// Test accessor that spontaneously produces outputs once.
//
// Copyright (c) 2016-2017 The Regents of the University of California.
// All rights reserved.
// Permission is hereby granted, without written agreement and without
// license or royalty fees, to use, copy, modify, and distribute this
// software and its documentation for any purpose, provided that the above
// copyright notice and the following two paragraphs appear in all copies
// of this software.
// IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
// FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
// ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
// THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE.
// THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
// PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
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// ENHANCEMENTS, OR MODIFICATIONS.
/** Test accessor that spontaneously produces outputs once per time interval.
* This implementation produces a counting sequence.
*
* @accessor test/TestSpontaneousOnce
* @parameter delay The delay in milliseconds before the value is outputk.
* @parameter value The value to be output after the delay.
* @output output The output port
* @author Christopher Brooks and Edward A. Lee. Based on TestSpontaneous by Edward A. Lee
* @version $$Id$$
*/
// Stop extra messages from jslint. Note that there should be no
// space between the / and the * and global.
/*globals clearTimeout, console, error, exports, require, setTimeout */
/*jshint globalstrict: true*/
"use strict";
exports.setup = function () {
this.parameter('delay', {
'type': 'number',
'value': 1000
});
this.parameter('value', {
'value': true
});
this.output('output');
};
// These variables will not be visible to subclasses.
var handle = null;
exports.initialize = function () {
// Need to record 'this' for use in the callback.
var thiz = this;
handle = setTimeout(function () {
thiz.send('output', thiz.getParameter('value'));
}, this.getParameter('delay'));
};
exports.wrapup = function () {
if (handle) {
clearTimeout(handle);
handle = null;
}
};