source: inc/admin/class.dc.form.php @ 1053:96e69ef76fc9

<?php


class dcFormNode extends Twig_Node {
    public function __construct($name, Twig_NodeInterface $body, $lineno, $tag = null)
    {
        parent::__construct(array('body' => $body), array('name' => $name), $lineno, $tag);
    }

    /**
     * Compiles the node to PHP.
     *
     * @param Twig_Compiler A Twig_Compiler instance
     */
    public function compile(Twig_Compiler $compiler)
    {
        $compiler
            ->addDebugInfo($this)
            ->write("\$context['dc_form']->beginForm('".
                $this->getAttribute('name')."');\n")
            ->subcompile($this->getNode('body'))
            ->write("\$context['dc_form']->renderHiddenWidgets();\n")
            ->write("\$context['dc_form']->endForm();\n")
        ;
    }

}

class dcFormTokenParser extends Twig_TokenParser {

     public function parse(Twig_Token $token) {
        $lineno = $token->getLine();
        $stream = $this->parser->getStream();
        $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
        $stream->expect(Twig_Token::BLOCK_END_TYPE);
        $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
        $stream->expect(Twig_Token::BLOCK_END_TYPE);
        return new dcFormNode ($name, $body, $token->getLine(), $this->getTag());
     }

     public function decideBlockEnd(Twig_Token $token)
    {
        return $token->test('endform');
    }


    public function getTag()
    {
        return 'form';
    }

}

class dcFormExtension extends Twig_Extension {
     protected $template;
     protected $tpl;
     protected $core;
     protected $twig;
     protected $blocks;
     protected $forms;
     protected $currentForm;

     public function __construct($core){
          $this->core = $core;
          $this->tpl = 'form_layout.html.twig';
          $this->forms = array();
          $this->currentForm = null;
     }

    public function initRuntime(Twig_Environment $environment)
    {
     $this->twig = $environment;
          $this->template = $this->twig->loadTemplate($this->tpl);
     $this->blocks = $this->template->getBlocks();
    }

    public function getGlobals() {
     return array('dc_form' => $this);
    }

     public function getFunctions() {
          return array(
               'form_field' => new Twig_Function_Method($this, 'renderWidget', array('is_safe' => array('html'))),
            '_form_is_choice_group'    => new \Twig_Function_Method($this, 'isChoiceGroup', array('is_safe' => array('html'))),
            '_form_is_choice_selected' => new \Twig_Function_Method($this, 'isChoiceSelected', array('is_safe' => array('html')))

          );
     }

     public function isChoiceGroup($choice) {
          return is_array($choice);
     }
     public function isChoiceSelected($choice,$value) {
          return $choice == $value;

     }

     public function getTokenParsers() {
          return array(new dcFormTokenParser());
     }

     public function renderWidget($name,$attributes=array()) {
          $field = $this->currentForm->$name;
          if ($field) {
               echo $this->template->renderBlock(
                    $field->getWidgetBlock(),
                    array_merge($field->getAttributes(),array('attr'=>$attributes)),
                    $this->blocks);
          }
     }

     public function renderHiddenWidgets() {
          foreach ($this->currentForm->getHiddenFields() as $h) {
               $this->renderWidget($h->getName());
          }
     }

     public function getName() {
          return 'dc_form';
     }

     public function addForm(dcForm $form) {
          $this->forms[$form->getName()]=$form;
     }

     public function beginForm($name) {
          if (isset($this->forms[$name])) {
               $this->currentForm = $this->forms[$name];
               $this->currentForm->begin();
          } else {
               throw new Twig_Error_Runtime("Form '".$name."' does not exist");
          }
     }
     public function endForm() {
          $this->currentForm->end();
          $this->currentForm = null;
     }

}

class InvalidFieldException extends Exception {
}


class dcForm {
     protected $name;
     protected $core;
     protected $action;
     protected $fields;
     protected $method;
     protected $submitfields;
     protected $hiddenfields;
     protected $errors;
     
     private function addNonce() {
          $this->addField(new dcFieldHidden(array('xd_check'), $this->core->getNonce()));
     }
     
     public function __construct($core,$name,$action, $method='POST') {
          $this->core = $core;
          $this->name = $name;
          $this->method = $method;
          $this->action = $action;
          $this->fields = array();
          $this->core->page->getExtension('dc_form')->addForm($this);
          $this->submitfields = array();
          $this->hiddenfields = array();
          $this->errors = array();
          if ($method == 'POST') {
               $this->addNonce();
          }
     }

     public function getName() {
          return $this->name;
     }

     public function getErrors() {
          return $this->errors;
     }
     
     public function addField(dcField $f) {
          
          if ($f instanceof dcFieldAction) {
               $this->submitfields[$f->getName()]=$f;
          }
          if ($f instanceof dcFieldHidden) {
               $this->hiddenfields[$f->getName()]=$f;
          }

