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<!DOCTYPE HTML>
<html>
<!--
Tests the alwaysOnTop window feature for the Windows OS.
-->
<head>
<meta charset="utf-8">
<title>Test an alwaysOnTop window on Windows</title>
<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css">
<script type="application/javascript">
const {BrowserTestUtils} = ChromeUtils.import("resource://testing-common/BrowserTestUtils.jsm");
const {ctypes} = ChromeUtils.import("resource://gre/modules/ctypes.jsm");
function assertAlwaysOnTop(win, expected) {
let docShell = win.docShell;
let chromeFlags = docShell.treeOwner
.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIAppWindow)
.chromeFlags;
let hasFlag = !!(chromeFlags & Ci.nsIWebBrowserChrome.CHROME_ALWAYS_ON_TOP);
is(hasFlag, expected, "Window should have CHROME_ALWAYS_ON_TOP flag.");
const hWND = Number(win.docShell.treeOwner.nsIBaseWindow.nativeHandle);
const WS_EX_TOPMOST = 0x00000008;
const GWL_EXSTYLE = -20;
let lib = ctypes.open("user32.dll");
// On 32-bit systems, the function we need to call is GetWindowLongW. On
// 64-bit systems, the function is GetWindowLongPtrW. Interestingly,
// the MSDN page[1] for GetWindowLongPtrW claims that calling it should work
// on both 32-bit and 64-bit, but that didn't appear to be the case here
// with local testing, hence the conditional.
//
// [1]: https://docs.microsoft.com/en-us/windows/desktop/api/winuser/nf-winuser-getwindowlongptrw
let GetWindowFuncSymbol = Services.appinfo.is64Bit ? "GetWindowLongPtrW"
: "GetWindowLongW";
let GetWindowFunc = lib.declare(GetWindowFuncSymbol, ctypes.winapi_abi,
ctypes.intptr_t, ctypes.uintptr_t,
ctypes.int);
let styles = GetWindowFunc(hWND, GWL_EXSTYLE);
let isAlwaysOnTop = !!(styles & WS_EX_TOPMOST);
is(isAlwaysOnTop, expected, "Window should be always on top.");
lib.close();
}
if (Services.appinfo.OS != "WINNT") {
ok(false, "This test is only designed to run on Windows.");
} else {
add_task(async function() {
let normalWinOpened = BrowserTestUtils.domWindowOpenedAndLoaded();
window.openDialog("about:blank",
"_blank", "chrome,width=100,height=100,noopener", null);
let normalWin = await normalWinOpened;
ok(normalWin, "Normal window opened");
assertAlwaysOnTop(normalWin, false);
await BrowserTestUtils.closeWindow(normalWin);
let alwaysOnTopWinOpened = BrowserTestUtils.domWindowOpenedAndLoaded();
window.openDialog("about:blank",
"_blank", "chrome,width=100,height=100,alwaysOnTop,noopener", null);
let alwaysOnTopWin = await alwaysOnTopWinOpened;
ok(alwaysOnTopWin, "AlwaysOnTop window opened");
assertAlwaysOnTop(alwaysOnTopWin, true);
await BrowserTestUtils.closeWindow(alwaysOnTopWin);
});
}
</script>
</head>
<body>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
</pre>
</body>
</html>
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