dat.gui/src/dat/controllers/FunctionController.js

/**
 * dat-gui JavaScript Controller Library
 * http://code.google.com/p/dat-gui
 *
 * Copyright 2011 Data Arts Team, Google Creative Lab
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 */

var Controller = require('./Controller'),
    dom = require('../dom/dom'),
    common = require('../utils/common');

/**
 * @class Provides a GUI interface to fire a specified method, a property of an object.
 *
 * @extends dat.controllers.Controller
 *
 * @param {Object} object The object to be manipulated
 * @param {string} property The name of the property to be manipulated
 *
 * @member dat.controllers
 */
var FunctionController = function(object, property, text) {

    FunctionController.superclass.call(this, object, property);

    var _this = this;

    this.__button = document.createElement('div');
    this.__button.innerHTML = text === undefined ? 'Fire' : text;
    dom.bind(this.__button, 'click', function(e) {
        e.preventDefault();
        _this.fire();
        return false;
    });

    dom.addClass(this.__button, 'button');

    this.domElement.appendChild(this.__button);


};

FunctionController.superclass = Controller;

common.extend(

    FunctionController.prototype,
    Controller.prototype,
    {

        fire: function() {
            if (this.__onChange) {
                this.__onChange.call(this);
            }
            this.getValue().call(this.object);
            if (this.__onFinishChange) {
                this.__onFinishChange.call(this, this.getValue());
            }
        }
    }

);

module.exports = FunctionController;