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+/*!
+ * Ext JS Library 3.0.0
+ * Copyright(c) 2006-2009 Ext JS, LLC
+ * licensing@extjs.com
+ * http://www.extjs.com/license
+ */
+/**
+ * @class Ext.Element
+ */
+/**
+ * Visibility mode constant for use with {@link #setVisibilityMode}. Use visibility to hide element
+ * @static
+ * @type Number
+ */
+Ext.Element.VISIBILITY = 1;
+/**
+ * Visibility mode constant for use with {@link #setVisibilityMode}. Use display to hide element
+ * @static
+ * @type Number
+ */
+Ext.Element.DISPLAY = 2;
+
+Ext.Element.addMethods(function(){
+    var VISIBILITY = "visibility",
+        DISPLAY = "display",
+        HIDDEN = "hidden",
+        NONE = "none",      
+        ORIGINALDISPLAY = 'originalDisplay',
+        VISMODE = 'visibilityMode',
+        ELDISPLAY = Ext.Element.DISPLAY,
+        data = Ext.Element.data,
+        getDisplay = function(dom){
+            var d = data(dom, ORIGINALDISPLAY);
+            if(d === undefined){
+                data(dom, ORIGINALDISPLAY, d = '');
+            }
+            return d;
+        },
+        getVisMode = function(dom){
+            var m = data(dom, VISMODE);
+            if(m === undefined){
+                data(dom, VISMODE, m = 1)
+            }
+            return m;
+        };
+    
+    return {
+        /**
+         * The element's default display mode  (defaults to "")
+         * @type String
+         */
+        originalDisplay : "",
+        visibilityMode : 1,
+        
+        /**
+         * Sets the element's visibility mode. When setVisible() is called it
+         * will use this to determine whether to set the visibility or the display property.
+         * @param visMode Ext.Element.VISIBILITY or Ext.Element.DISPLAY
+         * @return {Ext.Element} this
+         */
+        setVisibilityMode : function(visMode){  
+            data(this.dom, VISMODE, visMode);
+            return this;
+        },
+        
+        /**
+         * Perform custom animation on this element.
+         * <div><ul class="mdetail-params">
+         * <li><u>Animation Properties</u></li>
+         * 
+         * <p>The Animation Control Object enables gradual transitions for any member of an
+         * element's style object that takes a numeric value including but not limited to
+         * these properties:</p><div><ul class="mdetail-params">
+         * <li><tt>bottom, top, left, right</tt></li>
+         * <li><tt>height, width</tt></li>
+         * <li><tt>margin, padding</tt></li>
+         * <li><tt>borderWidth</tt></li>
+         * <li><tt>opacity</tt></li>
+         * <li><tt>fontSize</tt></li>
+         * <li><tt>lineHeight</tt></li>
+         * </ul></div>
+         * 
+         * 
+         * <li><u>Animation Property Attributes</u></li>
+         * 
+         * <p>Each Animation Property is a config object with optional properties:</p>
+         * <div><ul class="mdetail-params">
+         * <li><tt>by</tt>*  : relative change - start at current value, change by this value</li>
+         * <li><tt>from</tt> : ignore current value, start from this value</li>
+         * <li><tt>to</tt>*  : start at current value, go to this value</li>
+         * <li><tt>unit</tt> : any allowable unit specification</li>
+         * <p>* do not specify both <tt>to</tt> and <tt>by</tt> for an animation property</p>
+         * </ul></div>
+         * 
+         * <li><u>Animation Types</u></li>
+         * 
+         * <p>The supported animation types:</p><div><ul class="mdetail-params">
+         * <li><tt>'run'</tt> : Default
+         * <pre><code>
+var el = Ext.get('complexEl');
+el.animate(
+    // animation control object
+    {
+        borderWidth: {to: 3, from: 0},
+        opacity: {to: .3, from: 1},
+        height: {to: 50, from: el.getHeight()},
+        width: {to: 300, from: el.getWidth()},
+        top  : {by: - 100, unit: 'px'},
+    },
+    0.35,      // animation duration
+    null,      // callback
+    'easeOut', // easing method
