pjs/browser/components/preferences/languages.js

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JavaScript

# -*- Mode: Java; tab-width: 4; 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 Firefox Preferences System.
#
# The Initial Developer of the Original Code is
# Ben Goodger.
# Portions created by the Initial Developer are Copyright (C) 2005
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
# Ben Goodger <ben@mozilla.org>
# Adrian Havill <havill@redhat.com>
# Steffen Wilberg <steffen.wilberg@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 gLanguagesDialog = {
_availableLanguagesList : [],
_acceptLanguages : { },
_selectedItemID : null,
init: function ()
{
if (!this._availableLanguagesList.length)
this._loadAvailableLanguages();
},
get _activeLanguages()
{
return document.getElementById("activeLanguages");
},
get _availableLanguages()
{
return document.getElementById("availableLanguages");
},
_loadAvailableLanguages: function ()
{
// This is a parser for: resource://gre/res/language.properties
// The file is formatted like so:
// ab[-cd].accept=true|false
// ab = language
// cd = region
var bundleAccepted = document.getElementById("bundleAccepted");
var bundleRegions = document.getElementById("bundleRegions");
var bundleLanguages = document.getElementById("bundleLanguages");
var bundlePreferences = document.getElementById("bundlePreferences");
function LanguageInfo(aName, aABCD, aIsVisible)
{
this.name = aName;
this.abcd = aABCD;
this.isVisible = aIsVisible;
}
// 1) Read the available languages out of language.properties
var strings = bundleAccepted.strings;
while (strings.hasMoreElements()) {
var currString = strings.getNext();
if (!(currString instanceof Components.interfaces.nsIPropertyElement))
break;
var property = currString.key.split("."); // ab[-cd].accept
if (property[1] == "accept") {
var abCD = property[0];
var abCDPairs = abCD.split("-"); // ab[-cd]
var useABCDFormat = abCDPairs.length > 1;
var ab = useABCDFormat ? abCDPairs[0] : abCD;
var cd = useABCDFormat ? abCDPairs[1] : "";
if (ab) {
var language = "";
try {
language = bundleLanguages.getString(ab);
}
catch (e) { continue; };
var region = "";
if (useABCDFormat) {
try {
region = bundleRegions.getString(cd);
}
catch (e) { continue; }
}
var name = "";
if (useABCDFormat)
name = bundlePreferences.getFormattedString("languageRegionCodeFormat",
[language, region, abCD]);
else
name = bundlePreferences.getFormattedString("languageCodeFormat",
[language, abCD]);
if (name && abCD) {
var isVisible = currString.value == "true" &&
(!(abCD in this._acceptLanguages) || !this._acceptLanguages[abCD]);
var li = new LanguageInfo(name, abCD, isVisible);
this._availableLanguagesList.push(li);
}
}
}
}
this._buildAvailableLanguageList();
},
_buildAvailableLanguageList: function ()
{
var availableLanguagesPopup = document.getElementById("availableLanguagesPopup");
while (availableLanguagesPopup.hasChildNodes())
availableLanguagesPopup.removeChild(availableLanguagesPopup.firstChild);
// Sort the list of languages by name
this._availableLanguagesList.sort(function (a, b) {
return a.name.localeCompare(b.name);
});
// Load the UI with the data
for (var i = 0; i < this._availableLanguagesList.length; ++i) {
var abCD = this._availableLanguagesList[i].abcd;
if (this._availableLanguagesList[i].isVisible &&
(!(abCD in this._acceptLanguages) || !this._acceptLanguages[abCD])) {
var menuitem = document.createElement("menuitem");
menuitem.id = this._availableLanguagesList[i].abcd;
availableLanguagesPopup.appendChild(menuitem);
menuitem.setAttribute("label", this._availableLanguagesList[i].name);
}
}
},
readAcceptLanguages: function ()
{
while (this._activeLanguages.hasChildNodes())
this._activeLanguages.removeChild(this._activeLanguages.firstChild);
var selectedIndex = 0;
var preference = document.getElementById("intl.accept_languages");
if (preference.value == "")
return undefined;
var languages = preference.value.toLowerCase().split(/\s*,\s*/);
for (var i = 0; i < languages.length; ++i) {
var name = this._getLanguageName(languages[i]);
if (!name)
name = "[" + languages[i] + "]";
var listitem = document.createElement("listitem");
listitem.id = languages[i];
if (languages[i] == this._selectedItemID)
selectedIndex = i;
this._activeLanguages.appendChild(listitem);
listitem.setAttribute("label", name);
// Hash this language as an "Active" language so we don't
// show it in the list that can be added.
