michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: //get prefInt services
michael@0: 
michael@0: var availCharsetDict     = [];
michael@0: var prefBranch           = null; //Preferences Interface
michael@0: var pref_string_title    = "";
michael@0: var pref_string_content  = "";
michael@0: var pref_string_object   = null;
michael@0: 
michael@0: function Init()
michael@0: {
michael@0:   var applicationArea = "";
michael@0: 
michael@0:   if ("arguments" in window && window.arguments[0])
michael@0:     applicationArea = window.arguments[0];
michael@0: 
michael@0:   prefBranch = Components.classes["@mozilla.org/preferences-service;1"];
michael@0: 
michael@0:   if (prefBranch) {
michael@0:     prefBranch = prefBranch.getService(Components.interfaces.nsIPrefBranch);
michael@0: 
michael@0:     if (applicationArea.indexOf("mail") != -1) {
michael@0:       pref_string_title = "intl.charsetmenu.mailedit";
michael@0:     } else {
michael@0:     //default is the browser
michael@0:       pref_string_title = "intl.charsetmenu.browser.static";
michael@0:     }
michael@0: 
michael@0:     pref_string_object = prefBranch.getComplexValue(pref_string_title, Components.interfaces.nsIPrefLocalizedString)
michael@0:     pref_string_content = pref_string_object.data;
michael@0: 
michael@0:     AddRemoveLatin1('add');
michael@0:   }
michael@0: 
michael@0:   LoadAvailableCharSets();
michael@0:   LoadActiveCharSets();
michael@0: }
michael@0: 
michael@0: 
michael@0: function readRDFString(aDS,aRes,aProp) 
michael@0: {
michael@0:   var n = aDS.GetTarget(aRes, aProp, true);
michael@0:   if (n)
michael@0:     return n.QueryInterface(Components.interfaces.nsIRDFLiteral).Value;
michael@0:   else 
michael@0:     return "";
michael@0: }
michael@0: 
michael@0: 
michael@0: function LoadAvailableCharSets()
michael@0: {
michael@0:   try {
michael@0:     var available_charsets_listbox = document.getElementById('available_charsets');
michael@0:     var rdf=Components.classes["@mozilla.org/rdf/rdf-service;1"].getService(Components.interfaces.nsIRDFService); 
michael@0:     var kNC_Root = rdf.GetResource("NC:DecodersRoot");
michael@0:     var kNC_name = rdf.GetResource("http://home.netscape.com/NC-rdf#Name");
michael@0:     var rdfDataSource = rdf.GetDataSource("rdf:charset-menu"); 
michael@0:     var rdfContainer =
michael@0:       Components.classes["@mozilla.org/rdf/container;1"]
michael@0:                 .createInstance(Components.interfaces.nsIRDFContainer);
michael@0: 
michael@0:     rdfContainer.Init(rdfDataSource, kNC_Root);
michael@0:     var availableCharsets = rdfContainer.GetElements();
michael@0:     var charset;
michael@0: 
michael@0:     for (var i = 0; i < rdfContainer.GetCount(); i++) {
michael@0:       charset = availableCharsets.getNext().QueryInterface(Components.interfaces.nsIRDFResource);
michael@0:       availCharsetDict[i] = new Array(2);
michael@0:       availCharsetDict[i][0] = readRDFString(rdfDataSource, charset, kNC_name);
michael@0:       availCharsetDict[i][1] = charset.Value;
michael@0: 
michael@0:       AddListItem(document,
michael@0:                   available_charsets_listbox,
michael@0:                   availCharsetDict[i][1],
michael@0:                   availCharsetDict[i][0]);
michael@0:     }
michael@0:   }
michael@0:   catch (e) {}
michael@0: }
michael@0: 
michael@0: 
michael@0: function GetCharSetTitle(id)
michael@0: {
michael@0:   if (availCharsetDict) {
michael@0:     for (var j = 0; j < availCharsetDict.length; j++) {
michael@0:       if (availCharsetDict[j][1] == id) {
michael@0:         return availCharsetDict[j][0];
michael@0:       }
michael@0:     }
michael@0:   }
michael@0:   return '';
michael@0: }
michael@0: 
michael@0: function AddRemoveLatin1(action)
michael@0: {
michael@0:   var arrayOfPrefs = [];
