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<pre class="prettyprint lang-js"><span id='Ext-Element'>/**
</span> * @class Ext.Element
*/
Ext.Element.addMethods({
<span id='Ext-Element-method-scrollTo'> /**
</span> * 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) {
//check if we're scrolling top or left
var top = /top/i.test(side),
me = this,
dom = me.dom,
prop;
if (!animate || !me.anim) {
// just setting the value, so grab the direction
prop = 'scroll' + (top ? 'Top' : 'Left');
dom[prop] = value;
}
else {
// if scrolling top, we need to grab scrollLeft, if left, scrollTop
prop = 'scroll' + (top ? 'Left' : 'Top');
me.anim({scroll: {to: top ? [dom[prop], value] : [value, dom[prop]]}}, me.preanim(arguments, 2), 'scroll');
}
return me;
},
<span id='Ext-Element-method-scrollIntoView'> /**
</span> * 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;
}
// corrects IE, other browsers will ignore
c.scrollTop = c.scrollTop;
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);
},
<span id='Ext-Element-method-scroll'> /**
</span> * 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 false;
}
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>
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