Allowing Users To Invoke Methods Before A Component Is Rendered in ExtJS

gistfile1.js

/**
 * Allowing Users To Invoke Methods Before A Component Is Rendered
 *
 * @see http://www.sencha.com/blog/2010/08/27/tips-and-tricks-for-ext-js-component-developers/
 */

someMethod: function() {
    if (!this.rendered) {
        this.on('render', this.someMethod, this, {single: true});
        return;
    }
    // typical processing  
}