The Tor Browser: browser/components/preferences/languages.js@8bccb770b82d (annotated)

browser/components/preferences/languages.js@8bccb770b82d (annotated)

browser/components/preferences/languages.js

Wed, 31 Dec 2014 13:27:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 13:27:57 +0100
branch: TOR_BUG_3246
changeset 6: 8bccb770b82d
permissions: -rw-r--r--

Ignore runtime configuration files generated during quality assurance.

 /* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /* 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/. */
 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;
     }
   }
 };