class App_Plugin_DojoLayer extends Zend_Controller_Plugin_Abstract
{
    public $layerScript = APPLICATION_PATH . '/../public/js/custom/main.js';
    protected $_build;

    public function dispatchLoopShutdown()
    {
        if (!file_exists($this->layerScript)) {
            $this->generateDojoLayer();
        }
    }

    public function getBuild()
    {
        if (null === $this->_build) {
            $this->_build = new Zend_Dojo_BuildLayer(array(
                'view'      => $view,
                'layerName' => 'custom.main',
            ));
        }
        return $this->_build;
    }

    public function generateDojoLayer()
    {
        $build = $this->getBuild();
        $layerContents = $build->generateLayerScript();
        if (!dir_exists(dirname($this->layerScript))) {
            mkdir(dirname($this->layerScript));
        }
        file_put_contents($this->layerScript, $layerContents);
    }
}