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Test Info:
<!DOCTYPE HTML>
<html>
<head>
<title>nsIDOMWindowUtils::elementFromPoint test</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">
<style>
body {
/* Make room for scrolling */
}
</style>
</head>
<body id="body">
<script type="application/javascript">
/*
void getScrollXY(in boolean aFlushLayout, out long aScrollX, out long aScrollY);
*/
function doTests() {
testScrollXY();
testHiddenIframe();
SimpleTest.finish();
}
function testScrollXY() {
let iframe = document.getElementById("iframe");
let cwindow = iframe.contentWindow;
let domWindowUtils = SpecialPowers.getDOMWindowUtils(cwindow);
function checkGetScrollXYState(flush, vals, testName) {
let scrollX = {}, scrollY = {};
domWindowUtils.getScrollXY(flush, scrollX, scrollY);
is(Math.round(scrollX.value), vals[0], "getScrollXY x for test: " + testName);
is(Math.round(scrollY.value), vals[1], "getScrollXY y for test: " + testName);
}
function checkWindowScrollState(vals, testName) {
is(Math.round(cwindow.scrollX), vals[0], "scrollX for test: " + testName);
is(Math.round(cwindow.scrollY), vals[1], "scrollY for test: " + testName);
}
// Check initial state (0, 0)
checkGetScrollXYState(false, [0, 0], "initial getScrollXY state");
checkGetScrollXYState(true, [0, 0], "initial getScrollXY state+flush");
checkWindowScrollState([0, 0], "initial window.scroll* state");
// scroll
cwindow.scrollTo(900, 1000);
checkGetScrollXYState(false, [900, 1000], "after scroll getScrollXY state");
checkGetScrollXYState(true, [900, 1000], "after scroll getScrollXY state+flush");
checkWindowScrollState([900, 1000], "after scroll window.scroll* state");
// ensure flush=false works
cwindow.document.body.style.width = 'auto';
cwindow.document.body.style.height = 'auto';
checkGetScrollXYState(false, [900, 1000], "didn't flush layout for getScrollXY");
checkGetScrollXYState(true, [0, 0], "flushed layout for getScrollXY");
}
function testHiddenIframe() {
let iframe = document.getElementById("hidden-iframe");
let cwindow = iframe.contentWindow;
let domWindowUtils = SpecialPowers.getDOMWindowUtils(cwindow);
// make sure getScrollXY doesn't throw
let scrollX = {}, scrollY = {};
domWindowUtils.getScrollXY(false, scrollX, scrollY);
is(Math.round(scrollX.value), 0, "scrollX is zero for display:none iframe");
is(Math.round(scrollY.value), 0, "scrollY is zero for display:none iframe");
}
SimpleTest.waitForExplicitFinish();
</script>
<!-- can't run this in the test document, since it potentially runs in a
scrolling="no" test harness iframe, and that causes a failure for some
reason -->
<iframe srcdoc="<body style='width: 100000px; height: 100000px;'><p>top</p></body>"
id="iframe"
onload="doTests();">
</iframe>
<iframe id="hidden-iframe" style="display: none;"></iframe>
<p id="display"></p>
</body>
</html>