зеркало из https://github.com/mozilla/pjs.git
167 строки
6.3 KiB
JavaScript
167 строки
6.3 KiB
JavaScript
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Download Manager Utility Code.
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*
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* The Initial Developer of the Original Code is
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* Ehsan Akhgari <ehsan.akhgari@gmail.com>.
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* Portions created by the Initial Developer are Copyright (C) 2008
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Geoff Lankow <geoff@darktrojan.net>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* The behavior implemented by gDownloadLastDir is documented here.
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*
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* In normal browsing sessions, gDownloadLastDir uses the browser.download.lastDir
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* preference to store the last used download directory. The first time the user
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* switches into the private browsing mode, the last download directory is
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* preserved to the pref value, but if the user switches to another directory
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* during the private browsing mode, that directory is not stored in the pref,
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* and will be merely kept in memory. When leaving the private browsing mode,
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* this in-memory value will be discarded, and the last download directory
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* will be reverted to the pref value.
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*
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* Both the pref and the in-memory value will be cleared when clearing the
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* browsing history. This effectively changes the last download directory
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* to the default download directory on each platform.
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*/
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const LAST_DIR_PREF = "browser.download.lastDir";
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const PBSVC_CID = "@mozilla.org/privatebrowsing;1";
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const nsILocalFile = Components.interfaces.nsILocalFile;
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var EXPORTED_SYMBOLS = [ "gDownloadLastDir" ];
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Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
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Components.utils.import("resource://gre/modules/Services.jsm");
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Components.utils.import("resource://gre/modules/Dict.jsm");
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let pbSvc = null;
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if (PBSVC_CID in Components.classes) {
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pbSvc = Components.classes[PBSVC_CID]
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.getService(Components.interfaces.nsIPrivateBrowsingService);
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}
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let observer = {
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QueryInterface: function (aIID) {
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if (aIID.equals(Components.interfaces.nsIObserver) ||
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aIID.equals(Components.interfaces.nsISupports) ||
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aIID.equals(Components.interfaces.nsISupportsWeakReference))
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return this;
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throw Components.results.NS_NOINTERFACE;
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},
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observe: function (aSubject, aTopic, aData) {
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switch (aTopic) {
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case "private-browsing":
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if (aData == "enter")
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gDownloadLastDirFile = readLastDirPref();
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else if (aData == "exit") {
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gDownloadLastDirFile = null;
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gDownloadLastDirStore = new Dict();
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}
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break;
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case "browser:purge-session-history":
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gDownloadLastDirFile = null;
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if (Services.prefs.prefHasUserValue(LAST_DIR_PREF))
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Services.prefs.clearUserPref(LAST_DIR_PREF);
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gDownloadLastDirStore = new Dict();
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Services.contentPrefs.removePrefsByName(LAST_DIR_PREF);
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break;
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}
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}
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};
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let os = Components.classes["@mozilla.org/observer-service;1"]
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.getService(Components.interfaces.nsIObserverService);
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os.addObserver(observer, "private-browsing", true);
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os.addObserver(observer, "browser:purge-session-history", true);
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function readLastDirPref() {
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try {
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return Services.prefs.getComplexValue(LAST_DIR_PREF, nsILocalFile);
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}
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catch (e) {
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return null;
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}
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}
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let gDownloadLastDirFile = readLastDirPref();
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let gDownloadLastDirStore = new Dict();
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let gDownloadLastDir = {
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// compat shims
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get file() { return this.getFile(); },
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set file(val) { this.setFile(null, val); },
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getFile: function (aURI) {
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if (aURI) {
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let lastDir;
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if (pbSvc && pbSvc.privateBrowsingEnabled) {
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let group = Services.contentPrefs.grouper.group(aURI);
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lastDir = gDownloadLastDirStore.get(group, null);
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}
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if (!lastDir) {
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lastDir = Services.contentPrefs.getPref(aURI, LAST_DIR_PREF);
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}
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if (lastDir) {
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var lastDirFile = Components.classes["@mozilla.org/file/local;1"]
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.createInstance(Components.interfaces.nsILocalFile);
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lastDirFile.initWithPath(lastDir);
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return lastDirFile;
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}
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}
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if (gDownloadLastDirFile && !gDownloadLastDirFile.exists())
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gDownloadLastDirFile = null;
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if (pbSvc && pbSvc.privateBrowsingEnabled)
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return gDownloadLastDirFile;
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else
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return readLastDirPref();
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},
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setFile: function (aURI, aFile) {
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if (aURI) {
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if (pbSvc && pbSvc.privateBrowsingEnabled) {
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let group = Services.contentPrefs.grouper.group(aURI);
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gDownloadLastDirStore.set(group, aFile.path);
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} else {
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Services.contentPrefs.setPref(aURI, LAST_DIR_PREF, aFile.path);
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}
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}
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if (pbSvc && pbSvc.privateBrowsingEnabled) {
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if (aFile instanceof Components.interfaces.nsIFile)
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gDownloadLastDirFile = aFile.clone();
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else
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gDownloadLastDirFile = null;
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} else {
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if (aFile instanceof Components.interfaces.nsIFile)
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Services.prefs.setComplexValue(LAST_DIR_PREF, nsILocalFile, aFile);
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else if (Services.prefs.prefHasUserValue(LAST_DIR_PREF))
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Services.prefs.clearUserPref(LAST_DIR_PREF);
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}
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}
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};
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