+    'run'      // animation type ('run','color','motion','scroll')    
+);
+         * </code></pre>
+         * </li>
+         * <li><tt>'color'</tt>
+         * <p>Animates transition of background, text, or border colors.</p>
+         * <pre><code>
+el.animate(
+    // animation control object
+    {
+        color: { to: '#06e' },
+        backgroundColor: { to: '#e06' }
+    },
+    0.35,      // animation duration
+    null,      // callback
+    'easeOut', // easing method
+    'color'    // animation type ('run','color','motion','scroll')    
+);
+         * </code></pre> 
+         * </li>
+         * 
+         * <li><tt>'motion'</tt>
+         * <p>Animates the motion of an element to/from specific points using optional bezier
+         * way points during transit.</p>
+         * <pre><code>
+el.animate(
+    // animation control object
+    {
+        borderWidth: {to: 3, from: 0},
+        opacity: {to: .3, from: 1},
+        height: {to: 50, from: el.getHeight()},
+        width: {to: 300, from: el.getWidth()},
+        top  : {by: - 100, unit: 'px'},
+        points: {
+            to: [50, 100],  // go to this point
+            control: [      // optional bezier way points
+                [ 600, 800],
+                [-100, 200]
+            ]
+        }
+    },
+    3000,      // animation duration (milliseconds!)
+    null,      // callback
+    'easeOut', // easing method
+    'motion'   // animation type ('run','color','motion','scroll')    
+);
+         * </code></pre> 
+         * </li>
+         * <li><tt>'scroll'</tt>
+         * <p>Animate horizontal or vertical scrolling of an overflowing page element.</p>
+         * <pre><code>
+el.animate(
+    // animation control object
+    {
+        scroll: {to: [400, 300]}
+    },
+    0.35,      // animation duration
+    null,      // callback
+    'easeOut', // easing method
+    'scroll'   // animation type ('run','color','motion','scroll')    
+);
+         * </code></pre> 
+         * </li>
+         * </ul></div>
+         * 
+         * </ul></div>
+         * 
+         * @param {Object} args The animation control args
+         * @param {Float} duration (optional) How long the animation lasts in seconds (defaults to <tt>.35</tt>)
+         * @param {Function} onComplete (optional) Function to call when animation completes
+         * @param {String} easing (optional) {@link Ext.Fx#easing} method to use (defaults to <tt>'easeOut'</tt>)
+         * @param {String} animType (optional) <tt>'run'</tt> is the default. Can also be <tt>'color'</tt>,
+         * <tt>'motion'</tt>, or <tt>'scroll'</tt>
+         * @return {Ext.Element} this
+         */
+        animate : function(args, duration, onComplete, easing, animType){       
+            this.anim(args, {duration: duration, callback: onComplete, easing: easing}, animType);
+            return this;
+        },
+    
+        /*
+         * @private Internal animation call
+         */
+        anim : function(args, opt, animType, defaultDur, defaultEase, cb){
+            animType = animType || 'run';
+            opt = opt || {};
+            var me = this,              
+                anim = Ext.lib.Anim[animType](
+                    me.dom, 
+                    args,
+                    (opt.duration || defaultDur) || .35,
+                    (opt.easing || defaultEase) || 'easeOut',
+                    function(){
+                        if(cb) cb.call(me);
+                        if(opt.callback) opt.callback.call(opt.scope || me, me, opt);
+                    },
+                    me
+                );
+            opt.anim = anim;
+            return anim;
+        },
+    
+        // private legacy anim prep
+        preanim : function(a, i){
+            return !a[i] ? false : (Ext.isObject(a[i]) ? a[i]: {duration: a[i+1], callback: a[i+2], easing: a[i+3]});
+        },
+        
+        /**
+         * Checks whether the element is currently visible using both visibility and display properties.         