          $this->fields[$f->getName()]=$f;
          return $this;
     }

     public function begin() {
          echo '<form method="'.$this->method.'" action="'.$this->action.'">';
     }

     public function end() {
          echo '</form>';
     }


    public function __isset($name) {
          return isset($this->fields[$name]);
    }

    public function __get($name) {
          if (isset($this->fields[$name])) {
               return $this->fields[$name];
          } else {
               return null;
          }
    }

    public function __set($name,$value) {
          if (isset($this->fields[$name])) {
               $this->fields[$name]->setAttribute('value',$value);
          }
    }

     public function isSubmitted() {
          $from = ($this->method == 'POST')?$_POST:$_GET;
          echo "form fields :\n";
     }
     
     public function setup() {
          $from = ($this->method=='POST')?$_POST:$_GET;
          foreach ($this->fields as $f) {
               $f->setup($from);
          }
          foreach ($this->submitfields as $f) {
               if ($f->isDefined()) {
                    $ret = call_user_func ($f->getAction(),$this);
                    return;
               }
          }
     }
     
     public function check() {
          foreach ($this->fields as $f) {
               try {
                    $f->check();
               } catch (InvalidFieldException $e) {
                    $this->errors[]=$e->getMessage();
               }
          }
     }
     
     public function getHiddenFields() {
          return $this->hiddenfields;
     }
     
}

abstract class dcField {
     protected $attributes;
     protected $name;
     protected $value;
     protected $id;
     protected $defined;
     
     protected function getNID($nid) {
          if (is_array($nid)) {
               $this->name = $nid[0];
               $this->id = !empty($nid[1]) ? $nid[1] : null;
          } else {
               $this->id = $this->name = $nid;
          }
     }

     public function __construct($name, $value, $attributes = array()) {
          $this->getNID($name);
          $this->attributes = $attributes;
          $this->value = $value;
          $this->attributes['name'] = $this->name;
          $this->attributes['id'] = $this->id;
          $this->attributes['value'] = $this->value;
          $this->defined = false;

     }

     abstract public function getWidgetBlock();

     public function setAttribute ($name,$value) {
          $this->attributes[$name] = $value;
     }

     public function getAttributes() {
          return $this->attributes;

     }

     public function getName(){
          return $this->name;
     }

     public function check() {
          if (!$this->defined && $this->attributes['defined']) {
               throw new InvalidFieldException(sprintf('Field "%s" is mandatory'),$this->attributes['label']);
          }

     }
     
     public function setup($from) {
          if (isset($from[$this->id])) {
               $this->value = $from[$this->id];
               $this->defined = true;
          }
     }
     
     public function isDefined() {
          return $this->defined;
     }
     
}


class dcFieldText extends dcField {

     public function getWidgetBlock() {
          return "field_text";
     }

}

class dcFieldTextArea extends dcField {

     public function getWidgetBlock() {
          return "field_textarea";
     }

}

class dcFieldHidden extends dcField {

     public function getWidgetBlock() {
          return "field_hidden";
     }

}

class dcFieldCheckbox extends dcField {

     public function getWidgetBlock() {
          return "field_checkbox";
     }

}

abstract class dcFieldAction extends dcField {
     protected $action;
     public function __construct($name, $value, $attributes = array()) {
          parent::__construct($name, $value, $attributes);
          if (isset($attributes['action'])) {
               $this->action = $attributes['action'];
          }
     }
     public function getAction() {
          return $this->action;
     }
}

class dcFieldSubmit extends dcFieldAction {

     public function getWidgetBlock() {
          return "field_submit";
     }

}

class dcFieldCombo extends dcField {
     protected $options;

     public function __construct($name, $value, $options, $attributes = array()) {
          $this->options = $options;
          parent::__construct($name,$value,$attributes);
          $this->attributes['options']=$options;
     }

     public function getWidgetBlock() {
          return "field_combo";
     }

}

?>