michael@0: /* Any copyright is dedicated to the public domain.
michael@0:    http://creativecommons.org/publicdomain/zero/1.0/ */
michael@0: 
michael@0: // Bug 808231 - Add mozbrowsernextpaint event.
michael@0: "use strict";
michael@0: 
michael@0: SimpleTest.waitForExplicitFinish();
michael@0: browserElementTestHelpers.setEnabledPref(true);
michael@0: browserElementTestHelpers.addPermission();
michael@0: 
michael@0: function runTest() {
michael@0:   var iframe = document.createElement('iframe');
michael@0:   SpecialPowers.wrap(iframe).mozbrowser = true;
michael@0:   document.body.appendChild(iframe);
michael@0: 
michael@0:   // Add a first listener that we'll remove shortly after.
michael@0:   iframe.addNextPaintListener(wrongListener);
michael@0: 
michael@0:   var gotFirstNextPaintEvent = false;
michael@0:   iframe.addNextPaintListener(function () {
michael@0:     ok(!gotFirstNextPaintEvent, 'got the first nextpaint event');
michael@0: 
michael@0:     // Make sure we're only called once.
michael@0:     gotFirstNextPaintEvent = true;
michael@0: 
michael@0:     iframe.addNextPaintListener(function () {
michael@0:       info('got the second nextpaint event');
michael@0:       SimpleTest.finish();
michael@0:     });
michael@0: 
michael@0:     // Force the iframe to repaint.
michael@0:     SimpleTest.executeSoon(function () iframe.src += '#next');
michael@0:   });
michael@0: 
michael@0:   // Remove the first listener to make sure it's not called.
michael@0:   iframe.removeNextPaintListener(wrongListener);
michael@0:   iframe.src = 'file_browserElement_NextPaint.html';
michael@0: }
michael@0: 
michael@0: function wrongListener() {
michael@0:   ok(false, 'first listener should have been removed');
michael@0: }
michael@0: 
michael@0: addEventListener('testready', runTest);