silverstripe-framework/View/ViewableData_Debugger.php

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<?php
namespace SilverStripe\View;
use ReflectionObject;
/**
* Allows you to render debug information about a {@link ViewableData} object into a template.
*/
class ViewableData_Debugger extends ViewableData
{
/**
* @var ViewableData
*/
protected $object;
/**
* @param ViewableData $object
*/
public function __construct(ViewableData $object)
{
$this->object = $object;
parent::__construct();
}
/**
* @return string The rendered debugger
*/
public function __toString()
{
return (string)$this->forTemplate();
}
/**
* Return debugging information, as XHTML. If a field name is passed, it will show debugging information on that
* field, otherwise it will show information on all methods and fields.
*
* @param string $field the field name
* @return string
*/
public function forTemplate($field = null)
{
// debugging info for a specific field
if ($field) {
return "<b>Debugging Information for {$this->class}->{$field}</b><br/>" .
($this->object->hasMethod($field) ? "Has method '$field'<br/>" : null) .
($this->object->hasField($field) ? "Has field '$field'<br/>" : null);
}
// debugging information for the entire class
$reflector = new ReflectionObject($this->object);
$debug = "<b>Debugging Information: all methods available in '{$this->object->class}'</b><br/><ul>";
foreach ($this->object->allMethodNames() as $method) {
// check that the method is public
if ($method[0] === strtoupper($method[0]) && $method[0] != '_') {
if ($reflector->hasMethod($method) && $method = $reflector->getMethod($method)) {
if ($method->isPublic()) {
$debug .= "<li>\${$method->getName()}";
if (count($method->getParameters())) {
$debug .= ' <small>(' . implode(', ', $method->getParameters()) . ')</small>';
}
$debug .= '</li>';
}
} else {
$debug .= "<li>\$$method</li>";
}
}
}
$debug .= '</ul>';
if ($this->object->hasMethod('toMap')) {
$debug .= "<b>Debugging Information: all fields available in '{$this->object->class}'</b><br/><ul>";
foreach ($this->object->toMap() as $field => $value) {
$debug .= "<li>\$$field</li>";
}
$debug .= "</ul>";
}
// check for an extra attached data
if ($this->object->hasMethod('data') && $this->object->data() != $this->object) {
$debug .= ViewableData_Debugger::create($this->object->data())->forTemplate();
}
return $debug;
}
}