mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
142 lines
4.1 KiB
JavaScript
142 lines
4.1 KiB
JavaScript
#ifdef 0
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/* 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#endif
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/**
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* Keeps thumbnails of open web pages up-to-date.
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*/
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let gBrowserThumbnails = {
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_captureDelayMS: 2000,
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/**
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* Map of capture() timeouts assigned to their browsers.
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*/
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_timeouts: null,
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/**
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* Cache for the PageThumbs module.
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*/
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_pageThumbs: null,
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/**
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* List of tab events we want to listen for.
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*/
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_tabEvents: ["TabClose", "TabSelect"],
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init: function Thumbnails_init() {
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gBrowser.addTabsProgressListener(this);
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this._tabEvents.forEach(function (aEvent) {
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gBrowser.tabContainer.addEventListener(aEvent, this, false);
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}, this);
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this._timeouts = new WeakMap();
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XPCOMUtils.defineLazyModuleGetter(this, "_pageThumbs",
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"resource:///modules/PageThumbs.jsm", "PageThumbs");
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},
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uninit: function Thumbnails_uninit() {
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gBrowser.removeTabsProgressListener(this);
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this._tabEvents.forEach(function (aEvent) {
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gBrowser.tabContainer.removeEventListener(aEvent, this, false);
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}, this);
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},
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handleEvent: function Thumbnails_handleEvent(aEvent) {
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switch (aEvent.type) {
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case "scroll":
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let browser = aEvent.currentTarget;
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if (this._timeouts.has(browser))
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this._delayedCapture(browser);
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break;
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case "TabSelect":
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this._delayedCapture(aEvent.target.linkedBrowser);
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break;
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case "TabClose": {
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this._clearTimeout(aEvent.target.linkedBrowser);
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break;
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}
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}
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},
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/**
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* State change progress listener for all tabs.
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*/
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onStateChange: function Thumbnails_onStateChange(aBrowser, aWebProgress,
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aRequest, aStateFlags, aStatus) {
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if (aStateFlags & Ci.nsIWebProgressListener.STATE_STOP &&
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aStateFlags & Ci.nsIWebProgressListener.STATE_IS_NETWORK)
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this._delayedCapture(aBrowser);
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},
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_capture: function Thumbnails_capture(aBrowser) {
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if (this._shouldCapture(aBrowser))
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this._pageThumbs.captureAndStore(aBrowser);
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},
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_delayedCapture: function Thumbnails_delayedCapture(aBrowser) {
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if (this._timeouts.has(aBrowser))
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clearTimeout(this._timeouts.get(aBrowser));
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else
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aBrowser.addEventListener("scroll", this, true);
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let timeout = setTimeout(function () {
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this._clearTimeout(aBrowser);
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this._capture(aBrowser);
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}.bind(this), this._captureDelayMS);
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this._timeouts.set(aBrowser, timeout);
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},
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_shouldCapture: function Thumbnails_shouldCapture(aBrowser) {
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let doc = aBrowser.contentDocument;
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// FIXME Bug 720575 - Don't capture thumbnails for SVG or XML documents as
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// that currently regresses Talos SVG tests.
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if (doc instanceof SVGDocument || doc instanceof XMLDocument)
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return false;
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// There's no point in taking screenshot of loading pages.
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if (aBrowser.docShell.busyFlags != Ci.nsIDocShell.BUSY_FLAGS_NONE)
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return false;
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// Don't take screenshots of about: pages.
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if (aBrowser.currentURI.schemeIs("about"))
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return false;
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let channel = aBrowser.docShell.currentDocumentChannel;
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// No valid document channel. We shouldn't take a screenshot.
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if (!channel)
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return false;
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// Don't take screenshots of internally redirecting about: pages.
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// This includes error pages.
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if (channel.originalURI.schemeIs("about"))
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return false;
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try {
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// If the channel is a nsIHttpChannel get its http status code.
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let httpChannel = channel.QueryInterface(Ci.nsIHttpChannel);
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// Continue only if we have a 2xx status code.
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return Math.floor(httpChannel.responseStatus / 100) == 2;
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} catch (e) {
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// Not a http channel, we just assume a success status code.
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return true;
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}
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},
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_clearTimeout: function Thumbnails_clearTimeout(aBrowser) {
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if (this._timeouts.has(aBrowser)) {
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aBrowser.removeEventListener("scroll", this, false);
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clearTimeout(this._timeouts.get(aBrowser));
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this._timeouts.delete(aBrowser);
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}
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}
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};
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