<?php

/**
 * XHTML 1.1 Legacy module defines elements that were previously 
 * deprecated.
 * 
 * @note Not all legacy elements have been implemented yet, which
 *       is a bit of a reverse problem as compared to browsers! In
 *       addition, this legacy module may implement a bit more than
 *       mandated by XHTML 1.1.
 * 
 * This module can be used in combination with TransformToStrict in order
 * to transform as many deprecated elements as possible, but retain
 * questionably deprecated elements that do not have good alternatives
 * as well as transform elements that don't have an implementation.
 * See docs/ref-strictness.txt for more details.
 */

class HTMLPurifier_HTMLModule_Legacy extends HTMLPurifier_HTMLModule
{
    
    public $name = 'Legacy';
    
    public function __construct() {
        
        $this->addElement('basefont', 'Inline', 'Empty', false, array(
            'color' => 'Color',
            'face' => 'Text', // extremely broad, we should
            'size' => 'Text', // tighten it
            'id' => 'ID'
        ));
        $this->addElement('center', 'Block', 'Flow', 'Common');
        $this->addElement('dir', 'Block', 'Required: li', 'Common', array(
            'compact' => 'Bool#compact'
        ));
        $this->addElement('font', 'Inline', 'Inline', array('Core', 'I18N'), array(
            'color' => 'Color',
            'face' => 'Text', // extremely broad, we should
            'size' => 'Text', // tighten it
        ));
        $this->addElement('menu', 'Block', 'Required: li', 'Common', array(
            'compact' => 'Bool#compact'
        ));
        $this->addElement('s', 'Inline', 'Inline', 'Common');
        $this->addElement('strike', 'Inline', 'Inline', 'Common');
        $this->addElement('u', 'Inline', 'Inline', 'Common');
        
        // setup modifications to old elements
        
        $align = 'Enum#left,right,center,justify';
        
        $address =& $this->addBlankElement('address');
        $address->content_model = 'Inline | #PCDATA | p';
        $address->content_model_type = 'optional';
        $address->child = false;
        
        $blockquote =& $this->addBlankElement('blockquote');
        $blockquote->content_model = 'Flow | #PCDATA';
        $blockquote->content_model_type = 'optional';
        $blockquote->child = false;
        
        $br =& $this->addBlankElement('br');
        $br->attr['clear'] = 'Enum#left,all,right,none';
        
        $caption =& $this->addBlankElement('caption');
        $caption->attr['align'] = 'Enum#top,bottom,left,right';
        
        $div =& $this->addBlankElement('div');
        $div->attr['align'] = $align;
        
        $dl =& $this->addBlankElement('dl');
        $dl->attr['compact'] = 'Bool#compact';
        
        for ($i = 1; $i <= 6; $i++) {
            $h =& $this->addBlankElement("h$i");
            $h->attr['align'] = $align;
        }
        
        $hr =& $this->addBlankElement('hr');
        $hr->attr['align'] = $align;
        $hr->attr['noshade'] = 'Bool#noshade';
        $hr->attr['size'] = 'Pixels';
        $hr->attr['width'] = 'Length';
        
        $img =& $this->addBlankElement('img');
        $img->attr['align'] = 'Enum#top,middle,bottom,left,right';
        $img->attr['border'] = 'Pixels';
        $img->attr['hspace'] = 'Pixels';
        $img->attr['vspace'] = 'Pixels';
        
        // figure out this integer business
        
        $li =& $this->addBlankElement('li');
        $li->attr['value'] = new HTMLPurifier_AttrDef_Integer();
        $li->attr['type']  = 'Enum#s:1,i,I,a,A,disc,square,circle';
        
        $ol =& $this->addBlankElement('ol');
        $ol->attr['compact'] = 'Bool#compact';
        $ol->attr['start'] = new HTMLPurifier_AttrDef_Integer();
        $ol->attr['type'] = 'Enum#s:1,i,I,a,A';
        
        $p =& $this->addBlankElement('p');
        $p->attr['align'] = $align;
        
        $pre =& $this->addBlankElement('pre');
        $pre->attr['width'] = 'Number';
        
        // script omitted
        
        $table =& $this->addBlankElement('table');
        $table->attr['align'] = 'Enum#left,center,right';
        $table->attr['bgcolor'] = 'Color';
        
        $tr =& $this->addBlankElement('tr');
        $tr->attr['bgcolor'] = 'Color';
        
        $th =& $this->addBlankElement('th');
        $th->attr['bgcolor'] = 'Color';
        $th->attr['height'] = 'Length';
        $th->attr['nowrap'] = 'Bool#nowrap';
        $th->attr['width'] = 'Length';
        
        $td =& $this->addBlankElement('td');
        $td->attr['bgcolor'] = 'Color';
        $td->attr['height'] = 'Length';
        $td->attr['nowrap'] = 'Bool#nowrap';
        $td->attr['width'] = 'Length';
        
        $ul =& $this->addBlankElement('ul');
        $ul->attr['compact'] = 'Bool#compact';
        $ul->attr['type'] = 'Enum#square,disc,circle';
        
    }
    
}