    /**
     * A specialized floating Component that supports a drop status icon, {@link Ext.Layer} styles
     * and auto-repair.  This is the default drag proxy used by all Ext.dd components.
     */
    Ext.define('Ext.dd.StatusProxy', {
        extend: 'Ext.Component',
        animRepair: false,

        childEls: [
            'ghost'
        ],

        renderTpl: [
            '<div class="' + Ext.baseCSSPrefix + 'dd-drop-icon"></div>' +
            '<div id="{id}-ghost" class="' + Ext.baseCSSPrefix + 'dd-drag-ghost"></div>'
        ],

        repairCls: Ext.baseCSSPrefix + 'dd-drag-repair',

        /**
         * Creates new StatusProxy.
         * @param {Object} [config] Config object.
         */
        constructor: function(config) {
            var me = this;

            config = config || {};

            Ext.apply(me, {
                hideMode: 'visibility',
                hidden: true,
                floating: true,
                id: me.id || Ext.id(),
                cls: Ext.baseCSSPrefix + 'dd-drag-proxy ' + this.dropNotAllowed,
                shadow: config.shadow || false,
                renderTo: Ext.getDetachedBody()
            });
            me.callParent(arguments);
            this.dropStatus = this.dropNotAllowed;
        },

        /**
         * @cfg {String} dropAllowed
         * The CSS class to apply to the status element when drop is allowed.
         */
        dropAllowed : Ext.baseCSSPrefix + 'dd-drop-ok',

        /**
         * @cfg {String} dropNotAllowed
         * The CSS class to apply to the status element when drop is not allowed.
         */
        dropNotAllowed : Ext.baseCSSPrefix + 'dd-drop-nodrop',

        /**
         * Updates the proxy's visual element to indicate the status of whether or not drop is allowed
         * over the current target element.
         * @param {String} cssClass The css class for the new drop status indicator image
         */
        setStatus : function(cssClass){
            cssClass = cssClass || this.dropNotAllowed;
            if (this.dropStatus != cssClass) {
                this.el.replaceCls(this.dropStatus, cssClass);
                this.dropStatus = cssClass;
            }
        },

        /**
         * Resets the status indicator to the default dropNotAllowed value
         * @param {Boolean} clearGhost True to also remove all content from the ghost, false to preserve it
         */
        reset : function(clearGhost){
            var me = this,
                clsPrefix = Ext.baseCSSPrefix + 'dd-drag-proxy ';

            me.el.replaceCls(clsPrefix + me.dropAllowed, clsPrefix + me.dropNotAllowed);
            me.dropStatus = me.dropNotAllowed;
            if (clearGhost) {
                me.ghost.update('');
            }
        },

        /**
         * Updates the contents of the ghost element
         * @param {String/HTMLElement} html The html that will replace the current innerHTML of the ghost element, or a
         * DOM node to append as the child of the ghost element (in which case the innerHTML will be cleared first).
         */
        update : function(html){
            if (typeof html == "string") {
                this.ghost.update(html);
            } else {
                this.ghost.update("");
                html.style.margin = "0";
                this.ghost.dom.appendChild(html);
            }
            var el = this.ghost.dom.firstChild;
            if (el) {
                Ext.fly(el).setStyle('float', 'none');
            }
        },

        /**
         * Returns the ghost element
         * @return {Ext.Element} el
         */
        getGhost : function(){
            return this.ghost;
        },

        /**
         * Hides the proxy
         * @param {Boolean} clear True to reset the status and clear the ghost contents,
         * false to preserve them
         */
        hide : function(clear) {
            this.callParent();
            if (clear) {
                this.reset(true);
            }
        },

        /**
         * Stops the repair animation if it's currently running
         */
        stop : function(){
            if (this.anim && this.anim.isAnimated && this.anim.isAnimated()) {
                this.anim.stop();
            }
        },

        /**
         * Force the Layer to sync its shadow and shim positions to the element
         */
        sync : function(){
            this.el.sync();
        },

        /**
         * Causes the proxy to return to its position of origin via an animation.
         * Should be called after an invalid drop operation by the item being dragged.
         * @param {Number[]} xy The XY position of the element ([x, y])
         * @param {Function} callback The function to call after the repair is complete.
         * @param {Object} scope The scope (`this` reference) in which the callback function is executed.
         * Defaults to the browser window.
         */
        repair : function(xy, callback, scope) {
            var me = this;

            me.callback = callback;
            me.scope = scope;
            if (xy && me.animRepair !== false) {
                me.el.addCls(me.repairCls);
                me.el.hideUnders(true);
                me.anim = me.el.animate({
                    duration: me.repairDuration || 500,
                    easing: 'ease-out',
                    to: {
                        x: xy[0],
                        y: xy[1]
                    },
                    stopAnimation: true,
                    callback: me.afterRepair,
                    scope: me
                });
            } else {
                me.afterRepair();
            }
        },

        // private
        afterRepair : function() {
            var me = this;

            me.hide(true);
            me.el.removeCls(me.repairCls);
            if (typeof me.callback == "function") {
                me.callback.call(me.scope || me);
            }
            delete me.callback;
            delete me.scope;
        }
    });