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