1558 lines
52 KiB
JavaScript
1558 lines
52 KiB
JavaScript
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
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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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"use strict";
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this.EXPORTED_SYMBOLS = [
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"DownloadsCommon",
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];
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/**
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* Handles the Downloads panel shared methods and data access.
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*
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* This file includes the following constructors and global objects:
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*
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* DownloadsCommon
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* This object is exposed directly to the consumers of this JavaScript module,
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* and provides shared methods for all the instances of the user interface.
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*
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* DownloadsData
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* Retrieves the list of past and completed downloads from the underlying
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* Downloads API data, and provides asynchronous notifications allowing
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* to build a consistent view of the available data.
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*
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* DownloadsIndicatorData
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* This object registers itself with DownloadsData as a view, and transforms the
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* notifications it receives into overall status data, that is then broadcast to
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* the registered download status indicators.
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*/
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////////////////////////////////////////////////////////////////////////////////
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//// Globals
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const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import("resource://gre/modules/Services.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "NetUtil",
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"resource://gre/modules/NetUtil.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "PluralForm",
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"resource://gre/modules/PluralForm.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "AppConstants",
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"resource://gre/modules/AppConstants.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "Downloads",
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"resource://gre/modules/Downloads.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "DownloadUIHelper",
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"resource://gre/modules/DownloadUIHelper.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "DownloadUtils",
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"resource://gre/modules/DownloadUtils.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "FileUtils",
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"resource://gre/modules/FileUtils.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "OS",
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"resource://gre/modules/osfile.jsm")
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XPCOMUtils.defineLazyModuleGetter(this, "PlacesUtils",
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"resource://gre/modules/PlacesUtils.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "PrivateBrowsingUtils",
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"resource://gre/modules/PrivateBrowsingUtils.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "RecentWindow",
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"resource:///modules/RecentWindow.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "Promise",
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"resource://gre/modules/Promise.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "Task",
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"resource://gre/modules/Task.jsm");
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XPCOMUtils.defineLazyGetter(this, "DownloadsLogger", () => {
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let { ConsoleAPI } = Cu.import("resource://gre/modules/Console.jsm", {});
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let consoleOptions = {
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maxLogLevelPref: "browser.download.loglevel",
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prefix: "Downloads"
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};
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return new ConsoleAPI(consoleOptions);
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});
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const nsIDM = Ci.nsIDownloadManager;
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const kDownloadsStringBundleUrl =
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"chrome://browser/locale/downloads/downloads.properties";
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const kDownloadsStringsRequiringFormatting = {
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sizeWithUnits: true,
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shortTimeLeftSeconds: true,
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shortTimeLeftMinutes: true,
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shortTimeLeftHours: true,
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shortTimeLeftDays: true,
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statusSeparator: true,
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statusSeparatorBeforeNumber: true
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};
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const kDownloadsStringsRequiringPluralForm = {
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otherDownloads2: true
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};
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const kPartialDownloadSuffix = ".part";
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const kPrefBranch = Services.prefs.getBranch("browser.download.");
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var PrefObserver = {
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver,
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Ci.nsISupportsWeakReference]),
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getPref(name) {
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try {
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switch (typeof this.prefs[name]) {
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case "boolean":
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return kPrefBranch.getBoolPref(name);
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}
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} catch (ex) { }
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return this.prefs[name];
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},
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observe(aSubject, aTopic, aData) {
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if (this.prefs.hasOwnProperty(aData)) {
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delete this[aData];
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return this[aData] = this.getPref(aData);
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}
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},
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register(prefs) {
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this.prefs = prefs;
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kPrefBranch.addObserver("", this, true);
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for (let key in prefs) {
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let name = key;
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XPCOMUtils.defineLazyGetter(this, name, function () {
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return PrefObserver.getPref(name);
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});
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}
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},
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};
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PrefObserver.register({
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// prefName: defaultValue
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animateNotifications: true,
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showPanelDropmarker: true,
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});
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////////////////////////////////////////////////////////////////////////////////
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//// DownloadsCommon
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/**
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* This object is exposed directly to the consumers of this JavaScript module,
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* and provides shared methods for all the instances of the user interface.
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*/
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this.DownloadsCommon = {
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ATTENTION_NONE: "",
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ATTENTION_SUCCESS: "success",
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ATTENTION_WARNING: "warning",
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ATTENTION_SEVERE: "severe",
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/**
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* Returns an object whose keys are the string names from the downloads string
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* bundle, and whose values are either the translated strings or functions
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* returning formatted strings.
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*/
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get strings() {
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let strings = {};
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let sb = Services.strings.createBundle(kDownloadsStringBundleUrl);
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let enumerator = sb.getSimpleEnumeration();
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while (enumerator.hasMoreElements()) {
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let string = enumerator.getNext().QueryInterface(Ci.nsIPropertyElement);
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let stringName = string.key;
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if (stringName in kDownloadsStringsRequiringFormatting) {
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strings[stringName] = function () {
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// Convert "arguments" to a real array before calling into XPCOM.
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return sb.formatStringFromName(stringName,
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Array.slice(arguments, 0),
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arguments.length);
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};
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} else if (stringName in kDownloadsStringsRequiringPluralForm) {
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strings[stringName] = function (aCount) {
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// Convert "arguments" to a real array before calling into XPCOM.
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let formattedString = sb.formatStringFromName(stringName,
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Array.slice(arguments, 0),
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arguments.length);
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return PluralForm.get(aCount, formattedString);
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};
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} else {
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strings[stringName] = string.value;
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}
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}
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delete this.strings;
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return this.strings = strings;
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},
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/**
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* Generates a very short string representing the given time left.
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*
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* @param aSeconds
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* Value to be formatted. It represents the number of seconds, it must
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* be positive but does not need to be an integer.
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*
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* @return Formatted string, for example "30s" or "2h". The returned value is
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* maximum three characters long, at least in English.
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*/
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formatTimeLeft(aSeconds) {
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// Decide what text to show for the time
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let seconds = Math.round(aSeconds);
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if (!seconds) {
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return "";
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} else if (seconds <= 30) {
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return DownloadsCommon.strings["shortTimeLeftSeconds"](seconds);
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}
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let minutes = Math.round(aSeconds / 60);
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if (minutes < 60) {
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return DownloadsCommon.strings["shortTimeLeftMinutes"](minutes);
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}
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let hours = Math.round(minutes / 60);
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if (hours < 48) { // two days
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return DownloadsCommon.strings["shortTimeLeftHours"](hours);
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}
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let days = Math.round(hours / 24);
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return DownloadsCommon.strings["shortTimeLeftDays"](Math.min(days, 99));
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},
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/**
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* Indicates whether we should show visual notification on the indicator
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* when a download event is triggered.
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*/
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get animateNotifications() {
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return PrefObserver.animateNotifications;
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},
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/**
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* Indicates whether we should show the dropmarker in the Downloads Panel.
