firefox-main/toolkit/components/windowwatcher/test/browser_suppress_initial_fullscreen.js (file symbol)

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Test Info: Warnings

/* Any copyright is dedicated to the Public Domain.
"use strict";
// Firefox remembers the last window sizemode in the XUL store. If that value
// is "fullscreen", the next window opened comes up fullscreen too, which on
// macOS puts it on a Space of its own where the user never sees it.
// nsAppShellService skips the restore when the caller passes
// CHROME_SUPPRESS_INITIAL_FULLSCREEN, or when the parent window is fullscreen.
const STORE = "chrome://browser/content/browser.xhtml";
const BASE_FEATURES = "chrome,dialog=no,all";
function storedSizemode() {
return Services.xulStore.getValue(STORE, "main-window", "sizemode");
}
// A closing window writes its own sizemode back to the store, so each case has
// to set the stored value again rather than relying on the one before it.
async function openWindow(features, parent = null) {
Services.xulStore.setValue(STORE, "main-window", "sizemode", "fullscreen");
let opened = BrowserTestUtils.domWindowOpened();
Services.ww.openWindow(
parent,
AppConstants.BROWSER_CHROME_URL,
"_blank",
features,
null
);
let win = await opened;
await BrowserTestUtils.waitForEvent(win, "load");
return win;
}
add_setup(async function () {
let previous = storedSizemode() || "normal";
registerCleanupFunction(() => {
Services.xulStore.setValue(STORE, "main-window", "sizemode", previous);
});
});
add_task(async function withoutTheFlag_restoresFullscreen() {
// This is the control: with no flag the window is expected to go fullscreen.
// On macOS, use emulated fullscreen instead of the native one, because the
// native transition often never finishes in automation and the test would
// hang waiting for it. Either kind of fullscreen sets sizemode, which is all
// this case checks.
await SpecialPowers.pushPrefEnv({
set: [["full-screen-api.macos-native-full-screen", false]],
});
let win = await openWindow(BASE_FEATURES);
try {
// Going fullscreen is a request to the window manager, which answers when
// it likes. Firefox then rewrites sizemode from the window's real state, so
// the attribute below reports what actually happened, not what was asked
// for. Wait for the answer instead of reading it the instant the window
// loads.
await TestUtils.waitForCondition(
() =>
win.document.documentElement.getAttribute("sizemode") == "fullscreen",
"waiting for the window to be put into fullscreen"
);
is(
win.document.documentElement.getAttribute("sizemode"),
"fullscreen",
"without the flag the stored sizemode is restored"
);
} finally {
await BrowserTestUtils.closeWindow(win);
await SpecialPowers.popPrefEnv();
}
});
add_task(async function withTheFlag_doesNotRestoreFullscreen() {
let win = await openWindow(`${BASE_FEATURES},suppressinitialfullscreen`);
let { chromeFlags } = win.docShell.treeOwner
.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIAppWindow);
ok(
chromeFlags & Ci.nsIWebBrowserChrome.CHROME_SUPPRESS_INITIAL_FULLSCREEN,
"the feature reaches the chrome flags"
);
isnot(
win.document.documentElement.getAttribute("sizemode"),
"fullscreen",
"the flag suppresses the restored sizemode"
);
ok(!win.fullScreen, "the window is not fullscreen");
await BrowserTestUtils.closeWindow(win);
});
add_task(async function chromelessShape_withASize_doesNotRestoreFullscreen() {
// The shape an onboarding flow opens: chromeless, with an explicit size.
let win = await openWindow(
"chrome,dialog=no,resizable,minimizable,titlebar,close," +
"suppressinitialfullscreen,width=960,height=720"
);
isnot(
win.document.documentElement.getAttribute("sizemode"),
"fullscreen",
"a sized chromeless window does not come up fullscreen either"
);
await BrowserTestUtils.closeWindow(win);
});