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products/Sources/formale Sprachen/C/Firefox/docshell/test/chrome/ (Browser von der Mozilla Stiftung Version 136.0.1^©) Datei vom 10.2.2025 mit Größe 3 kB

Quellcode-Bibliothek test_bug453650.xhtml Sprache: unbekannt

Columbo aufrufen.xhtml Download desUnknown {[0] [0] [0]}Datei anzeigen

<?xml version="1.0"?>
<?xml-stylesheet type="text/css" href="chrome://global/skin"?>
<?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?>

<window title="Mozilla Bug 453650"
        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">

  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>

  
  <script type="application/javascript">
  <![CDATA[

  /** Test for Bug 453650 */
  SimpleTest.waitForExplicitFinish();

  var iter = runTests();
  nextTest();

  function* runTests() {
    var iframe = document.createXULElement("iframe");
    iframe.style.width = "300px";
    iframe.style.height = "300px";
    iframe.setAttribute("src", "data:text/html,<h1 id='h'>hello</h1>");

    document.documentElement.appendChild(iframe);
    yield whenLoaded(iframe);
    info("iframe loaded");

    var h1 = iframe.contentDocument.getElementById("h");
    let myCallback = function() { h1.style.width = "400px"; };
    info("Calling waitForInterruptibleReflow");
    yield waitForInterruptibleReflow(iframe.docShell, myCallback);
    info("got past top-level waitForInterruptibleReflow");

    myCallback = function() { h1.style.width = "300px"; };
    info("Calling waitForReflow");
    waitForReflow(iframe.docShell, myCallback);
    info("got past top-level waitForReflow");
    yield is(300, h1.offsetWidth, "h1 has correct width");

    SimpleTest.finish();
  }

  function waitForInterruptibleReflow(docShell,
                                      callbackThatShouldTriggerReflow) {
    waitForReflow(docShell, callbackThatShouldTriggerReflow, true);
  }

  function waitForReflow(docShell, callbackThatShouldTriggerReflow,
                         interruptible = false) {
    info("Entering waitForReflow");
    function done() {
      info("Entering done (inside of waitForReflow)");

      docShell.removeWeakReflowObserver(observer);
      SimpleTest.executeSoon(nextTest);
    }

    var observer = {
      reflow (start, end) {
        info("Entering observer.reflow");
        if (interruptible) {
          ok(false, "expected interruptible reflow");
        } else {
          ok(true, "observed uninterruptible reflow");
        }

        info("times: " + start + ", " + end);
        ok(start <= end, "reflow start time lower than end time");
        done();
      },

      reflowInterruptible (start, end) {
        info("Entering observer.reflowInterruptible");
        if (!interruptible) {
          ok(false, "expected uninterruptible reflow");
        } else {
          ok(true, "observed interruptible reflow");
        }

        info("times: " + start + ", " + end);
        ok(start <= end, "reflow start time lower than end time");
        done();
      },

      QueryInterface: ChromeUtils.generateQI([
        "nsIReflowObserver",
        "nsISupportsWeakReference",
      ]),
    };

    info("waitForReflow is adding a reflow observer");
    docShell.addWeakReflowObserver(observer);
    callbackThatShouldTriggerReflow();
  }

  function whenLoaded(iframe) {
    info("entering whenLoaded");
    iframe.addEventListener("load", function() {
      SimpleTest.executeSoon(nextTest);
    }, { once: true });
  }

  function nextTest() {
    info("entering nextTest");
    iter.next();
  }

  ]]>
  </script>

  
  <body xmlns="http://www.w3.org/1999/xhtml">
  <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=453650"
     target="_blank">Mozilla Bug 453650</a>
  </body>
</window>