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*/
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get showPanelDropmarker() {
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return PrefObserver.showPanelDropmarker;
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},
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/**
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* Get access to one of the DownloadsData or PrivateDownloadsData objects,
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* depending on the privacy status of the window in question.
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*
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* @param aWindow
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* The browser window which owns the download button.
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*/
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getData(aWindow) {
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if (PrivateBrowsingUtils.isContentWindowPrivate(aWindow)) {
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return PrivateDownloadsData;
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} else {
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return DownloadsData;
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}
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},
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/**
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* Initializes the Downloads back-end and starts receiving events for both the
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* private and non-private downloads data objects.
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*/
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initializeAllDataLinks() {
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DownloadsData.initializeDataLink();
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PrivateDownloadsData.initializeDataLink();
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},
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/**
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* Get access to one of the DownloadsIndicatorData or
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* PrivateDownloadsIndicatorData objects, depending on the privacy status of
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* the window in question.
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*/
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getIndicatorData(aWindow) {
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if (PrivateBrowsingUtils.isContentWindowPrivate(aWindow)) {
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return PrivateDownloadsIndicatorData;
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} else {
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return DownloadsIndicatorData;
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}
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},
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/**
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* Returns a reference to the DownloadsSummaryData singleton - creating one
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* in the process if one hasn't been instantiated yet.
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*
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* @param aWindow
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* The browser window which owns the download button.
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* @param aNumToExclude
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* The number of items on the top of the downloads list to exclude
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* from the summary.
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*/
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getSummary(aWindow, aNumToExclude) {
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if (PrivateBrowsingUtils.isContentWindowPrivate(aWindow)) {
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if (this._privateSummary) {
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return this._privateSummary;
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}
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return this._privateSummary = new DownloadsSummaryData(true, aNumToExclude);
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} else {
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if (this._summary) {
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return this._summary;
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}
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return this._summary = new DownloadsSummaryData(false, aNumToExclude);
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}
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},
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_summary: null,
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_privateSummary: null,
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/**
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* Returns the legacy state integer value for the provided Download object.
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*/
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stateOfDownload(download) {
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// Collapse state using the correct priority.
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if (!download.stopped) {
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return nsIDM.DOWNLOAD_DOWNLOADING;
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}
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if (download.succeeded) {
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return nsIDM.DOWNLOAD_FINISHED;
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}
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if (download.error) {
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if (download.error.becauseBlockedByParentalControls) {
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return nsIDM.DOWNLOAD_BLOCKED_PARENTAL;
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}
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if (download.error.becauseBlockedByReputationCheck) {
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return nsIDM.DOWNLOAD_DIRTY;
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}
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return nsIDM.DOWNLOAD_FAILED;
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}
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if (download.canceled) {
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if (download.hasPartialData) {
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return nsIDM.DOWNLOAD_PAUSED;
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}
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return nsIDM.DOWNLOAD_CANCELED;
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}
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return nsIDM.DOWNLOAD_NOTSTARTED;
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},
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/**
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* Helper function required because the Downloads Panel and the Downloads View
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* don't share the controller yet.
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*/
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removeAndFinalizeDownload(download) {
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Downloads.getList(Downloads.ALL)
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.then(list => list.remove(download))
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.then(() => download.finalize(true))
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.catch(Cu.reportError);
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},
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/**
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* Given an iterable collection of Download objects, generates and returns
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* statistics about that collection.
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*
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* @param downloads An iterable collection of Download objects.
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*
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* @return Object whose properties are the generated statistics. Currently,
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* we return the following properties:
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*
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* numActive : The total number of downloads.
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* numPaused : The total number of paused downloads.
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* numDownloading : The total number of downloads being downloaded.
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* totalSize : The total size of all downloads once completed.
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* totalTransferred: The total amount of transferred data for these
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* downloads.
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* slowestSpeed : The slowest download rate.
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* rawTimeLeft : The estimated time left for the downloads to
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* complete.
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* percentComplete : The percentage of bytes successfully downloaded.
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*/
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summarizeDownloads(downloads) {
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let summary = {
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numActive: 0,
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numPaused: 0,
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numDownloading: 0,
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totalSize: 0,
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totalTransferred: 0,
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// slowestSpeed is Infinity so that we can use Math.min to
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// find the slowest speed. We'll set this to 0 afterwards if
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// it's still at Infinity by the time we're done iterating all
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// download.
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slowestSpeed: Infinity,
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rawTimeLeft: -1,
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percentComplete: -1
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}
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for (let download of downloads) {
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summary.numActive++;
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if (!download.stopped) {
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summary.numDownloading++;
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if (download.hasProgress && download.speed > 0) {
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let sizeLeft = download.totalBytes - download.currentBytes;
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summary.rawTimeLeft = Math.max(summary.rawTimeLeft,
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sizeLeft / download.speed);
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summary.slowestSpeed = Math.min(summary.slowestSpeed,
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download.speed);
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}
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} else if (download.canceled && download.hasPartialData) {
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summary.numPaused++;
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}
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// Only add to total values if we actually know the download size.
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if (download.succeeded) {
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summary.totalSize += download.target.size;
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summary.totalTransferred += download.target.size;
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} else if (download.hasProgress) {
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summary.totalSize += download.totalBytes;
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summary.totalTransferred += download.currentBytes;
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}
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}
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if (summary.totalSize != 0) {
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summary.percentComplete = (summary.totalTransferred /
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summary.totalSize) * 100;
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}
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if (summary.slowestSpeed == Infinity) {
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summary.slowestSpeed = 0;
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}
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return summary;
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},
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/**
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* If necessary, smooths the estimated number of seconds remaining for one
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* or more downloads to complete.
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*
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* @param aSeconds
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* Current raw estimate on number of seconds left for one or more
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* downloads. This is a floating point value to help get sub-second
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* accuracy for current and future estimates.
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*/
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smoothSeconds(aSeconds, aLastSeconds) {
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// We apply an algorithm similar to the DownloadUtils.getTimeLeft function,
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// though tailored to a single time estimation for all downloads. We never
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// apply something if the new value is less than half the previous value.
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let shouldApplySmoothing = aLastSeconds >= 0 &&
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aSeconds > aLastSeconds / 2;
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if (shouldApplySmoothing) {
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// Apply hysteresis to favor downward over upward swings. Trust only 30%
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// of the new value if lower, and 10% if higher (exponential smoothing).
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let diff = aSeconds - aLastSeconds;
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aSeconds = aLastSeconds + (diff < 0 ? .3 : .1) * diff;
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// If the new time is similar, reuse something close to the last time
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// left, but subtract a little to provide forward progress.
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diff = aSeconds - aLastSeconds;
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let diffPercent = diff / aLastSeconds * 100;
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if (Math.abs(diff) < 5 || Math.abs(diffPercent) < 5) {
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aSeconds = aLastSeconds - (diff < 0 ? .4 : .2);
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}
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}
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// In the last few seconds of downloading, we are always subtracting and
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// never adding to the time left. Ensure that we never fall below one
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// second left until all downloads are actually finished.
