<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=1020244 --> <head> <meta charset="utf-8"> <title>Test for Bug 1020244 - Make sure anonymous content still works after a reflow (after the canvasframe has been reconstructed)</title> <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> </head> <body> <div> <div id="test-element" style="color:red;">text content</div> </div> <script type="application/javascript;version=1.8"> info("Inserting anonymous content into the document frame"); let chromeDocument = SpecialPowers.wrap(document); let testElement = document.querySelector("div"); let anonymousContent = chromeDocument.insertAnonymousContent(testElement); info("Modifying the style of an element in the anonymous content"); let style = anonymousContent.setAttributeForElement("test-element", "style", "color:green;"); info("Toggling the display style on the document element to force reframing"); // Note that we force sync reflows to make sure the canvasframe is recreated // synchronously. document.documentElement.style.display = "none"; let forceFlush = document.documentElement.offsetHeight; document.documentElement.style.display = "block"; forceFlush = document.documentElement.offsetHeight; info("Checking that the anonymous content can be retrieved still"); style = anonymousContent.getAttributeForElement("test-element", "style"); is(style, "color:green;", "The anonymous content still exists after reflow"); info("Removing the anonymous content"); chromeDocument.removeAnonymousContent(anonymousContent); </script> </body> </html>