michael@0:   arrayOfPrefs = pref_string_content.split(', ');
michael@0: 
michael@0:   if (arrayOfPrefs.length > 0) {
michael@0:     for (var i = 0; i < arrayOfPrefs.length; i++) {
michael@0:       if (arrayOfPrefs[i] == 'ISO-8859-1') {
michael@0:         if (action == 'remove') {
michael@0:           arrayOfPrefs[i] = arrayOfPrefs[arrayOfPrefs.length-1];
michael@0:           arrayOfPrefs.length = arrayOfPrefs.length - 1;
michael@0:         }
michael@0: 
michael@0:         pref_string_content = arrayOfPrefs.join(', ');
michael@0:         return;
michael@0:       }
michael@0:     }
michael@0: 
michael@0:     if (action == 'add') {
michael@0:       arrayOfPrefs[arrayOfPrefs.length] = 'ISO-8859-1';
michael@0:       pref_string_content = arrayOfPrefs.join(', ');
michael@0:     }
michael@0:   }
michael@0: }
michael@0: 
michael@0: 
michael@0: function LoadActiveCharSets()
michael@0: {
michael@0:   var active_charsets = document.getElementById('active_charsets');
michael@0:   var arrayOfPrefs = [];
michael@0:   var str;
michael@0:   var tit;
michael@0: 
michael@0:   arrayOfPrefs = pref_string_content.split(', ');
michael@0: 
michael@0:   if (arrayOfPrefs.length > 0) {
michael@0:     for (var i = 0; i < arrayOfPrefs.length; i++) {
michael@0:       str = arrayOfPrefs[i];
michael@0:       tit = GetCharSetTitle(str);
michael@0:       if (str && tit)
michael@0:         AddListItem(document, active_charsets, str, tit);
michael@0:     }
michael@0:   }
michael@0: }
michael@0: 
michael@0: function enable_save()
michael@0: {
michael@0:   var save_button = document.documentElement.getButton("accept");
michael@0:   save_button.removeAttribute('disabled');
michael@0: }
michael@0: 
michael@0: 
michael@0: function update_buttons()
michael@0: {
michael@0:   var available_charsets = document.getElementById('available_charsets');
michael@0:   var active_charsets = document.getElementById('active_charsets');
michael@0:   var remove_button = document.getElementById('remove_button');
michael@0:   var add_button = document.getElementById('add_button');
michael@0:   var up_button = document.getElementById('up_button');
michael@0:   var down_button = document.getElementById('down_button');
michael@0: 
michael@0:   var activeCharsetSelected = (active_charsets.selectedItems.length > 0);
michael@0:   remove_button.disabled = !activeCharsetSelected;
michael@0: 
michael@0:   if (activeCharsetSelected) {
michael@0:     up_button.disabled = !(active_charsets.selectedItems[0].previousSibling);
michael@0:     down_button.disabled = !(active_charsets.selectedItems[0].nextSibling);
michael@0:   }
michael@0:   else {
michael@0:     up_button.disabled = true;
michael@0:     down_button.disabled = true;
michael@0:   }
michael@0: 
michael@0:   add_button.disabled = (available_charsets.selectedItems.length == 0);
michael@0: }
michael@0: 
michael@0: 
michael@0: 
michael@0: function AddAvailableCharset()
michael@0: {
michael@0:   var active_charsets = document.getElementById('active_charsets');
michael@0:   var available_charsets = document.getElementById('available_charsets');
michael@0: 
michael@0:   for (var nodeIndex=0; nodeIndex < available_charsets.selectedItems.length;  nodeIndex++)
michael@0:   {
michael@0:     var selItem =  available_charsets.selectedItems[nodeIndex];
michael@0:     
michael@0:     var charsetname  = selItem.label;
michael@0:     var charsetid = selItem.id;
michael@0:     var already_active = false;
michael@0: 
michael@0:     for (var item = active_charsets.firstChild; item != null; item = item.nextSibling) {
michael@0:       if (charsetid == item.id) {
michael@0:         already_active = true;
michael@0:         break;
michael@0:       }//if
michael@0: 
michael@0:     }//for
michael@0: 
michael@0:     if (already_active == false) {
