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<!DOCTYPE HTML>
<html>
<head>
<title>Test for addSheet</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1024707">Mozilla Bug 1024707</a>
<iframe id="iframe1" src="additional_sheets_helper.html"></iframe>
<iframe id="iframe2" src="additional_sheets_helper.html"></iframe>
<pre id="test">
<script type="application/javascript">
let gIOService = SpecialPowers.Cc["@mozilla.org/network/io-service;1"]
.getService(SpecialPowers.Ci.nsIIOService);
let gSSService = SpecialPowers.Cc["@mozilla.org/content/style-sheet-service;1"]
.getService(SpecialPowers.Ci.nsIStyleSheetService);
function test(win, sheet) {
let cs = win.getComputedStyle(win.document.body);
is(cs.getPropertyValue("color"), "rgb(0, 0, 0)", "should have default color");
var windowUtils = SpecialPowers.getDOMWindowUtils(win);
windowUtils.addSheet(sheet, SpecialPowers.Ci.nsIDOMWindowUtils.USER_SHEET);
is(cs.getPropertyValue("color"), "rgb(255, 0, 0)", "should have changed color to red");
}
function onDocumentElementInserted(url, callback) {
const obs = SpecialPowers.Services.obs;
function observer(doc) {
if (doc.URL === url) {
obs.removeObserver(observer, "document-element-inserted");
callback(doc);
}
};
obs.addObserver(observer, "document-element-inserted");
}
// Resolves when the document (and iframe1 + iframe2) have loaded.
const loadedPromise = new Promise(resolve => {
window.addEventListener("load", () => resolve(), { once: true });
});
add_setup(async () => loadedPromise);
add_task(async function test_addSheet_in_existing_frame() {
var uri = gIOService.newURI("data:text/css,body{color:red;}");
let sheet = gSSService.preloadSheet(uri, SpecialPowers.Ci.nsIStyleSheetService.USER_SHEET);
test(document.getElementById("iframe1").contentWindow, sheet);
test(document.getElementById("iframe2").contentWindow, sheet);
});
// Regression test for https://bugzilla.mozilla.org/show_bug.cgi?id=1961064
add_task(async function test_addSheet_order_in_new_frame() {
const USER_SHEET = SpecialPowers.Ci.nsIStyleSheetService.USER_SHEET;
var uri1 = gIOService.newURI("data:text/css,body{--css-var:1;}");
var uri2 = gIOService.newURI("data:text/css,body{--css-var:2;}");
var uri3 = gIOService.newURI("data:text/css,body{--css-var:3;}");
var uri4 = gIOService.newURI("data:text/css,body{--css-var:4;}");
let sheet1 = gSSService.preloadSheet(uri1, USER_SHEET);
let sheet2 = gSSService.preloadSheet(uri2, USER_SHEET);
let sheet3 = gSSService.preloadSheet(uri3, USER_SHEET);
let sheet4 = gSSService.preloadSheet(uri4, USER_SHEET);
let f = document.createElement("iframe");
f.src = "additional_sheets_helper.html?frame";
let elementInsertedPromise = new Promise(resolve => {
onDocumentElementInserted(f.src, doc => {
info("Testing addSheet at document-element-inserted");
// At this point, mStyleSetFilled == false, so the initialization
// of the styles is delayed until Document::FillStyleSet is called:
// https://bugzilla.mozilla.org/show_bug.cgi?id=1961064#c5
let windowUtils = SpecialPowers.getDOMWindowUtils(doc.defaultView);
windowUtils.addSheet(sheet1, USER_SHEET);
windowUtils.addSheet(sheet2, USER_SHEET);
resolve();
});
});
await new Promise(resolve => {
f.onload = resolve;
document.body.append(f);
});
await elementInsertedPromise;
let cs = f.contentWindow.getComputedStyle(f.contentDocument.body);
is(cs.getPropertyValue("--css-var"), "2", "Last addSheet (2) applies last");
info("Testing addSheet in an existing document");
// At this point, mStyleSetFilled == true, so the style sheets are applied
// immediately.
let windowUtils = SpecialPowers.getDOMWindowUtils(f.contentWindow);
windowUtils.addSheet(sheet3, USER_SHEET);
windowUtils.addSheet(sheet4, USER_SHEET);
is(cs.getPropertyValue("--css-var"), "4", "Last addSheet (4) applies last");
f.remove();
});
</script>
</body>
</html>
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