WindowState close function that works with

windowstate.js

var WindowState = Construct.extend({ }, {

    close: function(win, force, predicate) {
    		if(this[win]) {
    			if(can.isArray(this[win])) {
    				// if no predicate is defined, _.filter will return the entire list
    				_.filter(this[win], predicate).forEach(this.proxy(function(item) {
    					var index = this[win].indexOf(item);
    					item.close(true);
    					this[win].splice(index, 1);
    				}));
    			}
    			else {
    				this[win].close(true);
					this[win] = undefined;
    			}

				return true;
    		}

			if(win.id) {
				if(this.main && this.main.id === win.id) {
					this.savePosition('main');
					if (force) {
						// log out from CAS and close window
						Endo.CAS.logout();
						ExoUtils.stopPresenter();
						win.close();
					} else {
						this.hide(win);
					}
				} else if (this.preferences && this.preferences.id === win.id) {
					// preferences data last update before closing
					if (Endo.PreferencesActionThread) {
						Endo.PreferencesActionThread.finalUpdate(
							this.proxy(function(win) {
									win.close();
								},
								win));
					}
				} else {
					win.close();
				}
				return true;
			}

			return false;
		}
	}
});