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return aLastSeconds = Math.max(aSeconds, 1);
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},
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/**
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* Opens a downloaded file.
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*
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* @param aFile
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* the downloaded file to be opened.
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* @param aMimeInfo
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* the mime type info object. May be null.
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* @param aOwnerWindow
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* the window with which this action is associated.
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*/
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openDownloadedFile(aFile, aMimeInfo, aOwnerWindow) {
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if (!(aFile instanceof Ci.nsIFile)) {
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throw new Error("aFile must be a nsIFile object");
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}
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if (aMimeInfo && !(aMimeInfo instanceof Ci.nsIMIMEInfo)) {
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throw new Error("Invalid value passed for aMimeInfo");
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}
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if (!(aOwnerWindow instanceof Ci.nsIDOMWindow)) {
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throw new Error("aOwnerWindow must be a dom-window object");
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}
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let isWindowsExe = AppConstants.platform == "win" &&
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aFile.leafName.toLowerCase().endsWith(".exe");
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let promiseShouldLaunch;
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// Don't prompt on Windows for .exe since there will be a native prompt.
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if (aFile.isExecutable() && !isWindowsExe) {
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// We get a prompter for the provided window here, even though anchoring
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// to the most recently active window should work as well.
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promiseShouldLaunch =
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DownloadUIHelper.getPrompter(aOwnerWindow)
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.confirmLaunchExecutable(aFile.path);
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} else {
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promiseShouldLaunch = Promise.resolve(true);
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}
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promiseShouldLaunch.then(shouldLaunch => {
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if (!shouldLaunch) {
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return;
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}
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// Actually open the file.
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try {
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if (aMimeInfo && aMimeInfo.preferredAction == aMimeInfo.useHelperApp) {
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aMimeInfo.launchWithFile(aFile);
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return;
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}
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} catch (ex) { }
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// If either we don't have the mime info, or the preferred action failed,
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// attempt to launch the file directly.
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try {
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aFile.launch();
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} catch (ex) {
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// If launch fails, try sending it through the system's external "file:"
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// URL handler.
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Cc["@mozilla.org/uriloader/external-protocol-service;1"]
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.getService(Ci.nsIExternalProtocolService)
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.loadUrl(NetUtil.newURI(aFile));
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}
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}).then(null, Cu.reportError);
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},
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/**
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* Show a downloaded file in the system file manager.
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*
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* @param aFile
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* a downloaded file.
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*/
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showDownloadedFile(aFile) {
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if (!(aFile instanceof Ci.nsIFile)) {
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throw new Error("aFile must be a nsIFile object");
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}
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try {
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// Show the directory containing the file and select the file.
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aFile.reveal();
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} catch (ex) {
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// If reveal fails for some reason (e.g., it's not implemented on unix
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// or the file doesn't exist), try using the parent if we have it.
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let parent = aFile.parent;
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if (parent) {
|
|
this.showDirectory(parent);
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Show the specified folder in the system file manager.
|
|
*
|
|
* @param aDirectory
|
|
* a directory to be opened with system file manager.
|
|
*/
|
|
showDirectory(aDirectory) {
|
|
if (!(aDirectory instanceof Ci.nsIFile)) {
|
|
throw new Error("aDirectory must be a nsIFile object");
|
|
}
|
|
try {
|
|
aDirectory.launch();
|
|
} catch (ex) {
|
|
// If launch fails (probably because it's not implemented), let
|
|
// the OS handler try to open the directory.
|
|
Cc["@mozilla.org/uriloader/external-protocol-service;1"]
|
|
.getService(Ci.nsIExternalProtocolService)
|
|
.loadUrl(NetUtil.newURI(aDirectory));
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Displays an alert message box which asks the user if they want to
|
|
* unblock the downloaded file or not.
|
|
*
|
|
* @param options
|
|
* An object with the following properties:
|
|
* {
|
|
* verdict:
|
|
* The detailed reason why the download was blocked, according to
|
|
* the "Downloads.Error.BLOCK_VERDICT_" constants. If an unknown
|
|
* reason is specified, "Downloads.Error.BLOCK_VERDICT_MALWARE" is
|
|
* assumed.
|
|
* window:
|
|
* The window with which this action is associated.
|
|
* dialogType:
|
|
* String that determines which actions are available:
|
|
* - "unblock" to offer just "unblock".
|
|
* - "chooseUnblock" to offer "unblock" and "confirmBlock".
|
|
* - "chooseOpen" to offer "open" and "confirmBlock".
|
|
* }
|
|
*
|
|
* @return {Promise}
|
|
* @resolves String representing the action that should be executed:
|
|
* - "open" to allow the download and open the file.
|
|
* - "unblock" to allow the download without opening the file.
|
|
* - "confirmBlock" to delete the blocked data permanently.
|
|
* - "cancel" to do nothing and cancel the operation.
|
|
*/
|
|
confirmUnblockDownload: Task.async(function* ({ verdict, window,
|
|
dialogType }) {
|
|
let s = DownloadsCommon.strings;
|
|
|
|
// All the dialogs have an action button and a cancel button, while only
|
|
// some of them have an additonal button to remove the file. The cancel
|
|
// button must always be the one at BUTTON_POS_1 because this is the value
|
|
// returned by confirmEx when using ESC or closing the dialog (bug 345067).
|
|
let title = s.unblockHeaderUnblock;
|
|
let firstButtonText = s.unblockButtonUnblock;
|
|
let firstButtonAction = "unblock";
|
|
let buttonFlags =
|
|
(Ci.nsIPrompt.BUTTON_TITLE_IS_STRING * Ci.nsIPrompt.BUTTON_POS_0) +
|
|
(Ci.nsIPrompt.BUTTON_TITLE_CANCEL * Ci.nsIPrompt.BUTTON_POS_1);
|
|
|
|
switch (dialogType) {
|
|
case "unblock":
|
|
// Use only the unblock action. The default is to cancel.
|
|
buttonFlags += Ci.nsIPrompt.BUTTON_POS_1_DEFAULT;
|
|
break;
|
|
case "chooseUnblock":
|
|
// Use the unblock and remove file actions. The default is remove file.
|
|
buttonFlags +=
|
|
(Ci.nsIPrompt.BUTTON_TITLE_IS_STRING * Ci.nsIPrompt.BUTTON_POS_2) +
|
|
Ci.nsIPrompt.BUTTON_POS_2_DEFAULT;
|
|
break;
|
|
case "chooseOpen":
|
|
// Use the unblock and open file actions. The default is open file.
