--- /dev/null
+<html>\r
+<head>\r
+ <title>The source code</title>\r
+ <link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />\r
+ <script type="text/javascript" src="../resources/prettify/prettify.js"></script>\r
+</head>\r
+<body onload="prettyPrint();">\r
+ <pre class="prettyprint lang-js"><div id="cls-Ext.Shadow"></div>/**
+ * @class Ext.Shadow
+ * Simple class that can provide a shadow effect for any element. Note that the element MUST be absolutely positioned,
+ * and the shadow does not provide any shimming. This should be used only in simple cases -- for more advanced
+ * functionality that can also provide the same shadow effect, see the {@link Ext.Layer} class.
+ * @constructor
+ * Create a new Shadow
+ * @param {Object} config The config object
+ */
+Ext.Shadow = function(config){
+ Ext.apply(this, config);
+ if(typeof this.mode != "string"){
+ this.mode = this.defaultMode;
+ }
+ var o = this.offset, a = {h: 0};
+ var rad = Math.floor(this.offset/2);
+ switch(this.mode.toLowerCase()){ // all this hideous nonsense calculates the various offsets for shadows
+ case "drop":
+ a.w = 0;
+ a.l = a.t = o;
+ a.t -= 1;
+ if(Ext.isIE){
+ a.l -= this.offset + rad;
+ a.t -= this.offset + rad;
+ a.w -= rad;
+ a.h -= rad;
+ a.t += 1;
+ }
+ break;
+ case "sides":
+ a.w = (o*2);
+ a.l = -o;
+ a.t = o-1;
+ if(Ext.isIE){
+ a.l -= (this.offset - rad);
+ a.t -= this.offset + rad;
+ a.l += 1;
+ a.w -= (this.offset - rad)*2;
+ a.w -= rad + 1;
+ a.h -= 1;
+ }
+ break;
+ case "frame":
+ a.w = a.h = (o*2);
+ a.l = a.t = -o;
+ a.t += 1;
+ a.h -= 2;
+ if(Ext.isIE){
+ a.l -= (this.offset - rad);
+ a.t -= (this.offset - rad);
+ a.l += 1;
+ a.w -= (this.offset + rad + 1);
+ a.h -= (this.offset + rad);
+ a.h += 1;
+ }
+ break;
+ };
+
+ this.adjusts = a;
+};
+
+Ext.Shadow.prototype = {
+ <div id="cfg-Ext.Shadow-mode"></div>/**
+ * @cfg {String} mode
+ * The shadow display mode. Supports the following options:<div class="mdetail-params"><ul>
+ * <li><b><tt>sides</tt></b> : Shadow displays on both sides and bottom only</li>
+ * <li><b><tt>frame</tt></b> : Shadow displays equally on all four sides</li>
+ * <li><b><tt>drop</tt></b> : Traditional bottom-right drop shadow</li>
+ * </ul></div>
+ */
+ <div id="cfg-Ext.Shadow-offset"></div>/**
+ * @cfg {String} offset
+ * The number of pixels to offset the shadow from the element (defaults to <tt>4</tt>)
+ */
+ offset: 4,
+
+ // private
+ defaultMode: "drop",
+
+ <div id="method-Ext.Shadow-show"></div>/**
+ * Displays the shadow under the target element
+ * @param {Mixed} targetEl The id or element under which the shadow should display
+ */
+ show : function(target){
+ target = Ext.get(target);
+ if(!this.el){
+ this.el = Ext.Shadow.Pool.pull();
+ if(this.el.dom.nextSibling != target.dom){
+ this.el.insertBefore(target);
+ }
+ }
+ this.el.setStyle("z-index", this.zIndex || parseInt(target.getStyle("z-index"), 10)-1);
+ if(Ext.isIE){
+ this.el.dom.style.filter="progid:DXImageTransform.Microsoft.alpha(opacity=50) progid:DXImageTransform.Microsoft.Blur(pixelradius="+(this.offset)+")";
+ }
+ this.realign(
+ target.getLeft(true),
+ target.getTop(true),
+ target.getWidth(),
+ target.getHeight()
+ );
+ this.el.dom.style.display = "block";
+ },
+
+ <div id="method-Ext.Shadow-isVisible"></div>/**
+ * Returns true if the shadow is visible, else false
+ */
+ isVisible : function(){
+ return this.el ? true : false;
+ },
+
+ <div id="method-Ext.Shadow-realign"></div>/**
+ * Direct alignment when values are already available. Show must be called at least once before
+ * calling this method to ensure it is initialized.
+ * @param {Number} left The target element left position
+ * @param {Number} top The target element top position
+ * @param {Number} width The target element width
+ * @param {Number} height The target element height
+ */
+ realign : function(l, t, w, h){
+ if(!this.el){
+ return;
+ }
+ var a = this.adjusts, d = this.el.dom, s = d.style;
+ var iea = 0;
+ s.left = (l+a.l)+"px";
+ s.top = (t+a.t)+"px";
+ var sw = (w+a.w), sh = (h+a.h), sws = sw +"px", shs = sh + "px";
+ if(s.width != sws || s.height != shs){
+ s.width = sws;
+ s.height = shs;
+ if(!Ext.isIE){
+ var cn = d.childNodes;
+ var sww = Math.max(0, (sw-12))+"px";
+ cn[0].childNodes[1].style.width = sww;
+ cn[1].childNodes[1].style.width = sww;
+ cn[2].childNodes[1].style.width = sww;
+ cn[1].style.height = Math.max(0, (sh-12))+"px";
+ }
+ }
+ },
+
+ <div id="method-Ext.Shadow-hide"></div>/**
+ * Hides this shadow
+ */
+ hide : function(){
+ if(this.el){
+ this.el.dom.style.display = "none";
+ Ext.Shadow.Pool.push(this.el);
+ delete this.el;
+ }
+ },
+
+ <div id="method-Ext.Shadow-setZIndex"></div>/**
+ * Adjust the z-index of this shadow
+ * @param {Number} zindex The new z-index
+ */
+ setZIndex : function(z){
+ this.zIndex = z;
+ if(this.el){
+ this.el.setStyle("z-index", z);
+ }
+ }
+};
+
+// Private utility class that manages the internal Shadow cache
+Ext.Shadow.Pool = function(){
+ var p = [];
+ var markup = Ext.isIE ?
+ '<div class="x-ie-shadow"></div>' :
+ '<div class="x-shadow"><div class="xst"><div class="xstl"></div><div class="xstc"></div><div class="xstr"></div></div><div class="xsc"><div class="xsml"></div><div class="xsmc"></div><div class="xsmr"></div></div><div class="xsb"><div class="xsbl"></div><div class="xsbc"></div><div class="xsbr"></div></div></div>';
+ return {
+ pull : function(){
+ var sh = p.shift();
+ if(!sh){
+ sh = Ext.get(Ext.DomHelper.insertHtml("beforeBegin", document.body.firstChild, markup));
+ sh.autoBoxAdjust = false;
+ }
+ return sh;
+ },
+
+ push : function(sh){
+ p.push(sh);
+ }
+ };
+}();</pre> \r
+</body>\r
+</html>
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