| 1: | <?php |
| 2: | |
| 3: | /** |
| 4: | * Definition for list containers ul and ol. |
| 5: | * |
| 6: | * What does this do? The big thing is to handle ol/ul at the top |
| 7: | * level of list nodes, which should be handled specially by /folding/ |
| 8: | * them into the previous list node. We generally shouldn't ever |
| 9: | * see other disallowed elements, because the autoclose behavior |
| 10: | * in MakeWellFormed handles it. |
| 11: | */ |
| 12: | class HTMLPurifier_ChildDef_List extends HTMLPurifier_ChildDef |
| 13: | { |
| 14: | /** |
| 15: | * @type string |
| 16: | */ |
| 17: | public $type = 'list'; |
| 18: | /** |
| 19: | * @type array |
| 20: | */ |
| 21: | // lying a little bit, so that we can handle ul and ol ourselves |
| 22: | // XXX: This whole business with 'wrap' is all a bit unsatisfactory |
| 23: | public $elements = array('li' => true, 'ul' => true, 'ol' => true); |
| 24: | |
| 25: | public $whitespace; |
| 26: | |
| 27: | /** |
| 28: | * @param array $children |
| 29: | * @param HTMLPurifier_Config $config |
| 30: | * @param HTMLPurifier_Context $context |
| 31: | * @return array |
| 32: | */ |
| 33: | public function validateChildren($children, $config, $context) |
| 34: | { |
| 35: | // Flag for subclasses |
| 36: | $this->whitespace = false; |
| 37: | |
| 38: | // if there are no tokens, delete parent node |
| 39: | if (empty($children)) { |
| 40: | return false; |
| 41: | } |
| 42: | |
| 43: | // if li is not allowed, delete parent node |
| 44: | if (!isset($config->getHTMLDefinition()->info['li'])) { |
| 45: | trigger_error("Cannot allow ul/ol without allowing li", E_USER_WARNING); |
| 46: | return false; |
| 47: | } |
| 48: | |
| 49: | // the new set of children |
| 50: | $result = array(); |
| 51: | |
| 52: | // a little sanity check to make sure it's not ALL whitespace |
| 53: | $all_whitespace = true; |
| 54: | |
| 55: | $current_li = null; |
| 56: | |
| 57: | foreach ($children as $node) { |
| 58: | if (!empty($node->is_whitespace)) { |
| 59: | $result[] = $node; |
| 60: | continue; |
| 61: | } |
| 62: | $all_whitespace = false; // phew, we're not talking about whitespace |
| 63: | |
| 64: | if ($node->name === 'li') { |
| 65: | // good |
| 66: | $current_li = $node; |
| 67: | $result[] = $node; |
| 68: | } else { |
| 69: | // we want to tuck this into the previous li |
| 70: | // Invariant: we expect the node to be ol/ul |
| 71: | // ToDo: Make this more robust in the case of not ol/ul |
| 72: | // by distinguishing between existing li and li created |
| 73: | // to handle non-list elements; non-list elements should |
| 74: | // not be appended to an existing li; only li created |
| 75: | // for non-list. This distinction is not currently made. |
| 76: | if ($current_li === null) { |
| 77: | $current_li = new HTMLPurifier_Node_Element('li'); |
| 78: | $result[] = $current_li; |
| 79: | } |
| 80: | $current_li->children[] = $node; |
| 81: | $current_li->empty = false; // XXX fascinating! Check for this error elsewhere ToDo |
| 82: | } |
| 83: | } |
| 84: | if (empty($result)) { |
| 85: | return false; |
| 86: | } |
| 87: | if ($all_whitespace) { |
| 88: | return false; |
| 89: | } |
| 90: | return $result; |
| 91: | } |
| 92: | } |
| 93: | |
| 94: | // vim: et sw=4 sts=4 |
| 95: |