|
|
title = s.unblockHeaderOpen;
|
|
firstButtonText = s.unblockButtonOpen;
|
|
firstButtonAction = "open";
|
|
buttonFlags +=
|
|
(Ci.nsIPrompt.BUTTON_TITLE_IS_STRING * Ci.nsIPrompt.BUTTON_POS_2) +
|
|
Ci.nsIPrompt.BUTTON_POS_0_DEFAULT;
|
|
break;
|
|
default:
|
|
Cu.reportError("Unexpected dialog type: " + dialogType);
|
|
return "cancel";
|
|
}
|
|
|
|
let message;
|
|
switch (verdict) {
|
|
case Downloads.Error.BLOCK_VERDICT_UNCOMMON:
|
|
message = s.unblockTypeUncommon2;
|
|
break;
|
|
case Downloads.Error.BLOCK_VERDICT_POTENTIALLY_UNWANTED:
|
|
message = s.unblockTypePotentiallyUnwanted2;
|
|
break;
|
|
default: // Assume Downloads.Error.BLOCK_VERDICT_MALWARE
|
|
message = s.unblockTypeMalware;
|
|
break;
|
|
}
|
|
message += "\n\n" + s.unblockTip2;
|
|
|
|
Services.ww.registerNotification(function onOpen(subj, topic) {
|
|
if (topic == "domwindowopened" && subj instanceof Ci.nsIDOMWindow) {
|
|
// Make sure to listen for "DOMContentLoaded" because it is fired
|
|
// before the "load" event.
|
|
subj.addEventListener("DOMContentLoaded", function onLoad() {
|
|
subj.removeEventListener("DOMContentLoaded", onLoad);
|
|
if (subj.document.documentURI ==
|
|
"chrome://global/content/commonDialog.xul") {
|
|
Services.ww.unregisterNotification(onOpen);
|
|
let dialog = subj.document.getElementById("commonDialog");
|
|
if (dialog) {
|
|
// Change the dialog to use a warning icon.
|
|
dialog.classList.add("alert-dialog");
|
|
}
|
|
}
|
|
});
|
|
}
|
|
});
|
|
|
|
let rv = Services.prompt.confirmEx(window, title, message, buttonFlags,
|
|
firstButtonText, null,
|
|
s.unblockButtonConfirmBlock, null, {});
|
|
return [firstButtonAction, "cancel", "confirmBlock"][rv];
|
|
}),
|
|
};
|
|
|
|
XPCOMUtils.defineLazyGetter(this.DownloadsCommon, "log", () => {
|
|
return DownloadsLogger.log.bind(DownloadsLogger);
|
|
});
|
|
XPCOMUtils.defineLazyGetter(this.DownloadsCommon, "error", () => {
|
|
return DownloadsLogger.error.bind(DownloadsLogger);
|
|
});
|
|
|
|
/**
|
|
* Returns true if we are executing on Windows Vista or a later version.
|
|
*/
|
|
XPCOMUtils.defineLazyGetter(DownloadsCommon, "isWinVistaOrHigher", function () {
|
|
let os = Cc["@mozilla.org/xre/app-info;1"].getService(Ci.nsIXULRuntime).OS;
|
|
if (os != "WINNT") {
|
|
return false;
|
|
}
|
|
let sysInfo = Cc["@mozilla.org/system-info;1"].getService(Ci.nsIPropertyBag2);
|
|
return parseFloat(sysInfo.getProperty("version")) >= 6;
|
|
});
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//// DownloadsData
|
|
|
|
/**
|
|
* Retrieves the list of past and completed downloads from the underlying
|
|
* Download Manager data, and provides asynchronous notifications allowing to
|
|
* build a consistent view of the available data.
|
|
*
|
|
* This object responds to real-time changes in the underlying Download Manager
|
|
* data. For example, the deletion of one or more downloads is notified through
|
|
* the nsIObserver interface, while any state or progress change is notified
|
|
* through the nsIDownloadProgressListener interface.
|
|
*
|
|
* Note that using this object does not automatically start the Download Manager
|
|
* service. Consumers will see an empty list of downloads until the service is
|
|
* actually started. This is useful to display a neutral progress indicator in
|
|
* the main browser window until the autostart timeout elapses.
|
|
*
|
|
* Note that DownloadsData and PrivateDownloadsData are two equivalent singleton
|
|
* objects, one accessing non-private downloads, and the other accessing private
|
|
* ones.
|
|
*/
|
|
function DownloadsDataCtor(aPrivate) {
|
|
this._isPrivate = aPrivate;
|
|
|
|
// Contains all the available Download objects and their integer state.
|
|
this.oldDownloadStates = new Map();
|
|
|
|
// Array of view objects that should be notified when the available download
|
|
// data changes.
|
|
this._views = [];
|
|
}
|
|
|
|
DownloadsDataCtor.prototype = {
|
|
/**
|
|
* Starts receiving events for current downloads.
|
|
*/
|
|
initializeDataLink() {
|
|
if (!this._dataLinkInitialized) {
|
|
let promiseList = Downloads.getList(this._isPrivate ? Downloads.PRIVATE
|
|
: Downloads.PUBLIC);
|
|
promiseList.then(list => list.addView(this)).then(null, Cu.reportError);
|
|
this._dataLinkInitialized = true;
|
|
}
|
|
},
|
|
_dataLinkInitialized: false,
|
|
|
|
/**
|
|
* Iterator for all the available Download objects. This is empty until the
|
|
* data has been loaded using the JavaScript API for downloads.
|
|
*/
|
|
get downloads() {
|
|
return this.oldDownloadStates.keys();
|
|
},
|
|
|
|
/**
|
|
* True if there are finished downloads that can be removed from the list.
|
|
*/
|
|
get canRemoveFinished() {
|
|
for (let download of this.downloads) {
|
|
// Stopped, paused, and failed downloads with partial data are removed.
|
|
if (download.stopped && !(download.canceled && download.hasPartialData)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
},
|
|
|
|
/**
|
|
* Asks the back-end to remove finished downloads from the list.
|
|
*/
|
|
removeFinished() {
|
|
let promiseList = Downloads.getList(this._isPrivate ? Downloads.PRIVATE
|
|
: Downloads.PUBLIC);
|
|
promiseList.then(list => list.removeFinished())
|
|
.then(null, Cu.reportError);
|
|
let indicatorData = this._isPrivate ? PrivateDownloadsIndicatorData
|
|
: DownloadsIndicatorData;
|
|
indicatorData.attention = DownloadsCommon.ATTENTION_NONE;
|
|
},
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//// Integration with the asynchronous Downloads back-end
|
|
|
|
onDownloadAdded(download) {
|
|
// Download objects do not store the end time of downloads, as the Downloads
|
|
// API does not need to persist this information for all platforms. Once a
|
|
// download terminates on a Desktop browser, it becomes a history download,
|
|
// for which the end time is stored differently, as a Places annotation.
