rem: var selection = this._tree.view.selection; 
add: var selection = this._tree.view.selection; 
context:     removeEditorHandler: function()    {        var selection = this._tree.view.selection;         if (selection.count < 1)            return;        var item = this._data[selection.currentIndex];        this._data.splice(selection.currentIndex, 1);        this._tree.view = this._treeView;               try {            var editors = prefs.getCharPref(this._prefName).split(",");            this._FBL.remove(editors, item.id);            prefs.setCharPref(this._prefName, editors.join(","));            prefs.deleteBranch(this._prefName+"."+item.id);        }        catch(exc)        {            this._FBL.ERROR(exc);        }    },
meta: 7450	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/7450/e1d42ad3fad63b72826a4e2ed0726866484c9ac3/editors.js/buggy/extension/content/firebug/editors.js