1 files changed, 66 insertions, 0 deletions
diff --git a/dom/browser-element/mochitest/browserElement_GetContentDimensions.js b/dom/browser-element/mochitest/browserElement_GetContentDimensions.js
new file mode 100644
index 000000000..722c42b77
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_GetContentDimensions.js
@@ -0,0 +1,66 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 757859 - Test the getContentDimensions functionality of mozbrowser
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+var resizeContent = function() {
+  var innerBox = content.document.getElementById('abox');
+  innerBox.style.width = '800px';
+  innerBox.style.height = '800px';
+}
+
+function runTest() {
+
+  var iframe1 = document.createElement('iframe');
+  iframe1.setAttribute('mozbrowser', 'true');
+
+  var iframeWidth = 400;
+  var iframeHeight = 400;
+  var numIframeLoaded = 0;
+  var numResizeEvents = 0;
+  var mm;
+
+  iframe1.src = 'data:text/html,<html><body><div id=\'abox\' ' +
+    'style=\'background:blue;width:200px;height:200px\'>test</div></body></html>';
+  iframe1.style.width = iframeWidth + 'px';
+  iframe1.style.height = iframeHeight + 'px';
+  document.body.appendChild(iframe1);
+
+  function iframeScrollAreaChanged(e) {
+    numResizeEvents++;
+    if (numResizeEvents === 1) {
+      ok(true, 'Resize event when changing content size');
+      ok(e.detail.width > iframeWidth, 'Iframes content is larger than iframe');
+      ok(e.detail.height > iframeHeight, 'Iframes content is larger than iframe');
+      iframe1.src = 'data:text/html,<html><body><div id=\'abox\' ' +
+        'style=\'background:blue;width:200px;height:200px\'>test</div></body></html>';
+    } else if (numResizeEvents === 2) {
+      ok(true, 'Resize event when changing src');
+      iframe1.removeEventListener('mozbrowserresize', iframeScrollAreaChanged);
+      SimpleTest.finish();
+    }
+  }
+
+  function iframeLoadedHandler() {
+    iframe1.removeEventListener('mozbrowserloadend', iframeLoadedHandler);
+    mm = SpecialPowers.getBrowserFrameMessageManager(iframe1);
+    iframe1.getContentDimensions().onsuccess = function(e) {
+      ok(typeof e.target.result.width === 'number', 'Received width');
+      ok(typeof e.target.result.height === 'number', 'Received height');
+      ok(e.target.result.height <= iframeHeight, 'Iframes content is smaller than iframe');
+      ok(e.target.result.width <= iframeWidth, 'Iframes content is smaller than iframe');
+      iframe1.addEventListener('mozbrowserscrollareachanged', iframeScrollAreaChanged);
+      mm.loadFrameScript('data:,(' + resizeContent.toString() + ')();', false);
+    }
+  }
+
+  iframe1.addEventListener('mozbrowserloadend', iframeLoadedHandler);
+}
+
+addEventListener('load', function() {
+  SimpleTest.executeSoon(runTest);
+});