this._acceptLanguages[languages[i]] = true;
}
if (this._activeLanguages.childNodes.length > 0) {
this._activeLanguages.ensureIndexIsVisible(selectedIndex);
this._activeLanguages.selectedIndex = selectedIndex;
}
return undefined;
},
writeAcceptLanguages: function ()
{
return undefined;
},
onAvailableLanguageSelect: function ()
{
var addButton = document.getElementById("addButton");
addButton.disabled = false;
this._availableLanguages.removeAttribute("accesskey");
},
addLanguage: function ()
{
var selectedID = this._availableLanguages.selectedItem.id;
var preference = document.getElementById("intl.accept_languages");
var arrayOfPrefs = preference.value.toLowerCase().split(/\s*,\s*/);
for (var i = 0; i < arrayOfPrefs.length; ++i ){
if (arrayOfPrefs[i] == selectedID)
return;
}
this._selectedItemID = selectedID;
if (preference.value == "")
preference.value = selectedID;
else {
arrayOfPrefs.unshift(selectedID);
preference.value = arrayOfPrefs.join(",");
}
this._acceptLanguages[selectedID] = true;
this._availableLanguages.selectedItem = null;
// Rebuild the available list with the added item removed...
this._buildAvailableLanguageList();
this._availableLanguages.setAttribute("label", this._availableLanguages.getAttribute("label2"));
},
removeLanguage: function ()
{
// Build the new preference value string.
var languagesArray = [];
for (var i = 0; i < this._activeLanguages.childNodes.length; ++i) {
var item = this._activeLanguages.childNodes[i];
if (!item.selected)
languagesArray.push(item.id);
else
this._acceptLanguages[item.id] = false;
}
var string = languagesArray.join(",");
// Get the item to select after the remove operation completes.
var selection = this._activeLanguages.selectedItems;
var lastSelected = selection[selection.length-1];
var selectItem = lastSelected.nextSibling || lastSelected.previousSibling;
selectItem = selectItem ? selectItem.id : null;
this._selectedItemID = selectItem;
// Update the preference and force a UI rebuild
var preference = document.getElementById("intl.accept_languages");
preference.value = string;
this._buildAvailableLanguageList();
},
_getLanguageName: function (aABCD)
{
if (!this._availableLanguagesList.length)
this._loadAvailableLanguages();
for (var i = 0; i < this._availableLanguagesList.length; ++i) {
if (aABCD == this._availableLanguagesList[i].abcd)
return this._availableLanguagesList[i].name;
}
return "";
},
moveUp: function ()
{
var selectedItem = this._activeLanguages.selectedItems[0];
var previousItem = selectedItem.previousSibling;
var string = "";
for (var i = 0; i < this._activeLanguages.childNodes.length; ++i) {
var item = this._activeLanguages.childNodes[i];
string += (i == 0 ? "" : ",");
if (item.id == previousItem.id)
string += selectedItem.id;
else if (item.id == selectedItem.id)
string += previousItem.id;
else
string += item.id;
}
this._selectedItemID = selectedItem.id;
// Update the preference and force a UI rebuild
var preference = document.getElementById("intl.accept_languages");
preference.value = string;
},
moveDown: function ()
{
var selectedItem = this._activeLanguages.selectedItems[0];
var nextItem = selectedItem.nextSibling;
var string = "";
for (var i = 0; i < this._activeLanguages.childNodes.length; ++i) {
var item = this._activeLanguages.childNodes[i];
string += (i == 0 ? "" : ",");
if (item.id == nextItem.id)
string += selectedItem.id;
else if (item.id == selectedItem.id)
string += nextItem.id;
else
string += item.id;
}
this._selectedItemID = selectedItem.id;
// Update the preference and force a UI rebuild
var preference = document.getElementById("intl.accept_languages");
preference.value = string;
},
onLanguageSelect: function ()
{
var upButton = document.getElementById("up");
var downButton = document.getElementById("down");
var removeButton = document.getElementById("remove");
switch (this._activeLanguages.selectedCount) {
case 0:
upButton.disabled = downButton.disabled = removeButton.disabled = true;
break;
case 1:
upButton.disabled = this._activeLanguages.selectedIndex == 0;
downButton.disabled = this._activeLanguages.selectedIndex == this._activeLanguages.childNodes.length - 1;
removeButton.disabled = false;
break;
default:
upButton.disabled = true;
downButton.disabled = true;
removeButton.disabled = false;
}
}
};