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/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
// This test checks whether fullscreen windows can transition to minimized windows,
// and back again. This is sometimes not directly supported by the OS widgets. For
// example, in macOS, the minimize button is greyed-out in the title bar of
// fullscreen windows, making this transition impossible for users to initiate.
// Still, web APIs do allow arbitrary combinations of window calls, and this test
// exercises some of those combinations.
const restoreWindowToNormal = async () => {
// Get the window to normal state by calling window.restore(). This may take
// multiple attempts since a call to restore could bring the window to either
// NORMAL or MAXIMIZED state.
while (window.windowState != window.STATE_NORMAL) {
info(
`Calling window.restore(), to try to reach "normal" state ${window.STATE_NORMAL}.`
);
let promiseSizeModeChange = BrowserTestUtils.waitForEvent(
window,
"sizemodechange"
);
window.restore();
await promiseSizeModeChange;
info(`Window reached state ${window.windowState}.`);
}
};
add_task(async function () {
registerCleanupFunction(function () {
window.restore();
});
// We reuse these variables to create new promises for each transition.
let promiseSizeModeChange;
let promiseFullscreen;
await restoreWindowToNormal();
ok(!window.fullScreen, "Window should not be fullscreen at start of test.");
// Get to fullscreen.
info("Requesting fullscreen.");
promiseFullscreen = document.documentElement.requestFullscreen();
await promiseFullscreen;
ok(window.fullScreen, "Window should be fullscreen before being minimized.");
// Transition between fullscreen and minimize states.
info("Requesting minimize on a fullscreen window.");
promiseSizeModeChange = BrowserTestUtils.waitForEvent(
window,
"sizemodechange"
);
window.minimize();
await promiseSizeModeChange;
is(
window.windowState,
window.STATE_MINIMIZED,
"Window should be minimized after fullscreen."
);
// Whether or not the previous transition worked, restore the window
// and then minimize it.
await restoreWindowToNormal();
info("Requesting minimize on a normal window.");
promiseSizeModeChange = BrowserTestUtils.waitForEvent(
window,
"sizemodechange"
);
window.minimize();
await promiseSizeModeChange;
is(
window.windowState,
window.STATE_MINIMIZED,
"Window should be minimized before fullscreen."
);
info("Requesting fullscreen on a minimized window.");
promiseFullscreen = document.documentElement.requestFullscreen();
await promiseFullscreen;
ok(window.fullScreen, "Window should be fullscreen after being minimized.");
});
|
