dlundgren/phrender

<?php

/**
 * @file
 * Contains Phrender\Engine
 */
namespace Phrender;

use Interop\Output\Context as InteropContext;
use Interop\Output\Template;
use Interop\Output\TemplateFactory;

/**
 * The Template rendering engine
 *
 * @package Phrender
 */
class Engine
    implements \Interop\Output\Engine
{
    /**
     * @var InteropContext
     */
    protected $context;

    /**
     * @var TemplateFactory
     */
    protected $factory;

    public function __construct(TemplateFactory $factory = null,InteropContext $context = null)
    {
        $this->context = $context ?: new Context\Collection();
        $this->factory = $factory ?: new Template\Factory();
    }

    /**
     * {@inheritdoc}
     */
    public function context()
    {
        return $this->context;
    }

    /**
     * {@inheritdoc}
     */
    public function useContext(InteropContext $context)
    {
        $this->context = $context;
    }

    /**
     * {@inheritdoc}
     */
    public function templateFactory()
    {
        return $this->factory;
    }

    /**
     * {@inheritdoc}
     */
    public function useTemplateFactory(TemplateFactory $templateFactory)
    {
        $this->factory = $templateFactory;
    }

    /**
     * {@inheritdoc}
     */
    public function render($template, $data)
    {
        if (!($data instanceof InteropContext)) {
            $data = new Context\Any($data);
        }
        $this->context->add($data);

        $output = $this->loadTemplate($template)->render($this->context);

        $this->context->remove($data);

        return $output;
    }

    /**
     * @param $template
     * @return Template Returns the template from the factory
     */
    protected function loadTemplate($template)
    {
        return $this->factory->load($template);
    }

}