mirror of
https://github.com/rn10950/RetroZilla.git
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124 lines
4.2 KiB
JavaScript
124 lines
4.2 KiB
JavaScript
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2001
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Joe Hewitt <hewitt@netscape.com> (original author)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/***************************************************************
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* PrefUtils -------------------------------------------------
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* Utility for easily using the Mozilla preferences system.
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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* REQUIRED IMPORTS:
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****************************************************************/
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//////////// global variables /////////////////////
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//////////// global constants ////////////////////
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const nsIPrefBranch = Components.interfaces.nsIPrefBranch;
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////////////////////////////////////////////////////////////////////////////
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//// class PrefUtils
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var PrefUtils =
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{
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mPrefs: null,
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init: function()
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{
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var prefService = XPCU.getService("@mozilla.org/preferences-service;1", "nsIPrefService");
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this.mPrefs = prefService.getBranch(null);
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},
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addObserver: function(aDomain, aFunction)
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{
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if (!this.mPrefs) this.init();
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var pbi = XPCU.QI(this.mPrefs, "nsIPrefBranchInternal");
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if (pbi)
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pbi.addObserver(aDomain, aFunction, false);
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},
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removeObserver: function(aDomain, aFunction)
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{
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if (!this.mPrefs) this.init();
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var pbi = XPCU.QI(this.mPrefs, "nsIPrefBranchInternal");
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if (pbi)
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pbi.removeObserver(aDomain, aFunction);
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},
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setPref: function(aName, aValue)
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{
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if (!this.mPrefs) this.init();
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var type = this.mPrefs.getPrefType(aName);
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try {
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if (type == nsIPrefBranch.PREF_STRING) {
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var str = Components.classes["@mozilla.org/supports-string;1"]
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.createInstance(Components.interfaces.nsISupportsString);
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str.data = aValue;
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this.mPrefs.setComplexValue(aName, Components.interfaces.nsISupportsString, str);
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} else if (type == nsIPrefBranch.PREF_BOOL) {
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this.mPrefs.setBoolPref(aName, aValue);
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} else if (type == nsIPrefBranch.PREF_INT) {
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this.mPrefs.setIntPref(aName, aValue);
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}
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} catch(ex) {
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debug("ERROR: Unable to write pref \"" + aName + "\".\n");
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}
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},
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getPref: function(aName)
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{
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if (!this.mPrefs) this.init();
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var type = this.mPrefs.getPrefType(aName);
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try {
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if (type == nsIPrefBranch.PREF_STRING) {
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return this.mPrefs.getComplexValue(aName, Components.interfaces.nsISupportsString).data;
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} else if (type == nsIPrefBranch.PREF_BOOL) {
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return this.mPrefs.getBoolPref(aName);
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} else if (type == nsIPrefBranch.PREF_INT) {
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return this.mPrefs.getIntPref(aName);
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}
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} catch(ex) {
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debug("ERROR: Unable to read pref \"" + aName + "\".\n");
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}
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return null;
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}
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};
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