зеркало из https://github.com/mozilla/gecko-dev.git
395 строки
13 KiB
JavaScript
395 строки
13 KiB
JavaScript
/* -*- Mode: JavaScript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
* vim: sw=2 ts=2 sts=2 et filetype=javascript
|
|
* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is Windows Download Taskbar Progress.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Siddharth Agarwal <sid.bugzilla@gmail.com>
|
|
* Portions created by the Initial Developer are Copyright (C) 2009
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
let EXPORTED_SYMBOLS = [
|
|
"DownloadTaskbarProgress",
|
|
];
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//// Constants
|
|
|
|
const Cc = Components.classes;
|
|
const Ci = Components.interfaces;
|
|
|
|
const kTaskbarID = "@mozilla.org/windows-taskbar;1";
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//// DownloadTaskbarProgress Object
|
|
|
|
const DownloadTaskbarProgress =
|
|
{
|
|
/**
|
|
* Called when a browser window appears. This has an effect only when we
|
|
* don't already have an active window.
|
|
*
|
|
* @param aWindow
|
|
* The browser window that we'll potentially use to display the
|
|
* progress.
|
|
*/
|
|
onBrowserWindowLoad: function DTP_onBrowserWindowLoad(aWindow)
|
|
{
|
|
if (!DownloadTaskbarProgressUpdater) {
|
|
return;
|
|
}
|
|
if (!DownloadTaskbarProgressUpdater._activeTaskbarProgress) {
|
|
DownloadTaskbarProgressUpdater._setActiveWindow(aWindow, false);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Called when the download window appears. The download window will take
|
|
* over as the active window.
|
|
*/
|
|
onDownloadWindowLoad: function DTP_onDownloadWindowLoad(aWindow)
|
|
{
|
|
if (!DownloadTaskbarProgressUpdater) {
|
|
return;
|
|
}
|
|
DownloadTaskbarProgressUpdater._setActiveWindow(aWindow, true);
|
|
},
|
|
|
|
/**
|
|
* Getters for internal DownloadTaskbarProgressUpdater values
|
|
*/
|
|
|
|
get activeTaskbarProgress() {
|
|
if (!DownloadTaskbarProgressUpdater) {
|
|
return null;
|
|
}
|
|
return DownloadTaskbarProgressUpdater._activeTaskbarProgress;
|
|
},
|
|
|
|
get activeWindowIsDownloadWindow() {
|
|
if (!DownloadTaskbarProgressUpdater) {
|
|
return null;
|
|
}
|
|
return DownloadTaskbarProgressUpdater._activeWindowIsDownloadWindow;
|
|
},
|
|
|
|
get taskbarState() {
|
|
if (!DownloadTaskbarProgressUpdater) {
|
|
return null;
|
|
}
|
|
return DownloadTaskbarProgressUpdater._taskbarState;
|
|
},
|
|
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//// DownloadTaskbarProgressUpdater Object
|
|
|
|
var DownloadTaskbarProgressUpdater =
|
|
{
|
|
/// Reference to the taskbar.
|
|
_taskbar: null,
|
|
|
|
/// Reference to the download manager.
|
|
_dm: null,
|
|
|
|
/**
|
|
* Initialize and register ourselves as a download progress listener.
|
|
*/
|
|
_init: function DTPU_init()
|
|
{
|
|
if (!(kTaskbarID in Cc)) {
|
|
// This means that the component isn't available
|
|
DownloadTaskbarProgressUpdater = null;
|
|
return;
|
|
}
|
|
|
|
this._taskbar = Cc[kTaskbarID].getService(Ci.nsIWinTaskbar);
|
|
if (!this._taskbar.available) {
|
|
// The Windows version is probably too old
|
|
DownloadTaskbarProgressUpdater = null;
|
|
return;
|
|
}
|
|
|
|
this._dm = Cc["@mozilla.org/download-manager;1"].
|
|
getService(Ci.nsIDownloadManager);
|
|
this._dm.addListener(this);
|
|
|
|
this._os = Cc["@mozilla.org/observer-service;1"].
|
|
getService(Ci.nsIObserverService);
|
|
this._os.addObserver(this, "quit-application-granted", false);
|
|
|
|
this._updateStatus();
|
|
// onBrowserWindowLoad/onDownloadWindowLoad are going to set the active
|
|
// window, so don't do it here.
|
|
},
|
|
|
|
/**
|
|
* Unregisters ourselves as a download progress listener.
|
|
*/
|
|
_uninit: function DTPU_uninit() {
|
|
this._dm.removeListener(this);
|
|
this._os.removeObserver(this, "quit-application-granted");
|
|
},
|
|
|
|
/**
|
|
* This holds a reference to the taskbar progress for the window we're
|
|
* working with. This window would preferably be download window, but can be
|
|
* another window if it isn't open.
