Mozilla/mozilla/mail/components/preferences/display.js

# -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*-
# ***** 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 the Thunderbird Preferences System.
#
# The Initial Developer of the Original Code is
# Scott MacGregor.
# Portions created by the Initial Developer are Copyright (C) 2005
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
#   Scott MacGregor <mscott@mozilla.org>
#
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# 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"),
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# the provisions above, a recipient may use your version of this file under
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var gDisplayPane = {
  mInitialized: false,

  init: function ()
  {
    var preference = document.getElementById("mail.preferences.display.selectedTabIndex");
    if (preference.value)
      document.getElementById("displayPrefs").selectedIndex = preference.value;

      // build the charset menu list. We do this by hand instead of using the xul template
      // builder because of Bug #285076, 
      this.createCharsetMenus(document.getElementById("viewDefaultCharset-menupopup"), "NC:DecodersRoot",
                              document.getElementById('mailnews.view_default_charset').value);

    this.mInitialized = true;
  },

  tabSelectionChanged: function ()
  {
    if (this.mInitialized)
      document.getElementById("mail.preferences.display.selectedTabIndex")
              .valueFromPreferences = document.getElementById("displayPrefs").selectedIndex;
  },

  restoreDefaultLabels: function()
  {
    for (var index = 1; index <= 5; index++)
    {
      // reset throws an exception if the pref value is already the default so
      // work around that with some try/catch exception handling
      try {
        document.getElementById('mailnews.labels.description.' + index ).reset();
      } catch (ex) {}

      try {
        document.getElementById('mailnews.labels.color.' + index ).reset();
      } catch (ex) {}
    }
  },

  fontOptionsDialog: function()
  {
    document.documentElement.openSubDialog("chrome://messenger/content/preferences/fonts.xul", "", null);  
  },

  addMenuItem: function(aMenuPopup, aLabel, aValue)
  { 
    var menuItem = document.createElement('menuitem');
    menuItem.setAttribute('label', aLabel);
    menuItem.setAttribute('value', aValue);
    aMenuPopup.appendChild(menuItem);
  },

  readRDFString: function(aDS,aRes,aProp) 
  {
    var n = aDS.GetTarget(aRes, aProp, true);
    return (n) ? n.QueryInterface(Components.interfaces.nsIRDFLiteral).Value : "";
  },

  createCharsetMenus: function(aMenuPopup, aRoot, aPreferenceValue)
  {
    var rdfService = Components.classes["@mozilla.org/rdf/rdf-service;1"]
                     .getService(Components.interfaces.nsIRDFService);
    var kNC_Root = rdfService.GetResource(aRoot);
    var kNC_Name = rdfService.GetResource("http://home.netscape.com/NC-rdf#Name");

    var rdfDataSource = rdfService.GetDataSource("rdf:charset-menu");
    var rdfContainer = Components.classes["@mozilla.org/rdf/container;1"].getService(Components.interfaces.nsIRDFContainer);
    rdfContainer.Init(rdfDataSource, kNC_Root);

    var charset;
    var availableCharsets = rdfContainer.GetElements();

    for (var i = 0; i < rdfContainer.GetCount(); i++) 
    {
      charset = availableCharsets.getNext().QueryInterface(Components.interfaces.nsIRDFResource);

      this.addMenuItem(aMenuPopup, this.readRDFString(rdfDataSource, charset, kNC_Name), charset.Value);
      if (charset.Value == aPreferenceValue)
        aMenuPopup.parentNode.value = charset.Value;
    }         
  },
  
  mCharsetMenuInitialized: false,
  readDefaultCharset: function()
  {
    if (!this.mCharsetMenuInitialized) 
    {
      Components.classes["@mozilla.org/observer-service;1"]
                .getService(Components.interfaces.nsIObserverService)
                .notifyObservers(null, "charsetmenu-selected", "mailedit");
      // build the charset menu list. We do this by hand instead of using the xul template
      // builder because of Bug #285076, 
      this.createCharsetMenus(document.getElementById("sendDefaultCharset-menupopup"), "NC:MaileditCharsetMenuRoot",
                              document.getElementById('mailnews.send_default_charset').value);
      this.mCharsetMenuInitialized = true;
    }
    return undefined;
  }
};