michael@0:       AddListItem(document, active_charsets, charsetid, charsetname);
michael@0:     }//if
michael@0: 
michael@0:   }//for
michael@0: 
michael@0:   available_charsets.clearSelection();
michael@0:   enable_save();
michael@0: 
michael@0: } //AddAvailableCharset
michael@0: 
michael@0: 
michael@0: 
michael@0: function RemoveActiveCharset()
michael@0: {
michael@0:   var listbox = document.getElementById('active_charsets');
michael@0:   var numSelectedItems = listbox.selectedItems.length;
michael@0: 
michael@0:   for (var count = 0; count < numSelectedItems; count ++) {
michael@0:     listbox.removeChild(listbox.selectedItems[0]);
michael@0:   }
michael@0: 
michael@0:   listbox.clearSelection();
michael@0: 
michael@0:   enable_save();
michael@0: } //RemoveActiveCharset
michael@0: 
michael@0: 
michael@0: 
michael@0: function Save()
michael@0: {
michael@0:   // Iterate through the 'active charsets  tree to collect the charsets
michael@0:   // that the user has chosen.
michael@0: 
michael@0:   var active_charsets = document.getElementById('active_charsets');
michael@0: 
michael@0:   var charsetid    = "";
michael@0:   var num_charsets = 0;
michael@0:   var pref_string_content = '';
michael@0: 
michael@0:   for (var item = active_charsets.firstChild; item != null; item = item.nextSibling) {
michael@0:     charsetid = item.id;
michael@0: 
michael@0:     if (charsetid.length > 1) {
michael@0:       num_charsets++;
michael@0: 
michael@0:       //separate >1 charsets by commas
michael@0:       if (num_charsets > 1)
michael@0:         pref_string_content = pref_string_content + ", " + charsetid;
michael@0:       else
michael@0:         pref_string_content = charsetid;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   try
michael@0:   {
michael@0:     if (prefBranch) {
michael@0:       pref_string_object.data = pref_string_content;
michael@0:       prefBranch.setComplexValue(pref_string_title, Components.interfaces.nsIPrefLocalizedString, pref_string_object);
michael@0:       window.close();
michael@0:     }
michael@0:   }
michael@0:   catch(ex) {
michael@0:     confirm('exception' + ex);
michael@0:   }
michael@0:   return true;
michael@0: } //Save
michael@0: 
michael@0: 
michael@0: function MoveUp() {
michael@0:   var listbox = document.getElementById('active_charsets');
michael@0:   if (listbox.selectedItems.length == 1) {
michael@0:     var selected = listbox.selectedItems[0];
michael@0:     var before = selected.previousSibling
michael@0:     if (before) {
michael@0:       listbox.insertBefore(selected, before);
michael@0:       listbox.selectItem(selected);
michael@0:       listbox.ensureElementIsVisible(selected);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   enable_save();
michael@0: } //MoveUp
michael@0: 
michael@0: 
michael@0: 
michael@0: function MoveDown() {
michael@0:   var listbox = document.getElementById('active_charsets');
michael@0:   if (listbox.selectedItems.length == 1) {
michael@0:     var selected = listbox.selectedItems[0];
michael@0:     if (selected.nextSibling) {
michael@0:       if (selected.nextSibling.nextSibling)
michael@0:         listbox.insertBefore(selected, selected.nextSibling.nextSibling);
michael@0:       else
michael@0:         selected.parentNode.appendChild(selected);
michael@0:       listbox.selectItem(selected);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   enable_save();
michael@0: } //MoveDown
michael@0: 
michael@0: function AddListItem(doc, listbox, ID, UIstring)
michael@0: {
michael@0:   // Create a treerow for the new item
michael@0:   var item = doc.createElement('listitem');
michael@0: 
michael@0:   // Copy over the attributes
michael@0:   item.setAttribute('label', UIstring);
michael@0:   item.setAttribute('id', ID);
michael@0: 
michael@0:   listbox.appendChild(item);
michael@0: }