout.onChatPaneVisible.add(chatPaneNotification);
	});
	}

	function appNotification(evt) {
	var message = evt.isAppVisible ?
	"The app is visible" :
	"The app is not visible";
	displayMessage(message);
	}

	function chatPaneNotification(evt) {
	var message = evt.isChatPaneVisible ?
	"The chat pane is visible, any running extensions have been hidden" :
	"The chat pane is not visible";
	displayMessage(message);
	}

	function displayMessage(message) {
	console.log(message);
	gapi.hangout.layout.displayNotice(message);
	}

	// Wait for gadget to load.
	gadgets.util.registerOnLoadHandler(init);
	</script>
	</body>
	</html>

	]]>
	</Content>
	</Module>