Callback examples

example1.js

//------------ ui.js -------------

/**
 * AlertDialog component with callback function
 * @param { Object } _params Ti.UI.AlertDialog properties
 *                 			and optional "callback"
 */
exports.Alert = function(_params){
	_params = _params || {};

	var callback = _params.callback;
	if(callback != null){
		delete _params.callback;
	}
	var a = Ti.UI.createAlertDialog(_params);

	if(callback){
		a.addEventListener('click', callback)
	}

	return a;
}

// ----------- some other file.js ------------

/** how to use */
var UI = require('ui');

var warning = UI.Alert({
	title: 'Warning!',
	message: 'This is a cool alert message',
	buttonNames: ['Ok', 'Sure'],
	callback: function(_event){
		// do something with the event
		// switch (_event.index){
		// 		case 0: ....
		// 		break ......
		// }
	}
});

example2.js

// ----------- some file.js ------------

/**
 * Example of UI element with callback
 * @param { Object }   _params  Ti.UI.TableView properties
 * @param { Function } callback fires when clicked on table
 */
function CustomTable(_params, callback){
	var table = Ti.UI.createTableView(_params);
	// use this:
	if(callback){
		table.addEventListener('click', callback);
	}
	// instead of this:
	/**
		table.addEventListener('click', function(_event){
			Ti.App.fireEvent('table_clicked', _event)
		});
	 */
	return table;
}

/** how to use */
var table = CustomTable({
	data: [
		{title: 'Hello from row 1'},
		{title: 'Hello from row 2'}
	]
}, function(_event){
	alert(_event.rowData);
});