mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
87 lines
2.9 KiB
JavaScript
87 lines
2.9 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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(function () { // bug 673569 workaround :(
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const { classes: Cc, interfaces: Ci, utils: Cu } = Components;
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Cu.import("resource://gre/modules/PageThumbs.jsm");
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const backgroundPageThumbsContent = {
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init: function () {
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// Arrange to prevent (most) popup dialogs for this window - popups done
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// in the parent (eg, auth) aren't prevented, but alert() etc are.
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let dwu = content.
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QueryInterface(Ci.nsIInterfaceRequestor).
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getInterface(Ci.nsIDOMWindowUtils);
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dwu.preventFurtherDialogs();
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// We want a low network priority for this service - lower than b/g tabs
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// etc - so set it to the lowest priority available.
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this._webNav.QueryInterface(Ci.nsIDocumentLoader).
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loadGroup.QueryInterface(Ci.nsISupportsPriority).
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priority = Ci.nsISupportsPriority.PRIORITY_LOWEST;
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docShell.allowMedia = false;
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docShell.allowPlugins = false;
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addMessageListener("BackgroundPageThumbs:capture",
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this._onCapture.bind(this));
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},
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get _webNav() {
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return docShell.QueryInterface(Ci.nsIWebNavigation);
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},
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_onCapture: function (msg) {
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this._webNav.stop(Ci.nsIWebNavigation.STOP_NETWORK);
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if (this._onLoad)
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removeEventListener("load", this._onLoad, true);
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this._onLoad = function onLoad(event) {
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if (event.target != content.document)
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return;
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let pageLoadTime = new Date() - loadDate;
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removeEventListener("load", this._onLoad, true);
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delete this._onLoad;
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let canvas = PageThumbs._createCanvas(content);
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let captureDate = new Date();
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PageThumbs._captureToCanvas(content, canvas);
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let captureTime = new Date() - captureDate;
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let finalURL = this._webNav.currentURI.spec;
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let fileReader = Cc["@mozilla.org/files/filereader;1"].
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createInstance(Ci.nsIDOMFileReader);
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fileReader.onloadend = function onArrayBufferLoad() {
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sendAsyncMessage("BackgroundPageThumbs:didCapture", {
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id: msg.json.id,
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imageData: fileReader.result,
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finalURL: finalURL,
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telemetry: {
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CAPTURE_PAGE_LOAD_TIME_MS: pageLoadTime,
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CAPTURE_CANVAS_DRAW_TIME_MS: captureTime,
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},
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});
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};
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canvas.toBlob(blob => fileReader.readAsArrayBuffer(blob));
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// Load about:blank to cause the captured window to be collected...
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// eventually.
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this._webNav.loadURI("about:blank", Ci.nsIWebNavigation.LOAD_FLAGS_NONE,
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null, null, null);
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}.bind(this);
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addEventListener("load", this._onLoad, true);
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this._webNav.loadURI(msg.json.url, Ci.nsIWebNavigation.LOAD_FLAGS_NONE,
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null, null, null);
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let loadDate = new Date();
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},
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};
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backgroundPageThumbsContent.init();
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})();
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