gistfile1.txt

    private function getAddToCartPanel() {
        $mainDiv = Ext::create('container');

        $addToCartTextLabel = Ext::create('label');
        $addToCartTextLabel->setText('To Cart:');
        $addToCartTextLabel->setStyle('font-weight:bold; font-size: 16px; padding-left: 5px;');
        $addToCartTextLabel->appendTo($mainDiv);

        $addToCartButtonAndText = Ext::create('fieldcontainer');
        $addToCartButtonAndText->setConfigByIndex('layout', array(
            'type' => 'hbox',
            'pack' => 'end',
        ));
        $addToCartButtonAndText->setStyle('margin-top: 3px');
        $addToCartButtonAndText->appendTo($mainDiv);

        $textField = $this->getFormFactory()->makeTextfield();
        $textField->setId('article_qty');
        $textField->setWidth(90);
        $textField->setPadding(2);
        $textField->setEmptyText('Quantity');
        $textField->appendTo($addToCartButtonAndText);

        $displayField = Ext::create('displayfield');
        $displayField->setConfigByIndex('value', "PCE");
        $displayField->setMargin("0 5");
        $displayField->appendTo($addToCartButtonAndText);

        $addToCartButton = $this->getButtonFactory()->makeButton();

        $articleId = $this->getArticle()->getId();

        $successTitle   = $this->translate('success');
        $successText    = $this->translate('article_added_to_cart');
        $failureTitle   = $this->translate('failure');
        $failureText    = $this->translate('unable_to_add_article_to_cart');

        $btnHandler =<<<js
addToCartBtnHandler = function(){
    var qty = Ext.getCmp('article_qty').getValue();

    var success = function(){
        Ext.Msg.alert('$successTitle', '$successText');
    };

    var failure = function(){
        Ext.Msg.alert('$failureTitle', '$failureText');
    };

    var callback = function(){
        Ext.getCmp('$this->pageId').setLoading(false);
    };

    Ext.getCmp('$this->pageId').setLoading(true);

    addArticleToCart($articleId, qty, {
        success: success,
        failure: failure,
        callback: callback
    });
}
js;

        $addToCartButton->setHandler(Ext::createFn($btnHandler));
        $addToCartButton->setConfigByIndex('icon', '/style/air/images/folder_cart.gif');
        $addToCartButton->appendTo($addToCartButtonAndText);

        return $mainDiv;
    }