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const gTestRoot = getRootDirectory(gTestPath).replace(
"chrome://mochitests/content/",
"http://127.0.0.1:8888/"
);
add_task(async function test() {
await BrowserTestUtils.withNewTab(
{ gBrowser, url: gTestRoot + "file_bug839103.html" },
async function (browser) {
await SpecialPowers.spawn(browser, [gTestRoot], testBody);
}
);
});
// This function runs entirely in the content process. It doesn't have access
// any free variables in this file.
async function testBody(testRoot) {
const gStyleSheet = "bug839103.css";
function unexpectedContentEvent(event) {
ok(false, "Received a " + event.type + " event on content");
}
// We've seen the original stylesheet in the document.
// Now add a stylesheet on the fly and make sure we see it.
let doc = content.document;
doc.styleSheetChangeEventsEnabled = true;
doc.addEventListener(
"StyleSheetApplicableStateChanged",
unexpectedContentEvent
);
doc.defaultView.addEventListener(
"StyleSheetApplicableStateChanged",
unexpectedContentEvent
);
let link = doc.createElement("link");
link.setAttribute("rel", "stylesheet");
link.setAttribute("type", "text/css");
link.setAttribute("href", testRoot + gStyleSheet);
let stateChanged = ContentTaskUtils.waitForEvent(
docShell.chromeEventHandler,
"StyleSheetApplicableStateChanged",
true
);
doc.body.appendChild(link);
info("waiting for applicable state change event");
let evt = await stateChanged;
info("received dynamic style sheet applicable state change event");
is(
evt.type,
"StyleSheetApplicableStateChanged",
"evt.type has expected value"
);
is(evt.target, doc, "event targets correct document");
is(evt.stylesheet, link.sheet, "evt.stylesheet has the right value");
is(evt.applicable, true, "evt.applicable has the right value");
stateChanged = ContentTaskUtils.waitForEvent(
docShell.chromeEventHandler,
"StyleSheetApplicableStateChanged",
true
);
link.sheet.disabled = true;
evt = await stateChanged;
is(
evt.type,
"StyleSheetApplicableStateChanged",
"evt.type has expected value"
);
info(
'received dynamic style sheet applicable state change event after media="" changed'
);
is(evt.target, doc, "event targets correct document");
is(evt.stylesheet, link.sheet, "evt.stylesheet has the right value");
is(evt.applicable, false, "evt.applicable has the right value");
doc.body.removeChild(link);
}
|
