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efrain |
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<?php
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/**
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* Definition for list containers ul and ol.
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*
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* What does this do? The big thing is to handle ol/ul at the top
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* level of list nodes, which should be handled specially by /folding/
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* them into the previous list node. We generally shouldn't ever
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* see other disallowed elements, because the autoclose behavior
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* in MakeWellFormed handles it.
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*/
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class HTMLPurifier_ChildDef_List extends HTMLPurifier_ChildDef
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{
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/**
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* @type string
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*/
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public $type = 'list';
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/**
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* @type array
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*/
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// lying a little bit, so that we can handle ul and ol ourselves
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// XXX: This whole business with 'wrap' is all a bit unsatisfactory
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public $elements = array('li' => true, 'ul' => true, 'ol' => true);
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public $whitespace;
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/**
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* @param array $children
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* @param HTMLPurifier_Config $config
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* @param HTMLPurifier_Context $context
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* @return array
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*/
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public function validateChildren($children, $config, $context)
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{
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// Flag for subclasses
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$this->whitespace = false;
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// if there are no tokens, delete parent node
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if (empty($children)) {
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return false;
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}
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// if li is not allowed, delete parent node
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if (!isset($config->getHTMLDefinition()->info['li'])) {
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trigger_error("Cannot allow ul/ol without allowing li", E_USER_WARNING);
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return false;
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}
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// the new set of children
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$result = array();
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// a little sanity check to make sure it's not ALL whitespace
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$all_whitespace = true;
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$current_li = null;
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foreach ($children as $node) {
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if (!empty($node->is_whitespace)) {
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$result[] = $node;
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continue;
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}
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$all_whitespace = false; // phew, we're not talking about whitespace
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if ($node->name === 'li') {
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// good
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$current_li = $node;
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$result[] = $node;
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} else {
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// we want to tuck this into the previous li
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// Invariant: we expect the node to be ol/ul
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// ToDo: Make this more robust in the case of not ol/ul
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// by distinguishing between existing li and li created
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// to handle non-list elements; non-list elements should
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// not be appended to an existing li; only li created
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// for non-list. This distinction is not currently made.
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if ($current_li === null) {
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$current_li = new HTMLPurifier_Node_Element('li');
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$result[] = $current_li;
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}
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$current_li->children[] = $node;
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$current_li->empty = false; // XXX fascinating! Check for this error elsewhere ToDo
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}
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}
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if (empty($result)) {
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return false;
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}
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if ($all_whitespace) {
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return false;
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}
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return $result;
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}
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}
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// vim: et sw=4 sts=4
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