|
|
download.endTime = Date.now();
|
|
|
|
this.oldDownloadStates.set(download,
|
|
DownloadsCommon.stateOfDownload(download));
|
|
|
|
for (let view of this._views) {
|
|
view.onDownloadAdded(download, true);
|
|
}
|
|
},
|
|
|
|
onDownloadChanged(download) {
|
|
let oldState = this.oldDownloadStates.get(download);
|
|
let newState = DownloadsCommon.stateOfDownload(download);
|
|
this.oldDownloadStates.set(download, newState);
|
|
|
|
if (oldState != newState) {
|
|
if (download.succeeded ||
|
|
(download.canceled && !download.hasPartialData) ||
|
|
download.error) {
|
|
// Store the end time that may be displayed by the views.
|
|
download.endTime = Date.now();
|
|
|
|
// This state transition code should actually be located in a Downloads
|
|
// API module (bug 941009). Moreover, the fact that state is stored as
|
|
// annotations should be ideally hidden behind methods of
|
|
// nsIDownloadHistory (bug 830415).
|
|
if (!this._isPrivate) {
|
|
try {
|
|
let downloadMetaData = {
|
|
state: DownloadsCommon.stateOfDownload(download),
|
|
endTime: download.endTime,
|
|
};
|
|
if (download.succeeded) {
|
|
downloadMetaData.fileSize = download.target.size;
|
|
}
|
|
if (download.error && download.error.reputationCheckVerdict) {
|
|
downloadMetaData.reputationCheckVerdict =
|
|
download.error.reputationCheckVerdict;
|
|
}
|
|
|
|
PlacesUtils.annotations.setPageAnnotation(
|
|
NetUtil.newURI(download.source.url),
|
|
"downloads/metaData",
|
|
JSON.stringify(downloadMetaData), 0,
|
|
PlacesUtils.annotations.EXPIRE_WITH_HISTORY);
|
|
} catch (ex) {
|
|
Cu.reportError(ex);
|
|
}
|
|
}
|
|
}
|
|
|
|
for (let view of this._views) {
|
|
try {
|
|
view.onDownloadStateChanged(download);
|
|
} catch (ex) {
|
|
Cu.reportError(ex);
|
|
}
|
|
}
|
|
|
|
if (download.succeeded ||
|
|
(download.error && download.error.becauseBlocked)) {
|
|
this._notifyDownloadEvent("finish");
|
|
}
|
|
}
|
|
|
|
if (!download.newDownloadNotified) {
|
|
download.newDownloadNotified = true;
|
|
this._notifyDownloadEvent("start");
|
|
}
|
|
|
|
for (let view of this._views) {
|
|
view.onDownloadChanged(download);
|
|
}
|
|
},
|
|
|
|
onDownloadRemoved(download) {
|
|
this.oldDownloadStates.delete(download);
|
|
|
|
for (let view of this._views) {
|
|
view.onDownloadRemoved(download);
|
|
}
|
|
},
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//// Registration of views
|
|
|
|
/**
|
|
* Adds an object to be notified when the available download data changes.
|
|
* The specified object is initialized with the currently available downloads.
|
|
*
|
|
* @param aView
|
|
* DownloadsView object to be added. This reference must be passed to
|
|
* removeView before termination.
|
|
*/
|
|
addView(aView) {
|
|
this._views.push(aView);
|
|
this._updateView(aView);
|
|
},
|
|
|
|
/**
|
|
* Removes an object previously added using addView.
|
|
*
|
|
* @param aView
|
|
* DownloadsView object to be removed.
|
|
*/
|
|
removeView(aView) {
|
|
let index = this._views.indexOf(aView);
|
|
if (index != -1) {
|
|
this._views.splice(index, 1);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Ensures that the currently loaded data is added to the specified view.
|
|
*
|
|
* @param aView
|
|
* DownloadsView object to be initialized.
|
|
*/
|
|
_updateView(aView) {
|
|
// Indicate to the view that a batch loading operation is in progress.
|
|
aView.onDataLoadStarting();
|
|
|
|
// Sort backwards by start time, ensuring that the most recent
|
|
// downloads are added first regardless of their state.
|
|
let downloadsArray = [...this.downloads];
|
|
downloadsArray.sort((a, b) => b.startTime - a.startTime);
|
|
downloadsArray.forEach(download => aView.onDownloadAdded(download, false));
|
|
|
|
// Notify the view that all data is available.
|
|
aView.onDataLoadCompleted();
|
|
},
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//// Notifications sent to the most recent browser window only
|
|
|
|
/**
|
|
* Set to true after the first download causes the downloads panel to be
|
|
* displayed.
|
|
*/
|
|
get panelHasShownBefore() {
|
|
try {
|
|
return Services.prefs.getBoolPref("browser.download.panel.shown");
|
|
} catch (ex) { }
|
|
return false;
|
|
},
|
|
|
|
set panelHasShownBefore(aValue) {
|
|
Services.prefs.setBoolPref("browser.download.panel.shown", aValue);
|
|
return aValue;
|
|
},
|
|
|
|
/**
|
|
* Displays a new or finished download notification in the most recent browser
|
|
* window, if one is currently available with the required privacy type.
|
|
*
|
|
* @param aType
|
|
* Set to "start" for new downloads, "finish" for completed downloads.
|
|
*/
|
|
_notifyDownloadEvent(aType) {
|
|
DownloadsCommon.log("Attempting to notify that a new download has started or finished.");
|
|
|
|
// Show the panel in the most recent browser window, if present.
|
|
let browserWin = RecentWindow.getMostRecentBrowserWindow({ private: this._isPrivate });
|
|
if (!browserWin) {
|
|
return;
|
|
}
|
|
|
|
if (this.panelHasShownBefore) {
|
|
// For new downloads after the first one, don't show the panel
|
|
// automatically, but provide a visible notification in the topmost
|
|
// browser window, if the status indicator is already visible.
|
|
DownloadsCommon.log("Showing new download notification.");
|
|
browserWin.DownloadsIndicatorView.showEventNotification(aType);
|
|
return;
|
|
}
|
|
this.panelHasShownBefore = true;
|
|
browserWin.DownloadsPanel.showPanel();
|
|
}
|
|
};
|
|
|
|
XPCOMUtils.defineLazyGetter(this, "PrivateDownloadsData", function() {
|
|
return new DownloadsDataCtor(true);
|
|
});
|
|
|
|
XPCOMUtils.defineLazyGetter(this, "DownloadsData", function() {
|
|
return new DownloadsDataCtor(false);
|
|
});
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//// DownloadsViewPrototype
|
|
|
|
/**
|
|
* A prototype for an object that registers itself with DownloadsData as soon
|
|
* as a view is registered with it.
|
|
*/
|
|
const DownloadsViewPrototype = {
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//// Registration of views
|
|
|
|
/**
|
|
* Array of view objects that should be notified when the available status
|
|
* data changes.
|
|
*
|
|
* SUBCLASSES MUST OVERRIDE THIS PROPERTY.
