The Tor Browser / file revision

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 //get prefInt services

 var availCharsetDict     = [];

 var prefBranch           = null; //Preferences Interface

 var pref_string_title    = "";

 var pref_string_content  = "";

 var pref_string_object   = null;

 function Init()

 {

   var applicationArea = "";

   if ("arguments" in window && window.arguments[0])

     applicationArea = window.arguments[0];

   prefBranch = Components.classes["@mozilla.org/preferences-service;1"];

   if (prefBranch) {

     prefBranch = prefBranch.getService(Components.interfaces.nsIPrefBranch);

     if (applicationArea.indexOf("mail") != -1) {

       pref_string_title = "intl.charsetmenu.mailedit";

     } else {

     //default is the browser

       pref_string_title = "intl.charsetmenu.browser.static";

     }

     pref_string_object = prefBranch.getComplexValue(pref_string_title, Components.interfaces.nsIPrefLocalizedString)

     pref_string_content = pref_string_object.data;

     AddRemoveLatin1('add');

   }

   LoadAvailableCharSets();

   LoadActiveCharSets();

 }

 function readRDFString(aDS,aRes,aProp) 

 {

   var n = aDS.GetTarget(aRes, aProp, true);

   if (n)

     return n.QueryInterface(Components.interfaces.nsIRDFLiteral).Value;

   else 

     return "";

 }

 function LoadAvailableCharSets()

 {

   try {

     var available_charsets_listbox = document.getElementById('available_charsets');

     var rdf=Components.classes["@mozilla.org/rdf/rdf-service;1"].getService(Components.interfaces.nsIRDFService); 

     var kNC_Root = rdf.GetResource("NC:DecodersRoot");

     var kNC_name = rdf.GetResource("http://home.netscape.com/NC-rdf#Name");

     var rdfDataSource = rdf.GetDataSource("rdf:charset-menu"); 

     var rdfContainer =

       Components.classes["@mozilla.org/rdf/container;1"]

                 .createInstance(Components.interfaces.nsIRDFContainer);

     rdfContainer.Init(rdfDataSource, kNC_Root);

     var availableCharsets = rdfContainer.GetElements();

     var charset;

     for (var i = 0; i < rdfContainer.GetCount(); i++) {

       charset = availableCharsets.getNext().QueryInterface(Components.interfaces.nsIRDFResource);

       availCharsetDict[i] = new Array(2);

       availCharsetDict[i][0] = readRDFString(rdfDataSource, charset, kNC_name);

       availCharsetDict[i][1] = charset.Value;

       AddListItem(document,

                   available_charsets_listbox,

                   availCharsetDict[i][1],

                   availCharsetDict[i][0]);

     }

   }

   catch (e) {}

 }

 function GetCharSetTitle(id)

 {

   if (availCharsetDict) {

     for (var j = 0; j < availCharsetDict.length; j++) {

       if (availCharsetDict[j][1] == id) {

         return availCharsetDict[j][0];

       }

     }

   }

   return '';

 }

 function AddRemoveLatin1(action)

 {

   var arrayOfPrefs = [];

   arrayOfPrefs = pref_string_content.split(', ');

   if (arrayOfPrefs.length > 0) {

     for (var i = 0; i < arrayOfPrefs.length; i++) {

       if (arrayOfPrefs[i] == 'ISO-8859-1') {

         if (action == 'remove') {

           arrayOfPrefs[i] = arrayOfPrefs[arrayOfPrefs.length-1];

           arrayOfPrefs.length = arrayOfPrefs.length - 1;

         }

         pref_string_content = arrayOfPrefs.join(', ');

         return;

       }

     }

     if (action == 'add') {

       arrayOfPrefs[arrayOfPrefs.length] = 'ISO-8859-1';

       pref_string_content = arrayOfPrefs.join(', ');

     }

   }

 }

 function LoadActiveCharSets()

 {

   var active_charsets = document.getElementById('active_charsets');

   var arrayOfPrefs = [];

   var str;

   var tit;

   arrayOfPrefs = pref_string_content.split(', ');

   if (arrayOfPrefs.length > 0) {

     for (var i = 0; i < arrayOfPrefs.length; i++) {

       str = arrayOfPrefs[i];

       tit = GetCharSetTitle(str);

       if (str && tit)

         AddListItem(document, active_charsets, str, tit);

