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upgraded yui to 2.2.2 and yui-ext to 1.0.1a

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JT Smith 2007-07-05 04:23:55 +00:00
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<html><head><title>ScrollManager.js</title><link rel="stylesheet" type="text/css" href="../resources/style.css" media="screen"/></head><body><h1>ScrollManager.js</h1><pre class="highlighted"><code><i>/**
* @class Ext.dd.ScrollManager
* Provides automatic scrolling of overflow regions <b>in</b> the page during drag operations.&lt;br&gt;&lt;br&gt;
* &lt;b&gt;Note: This class uses &quot;Point Mode&quot; and is untested <b>in</b> &quot;Intersect Mode&quot;.&lt;/b&gt;
* @singleton
*/</i>
Ext.dd.ScrollManager = <b>function</b>(){
<b>var</b> ddm = Ext.dd.DragDropMgr;
<b>var</b> els = {};
<b>var</b> dragEl = null;
<b>var</b> proc = {};
<b>var</b> onStop = <b>function</b>(e){
dragEl = null;
clearProc();
};
<b>var</b> triggerRefresh = <b>function</b>(){
<b>if</b>(ddm.dragCurrent){
ddm.refreshCache(ddm.dragCurrent.groups);
}
};
<b>var</b> doScroll = <b>function</b>(){
<b>if</b>(ddm.dragCurrent){
<b>var</b> dds = Ext.dd.ScrollManager;
<b>if</b>(!dds.animate){
<b>if</b>(proc.el.scroll(proc.dir, dds.increment)){
triggerRefresh();
}
}<b>else</b>{
proc.el.scroll(proc.dir, dds.increment, true, dds.animDuration, triggerRefresh);
}
}
};
<b>var</b> clearProc = <b>function</b>(){
<b>if</b>(proc.id){
clearInterval(proc.id);
}
proc.id = 0;
proc.el = null;
proc.dir = &quot;&quot;;
};
<b>var</b> startProc = <b>function</b>(el, dir){
clearProc();
proc.el = el;
proc.dir = dir;
proc.id = setInterval(doScroll, Ext.dd.ScrollManager.frequency);
};
<b>var</b> onFire = <b>function</b>(e, isDrop){
<b>if</b>(isDrop || !ddm.dragCurrent){ <b>return</b>; }
<b>var</b> dds = Ext.dd.ScrollManager;
<b>if</b>(!dragEl || dragEl != ddm.dragCurrent){
dragEl = ddm.dragCurrent;
<i>// refresh regions on drag start</i>
dds.refreshCache();
}
<b>var</b> xy = Ext.lib.Event.getXY(e);
<b>var</b> pt = <b>new</b> Ext.lib.Point(xy[0], xy[1]);
<b>for</b>(var id <b>in</b> els){
<b>var</b> el = els[id], r = el._region;
<b>if</b>(r.contains(pt) &amp;&amp; el.isScrollable()){
<b>if</b>(r.bottom - pt.y &lt;= dds.thresh){
<b>if</b>(proc.el != el){
startProc(el, &quot;down&quot;);
}
<b>return</b>;
}<b>else</b> if(r.right - pt.x &lt;= dds.thresh){
<b>if</b>(proc.el != el){
startProc(el, &quot;left&quot;);
}
<b>return</b>;
}<b>else</b> if(pt.y - r.top &lt;= dds.thresh){
<b>if</b>(proc.el != el){
startProc(el, &quot;up&quot;);
}
<b>return</b>;
}<b>else</b> if(pt.x - r.left &lt;= dds.thresh){
<b>if</b>(proc.el != el){
startProc(el, &quot;right&quot;);
}
<b>return</b>;
}
}
}
clearProc();
};
ddm.fireEvents = ddm.fireEvents.createSequence(onFire, ddm);
ddm.stopDrag = ddm.stopDrag.createSequence(onStop, ddm);
<b>return</b> {
<i>/**
* Registers <b>new</b> overflow element(s) to auto scroll
* @param {String/HTMLElement/Element/Array} el The id of or the element to be scrolled or an array of either
*/</i>
register : <b>function</b>(el){
<b>if</b>(el instanceof Array){
<b>for</b>(var i = 0, len = el.length; i &lt; len; i++) {
<b>this</b>.register(el[i]);
}
}<b>else</b>{
el = Ext.get(el);
els[el.id] = el;
}
},
<i>/**
* Unregisters overflow element(s) so they are no longer scrolled
* @param {String/HTMLElement/Element/Array} el The id of or the element to be removed or an array of either
*/</i>
unregister : <b>function</b>(el){
<b>if</b>(el instanceof Array){
<b>for</b>(var i = 0, len = el.length; i &lt; len; i++) {
<b>this</b>.unregister(el[i]);
}
}<b>else</b>{
el = Ext.get(el);
<b>delete</b> els[el.id];
}
},
<i>/**
* The number of pixels from the edge of a container the pointer needs to be to
* trigger scrolling (defaults to 25)
* @type Number
*/</i>
thresh : 25,
<i>/**
* The number of pixels to scroll <b>in</b> each scroll increment (defaults to 50)
* @type Number
*/</i>
increment : 100,
<i>/**
* The frequency of scrolls <b>in</b> milliseconds (defaults to 500)
* @type Number
*/</i>
frequency : 500,
<i>/**
* True to animate the scroll (defaults to true)
* @type Boolean
*/</i>
animate: true,
<i>/**
* The animation duration <b>in</b> seconds -
* MUST BE less than Ext.dd.ScrollManager.frequency! (defaults to .4)
* @type Number
*/</i>
animDuration: .4,
<i>/**
* Manually trigger a cache refresh.
*/</i>
refreshCache : <b>function</b>(){
<b>for</b>(var id <b>in</b> els){
<b>if</b>(typeof els[id] == 'object'){ <i>// <b>for</b> people extending the object prototype</i>
els[id]._region = els[id].getRegion();
}
}
}
};
}();</code></pre><hr><div style="font-size:10px;text-align:center;color:gray;">Ext - Copyright &copy; 2006-2007 Ext JS, LLC<br />All rights reserved.</div>
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