|
|
*/
|
|
_views: null,
|
|
|
|
/**
|
|
* Determines whether this view object is over the private or non-private
|
|
* downloads.
|
|
*
|
|
* SUBCLASSES MUST OVERRIDE THIS PROPERTY.
|
|
*/
|
|
_isPrivate: false,
|
|
|
|
/**
|
|
* Adds an object to be notified when the available status data changes.
|
|
* The specified object is initialized with the currently available status.
|
|
*
|
|
* @param aView
|
|
* View object to be added. This reference must be
|
|
* passed to removeView before termination.
|
|
*/
|
|
addView(aView) {
|
|
// Start receiving events when the first of our views is registered.
|
|
if (this._views.length == 0) {
|
|
if (this._isPrivate) {
|
|
PrivateDownloadsData.addView(this);
|
|
} else {
|
|
DownloadsData.addView(this);
|
|
}
|
|
}
|
|
|
|
this._views.push(aView);
|
|
this.refreshView(aView);
|
|
},
|
|
|
|
/**
|
|
* Updates the properties of an object previously added using addView.
|
|
*
|
|
* @param aView
|
|
* View object to be updated.
|
|
*/
|
|
refreshView(aView) {
|
|
// Update immediately even if we are still loading data asynchronously.
|
|
// Subclasses must provide these two functions!
|
|
this._refreshProperties();
|
|
this._updateView(aView);
|
|
},
|
|
|
|
/**
|
|
* Removes an object previously added using addView.
|
|
*
|
|
* @param aView
|
|
* View object to be removed.
|
|
*/
|
|
removeView(aView) {
|
|
let index = this._views.indexOf(aView);
|
|
if (index != -1) {
|
|
this._views.splice(index, 1);
|
|
}
|
|
|
|
// Stop receiving events when the last of our views is unregistered.
|
|
if (this._views.length == 0) {
|
|
if (this._isPrivate) {
|
|
PrivateDownloadsData.removeView(this);
|
|
} else {
|
|
DownloadsData.removeView(this);
|
|
}
|
|
}
|
|
},
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//// Callback functions from DownloadsData
|
|
|
|
/**
|
|
* Indicates whether we are still loading downloads data asynchronously.
|
|
*/
|
|
_loading: false,
|
|
|
|
/**
|
|
* Called before multiple downloads are about to be loaded.
|
|
*/
|
|
onDataLoadStarting() {
|
|
this._loading = true;
|
|
},
|
|
|
|
/**
|
|
* Called after data loading finished.
|
|
*/
|
|
onDataLoadCompleted() {
|
|
this._loading = false;
|
|
},
|
|
|
|
/**
|
|
* Called when a new download data item is available, either during the
|
|
* asynchronous data load or when a new download is started.
|
|
*
|
|
* @param download
|
|
* Download object that was just added.
|
|
* @param newest
|
|
* When true, indicates that this item is the most recent and should be
|
|
* added in the topmost position. This happens when a new download is
|
|
* started. When false, indicates that the item is the least recent
|
|
* with regard to the items that have been already added. The latter
|
|
* generally happens during the asynchronous data load.
|
|
*
|
|
* @note Subclasses should override this.
|
|
*/
|
|
onDownloadAdded(download, newest) {
|
|
throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
|
|
},
|
|
|
|
/**
|
|
* Called when the overall state of a Download has changed. In particular,
|
|
* this is called only once when the download succeeds or is blocked
|
|
* permanently, and is never called if only the current progress changed.
|
|
*
|
|
* The onDownloadChanged notification will always be sent afterwards.
|
|
*
|
|
* @note Subclasses should override this.
|
|
*/
|
|
onDownloadStateChanged(download) {
|
|
throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
|
|
},
|
|
|
|
/**
|
|
* Called every time any state property of a Download may have changed,
|
|
* including progress properties.
|
|
*
|
|
* Note that progress notification changes are throttled at the Downloads.jsm
|
|
* API level, and there is no throttling mechanism in the front-end.
|
|
*
|
|
* @note Subclasses should override this.
|
|
*/
|
|
onDownloadChanged(download) {
|
|
throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
|
|
},
|
|
|
|
/**
|
|
* Called when a data item is removed, ensures that the widget associated with
|
|
* the view item is removed from the user interface.
|
|
*
|
|
* @param download
|
|
* Download object that is being removed.
|
|
*
|
|
* @note Subclasses should override this.
|
|
*/
|
|
onDownloadRemoved(download) {
|
|
throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
|
|
},
|
|
|
|
/**
|
|
* Private function used to refresh the internal properties being sent to
|
|
* each registered view.
|
|
*
|
|
* @note Subclasses should override this.
|
|
*/
|
|
_refreshProperties() {
|
|
throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
|
|
},
|
|
|
|
/**
|
|
* Private function used to refresh an individual view.
|
|
*
|
|
* @note Subclasses should override this.
|
|
*/
|
|
_updateView() {
|
|
throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
|
|
},
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//// DownloadsIndicatorData
|
|
|
|
/**
|
|
* This object registers itself with DownloadsData as a view, and transforms the
|
|
* notifications it receives into overall status data, that is then broadcast to
|
|
* the registered download status indicators.
|
|
*
|
|
* Note that using this object does not automatically start the Download Manager
|
|
* service. Consumers will see an empty list of downloads until the service is
|
|
* actually started. This is useful to display a neutral progress indicator in
|
|
* the main browser window until the autostart timeout elapses.
|
|
*/
|
|
function DownloadsIndicatorDataCtor(aPrivate) {
|
|
this._isPrivate = aPrivate;
|
|
this._views = [];
|
|
}
|
|
DownloadsIndicatorDataCtor.prototype = {
|
|
__proto__: DownloadsViewPrototype,
|
|
|
|
/**
|
|
* Removes an object previously added using addView.
|
|
*
|
|
* @param aView
|
|
* DownloadsIndicatorView object to be removed.
|
|
*/
|
|
removeView(aView) {
|
|
DownloadsViewPrototype.removeView.call(this, aView);
|
|
|
|
if (this._views.length == 0) {
|
|
this._itemCount = 0;
|
|
}
|
|
},
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//// Callback functions from DownloadsData
|
|
|
|
onDataLoadCompleted() {
|
|
DownloadsViewPrototype.onDataLoadCompleted.call(this);
|
|
this._updateViews();
|
|
},
|
|
|
|
onDownloadAdded(download, newest) {
|
|
this._itemCount++;
|
|
this._updateViews();
|
|
},
|
|
|
|
onDownloadStateChanged(download) {
|
|
if (!download.succeeded && download.error && download.error.reputationCheckVerdict) {
|
|
switch (download.error.reputationCheckVerdict) {
|
|
case Downloads.Error.BLOCK_VERDICT_UNCOMMON: // fall-through
|
|
case Downloads.Error.BLOCK_VERDICT_POTENTIALLY_UNWANTED:
|
|
// Existing higher level attention indication trumps ATTENTION_WARNING.