|
|
*/
|
|
_activeTaskbarProgress: null,
|
|
|
|
/// Whether the active window is the download window
|
|
_activeWindowIsDownloadWindow: false,
|
|
|
|
/**
|
|
* Sets the active window, and whether it's the download window. This takes
|
|
* care of clearing out the previous active window's taskbar item, updating
|
|
* the taskbar, and setting an onunload listener.
|
|
*
|
|
* @param aWindow
|
|
* The window to set as active.
|
|
* @param aIsDownloadWindow
|
|
* Whether this window is a download window.
|
|
*/
|
|
_setActiveWindow: function DTPU_setActiveWindow(aWindow, aIsDownloadWindow)
|
|
{
|
|
// Clear out the taskbar for the old active window. (If there was no active
|
|
// window, this is a no-op.)
|
|
this._clearTaskbar();
|
|
|
|
this._activeWindowIsDownloadWindow = aIsDownloadWindow;
|
|
if (aWindow) {
|
|
// Get the taskbar progress for this window
|
|
let docShell = aWindow.QueryInterface(Ci.nsIInterfaceRequestor).
|
|
getInterface(Ci.nsIWebNavigation).
|
|
QueryInterface(Ci.nsIDocShellTreeItem).treeOwner.
|
|
QueryInterface(Ci.nsIInterfaceRequestor).
|
|
getInterface(Ci.nsIXULWindow).docShell;
|
|
let taskbarProgress = this._taskbar.getTaskbarProgress(docShell);
|
|
this._activeTaskbarProgress = taskbarProgress;
|
|
|
|
this._updateTaskbar();
|
|
// _onActiveWindowUnload is idempotent, so we don't need to check whether
|
|
// we've already set this before or not.
|
|
aWindow.addEventListener("unload", function () {
|
|
DownloadTaskbarProgressUpdater._onActiveWindowUnload(taskbarProgress);
|
|
}, false);
|
|
}
|
|
else {
|
|
this._activeTaskbarProgress = null;
|
|
}
|
|
},
|
|
|
|
/// Current state displayed on the active window's taskbar item
|
|
_taskbarState: Ci.nsITaskbarProgress.STATE_NO_PROGRESS,
|
|
_totalSize: 0,
|
|
_totalTransferred: 0,
|
|
|
|
/**
|
|
* Update the active window's taskbar indicator with the current state. There
|
|
* are two cases here:
|
|
* 1. If the active window is the download window, then we always update
|
|
* the taskbar indicator.
|
|
* 2. If the active window isn't the download window, then we update only if
|
|
* the status is Normal, i.e. one or more downloads are currently
|
|
* progressing. If we aren't, then we clear the indicator.
|
|
*/
|
|
_updateTaskbar: function DTPU_updateTaskbar()
|
|
{
|
|
if (!this._activeTaskbarProgress) {
|
|
return;
|
|
}
|
|
|
|
// If the active window is not the download manager window, set the state
|
|
// only if it is Normal
|
|
if (this._activeWindowIsDownloadWindow ||
|
|
(this._taskbarState == Ci.nsITaskbarProgress.STATE_NORMAL)) {
|
|
this._activeTaskbarProgress.setProgressState(this._taskbarState,
|
|
this._totalTransferred,
|
|
this._totalSize);
|
|
}
|
|
// Clear any state otherwise
|
|
else {
|
|
this._clearTaskbar();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Clear taskbar state. This is needed:
|
|
* - to transfer the indicator off a window before transferring it onto
|
|
* another one
|
|
* - whenever we don't want to show it for a non-download window.
|
|
*/
|
|
_clearTaskbar: function DTPU_clearTaskbar()
|
|
{
|
|
if (this._activeTaskbarProgress) {
|
|
this._activeTaskbarProgress.setProgressState(
|
|
Ci.nsITaskbarProgress.STATE_NO_PROGRESS
|
|
);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Update this._taskbarState, this._totalSize and this._totalTransferred.
|
|
* This is called when the download manager is initialized or when the
|
|
* progress or state of a download changes.
|
|
* We compute the number of active and paused downloads, and the total size
|
|
* and total amount already transferred across whichever downloads we have
|
|
* the data for.
|
|
* - If there are no active downloads, then we don't want to show any
|
|
* progress.
|
|
* - If the number of active downloads is equal to the number of paused
|
|
* downloads, then we show a paused indicator if we know the size of at
|
|
* least one download, and no indicator if we don't.
