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<?php
2 
 
3 
/**
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 * XHTML 1.1 Forms module, defines all form-related elements found in HTML 4.
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 */
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class HTMLPurifier_HTMLModule_Forms extends HTMLPurifier_HTMLModule
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{
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    /**
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     * @type string
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     */
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    public $name = 'Forms';
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    /**
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     * @type bool
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     */
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    public $safe = false;
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    /**
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     * @type array
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     */
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    public $content_sets = array(
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        'Block' => 'Form',
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        'Inline' => 'Formctrl',
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    );
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    /**
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     * @param HTMLPurifier_Config $config
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     */
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    public function setup($config)
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    {
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        if ($config->get('HTML.Forms')) {
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            $this->safe = true;
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        }
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        $form = $this->addElement(
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            'form',
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            'Form',
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            'Required: Heading | List | Block | fieldset',
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            'Common',
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            array(
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                'accept' => 'ContentTypes',
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                'accept-charset' => 'Charsets',
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                'action*' => 'URI',
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                'method' => 'Enum#get,post',
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                // really ContentType, but these two are the only ones used today
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                'enctype' => 'Enum#application/x-www-form-urlencoded,multipart/form-data',
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            )
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        );
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        $form->excludes = array('form' => true);
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        $input = $this->addElement(
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            'input',
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            'Formctrl',
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            'Empty',
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            'Common',
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            array(
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                'accept' => 'ContentTypes',
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                'accesskey' => 'Character',
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                'alt' => 'Text',
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                'checked' => 'Bool#checked',
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                'disabled' => 'Bool#disabled',
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                'maxlength' => 'Number',
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                'name' => 'CDATA',
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                'readonly' => 'Bool#readonly',
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                'size' => 'Number',
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                'src' => 'URI#embedded',
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                'tabindex' => 'Number',
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                'type' => 'Enum#text,password,checkbox,button,radio,submit,reset,file,hidden,image',
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                'value' => 'CDATA',
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            )
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        );
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        $input->attr_transform_post[] = new HTMLPurifier_AttrTransform_Input();
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        $this->addElement(
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            'select',
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            'Formctrl',
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            'Required: optgroup | option',
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            'Common',
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            array(
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                'disabled' => 'Bool#disabled',
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                'multiple' => 'Bool#multiple',
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                'name' => 'CDATA',
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                'size' => 'Number',
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                'tabindex' => 'Number',
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            )
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        );
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        $this->addElement(
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            'option',
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            false,
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            'Optional: #PCDATA',
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            'Common',
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            array(
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                'disabled' => 'Bool#disabled',
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                'label' => 'Text',
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                'selected' => 'Bool#selected',
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                'value' => 'CDATA',
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            )
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        );
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        // It's illegal for there to be more than one selected, but not
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        // be multiple. Also, no selected means undefined behavior. This might
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        // be difficult to implement; perhaps an injector, or a context variable.
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        $textarea = $this->addElement(
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            'textarea',
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            'Formctrl',
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            'Optional: #PCDATA',
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            'Common',
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            array(
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                'accesskey' => 'Character',
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                'cols*' => 'Number',
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                'disabled' => 'Bool#disabled',
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                'name' => 'CDATA',
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                'readonly' => 'Bool#readonly',
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                'rows*' => 'Number',
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                'tabindex' => 'Number',
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            )
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        );
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        $textarea->attr_transform_pre[] = new HTMLPurifier_AttrTransform_Textarea();
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        $button = $this->addElement(
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            'button',
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            'Formctrl',
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            'Optional: #PCDATA | Heading | List | Block | Inline',
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            'Common',
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            array(
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                'accesskey' => 'Character',
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                'disabled' => 'Bool#disabled',
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                'name' => 'CDATA',
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                'tabindex' => 'Number',
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                'type' => 'Enum#button,submit,reset',
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                'value' => 'CDATA',
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            )
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        );
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        // For exclusions, ideally we'd specify content sets, not literal elements
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        $button->excludes = $this->makeLookup(
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            'form',
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            'fieldset', // Form
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            'input',
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            'select',
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            'textarea',
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            'label',
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            'button', // Formctrl
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            'a', // as per HTML 4.01 spec, this is omitted by modularization
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            'isindex',
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            'iframe' // legacy items
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        );
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        // Extra exclusion: img usemap="" is not permitted within this element.
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        // We'll omit this for now, since we don't have any good way of
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        // indicating it yet.
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        // This is HIGHLY user-unfriendly; we need a custom child-def for this
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        $this->addElement('fieldset', 'Form', 'Custom: (#WS?,legend,(Flow|#PCDATA)*)', 'Common');
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        $label = $this->addElement(
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            'label',
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            'Formctrl',
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            'Optional: #PCDATA | Inline',
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            'Common',
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            array(
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                'accesskey' => 'Character',
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                // 'for' => 'IDREF', // IDREF not implemented, cannot allow
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            )
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        );
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        $label->excludes = array('label' => true);
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        $this->addElement(
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            'legend',
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            false,
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            'Optional: #PCDATA | Inline',
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            'Common',
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            array(
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                'accesskey' => 'Character',
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            )
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        );
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        $this->addElement(
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            'optgroup',
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            false,
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            'Required: option',
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            'Common',
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            array(
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                'disabled' => 'Bool#disabled',
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                'label*' => 'Text',
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            )
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        );
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        // Don't forget an injector for <isindex>. This one's a little complex
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        // because it maps to multiple elements.
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    }
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}
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// vim: et sw=4 sts=4