|
|
if (this._attention != DownloadsCommon.ATTENTION_SEVERE) {
|
|
this.attention = DownloadsCommon.ATTENTION_WARNING;
|
|
}
|
|
break;
|
|
case Downloads.Error.BLOCK_VERDICT_MALWARE:
|
|
this.attention = DownloadsCommon.ATTENTION_SEVERE;
|
|
break;
|
|
default:
|
|
this.attention = DownloadsCommon.ATTENTION_SEVERE;
|
|
Cu.reportError("Unknown reputation verdict: " +
|
|
download.error.reputationCheckVerdict);
|
|
}
|
|
} else if (download.succeeded) {
|
|
// Existing higher level attention indication trumps ATTENTION_SUCCESS.
|
|
if (this._attention != DownloadsCommon.ATTENTION_SEVERE &&
|
|
this._attention != DownloadsCommon.ATTENTION_WARNING) {
|
|
this.attention = DownloadsCommon.ATTENTION_SUCCESS;
|
|
}
|
|
} else if (download.error) {
|
|
// Existing higher level attention indication trumps ATTENTION_WARNING.
|
|
if (this._attention != DownloadsCommon.ATTENTION_SEVERE) {
|
|
this.attention = DownloadsCommon.ATTENTION_WARNING;
|
|
}
|
|
}
|
|
|
|
// Since the state of a download changed, reset the estimated time left.
|
|
this._lastRawTimeLeft = -1;
|
|
this._lastTimeLeft = -1;
|
|
},
|
|
|
|
onDownloadChanged(download) {
|
|
this._updateViews();
|
|
},
|
|
|
|
onDownloadRemoved(download) {
|
|
this._itemCount--;
|
|
this._updateViews();
|
|
},
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//// Propagation of properties to our views
|
|
|
|
// The following properties are updated by _refreshProperties and are then
|
|
// propagated to the views. See _refreshProperties for details.
|
|
_hasDownloads: false,
|
|
_counter: "",
|
|
_percentComplete: -1,
|
|
_paused: false,
|
|
|
|
/**
|
|
* Indicates whether the download indicators should be highlighted.
|
|
*/
|
|
set attention(aValue) {
|
|
this._attention = aValue;
|
|
this._updateViews();
|
|
return aValue;
|
|
},
|
|
_attention: DownloadsCommon.ATTENTION_NONE,
|
|
|
|
/**
|
|
* Indicates whether the user is interacting with downloads, thus the
|
|
* attention indication should not be shown even if requested.
|
|
*/
|
|
set attentionSuppressed(aValue) {
|
|
this._attentionSuppressed = aValue;
|
|
this._attention = DownloadsCommon.ATTENTION_NONE;
|
|
this._updateViews();
|
|
return aValue;
|
|
},
|
|
_attentionSuppressed: false,
|
|
|
|
/**
|
|
* Computes aggregate values and propagates the changes to our views.
|
|
*/
|
|
_updateViews() {
|
|
// Do not update the status indicators during batch loads of download items.
|
|
if (this._loading) {
|
|
return;
|
|
}
|
|
|
|
this._refreshProperties();
|
|
this._views.forEach(this._updateView, this);
|
|
},
|
|
|
|
/**
|
|
* Updates the specified view with the current aggregate values.
|
|
*
|
|
* @param aView
|
|
* DownloadsIndicatorView object to be updated.
|
|
*/
|
|
_updateView(aView) {
|
|
aView.hasDownloads = this._hasDownloads;
|
|
aView.counter = this._counter;
|
|
aView.percentComplete = this._percentComplete;
|
|
aView.paused = this._paused;
|
|
aView.attention = this._attentionSuppressed ? DownloadsCommon.ATTENTION_NONE
|
|
: this._attention;
|
|
},
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//// Property updating based on current download status
|
|
|
|
/**
|
|
* Number of download items that are available to be displayed.
|
|
*/
|
|
_itemCount: 0,
|
|
|
|
/**
|
|
* Floating point value indicating the last number of seconds estimated until
|
|
* the longest download will finish. We need to store this value so that we
|
|
* don't continuously apply smoothing if the actual download state has not
|
|
* changed. This is set to -1 if the previous value is unknown.
|
|
*/
|
|
_lastRawTimeLeft: -1,
|
|
|
|
/**
|
|
* Last number of seconds estimated until all in-progress downloads with a
|
|
* known size and speed will finish. This value is stored to allow smoothing
|
|
* in case of small variations. This is set to -1 if the previous value is
|
|
* unknown.
|
|
*/
|
|
_lastTimeLeft: -1,
|
|
|
|
/**
|
|
* A generator function for the Download objects this summary is currently
|
|
* interested in. This generator is passed off to summarizeDownloads in order
|
|
* to generate statistics about the downloads we care about - in this case,
|
|
* it's all active downloads.
|
|
*/
|
|
* _activeDownloads() {
|
|
let downloads = this._isPrivate ? PrivateDownloadsData.downloads
|
|
: DownloadsData.downloads;
|
|
for (let download of downloads) {
|
|
if (!download.stopped || (download.canceled && download.hasPartialData)) {
|
|
yield download;
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Computes aggregate values based on the current state of downloads.
|
|
*/
|
|
_refreshProperties() {
|
|
let summary =
|
|
DownloadsCommon.summarizeDownloads(this._activeDownloads());
|
|
|
|
// Determine if the indicator should be shown or get attention.
|
|
this._hasDownloads = (this._itemCount > 0);
|
|
|
|
// If all downloads are paused, show the progress indicator as paused.
|
|
this._paused = summary.numActive > 0 &&
|
|
summary.numActive == summary.numPaused;
|
|
|
|
this._percentComplete = summary.percentComplete;
|
|
|
|
// Display the estimated time left, if present.
|
|
if (summary.rawTimeLeft == -1) {
|
|
// There are no downloads with a known time left.
|
|
this._lastRawTimeLeft = -1;
|
|
this._lastTimeLeft = -1;
|
|
this._counter = "";
|
|
} else {
|
|
// Compute the new time left only if state actually changed.
|
|
if (this._lastRawTimeLeft != summary.rawTimeLeft) {
|
|
this._lastRawTimeLeft = summary.rawTimeLeft;
|
|
this._lastTimeLeft = DownloadsCommon.smoothSeconds(summary.rawTimeLeft,
|
|
this._lastTimeLeft);
|
|
}
|
|
this._counter = DownloadsCommon.formatTimeLeft(this._lastTimeLeft);
|
|
}
|
|
}
|
|
};
|
|
|
|
XPCOMUtils.defineLazyGetter(this, "PrivateDownloadsIndicatorData", function() {
|
|
return new DownloadsIndicatorDataCtor(true);
|
|
});
|
|
|
|
XPCOMUtils.defineLazyGetter(this, "DownloadsIndicatorData", function() {
|
|
return new DownloadsIndicatorDataCtor(false);
|
|
});
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//// DownloadsSummaryData
|
|
|
|
/**
|
|
* DownloadsSummaryData is a view for DownloadsData that produces a summary
|
|
* of all downloads after a certain exclusion point aNumToExclude. For example,
|
|
* if there were 5 downloads in progress, and a DownloadsSummaryData was
|
|
* constructed with aNumToExclude equal to 3, then that DownloadsSummaryData
|
|
* would produce a summary of the last 2 downloads.
