3 * Copyright(c) 2006-2009 Ext JS, LLC
5 * http://www.extjs.com/license
10 Ext.Element.addMethods({
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12 * 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().
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13 * @param {String} side Either "left" for scrollLeft values or "top" for scrollTop values.
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14 * @param {Number} value The new scroll value
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15 * @param {Boolean/Object} animate (optional) true for the default animation or a standard Element animation config object
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16 * @return {Element} this
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18 scrollTo : function(side, value, animate){
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19 var top = /top/i.test(side), //check if we're scrolling top or left
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20 prop = 'scroll' + (top ? 'Left' : 'Top'), // if scrolling top, we need to grab scrollLeft, if left, scrollTop
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23 if (!animate || !me.anim) {
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26 me.anim({scroll: {to: top ? [dom[prop], value] : [value, dom[prop]]}},
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27 me.preanim(arguments, 2), 'scroll');
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33 * Scrolls this element into view within the passed container.
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34 * @param {Mixed} container (optional) The container element to scroll (defaults to document.body). Should be a
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35 * string (id), dom node, or Ext.Element.
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36 * @param {Boolean} hscroll (optional) False to disable horizontal scroll (defaults to true)
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37 * @return {Ext.Element} this
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39 scrollIntoView : function(container, hscroll){
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40 var c = Ext.getDom(container) || Ext.getBody().dom,
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42 o = this.getOffsetsTo(c),
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43 l = o[0] + c.scrollLeft,
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44 t = o[1] + c.scrollTop,
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45 b = t + el.offsetHeight,
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46 r = l + el.offsetWidth,
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47 ch = c.clientHeight,
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48 ct = parseInt(c.scrollTop, 10),
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49 cl = parseInt(c.scrollLeft, 10),
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51 cr = cl + c.clientWidth;
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53 if (el.offsetHeight > ch || t < ct) {
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58 c.scrollTop = c.scrollTop; // corrects IE, other browsers will ignore
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60 if(hscroll !== false){
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61 if(el.offsetWidth > c.clientWidth || l < cl){
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64 c.scrollLeft = r - c.clientWidth;
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66 c.scrollLeft = c.scrollLeft;
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72 scrollChildIntoView : function(child, hscroll){
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73 Ext.fly(child, '_scrollChildIntoView').scrollIntoView(this, hscroll);
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77 * Scrolls this element the specified direction. Does bounds checking to make sure the scroll is
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78 * within this element's scrollable range.
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79 * @param {String} direction Possible values are: "l" (or "left"), "r" (or "right"), "t" (or "top", or "up"), "b" (or "bottom", or "down").
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80 * @param {Number} distance How far to scroll the element in pixels
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81 * @param {Boolean/Object} animate (optional) true for the default animation or a standard Element animation config object
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82 * @return {Boolean} Returns true if a scroll was triggered or false if the element
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83 * was scrolled as far as it could go.
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85 scroll : function(direction, distance, animate){
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86 if(!this.isScrollable()){
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90 l = el.scrollLeft, t = el.scrollTop,
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91 w = el.scrollWidth, h = el.scrollHeight,
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92 cw = el.clientWidth, ch = el.clientHeight,
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93 scrolled = false, v,
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95 l: Math.min(l + distance, w-cw),
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96 r: v = Math.max(l - distance, 0),
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97 t: Math.max(t - distance, 0),
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98 b: Math.min(t + distance, h-ch)
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103 direction = direction.substr(0, 1);
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104 if((v = hash[direction]) > -1){
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106 this.scrollTo(direction == 'l' || direction == 'r' ? 'left' : 'top', v, this.preanim(arguments, 2));
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