/**
 * This control renders echomail
 *
 * The system echomail prefix is *1, with echomail pages built from the following page number:
 * zzzzEEpppp, where:
 * + zzzz	is the zone, zero padded, the zone identifies the message groups
 * + EE		is the echomail area, ie: the message areas
 * + pppp	is the message number, identified by the tag attached to the message header
 *
 * (Tags are added to the messages via an external process.)
 */

// All controls need a unique variable so that require() can know if the control has already been loaded
var CONTROL_ECHOMAIL		= '1';

// Optional debug message so we can see that it is loaded
log(LOG_DEBUG,'+ Control ECHOMAIL loaded');

// A unique method name (same as the control name that is called as new method() on initialisation
function echomail(session,pagenum) {
	log(LOG_DEBUG,' - Loading echomail page:'+pagenum);

	// has this control completed
	var complete = false;
	var ready = false;

	function init(session,pagenum) {
		log(LOG_DEBUG,' - Echomail init('+pagenum+')');

		ready = session.loadMessage(pagenum);
	}

	Object.defineProperty(this, 'getName', {
		get: function () {
			return 'ECHOMAIL';
		}
	});

	Object.defineProperty(this, 'isComplete', {
		get: function () {
			return complete;
		}
	});

	// Handle the keyboard responses as we receive them.
	this.handle = function(read) {
		log(LOG_DEBUG,'Control ECHOMAIL handle() start. ('+read+')');

		switch(read) {
			case KEY_DOWN:
				session.page.scroll(0,1);
				read = '';
				break;

			case KEY_UP:
				session.page.scroll(0,-1);
				read = '';
				break;
		}

		session.render();

		return read;
	}

	/**
	 * ready() is called after a control has been initialised, to determine if the control will take the input
	 * or if it is unable to do so
	 *
	 * If ready() returns:
	 * + false, the main programming will return ERR_ROUTE to the user,
	 * + true, the main programming will continue to load the frame, and then pass input to on the next loop handle()
	 *
	 * @returns {boolean}
	 */
	this.ready = function() {
		log(LOG_DEBUG,'echomail:ready = '+JSON.stringify(ready));
		return ready;
	}

	init.apply(this,arguments);
}