     }

   }

 }

 function enable_save()

 {

   var save_button = document.documentElement.getButton("accept");

   save_button.removeAttribute('disabled');

 }

 function update_buttons()

 {

   var available_charsets = document.getElementById('available_charsets');

   var active_charsets = document.getElementById('active_charsets');

   var remove_button = document.getElementById('remove_button');

   var add_button = document.getElementById('add_button');

   var up_button = document.getElementById('up_button');

   var down_button = document.getElementById('down_button');

   var activeCharsetSelected = (active_charsets.selectedItems.length > 0);

   remove_button.disabled = !activeCharsetSelected;

   if (activeCharsetSelected) {

     up_button.disabled = !(active_charsets.selectedItems[0].previousSibling);

     down_button.disabled = !(active_charsets.selectedItems[0].nextSibling);

   }

   else {

     up_button.disabled = true;

     down_button.disabled = true;

   }

   add_button.disabled = (available_charsets.selectedItems.length == 0);

 }

 function AddAvailableCharset()

 {

   var active_charsets = document.getElementById('active_charsets');

   var available_charsets = document.getElementById('available_charsets');

   for (var nodeIndex=0; nodeIndex < available_charsets.selectedItems.length;  nodeIndex++)

   {

     var selItem =  available_charsets.selectedItems[nodeIndex];

     var charsetname  = selItem.label;

     var charsetid = selItem.id;

     var already_active = false;

     for (var item = active_charsets.firstChild; item != null; item = item.nextSibling) {

       if (charsetid == item.id) {

         already_active = true;

         break;

       }//if

     }//for

     if (already_active == false) {

       AddListItem(document, active_charsets, charsetid, charsetname);

     }//if

   }//for

   available_charsets.clearSelection();

   enable_save();

 } //AddAvailableCharset

 function RemoveActiveCharset()

 {

   var listbox = document.getElementById('active_charsets');

   var numSelectedItems = listbox.selectedItems.length;

   for (var count = 0; count < numSelectedItems; count ++) {

     listbox.removeChild(listbox.selectedItems[0]);

   }

   listbox.clearSelection();

   enable_save();

 } //RemoveActiveCharset

 function Save()

 {

   // Iterate through the 'active charsets  tree to collect the charsets

   // that the user has chosen.

   var active_charsets = document.getElementById('active_charsets');

   var charsetid    = "";

   var num_charsets = 0;

   var pref_string_content = '';

   for (var item = active_charsets.firstChild; item != null; item = item.nextSibling) {

     charsetid = item.id;

     if (charsetid.length > 1) {

       num_charsets++;

       //separate >1 charsets by commas

       if (num_charsets > 1)

         pref_string_content = pref_string_content + ", " + charsetid;

       else

         pref_string_content = charsetid;

     }

   }

   try

   {

     if (prefBranch) {

       pref_string_object.data = pref_string_content;

       prefBranch.setComplexValue(pref_string_title, Components.interfaces.nsIPrefLocalizedString, pref_string_object);

       window.close();

     }

   }

   catch(ex) {

     confirm('exception' + ex);

   }

   return true;

 } //Save

 function MoveUp() {

   var listbox = document.getElementById('active_charsets');

   if (listbox.selectedItems.length == 1) {

     var selected = listbox.selectedItems[0];

     var before = selected.previousSibling

     if (before) {

       listbox.insertBefore(selected, before);

       listbox.selectItem(selected);

       listbox.ensureElementIsVisible(selected);

     }

   }

   enable_save();

 } //MoveUp

 function MoveDown() {

   var listbox = document.getElementById('active_charsets');

   if (listbox.selectedItems.length == 1) {

     var selected = listbox.selectedItems[0];

     if (selected.nextSibling) {

       if (selected.nextSibling.nextSibling)

         listbox.insertBefore(selected, selected.nextSibling.nextSibling);

       else

         selected.parentNode.appendChild(selected);

       listbox.selectItem(selected);

     }

   }

   enable_save();

 } //MoveDown

 function AddListItem(doc, listbox, ID, UIstring)

 {

   // Create a treerow for the new item

   var item = doc.createElement('listitem');

   // Copy over the attributes

   item.setAttribute('label', UIstring);

   item.setAttribute('id', ID);

   listbox.appendChild(item);

 }