root/trunk/chrome/content/dta/manager/prefs.js

/* ***** 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 DownThemAll!
 *
 * The Initial Developers of the Original Code are Stefano Verna and Federico Parodi
 * Portions created by the Initial Developers are Copyright (C) 2004-2007
 * the Initial Developers. All Rights Reserved.
 *
 * Contributor(s):
 *    Stefano Verna <stefano.verna@gmail.com>
 *    Federico Parodi <f.parodi@tiscali.it>
 *    Nils Maier <MaierMan@web.de>
 *
 * 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 ***** */
 
 var Prefs = {
  tempLocation: null,
  
  mappings: [
    ['removeCompleted', true],
    ['removeAborted', false],
    ['removeCanceled', false],
    ['autoClose', 'closedta', false],
    ['timeout', 300],
    ['maxInProgress', 'ntask', 4],
    ['maxChunks', 4],
    ['setTime', true],
    ['showOnlyFilenames', true],
    ['conflictResolution', 3],
    ['alertingSystem', 'alertbox', (SYSTEMSLASH == '\\') ? 1 : 0],
    ['finishEvent', ''],
    ['showTooltip', true],
    ['maxAutoRetries', 10],
    ['autoRetryInterval', 0],
    ['autoClearComplete', false],
    ['confirmRemove', true],
    ['permissions', 384],
  ],

  // nsIObserver
  observe: function(subject, topic, prefName) {
    this._refreshPrefs(prefName);
  },

  init: function() {
    makeObserver(this);

    try {
      this._resetConnPrefs();
      this._refreshPrefs();
      Preferences.addObserver('extensions.dta.', this);
      Preferences.addObserver('network.', this);
    }
    catch (ex) {
      Debug.log("failed to add pref-observer", ex);
    }
  },

  _refreshPrefs: function(prefName) {
    Debug.logString("pref reload");
    this.mappings.forEach(
      function(e) {
        let key, pref, def;
        if (!e) {
          return;
        }
        else if (e.length == 3) {
          key = e[0];
          pref = e[1];
          def = e[2];
        }
        else {
          key = e[0];
          pref = key.toLowerCase();
          def = e[1];
        }
        this[key] = Preferences.getDTA(pref, def);
      },
      this
    );
    
    var perms = Prefs.permissions;
    if (perms & 0600) {
      perms |= 0100;
    }
    if (perms & 0060) {
      perms |= 0010;
    }       
    if (perms & 0006) {
      perms |= 0001;
    }
    this.dirPermissions = perms;    

    if (Preferences.getDTA("saveTemp", true)) {
      try {
        this.tempLocation = Preferences.getMultiByteDTA("tempLocation", '');
        if (this.tempLocation == '') {
          // #44: generate a default tmp dir on per-profile basis
          // hash the profD, as it would be otherwise a minor information leak
          var dsp = Serv('@mozilla.org/file/directory_service;1', 'nsIProperties');
          this.tempLocation = dsp.get("TmpD", Ci.nsIFile);
          var profD = hash(dsp.get("ProfD", Ci.nsIFile).leafName);
          this.tempLocation.append("dtatmp-" + profD);
          Debug.log(this.tempLocation.path);
        }
        else {
          this.tempLocation = new FileFactory(this.tempLocation);
        }
      } catch (ex) {
        this.tempLocation = null;
        // XXX: error handling
      }
    }
    else {
      this.tempLocation = null;
    }
    var conns = (this.maxInProgress * this.maxChunks) + 2;
    ['network.http.max-connections', 'network.http.max-connections-per-server'].forEach(
      function(e) {
        if ((!prefName || prefName == e) && conns != Preferences.get(e, conns)) {
          Preferences.setDTA(e, Preferences.get(e, conns));
        }       
        if (conns > Preferences.get(e, conns)) {
          Preferences.set(e, conns);
        }
        conns = Math.floor(conns / 1.5);
      }
    );
  },
  shutdown: function() {
    Preferences.removeObserver('network.', this);
    this._resetConnPrefs();
  },
  _resetConnPrefs: function() {
    ['network.http.max-connections', 'network.http.max-connections-per-server'].forEach(
      function(e) {
        let conn = Preferences.getDTA(e, 0);
        if (conn) {
          Preferences.set(e, conn);
          Preferences.setDTA(e, 0);
        }
      }
    );
  }
}
Prefs.init();