+         * @return {Boolean} True if the element is currently visible, else false
+         */
+        isVisible : function() {
+            return !this.isStyle(VISIBILITY, HIDDEN) && !this.isStyle(DISPLAY, NONE);
+        },
+        
+        /**
+         * Sets the visibility of the element (see details). If the visibilityMode is set to Element.DISPLAY, it will use
+         * the display property to hide the element, otherwise it uses visibility. The default is to hide and show using the visibility property.
+         * @param {Boolean} visible Whether the element is visible
+         * @param {Boolean/Object} animate (optional) True for the default animation, or a standard Element animation config object
+         * @return {Ext.Element} this
+         */
+         setVisible : function(visible, animate){
+            var me = this,
+                dom = me.dom,
+                isDisplay = getVisMode(this.dom) == ELDISPLAY;
+                
+            if (!animate || !me.anim) {
+                if(isDisplay){
+                    me.setDisplayed(visible);
+                }else{
+                    me.fixDisplay();
+                    dom.style.visibility = visible ? "visible" : HIDDEN;
+                }
+            }else{
+                // closure for composites            
+                if(visible){
+                    me.setOpacity(.01);
+                    me.setVisible(true);
+                }
+                me.anim({opacity: { to: (visible?1:0) }},
+                        me.preanim(arguments, 1),
+                        null,
+                        .35,
+                        'easeIn',
+                        function(){
+                             if(!visible){
+                                 dom.style[isDisplay ? DISPLAY : VISIBILITY] = (isDisplay) ? NONE : HIDDEN;                     
+                                 Ext.fly(dom).setOpacity(1);
+                             }
+                        });
+            }
+            return me;
+        },
+    
+        /**
+         * Toggles the element's visibility or display, depending on visibility mode.
+         * @param {Boolean/Object} animate (optional) True for the default animation, or a standard Element animation config object
+         * @return {Ext.Element} this
+         */
+        toggle : function(animate){
+            var me = this;
+            me.setVisible(!me.isVisible(), me.preanim(arguments, 0));
+            return me;
+        },
+    
+        /**
+         * Sets the CSS display property. Uses originalDisplay if the specified value is a boolean true.
+         * @param {Mixed} value Boolean value to display the element using its default display, or a string to set the display directly.
+         * @return {Ext.Element} this
+         */
+        setDisplayed : function(value) {            
+            if(typeof value == "boolean"){
+               value = value ? getDisplay(this.dom) : NONE;
+            }
+            this.setStyle(DISPLAY, value);
+            return this;
+        },
+        
+        // private
+        fixDisplay : function(){
+            var me = this;
+            if(me.isStyle(DISPLAY, NONE)){
+                me.setStyle(VISIBILITY, HIDDEN);
+                me.setStyle(DISPLAY, getDisplay(this.dom)); // first try reverting to default
+                if(me.isStyle(DISPLAY, NONE)){ // if that fails, default to block
+                    me.setStyle(DISPLAY, "block");
+                }
+            }
+        },
+    
+        /**
+         * Hide this element - Uses display mode to determine whether to use "display" or "visibility". See {@link #setVisible}.
+         * @param {Boolean/Object} animate (optional) true for the default animation or a standard Element animation config object
+         * @return {Ext.Element} this
+         */
+        hide : function(animate){
+            this.setVisible(false, this.preanim(arguments, 0));
+            return this;
+        },
+    
+        /**
+        * Show this element - Uses display mode to determine whether to use "display" or "visibility". See {@link #setVisible}.
+        * @param {Boolean/Object} animate (optional) true for the default animation or a standard Element animation config object
+         * @return {Ext.Element} this
+         */
+        show : function(animate){
+            this.setVisible(true, this.preanim(arguments, 0));
+            return this;
+        }
+    }
+}());
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