/**
* adminhtml_block_html_before
*
* @param Varien_Event_Observer $observer
*
* @return null
*/
public function alterTextareaBlockTemplate(Varien_Event_Observer $observer)
{
$this->_helper = Mage::helper('markdown');
if ($this->_helper->isDisabled() || $this->_helper->isParserOnly()) {
return NULL;
}
/** @var $block Mage_Adminhtml_Block_Template */
$block = $observer->getEvent()->getBlock();
$isWidgetElement = $block instanceof Mage_Adminhtml_Block_Widget_Form_Renderer_Fieldset_Element;
$isCatalogElement = $block instanceof Mage_Adminhtml_Block_Catalog_Form_Renderer_Fieldset_Element;
/**
* main reason for this layout handle thing is to avoid loading of lot of unused JS/CSS ...
*/
$isLayoutHandleAllowed = Mage::getSingleton('markdown/observer_adminhtml_layoutUpdate')->isAllowed();
if ($isWidgetElement || $isCatalogElement) {
/** @var Varien_Data_Form_Element_Abstract _currentElement */
$this->_currentElement = $block->getElement();
$_isElementEditor = $this->_isElementEditor();
$_isCatalogElementAllowed = $this->_isCatalogElementAllowed();
$_isEmailTemplateElementAllowed = $this->_isEmailTemplateElementAllowed();
if ($_isElementEditor || $_isCatalogElementAllowed || $_isEmailTemplateElementAllowed) {
$this->_tryToGetPreviewUrl($block);
$method = $isLayoutHandleAllowed ? '_integrate' : '_addMarkdownHint';
$this->{$method}();
}
}
}
