WindowState close function that works with arrays of windows.

windowstate.js

var WindowState = Construct.extend({ }, {

	/*
	 	Example usage:

	 	WindowState.close('preferences');
	 	
	 	WindowState.close('debug', true);

		WindowState.close('notification', true, function(win) {
			return win.callID = 12345;
		});
	*/
    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;
	}
});