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<?php |
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namespace Masterminds\HTML5\Parser; |
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/** |
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* Handles special-case rules for the DOM tree builder. |
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* |
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* Many tags have special rules that need to be accomodated on an |
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* individual basis. This class handles those rules. |
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* |
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* See section 8.1.2.4 of the spec. |
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* |
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* @todo - colgroup and col special behaviors |
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* - body and head special behaviors |
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*/ |
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class TreeBuildingRules |
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{ |
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protected static $tags = array( |
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'li' => 1, |
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'dd' => 1, |
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'dt' => 1, |
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'rt' => 1, |
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'rp' => 1, |
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'tr' => 1, |
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'th' => 1, |
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'td' => 1, |
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'thead' => 1, |
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'tfoot' => 1, |
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'tbody' => 1, |
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'table' => 1, |
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'optgroup' => 1, |
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'option' => 1, |
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); |
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/** |
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* Returns true if the given tagname has special processing rules. |
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*/ |
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103 |
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public function hasRules($tagname) |
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{ |
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return isset(static::$tags[$tagname]); |
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} |
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/** |
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* Evaluate the rule for the current tag name. |
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* |
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* This may modify the existing DOM. |
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* |
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* @return \DOMElement The new Current DOM element. |
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*/ |
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public function evaluate($new, $current) |
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{ |
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switch ($new->tagName) { |
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case 'li': |
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return $this->handleLI($new, $current); |
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case 'dt': |
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4 |
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case 'dd': |
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return $this->handleDT($new, $current); |
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3 |
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case 'rt': |
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case 'rp': |
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return $this->handleRT($new, $current); |
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3 |
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case 'optgroup': |
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return $this->closeIfCurrentMatches($new, $current, array( |
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2 |
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'optgroup', |
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)); |
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case 'option': |
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return $this->closeIfCurrentMatches($new, $current, array( |
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2 |
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'option', |
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2 |
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)); |
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1 |
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case 'tr': |
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return $this->closeIfCurrentMatches($new, $current, array( |
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'tr', |
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)); |
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1 |
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case 'td': |
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1 |
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case 'th': |
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1 |
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return $this->closeIfCurrentMatches($new, $current, array( |
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1 |
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'th', |
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1 |
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'td', |
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1 |
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)); |
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1 |
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case 'tbody': |
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1 |
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case 'thead': |
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1 |
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case 'tfoot': |
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1 |
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case 'table': // Spec isn't explicit about this, but it's necessary. |
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return $this->closeIfCurrentMatches($new, $current, array( |
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1 |
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'thead', |
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1 |
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'tfoot', |
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1 |
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'tbody', |
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1 |
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)); |
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} |
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return $current; |
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} |
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2 |
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protected function handleLI($ele, $current) |
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{ |
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return $this->closeIfCurrentMatches($ele, $current, array( |
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2 |
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'li', |
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2 |
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)); |
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} |
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1 |
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protected function handleDT($ele, $current) |
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{ |
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1 |
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return $this->closeIfCurrentMatches($ele, $current, array( |
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1 |
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'dt', |
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1 |
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'dd', |
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1 |
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)); |
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} |
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protected function handleRT($ele, $current) |
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{ |
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return $this->closeIfCurrentMatches($ele, $current, array( |
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'rt', |
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'rp', |
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)); |
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} |
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protected function closeIfCurrentMatches($ele, $current, $match) |
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{ |
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if (in_array($current->tagName, $match, true)) { |
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$current->parentNode->appendChild($ele); |
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} else { |
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$current->appendChild($ele); |
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} |
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return $ele; |
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} |
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} |
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Masterminds /
html5-php
