gecko/toolkit/content/customizeCharset.js

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JavaScript
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2012-05-21 04:12:37 -07:00
/* 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);
}