export default function () {
    Ext.define('Ext.ux.IFrame', {
        extend: 'Ext.Component',
        alias: 'widget.uxiframe',
        loadMask: 'Loading...',
        src: 'about:blank',
        renderTpl: [
            '<iframe src="{src}" id="{id}-iframeEl" data-ref="iframeEl" name="{frameName}" width="100%" height="100%" frameborder="0"></iframe>'
        ],
        childEls: ['iframeEl'],

        initComponent: function () {
            this.superclass.initComponent.call(this)
            this.superclass.initEvents.call(this)
            this.frameName = this.frameName || this.id + '-frame';
        },

        initEvents: function () {
            var me = this;
            this.superclass.initEvents.call(this)
            me.iframeEl.on('load', me.onLoad, me);
        },

        initRenderData: function () {
            return Ext.apply(this.superclass.initRenderData.call(this), {
                src: this.src,
                frameName: this.frameName
            });
        },

        getBody: function () {
            var doc = this.getDoc();
            return doc.body || doc.documentElement;
        },

        getDoc: function () {
            try {
                return this.getWin().document;
            } catch (ex) {
                return null;
            }
        },

        getWin: function () {
            var me = this,
                name = me.frameName,
                win = Ext.isIE ? me.iframeEl.dom.contentWindow : window.frames[name];
            return win;
        },

        getFrame: function () {
            var me = this;
            return me.iframeEl.dom;
        },

        onLoad: function () {
            var me = this,
                doc = me.getDoc();

            if (doc) {
                this.el.unmask();
                this.fireEvent('load', this);

            } else if (me.src) {

                this.el.unmask();
                this.fireEvent('error', this);
            }


        },

        load: function (src) {
            var me = this,
                text = me.loadMask,
                frame = me.getFrame();

            if (me.fireEvent('beforeload', me, src) !== false) {
                if (text && me.el) {
                    me.el.mask(text);
                }

                frame.src = me.src = (src || me.src);
            }
        }
    });
}