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Bug 1184387 - Stop using the hidden DOM window in browser_parsable_css. r=Gijs

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The hidden DOM window has a chrome:// URI on mac and a resource:// URI elsewhere,
which makes it really terrible for stuff like this.
This commit is contained in:
Bobby Holley 2015-08-04 15:20:50 -07:00
parent 32594d9e84
commit f531c54452
1 changed files with 23 additions and 5 deletions
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28
browser/base/content/test/general/browser_parsable_css.js
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@ -55,6 +55,16 @@ function ignoredError(aErrorObject) {
return false;
}
function once(target, name) {
return new Promise((resolve, reject) => {
let cb = () => {
target.removeEventListener(name, cb);
resolve();
};
target.addEventListener(name, cb);
});
}
add_task(function checkAllTheCSS() {
let appDir = Services.dirsvc.get("XCurProcD", Ci.nsIFile);
// This asynchronously produces a list of URLs (sadly, mostly sync on our
@ -62,13 +72,21 @@ add_task(function checkAllTheCSS() {
// our zipreader APIs are all sync)
let uris = yield generateURIsFromDirTree(appDir, ".css");
// Create a clean iframe to load all the files into:
let hiddenWin = Services.appShell.hiddenDOMWindow;
let iframe = hiddenWin.document.createElementNS("http://www.w3.org/1999/xhtml", "html:iframe");
hiddenWin.document.documentElement.appendChild(iframe);
// Create a clean iframe to load all the files into. This needs to live at a
// file or jar URI (depending on whether we're using a packaged build or not)
// so that it's allowed to load other same-scheme URIs (i.e. the browser css).
let resHandler = Services.io.getProtocolHandler("resource")
.QueryInterface(Ci.nsISubstitutingProtocolHandler);
let resURI = Services.io.newURI('resource://testing-common/resource_test_file.html', null, null);
let testFile = resHandler.resolveURI(resURI);
let windowless = Services.appShell.createWindowlessBrowser();
let iframe = windowless.document.createElementNS("http://www.w3.org/1999/xhtml", "html:iframe");
windowless.document.documentElement.appendChild(iframe);
let iframeLoaded = once(iframe, 'load');
iframe.contentWindow.location = testFile;
yield iframeLoaded;
let doc = iframe.contentWindow.document;
// Listen for errors caused by the CSS:
let errorListener = {
observe: function(aMessage) {