    /**
     * @class Ext.ux.Spotlight
     * UX used to provide a spotlight around a specified component/element.
     */
    Ext.define('Ext.ux.Spotlight', {
        extend: 'Object',

        /**
         * @private
         * The baseCls for the spotlight elements
         */
        baseCls: 'x-spotlight',

        /**
         * @cfg animate {Boolean} True to animate the spotlight change
         * (defaults to true)
         */
        animate: true,

        /**
         * @cfg duration {Integer} The duration of the animation, in milliseconds
         * (defaults to 250)
         */
        duration: 250,

        /**
         * @cfg easing {String} The type of easing for the spotlight animatation
         * (defaults to null)
         */
        easing: null,

        /**
         * @private
         * True if the spotlight is active on the element
         */
        active: false,

        constructor: function(config){
            Ext.apply(this, config);
        },

        /**
         * Create all the elements for the spotlight
         */
        createElements: function() {
            var me = this,
                baseCls = me.baseCls,
                body = Ext.getBody();

            me.right = body.createChild({
                cls: baseCls
            });
            me.left = body.createChild({
                cls: baseCls
            });
            me.top = body.createChild({
                cls: baseCls
            });
            me.bottom = body.createChild({
                cls: baseCls
            });

            me.all = Ext.create('Ext.CompositeElement', [me.right, me.left, me.top, me.bottom]);
        },

        /**
         * Show the spotlight
         */
        show: function(el, callback, scope) {
            var me = this;

            //get the target element
            me.el = Ext.get(el);

            //create the elements if they don't already exist
            if (!me.right) {
                me.createElements();
            }

            if (!me.active) {
                //if the spotlight is not active, show it
                me.all.setDisplayed('');
                me.active = true;
                Ext.EventManager.onWindowResize(me.syncSize, me);
                me.applyBounds(me.animate, false);
            } else {
                //if the spotlight is currently active, just move it
                me.applyBounds(false, false);
            }
        },

        /**
         * Hide the spotlight
         */
        hide: function(callback, scope) {
            var me = this;

            Ext.EventManager.removeResizeListener(me.syncSize, me);

            me.applyBounds(me.animate, true);
        },

        /**
         * Resizes the spotlight with the window size.
         */
        syncSize: function() {
            this.applyBounds(false, false);
        },

        /**
         * Resizes the spotlight depending on the arguments
         * @param {Boolean} animate True to animate the changing of the bounds
         * @param {Boolean} reverse True to reverse the animation
         */
        applyBounds: function(animate, reverse) {
            var me = this,
                box = me.el.getBox(),
                //get the current view width and height
                viewWidth = Ext.Element.getViewWidth(true),
                viewHeight = Ext.Element.getViewHeight(true),
                i = 0,
                config = false,
                from, to, clone;

            //where the element should start (if animation)
            from = {
                right: {
                    x: box.right,
                    y: viewHeight,
                    width: (viewWidth - box.right),
                    height: 0
                },
                left: {
                    x: 0,
                    y: 0,
                    width: box.x,
                    height: 0
                },
                top: {
                    x: viewWidth,
                    y: 0,
                    width: 0,
                    height: box.y
                },
                bottom: {
                    x: 0,
                    y: (box.y + box.height),
                    width: 0,
                    height: (viewHeight - (box.y + box.height)) + 'px'
                }
            };

            //where the element needs to finish
            to = {
                right: {
                    x: box.right,
                    y: box.y,
                    width: (viewWidth - box.right) + 'px',
                    height: (viewHeight - box.y) + 'px'
                },
                left: {
                    x: 0,
                    y: 0,
                    width: box.x + 'px',
                    height: (box.y + box.height) + 'px'
                },
                top: {
                    x: box.x,
                    y: 0,
                    width: (viewWidth - box.x) + 'px',
                    height: box.y + 'px'
                },
                bottom: {
                    x: 0,
                    y: (box.y + box.height),
                    width: (box.x + box.width) + 'px',
                    height: (viewHeight - (box.y + box.height)) + 'px'
                }
            };

            //reverse the objects
            if (reverse) {
                clone = Ext.clone(from);
                from = to;
                to = clone;
            }

            if (animate) {
                Ext.Array.forEach(['right', 'left', 'top', 'bottom'], function(side) {
                    me[side].setBox(from[side]);
                    me[side].animate({
                        duration: me.duration,
                        easing: me.easing,
                        to: to[side]
                    });
                },
                this);
            } else {
                Ext.Array.forEach(['right', 'left', 'top', 'bottom'], function(side) {
                    me[side].setBox(Ext.apply(from[side], to[side]));
                    me[side].repaint();
                },
                this);
            }
        },

        /**
         * Removes all the elements for the spotlight
         */
        destroy: function() {
            var me = this;

            Ext.destroy(me.right, me.left, me.top, me.bottom);
            delete me.el;
            delete me.all;
        }
    });