|
|
*
|
|
* @param aIsPrivate
|
|
* True if the browser window which owns the download button is a private
|
|
* window.
|
|
* @param aNumToExclude
|
|
* The number of items to exclude from the summary, starting from the
|
|
* top of the list.
|
|
*/
|
|
function DownloadsSummaryData(aIsPrivate, aNumToExclude) {
|
|
this._numToExclude = aNumToExclude;
|
|
// Since we can have multiple instances of DownloadsSummaryData, we
|
|
// override these values from the prototype so that each instance can be
|
|
// completely separated from one another.
|
|
this._loading = false;
|
|
|
|
this._downloads = [];
|
|
|
|
// Floating point value indicating the last number of seconds estimated until
|
|
// the longest download will finish. We need to store this value so that we
|
|
// don't continuously apply smoothing if the actual download state has not
|
|
// changed. This is set to -1 if the previous value is unknown.
|
|
this._lastRawTimeLeft = -1;
|
|
|
|
// Last number of seconds estimated until all in-progress downloads with a
|
|
// known size and speed will finish. This value is stored to allow smoothing
|
|
// in case of small variations. This is set to -1 if the previous value is
|
|
// unknown.
|
|
this._lastTimeLeft = -1;
|
|
|
|
// The following properties are updated by _refreshProperties and are then
|
|
// propagated to the views.
|
|
this._showingProgress = false;
|
|
this._details = "";
|
|
this._description = "";
|
|
this._numActive = 0;
|
|
this._percentComplete = -1;
|
|
|
|
this._isPrivate = aIsPrivate;
|
|
this._views = [];
|
|
}
|
|
|
|
DownloadsSummaryData.prototype = {
|
|
__proto__: DownloadsViewPrototype,
|
|
|
|
/**
|
|
* Removes an object previously added using addView.
|
|
*
|
|
* @param aView
|
|
* DownloadsSummary view to be removed.
|
|
*/
|
|
removeView(aView) {
|
|
DownloadsViewPrototype.removeView.call(this, aView);
|
|
|
|
if (this._views.length == 0) {
|
|
// Clear out our collection of Download objects. If we ever have
|
|
// another view registered with us, this will get re-populated.
|
|
this._downloads = [];
|
|
}
|
|
},
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//// Callback functions from DownloadsData - see the documentation in
|
|
//// DownloadsViewPrototype for more information on what these functions
|
|
//// are used for.
|
|
|
|
onDataLoadCompleted() {
|
|
DownloadsViewPrototype.onDataLoadCompleted.call(this);
|
|
this._updateViews();
|
|
},
|
|
|
|
onDownloadAdded(download, newest) {
|
|
if (newest) {
|
|
this._downloads.unshift(download);
|
|
} else {
|
|
this._downloads.push(download);
|
|
}
|
|
|
|
this._updateViews();
|
|
},
|
|
|
|
onDownloadStateChanged() {
|
|
// Since the state of a download changed, reset the estimated time left.
|
|
this._lastRawTimeLeft = -1;
|
|
this._lastTimeLeft = -1;
|
|
},
|
|
|
|
onDownloadChanged() {
|
|
this._updateViews();
|
|
},
|
|
|
|
onDownloadRemoved(download) {
|
|
let itemIndex = this._downloads.indexOf(download);
|
|
this._downloads.splice(itemIndex, 1);
|
|
this._updateViews();
|
|
},
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//// Propagation of properties to our views
|
|
|
|
/**
|
|
* Computes aggregate values and propagates the changes to our views.
|
|
*/
|
|
_updateViews() {
|
|
// Do not update the status indicators during batch loads of download items.
|
|
if (this._loading) {
|
|
return;
|
|
}
|
|
|
|
this._refreshProperties();
|
|
this._views.forEach(this._updateView, this);
|
|
},
|
|
|
|
/**
|
|
* Updates the specified view with the current aggregate values.
|
|
*
|
|
* @param aView
|
|
* DownloadsIndicatorView object to be updated.
|
|
*/
|
|
_updateView(aView) {
|
|
aView.showingProgress = this._showingProgress;
|
|
aView.percentComplete = this._percentComplete;
|
|
aView.description = this._description;
|
|
aView.details = this._details;
|
|
},
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//// Property updating based on current download status
|
|
|
|
/**
|
|
* A generator function for the Download objects this summary is currently
|
|
* interested in. This generator is passed off to summarizeDownloads in order
|
|
* to generate statistics about the downloads we care about - in this case,
|
|
* it's the downloads in this._downloads after the first few to exclude,
|
|
* which was set when constructing this DownloadsSummaryData instance.
|
|
*/
|
|
* _downloadsForSummary() {
|
|
if (this._downloads.length > 0) {
|
|
for (let i = this._numToExclude; i < this._downloads.length; ++i) {
|
|
yield this._downloads[i];
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Computes aggregate values based on the current state of downloads.
|
|
*/
|
|
_refreshProperties() {
|
|
// Pre-load summary with default values.
|
|
let summary =
|
|
DownloadsCommon.summarizeDownloads(this._downloadsForSummary());
|
|
|
|
this._description = DownloadsCommon.strings
|
|
.otherDownloads2(summary.numActive);
|
|
this._percentComplete = summary.percentComplete;
|
|
|
|
// If all downloads are paused, show the progress indicator as paused.
|
|
this._showingProgress = summary.numDownloading > 0 ||
|
|
summary.numPaused > 0;
|
|
|
|
// Display the estimated time left, if present.
|
|
if (summary.rawTimeLeft == -1) {
|
|
// There are no downloads with a known time left.
|
|
this._lastRawTimeLeft = -1;
|
|
this._lastTimeLeft = -1;
|
|
this._details = "";
|
|
} else {
|
|
// Compute the new time left only if state actually changed.
|
|
if (this._lastRawTimeLeft != summary.rawTimeLeft) {
|
|
this._lastRawTimeLeft = summary.rawTimeLeft;
|
|
this._lastTimeLeft = DownloadsCommon.smoothSeconds(summary.rawTimeLeft,
|
|
this._lastTimeLeft);
|
|
}
|
|
[this._details] = DownloadUtils.getDownloadStatusNoRate(
|
|
summary.totalTransferred, summary.totalSize, summary.slowestSpeed,
|
|
this._lastTimeLeft);
|
|
}
|
|
},
|
|
}
|