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<html>
<head>
<title>The source code</title>
<link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />
<script type="text/javascript" src="../resources/prettify/prettify.js"></script>
</head>
<body onload="prettyPrint();">
<pre class="prettyprint lang-js">/*!
* Ext JS Library 3.0.3
* Copyright(c) 2006-2009 Ext JS, LLC
* licensing@extjs.com
* http://www.extjs.com/license
*/
/**
* @class Ext.Element
*/
Ext.Element.addMethods({
<div id="method-Ext.Element-scrollTo"></div>/**
* Scrolls this element the specified scroll point. It does NOT do bounds checking so if you scroll to a weird value it will try to do it. For auto bounds checking, use scroll().
* @param {String} side Either "left" for scrollLeft values or "top" for scrollTop values.
* @param {Number} value The new scroll value
* @param {Boolean/Object} animate (optional) true for the default animation or a standard Element animation config object
* @return {Element} this
*/
scrollTo : function(side, value, animate){
var top = /top/i.test(side), //check if we're scrolling top or left
prop = 'scroll' + (top ? 'Left' : 'Top'), // if scrolling top, we need to grab scrollLeft, if left, scrollTop
me = this,
dom = me.dom;
if (!animate || !me.anim) {
dom[prop] = value;
} else {
me.anim({scroll: {to: top ? [dom[prop], value] : [value, dom[prop]]}},
me.preanim(arguments, 2), 'scroll');
}
return me;
},
<div id="method-Ext.Element-scrollIntoView"></div>/**
* Scrolls this element into view within the passed container.
* @param {Mixed} container (optional) The container element to scroll (defaults to document.body). Should be a
* string (id), dom node, or Ext.Element.
* @param {Boolean} hscroll (optional) False to disable horizontal scroll (defaults to true)
* @return {Ext.Element} this
*/
scrollIntoView : function(container, hscroll){
var c = Ext.getDom(container) || Ext.getBody().dom,
el = this.dom,
o = this.getOffsetsTo(c),
l = o[0] + c.scrollLeft,
t = o[1] + c.scrollTop,
b = t + el.offsetHeight,
r = l + el.offsetWidth,
ch = c.clientHeight,
ct = parseInt(c.scrollTop, 10),
cl = parseInt(c.scrollLeft, 10),
cb = ct + ch,
cr = cl + c.clientWidth;
if (el.offsetHeight > ch || t < ct) {
c.scrollTop = t;
} else if (b > cb){
c.scrollTop = b-ch;
}
c.scrollTop = c.scrollTop; // corrects IE, other browsers will ignore
if(hscroll !== false){
if(el.offsetWidth > c.clientWidth || l < cl){
c.scrollLeft = l;
}else if(r > cr){
c.scrollLeft = r - c.clientWidth;
}
c.scrollLeft = c.scrollLeft;
}
return this;
},
// private
scrollChildIntoView : function(child, hscroll){
Ext.fly(child, '_scrollChildIntoView').scrollIntoView(this, hscroll);
},
<div id="method-Ext.Element-scroll"></div>/**
* Scrolls this element the specified direction. Does bounds checking to make sure the scroll is
* within this element's scrollable range.
* @param {String} direction Possible values are: "l" (or "left"), "r" (or "right"), "t" (or "top", or "up"), "b" (or "bottom", or "down").
* @param {Number} distance How far to scroll the element in pixels
* @param {Boolean/Object} animate (optional) true for the default animation or a standard Element animation config object
* @return {Boolean} Returns true if a scroll was triggered or false if the element
* was scrolled as far as it could go.
*/
scroll : function(direction, distance, animate){
if(!this.isScrollable()){
return;
}
var el = this.dom,
l = el.scrollLeft, t = el.scrollTop,
w = el.scrollWidth, h = el.scrollHeight,
cw = el.clientWidth, ch = el.clientHeight,
scrolled = false, v,
hash = {
l: Math.min(l + distance, w-cw),
r: v = Math.max(l - distance, 0),
t: Math.max(t - distance, 0),
b: Math.min(t + distance, h-ch)
};
hash.d = hash.b;
hash.u = hash.t;
direction = direction.substr(0, 1);
if((v = hash[direction]) > -1){
scrolled = true;
this.scrollTo(direction == 'l' || direction == 'r' ? 'left' : 'top', v, this.preanim(arguments, 2));
}
return scrolled;
}
});</pre>
</body>
</html>
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