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: 
michael@0: /**
michael@0:  * nsPreferences - a wrapper around nsIPrefService. Provides built in
michael@0:  *                 exception handling to make preferences access simpler.
michael@0:  **/
michael@0: var nsPreferences = {
michael@0:   get mPrefService()
michael@0:     {
michael@0:       return Components.classes["@mozilla.org/preferences-service;1"]
michael@0:                        .getService(Components.interfaces.nsIPrefBranch);
michael@0:     },
michael@0: 
michael@0:   setBoolPref: function (aPrefName, aPrefValue)
michael@0:     {
michael@0:       try 
michael@0:         {
michael@0:           this.mPrefService.setBoolPref(aPrefName, aPrefValue);
michael@0:         }
michael@0:       catch(e)
michael@0:         {
michael@0:         }
michael@0:     },
michael@0:   
michael@0:   getBoolPref: function (aPrefName, aDefVal)
michael@0:     {
michael@0:       try
michael@0:         {
michael@0:           return this.mPrefService.getBoolPref(aPrefName);
michael@0:         }
michael@0:       catch(e)
michael@0:         {
michael@0:           return aDefVal != undefined ? aDefVal : null;
michael@0:         }
michael@0:       return null;        // quiet warnings
michael@0:     },
michael@0:   
michael@0:   setUnicharPref: function (aPrefName, aPrefValue)
michael@0:     {
michael@0:       try
michael@0:         {
michael@0:           var str = Components.classes["@mozilla.org/supports-string;1"]
michael@0:                               .createInstance(Components.interfaces.nsISupportsString);
michael@0:           str.data = aPrefValue;
michael@0:           this.mPrefService.setComplexValue(aPrefName,
michael@0:                                             Components.interfaces.nsISupportsString, str);
michael@0:         }
michael@0:       catch(e)
michael@0:         {
michael@0:         }
michael@0:     },
michael@0:   
michael@0:   copyUnicharPref: function (aPrefName, aDefVal)
michael@0:     {
michael@0:       try
michael@0:         {
michael@0:           return this.mPrefService.getComplexValue(aPrefName,
michael@0:                                                    Components.interfaces.nsISupportsString).data;
michael@0:         }
michael@0:       catch(e)
michael@0:         {
michael@0:           return aDefVal != undefined ? aDefVal : null;
michael@0:         }
michael@0:       return null;        // quiet warnings
michael@0:     },
michael@0:     
michael@0:   setIntPref: function (aPrefName, aPrefValue)
michael@0:     {
michael@0:       try
michael@0:         {
michael@0:           this.mPrefService.setIntPref(aPrefName, aPrefValue);
michael@0:         }
michael@0:       catch(e)
michael@0:         {
michael@0:         }
michael@0:     },
michael@0:   
michael@0:   getIntPref: function (aPrefName, aDefVal)
michael@0:     {
michael@0:       try
michael@0:         {
michael@0:           return this.mPrefService.getIntPref(aPrefName);
michael@0:         }
michael@0:       catch(e)
michael@0:         {
michael@0:           return aDefVal != undefined ? aDefVal : null;
michael@0:         }
michael@0:       return null;        // quiet warnings
michael@0:     },
michael@0: 
michael@0:   getLocalizedUnicharPref: function (aPrefName, aDefVal)
michael@0:     {
michael@0:       try
michael@0:         {
michael@0:           return this.mPrefService.getComplexValue(aPrefName,
michael@0:                                                    Components.interfaces.nsIPrefLocalizedString).data;
michael@0:         }
michael@0:       catch(e)
michael@0:         {
michael@0:           return aDefVal != undefined ? aDefVal : null;
michael@0:         }
michael@0:       return null;        // quiet warnings
michael@0:     }
michael@0: };
michael@0: