    /**
     * Simple helper class for easily creating image components. This renders an image tag to
     * the DOM with the configured src.
     *
     * {@img Ext.Img/Ext.Img.png Ext.Img component}
     *
     * ## Example usage:
     *
     *     var changingImage = Ext.create('Ext.Img', {
     *         src: 'http://www.sencha.com/img/20110215-feat-html5.png',
     *         renderTo: Ext.getBody()
     *     });
     *
     *     // change the src of the image programmatically
     *     changingImage.setSrc('http://www.sencha.com/img/20110215-feat-perf.png');
     *
     * By default, only an img element is rendered and that is this component's primary
     * {@link Ext.AbstractComponent#getEl element}. If the {@link Ext.AbstractComponent#autoEl} property
     * is other than 'img' (the default), the a child img element will be added to the primary
     * element. This can be used to create a wrapper element around the img.
     *
     * ## Wrapping the img in a div:
     *
     *     var wrappedImage = Ext.create('Ext.Img', {
     *         src: 'http://www.sencha.com/img/20110215-feat-html5.png',
     *         autoEl: 'div', // wrap in a div
     *         renderTo: Ext.getBody()
     *     });
     */
    Ext.define('Ext.Img', {
        extend: 'Ext.Component',
        alias: ['widget.image', 'widget.imagecomponent'],

        autoEl: 'img',

        /**
         * @cfg {String} src
         * The image src.
         */
        src: '',

        /**
         * @cfg {String} alt
         * The descriptive text for non-visual UI description.
         */
        alt: '',

        /**
         * @cfg {String} imgCls
         * Optional CSS classes to add to the img element.
         */
        imgCls: '',

        getElConfig: function() {
            var me = this,
                config = me.callParent(),
                img;

            // It is sometimes helpful (like in a panel header icon) to have the img wrapped
            // by a div. If our autoEl is not 'img' then we just add an img child to the el.
            if (me.autoEl == 'img') {
                img = config;
            } else {
                config.cn = [img = {
                    tag: 'img',
                    id: me.id + '-img'
                }];
            }

            if (me.imgCls) {
                img.cls = (img.cls ? img.cls + ' ' : '') + me.imgCls;
            }

            img.src = me.src || Ext.BLANK_IMAGE_URL;
            if (me.alt) {
                img.alt = me.alt;
            }

            return config;
        },

        onRender: function () {
            var me = this,
                el;

            me.callParent(arguments);

            el = me.el;
            me.imgEl = (me.autoEl == 'img') ? el : el.getById(me.id + '-img');
        },

        onDestroy: function () {
            Ext.destroy(this.imgEl);
            this.imgEl = null;
            this.callParent();
        },

        /**
         * Updates the {@link #src} of the image.
         * @param {String} src
         */
        setSrc: function(src) {
            var me = this,
                imgEl = me.imgEl;

            me.src = src;

            if (imgEl) {
                imgEl.dom.src = src || Ext.BLANK_IMAGE_URL;
            }
        }
    });