120 lines
3.6 KiB
HTML
120 lines
3.6 KiB
HTML
<?xml version="1.0"?>
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<?xml-stylesheet type="text/css" href="chrome://global/skin"?>
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<?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?>
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=453650
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-->
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<window title="Mozilla Bug 453650"
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xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
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<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
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<!-- test code goes here -->
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<script type="application/javascript">
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<![CDATA[
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/** Test for Bug 453650 */
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SimpleTest.waitForExplicitFinish();
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var iter = runTests();
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nextTest();
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function* runTests() {
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var iframe = document.createXULElement("iframe");
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iframe.style.width = "300px";
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iframe.style.height = "300px";
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iframe.setAttribute("src", "data:text/html,<h1 id='h'>hello</h1>");
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document.documentElement.appendChild(iframe);
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yield whenLoaded(iframe);
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info("iframe loaded");
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var h1 = iframe.contentDocument.getElementById("h");
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let myCallback = function() { h1.style.width = "400px"; };
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info("Calling waitForInterruptibleReflow");
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yield waitForInterruptibleReflow(iframe.docShell, myCallback);
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info("got past top-level waitForInterruptibleReflow");
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myCallback = function() { h1.style.width = "300px"; };
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info("Calling waitForReflow");
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waitForReflow(iframe.docShell, myCallback);
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info("got past top-level waitForReflow");
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yield is(300, h1.offsetWidth, "h1 has correct width");
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SimpleTest.finish();
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}
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function waitForInterruptibleReflow(docShell,
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callbackThatShouldTriggerReflow) {
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waitForReflow(docShell, callbackThatShouldTriggerReflow, true);
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}
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function waitForReflow(docShell, callbackThatShouldTriggerReflow,
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interruptible = false) {
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info("Entering waitForReflow");
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function done() {
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info("Entering done (inside of waitForReflow)");
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docShell.removeWeakReflowObserver(observer);
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SimpleTest.executeSoon(nextTest);
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}
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var observer = {
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reflow (start, end) {
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info("Entering observer.reflow");
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if (interruptible) {
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ok(false, "expected interruptible reflow");
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} else {
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ok(true, "observed uninterruptible reflow");
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}
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info("times: " + start + ", " + end);
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ok(start <= end, "reflow start time lower than end time");
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done();
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},
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reflowInterruptible (start, end) {
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info("Entering observer.reflowInterruptible");
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if (!interruptible) {
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ok(false, "expected uninterruptible reflow");
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} else {
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ok(true, "observed interruptible reflow");
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}
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info("times: " + start + ", " + end);
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ok(start <= end, "reflow start time lower than end time");
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done();
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},
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QueryInterface: ChromeUtils.generateQI([
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"nsIReflowObserver",
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"nsISupportsWeakReference",
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]),
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};
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info("waitForReflow is adding a reflow observer");
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docShell.addWeakReflowObserver(observer);
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callbackThatShouldTriggerReflow();
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}
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function whenLoaded(iframe) {
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info("entering whenLoaded");
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iframe.addEventListener("load", function() {
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SimpleTest.executeSoon(nextTest);
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}, { once: true });
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}
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function nextTest() {
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info("entering nextTest");
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iter.next();
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}
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]]>
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</script>
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<!-- test results are displayed in the html:body -->
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<body xmlns="http://www.w3.org/1999/xhtml">
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<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=453650"
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target="_blank">Mozilla Bug 453650</a>
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</body>
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</window>
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