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<pre class="prettyprint lang-js">/*!
* Ext JS Library 3.4.0
* Copyright(c) 2006-2011 Sencha Inc.
* licensing@sencha.com
* http://www.sencha.com/license
*/
<div id="cls-Ext.util.ClickRepeater"></div>/**
@class Ext.util.ClickRepeater
@extends Ext.util.Observable
A wrapper class which can be applied to any element. Fires a "click" event while the
mouse is pressed. The interval between firings may be specified in the config but
defaults to 20 milliseconds.
Optionally, a CSS class may be applied to the element during the time it is pressed.
@cfg {Mixed} el The element to act as a button.
@cfg {Number} delay The initial delay before the repeating event begins firing.
Similar to an autorepeat key delay.
@cfg {Number} interval The interval between firings of the "click" event. Default 20 ms.
@cfg {String} pressClass A CSS class name to be applied to the element while pressed.
@cfg {Boolean} accelerate True if autorepeating should start slowly and accelerate.
"interval" and "delay" are ignored.
@cfg {Boolean} preventDefault True to prevent the default click event
@cfg {Boolean} stopDefault True to stop the default click event
@history
2007-02-02 jvs Original code contributed by Nige "Animal" White
2007-02-02 jvs Renamed to ClickRepeater
2007-02-03 jvs Modifications for FF Mac and Safari
@constructor
@param {Mixed} el The element to listen on
@param {Object} config
*/
Ext.util.ClickRepeater = Ext.extend(Ext.util.Observable, {
constructor : function(el, config){
this.el = Ext.get(el);
this.el.unselectable();
Ext.apply(this, config);
this.addEvents(
/**
* @event mousedown
* Fires when the mouse button is depressed.
* @param {Ext.util.ClickRepeater} this
* @param {Ext.EventObject} e
*/
"mousedown",
/**
* @event click
* Fires on a specified interval during the time the element is pressed.
* @param {Ext.util.ClickRepeater} this
* @param {Ext.EventObject} e
*/
"click",
/**
* @event mouseup
* Fires when the mouse key is released.
* @param {Ext.util.ClickRepeater} this
* @param {Ext.EventObject} e
*/
"mouseup"
);
if(!this.disabled){
this.disabled = true;
this.enable();
}
// allow inline handler
if(this.handler){
this.on("click", this.handler, this.scope || this);
}
Ext.util.ClickRepeater.superclass.constructor.call(this);
},
interval : 20,
delay: 250,
preventDefault : true,
stopDefault : false,
timer : 0,
/**
* Enables the repeater and allows events to fire.
*/
enable: function(){
if(this.disabled){
this.el.on('mousedown', this.handleMouseDown, this);
if (Ext.isIE){
this.el.on('dblclick', this.handleDblClick, this);
}
if(this.preventDefault || this.stopDefault){
this.el.on('click', this.eventOptions, this);
}
}
this.disabled = false;
},
/**
* Disables the repeater and stops events from firing.
*/
disable: function(/* private */ force){
if(force || !this.disabled){
clearTimeout(this.timer);
if(this.pressClass){
this.el.removeClass(this.pressClass);
}
Ext.getDoc().un('mouseup', this.handleMouseUp, this);
this.el.removeAllListeners();
}
this.disabled = true;
},
/**
* Convenience function for setting disabled/enabled by boolean.
* @param {Boolean} disabled
*/
setDisabled: function(disabled){
this[disabled ? 'disable' : 'enable']();
},
eventOptions: function(e){
if(this.preventDefault){
e.preventDefault();
}
if(this.stopDefault){
e.stopEvent();
}
},
// private
destroy : function() {
this.disable(true);
Ext.destroy(this.el);
this.purgeListeners();
},
handleDblClick : function(e){
clearTimeout(this.timer);
this.el.blur();
this.fireEvent("mousedown", this, e);
this.fireEvent("click", this, e);
},
// private
handleMouseDown : function(e){
clearTimeout(this.timer);
this.el.blur();
if(this.pressClass){
this.el.addClass(this.pressClass);
}
this.mousedownTime = new Date();
Ext.getDoc().on("mouseup", this.handleMouseUp, this);
this.el.on("mouseout", this.handleMouseOut, this);
this.fireEvent("mousedown", this, e);
this.fireEvent("click", this, e);
// Do not honor delay or interval if acceleration wanted.
if (this.accelerate) {
this.delay = 400;
}
this.timer = this.click.defer(this.delay || this.interval, this, [e]);
},
// private
click : function(e){
this.fireEvent("click", this, e);
this.timer = this.click.defer(this.accelerate ?
this.easeOutExpo(this.mousedownTime.getElapsed(),
400,
-390,
12000) :
this.interval, this, [e]);
},
easeOutExpo : function (t, b, c, d) {
return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
},
// private
handleMouseOut : function(){
clearTimeout(this.timer);
if(this.pressClass){
this.el.removeClass(this.pressClass);
}
this.el.on("mouseover", this.handleMouseReturn, this);
},
// private
handleMouseReturn : function(){
this.el.un("mouseover", this.handleMouseReturn, this);
if(this.pressClass){
this.el.addClass(this.pressClass);
}
this.click();
},
// private
handleMouseUp : function(e){
clearTimeout(this.timer);
this.el.un("mouseover", this.handleMouseReturn, this);
this.el.un("mouseout", this.handleMouseOut, this);
Ext.getDoc().un("mouseup", this.handleMouseUp, this);
this.el.removeClass(this.pressClass);
this.fireEvent("mouseup", this, e);
}
});</pre>
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