|
|
* - If the number of active downloads is more than the number of paused
|
|
* downloads, then we show a "normal" indicator if we know the size of at
|
|
* least one download, and an indeterminate indicator if we don't.
|
|
*/
|
|
_updateStatus: function DTPU_updateStatus()
|
|
{
|
|
let numActive = this._dm.activeDownloadCount;
|
|
let totalSize = 0, totalTransferred = 0;
|
|
|
|
if (numActive == 0) {
|
|
this._taskbarState = Ci.nsITaskbarProgress.STATE_NO_PROGRESS;
|
|
}
|
|
else {
|
|
let numPaused = 0;
|
|
|
|
// Enumerate all active downloads
|
|
let downloads = this._dm.activeDownloads;
|
|
while (downloads.hasMoreElements()) {
|
|
let download = downloads.getNext().QueryInterface(Ci.nsIDownload);
|
|
// Only set values if we actually know the download size
|
|
if (download.percentComplete < 100 && download.size > 0) {
|
|
totalSize += download.size;
|
|
totalTransferred += download.amountTransferred;
|
|
}
|
|
// We might need to display a paused state, so track this
|
|
if (download.state == this._dm.DOWNLOAD_PAUSED) {
|
|
numPaused++;
|
|
}
|
|
}
|
|
|
|
// If all downloads are paused, show the progress as paused, unless we
|
|
// don't have any information about sizes, in which case we don't
|
|
// display anything
|
|
if (numActive == numPaused) {
|
|
if (totalSize == 0) {
|
|
this._taskbarState = Ci.nsITaskbarProgress.STATE_NO_PROGRESS;
|
|
totalTransferred = 0;
|
|
}
|
|
else {
|
|
this._taskbarState = Ci.nsITaskbarProgress.STATE_PAUSED;
|
|
}
|
|
}
|
|
// If at least one download is not paused, and we don't have any
|
|
// information about download sizes, display an indeterminate indicator
|
|
else if (totalSize == 0) {
|
|
this._taskbarState = Ci.nsITaskbarProgress.STATE_INDETERMINATE;
|
|
totalTransferred = 0;
|
|
}
|
|
// Otherwise display a normal progress bar
|
|
else {
|
|
this._taskbarState = Ci.nsITaskbarProgress.STATE_NORMAL;
|
|
}
|
|
}
|
|
|
|
this._totalSize = totalSize;
|
|
this._totalTransferred = totalTransferred;
|
|
},
|
|
|
|
/**
|
|
* Called when a window that at one point has been an active window is
|
|
* closed. If this window is currently the active window, we need to look for
|
|
* another window and make that our active window.
|
|
*
|
|
* This function is idempotent, so multiple calls for the same window are not
|
|
* a problem.
|
|
*
|
|
* @param aTaskbarProgress
|
|
* The taskbar progress for the window that is being unloaded.
|
|
*/
|
|
_onActiveWindowUnload: function DTPU_onActiveWindowUnload(aTaskbarProgress)
|
|
{
|
|
if (this._activeTaskbarProgress == aTaskbarProgress) {
|
|
let windowMediator = Cc["@mozilla.org/appshell/window-mediator;1"].
|
|
getService(Ci.nsIWindowMediator);
|
|
let windows = windowMediator.getEnumerator(null);
|
|
let newActiveWindow = null;
|
|
if (windows.hasMoreElements()) {
|
|
newActiveWindow = windows.getNext().QueryInterface(Ci.nsIDOMWindow);
|
|
}
|
|
|
|
// We aren't ever going to reach this point while the download manager is
|
|
// open, so it's safe to assume false for the second operand
|
|
this._setActiveWindow(newActiveWindow, false);
|
|
}
|
|
},
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//// nsIDownloadProgressListener
|
|
|
|
/**
|
|
* Update status if a download's progress has changed.
|
|
*/
|
|
onProgressChange: function DTPU_onProgressChange()
|
|
{
|
|
this._updateStatus();
|
|
this._updateTaskbar();
|
|
},
|
|
|
|
/**
|
|
* Update status if a download's state has changed.
|
|
*/
|
|
onDownloadStateChange: function DTPU_onDownloadStateChange()
|
|
{
|
|
this._updateStatus();
|
|
this._updateTaskbar();
|
|
},
|
|
|
|
onSecurityChange: function() { },
|
|
|
|
onStateChange: function() { },
|
|
|
|
observe: function DTPU_observe(aSubject, aTopic, aData) {
|
|
if (aTopic == "quit-application-granted") {
|
|
this._uninit();
|
|
}
|
|
}
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//// Initialization
|
|
|
|
DownloadTaskbarProgressUpdater._init();
|