Enable <adview> tag for packaged apps.

chrome/test/data/extensions/platform_apps/ad_view/ad_network/testsdk.js

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+(function() {
+  "use strict";
+
+  var document = window.document;
+
+  /**
+   * Returns the URL of the ad image.
+   */
+  function getAdUrl(index) {
+    var adPath = "ads/image315.png";
+    var prefixIndex = location.href.lastIndexOf("/");
+    return location.href.substr(0, prefixIndex) + "/" + adPath;
+  }
+
+  var messageSequenceNumber = 0;
+
+  /**
+   * Sends a message to the embedder app.
+   */
+  function sendAppMessage(source, message, publisherData, messageData) {
+    source.postMessage({
+      'sequenceNumber': messageSequenceNumber,
+      'message': message,
+      'publisherData': publisherData,
+      'data': messageData,
+    }, "*");
+
+    messageSequenceNumber++;
+  }
+
+  /**
+   * Called when the img for an ad is loaded into its iframe.
+   */
+  function onAdLoaded(source, publisherData) {
+    // Resize containing iframe to size of image.
+    var iframe = document.getElementById("ad-frame");
+    var img = iframe.contentWindow.document.getElementsByTagName("IMG")[0];
+
+    iframe.style.width = img.width + "px";
+    iframe.style.height = img.height + "px";
+
+    function getCombinedSize(style, propertyNames) {
+      var result = 0;
+      for(var i = 0; i < propertyNames.length; i++) {
+        var value = style.getPropertyValue(propertyNames[i]);
+        result += parseFloat(value.substr(0, value.indexOf("px")));
+      }
+      return result;
+    }
+
+    // Size of ad = size of document body + margins.
+    var style = document.defaultView.getComputedStyle(document.body, '');
+    var adHeight =
+      getCombinedSize(style, ['height', 'margin-top', 'margin-bottom']);
+    var adWidth =
+      getCombinedSize(style, ['width', 'margin-left', 'margin-right']);
+
+    var adRect = {
+      height: adHeight + "px",
+      width: adWidth + "px",
+    };
+
+    sendAppMessage(source, "ad-displayed", publisherData, {
+      'adSize': {
+        width: adRect.width,
+        height: adRect.height
+      }});
+
+    img.onclick = function() {
+      sendAppMessage(source, "ad-clicked", publisherData);
+    };
+  }
+
+  /**
+   * Displays the ad image in the ad iframe.
+   */
+  function displayAd(source, publisherData) {
+    // Remove temporary message since we are about to display an add.
+    var tempDiv = document.getElementById("temp-display");
+    if (tempDiv) {
+      tempDiv.parentNode.removeChild(tempDiv);
+    }
+
+    // Load image in iframe.
+    var iframe = document.getElementById("ad-frame");
+    if (iframe.contentWindow.document.body.firstChild == null) {
+      var img = iframe.contentWindow.document.createElement("img");
+      iframe.contentWindow.document.body.appendChild(img);
+    }
+    var img = iframe.contentWindow.document.body.firstChild;
+    img.onload = function() { onAdLoaded(source, publisherData); };
+    img.src = getAdUrl();
+    iframe.style.visibility = "visible";
+  }
+
+  /**
+   * Dispatches |appMessage| according to message value.
+   */
+  function processAppMessage(source, appMessage) {
+    if (appMessage.message == "display-ad") {
+      displayAd(source, appMessage.publisherData);
+    }
+    else if (appMessage.message == "display-first-ad") {
+      displayAd(source, appMessage.publisherData);
+    }
+    else if (appMessage.message == "onloadcommit") {
+      sendAppMessage(source, "onloadcommit-ack");
+    }
+  }
+
+  /**
+   * Handles "message" event.
+   */
+  function onPostMessage(eventMessage) {
+    processAppMessage(eventMessage.source, eventMessage.data);
+  }
+
+  /**
+   * Handles "DOMContentLoaded" event.
+   */
+  function onDocumentReady() {
+    document.getElementById("url").textContent = window.location;
+  }
+
+  //
+  // Register global event listeners.
+  //
+  window.addEventListener("message", onPostMessage, false);
+  document.addEventListener('DOMContentLoaded', onDocumentReady, false);
+
+})();