Volatile.php

<?php
namespace saasty\View;
/**
 * A very basic view which may contain other elements that are likely to throw exception during render. In which case,
 * the exception will be contained within the view and won't break any of the other UI.
 */
class Volatile extends \atk4\ui\View
{
    public $fx = null;
    function set($cb = null, $arg2 = null) {
        $this->fx = $cb;
        return $this;
    }
    function recursiveRender() {
        try {
            parent::recursiveRender();
        } catch(\Throwable $e) {
            //$this->output('ouch');
            //$v = $this->add(['Message', 'We have a problem', 'error']);
            if ($e instanceof \atk4\core\Exception) {
                $msg = $e->getMessage();
                $content = $e->getHTML();
            } elseif ($e instanceof \Error) {
                $msg = get_class($e).': '.$e->getMessage().' (in '.$e->getFile().':'.$e->getLine().')';
                $content = nl2br($e->getTraceAsString());
            } else {
                $msg = get_class($e).': '.$e->getMessage();
                $content =  null;
            }
            if ($this->fx) {
                $v = $this->add('View');
                call_user_func($this->fx, $v, $msg, $content);
                $this->template->appendHTML('Content', $v->getHTML());
                $this->app->html->template->appendHTML('HEAD', $v->getJS());
            } else {
                $this->template->appendHTML('Content', $content);
            }
        }
    }
}