README.md

@example
var childPanel1 = Ext.create('Ext.panel.Panel', {
    title: 'Child Panel 1',
    html: 'A Panel'
});

var childPanel2 = Ext.create('Ext.panel.Panel', {
    title: 'Child Panel 2',
    html: 'Another Panel'
});

Ext.create('Ext.container.Viewport', {
    items: [ childPanel1, childPanel2 ]
});
Ext.create('Ext.tab.Panel', {
    renderTo: Ext.getBody(),
    height: 100,
    width: 200,
    items: [
        {
            // Explicitly define the xtype of this Component configuration.
            // This tells the Container (the tab panel in this case)
            // to instantiate a Ext.panel.Panel when it deems necessary
            xtype: 'panel',
            title: 'Tab One',
            html: 'The first tab',
            listeners: {
                render: function() {
                    Ext.MessageBox.alert('Rendered One', 'Tab One was rendered.');
                }
            }
        },
        {
            // this component configuration does not have an xtype since 'panel' is the default
            // xtype for all Component configurations in a Container
            title: 'Tab Two',
            html: 'The second tab',
            listeners: {
                render: function() {
                    Ext.MessageBox.alert('Rendered One', 'Tab Two was rendered.');
                }
            }
        }
    ]
});
var panel = Ext.create('Ext.panel.Panel', {
    renderTo: Ext.getBody(),
    title: 'Test',
    html: 'Test Panel',
    hideMode: 'visibility' // use the CSS visibility property to show and hide this component
});

panel.hide(); // hide the component

panel.show(); // show the component
var panel = Ext.create('Ext.panel.Panel', {
    width: 200,
    height: 100,
    floating: true, // make this panel an absolutely-positioned floating component
    title: 'Test',
    html: 'Test Panel'
});
panel.show(); // render and show the floating panel
Ext.define('My.custom.Component', {
    extend: 'Ext.Component'
});
Ext.define('My.custom.Component', {
    extend: 'Ext.Component',
    onRender: function() {
        this.callParent(arguments); // call the superclass onRender method

        // perform additional rendering tasks here.
    }
});
Ext.define('Ext.ux.Image', {
    extend: 'Ext.Component', // subclass Ext.Component
    alias: 'widget.managedimage', // this component will have an xtype of 'managedimage'
    autoEl: {
        tag: 'img',
        src: Ext.BLANK_IMAGE_URL,
        cls: 'my-managed-image'
    },

    // Add custom processing to the onRender phase.
    // Add a ‘load’ listener to the element.
    onRender: function() {
        this.autoEl = Ext.apply({}, this.initialConfig, this.autoEl);
        this.callParent(arguments);
        this.el.on('load', this.onLoad, this);
    },

    onLoad: function() {
        this.fireEvent('load', this);
    },

    setSrc: function(src) {
        if (this.rendered) {
            this.el.dom.src = src;
        } else {
            this.src = src;
        }
    },

    getSrc: function(src) {
        return this.el.dom.src || this.src;
    }
});
var image = Ext.create('Ext.ux.Image');

Ext.create('Ext.panel.Panel', {
    title: 'Image Panel',
    height: 200,
    renderTo: Ext.getBody(),
    items: [ image ]
});

image.on('load', function() {
    console.log('image loaded: ', image.getSrc());
});

image.setSrc('http://www.sencha.com/img/sencha-large.png');