<?php
namespace Makarovsoft\Email\Block\Adminhtml\Message;

use Magento\Backend\Block\Widget\Form\Container as FormContainer;
use Magento\Backend\Block\Widget\Context;
use Magento\Framework\Registry;

class Edit extends FormContainer
{
    /**
     * Core registry
     *
     * @var \Magento\Framework\Registry
     */
    protected $coreRegistry = null;

    /**
     * constructor
     *
     * @param Context $context
     * @param Registry $registry
     * @param array $data
     */
    public function __construct(
        Context $context,
        Registry $registry,
        array $data = []
    )
    {
        $this->coreRegistry = $registry;
        parent::__construct($context, $data);
    }

    /**
     * Initialize message edit block
     *
     * @return void
     */
    protected function _construct()
    {
        $this->_objectId = 'message_id';
        $this->_blockGroup = 'Makarovsoft_Email';
        $this->_controller = 'adminhtml_message';
        parent::_construct();

        /** @var \Makarovsoft\Email\Model\Message $message */
        $message = $this->coreRegistry->registry('makarovsoft_email_message');
        if ($message->getId()) {
            $this->buttonList->remove('save');
        } else {
            $this->buttonList->update('save', 'label', __('Send Message'));
        }

    }

    /**
     * Retrieve text for header element depending on loaded message
     *
     * @return string
     */
    public function getHeaderText()
    {
        /** @var \Makarovsoft\Email\Model\Message $message */
        $message = $this->coreRegistry->registry('makarovsoft_email_message');
        if ($message->getId()) {
            return __("Edit Message '%1'", $this->escapeHtml($message->getName()));
        }
        return __('New Message');
    }

    /**
     * Prepare layout
     *
     * @return \Magento\Framework\View\Element\AbstractBlock
     */
    protected function _prepareLayout()
    {
        $this->_formScripts[] = "
            function toggleEditor() {
                if (tinyMCE.getInstanceById('message_content') == null) {
                    tinyMCE.execCommand('mceAddControl', false, 'message_content');
                } else {
                    tinyMCE.execCommand('mceRemoveControl', false, 'message_content');
                }
            };
        ";
        return parent::_prepareLayout();
    }
}