| <?php |
| /** |
| * File containing the ezcDocumentXhtmlHeaderElementFilter class |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| * @package Document |
| * @version //autogen// |
| * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0 |
| * @access private |
| */ |
| |
| /** |
| * Filter for XHtml header elements, including grouping all following siblings |
| * on the same header level in a section. |
| * |
| * @package Document |
| * @version //autogen// |
| * @access private |
| */ |
| class ezcDocumentXhtmlHeaderElementFilter extends ezcDocumentXhtmlElementBaseFilter |
| { |
| /** |
| * Filter a single element |
| * |
| * @param DOMElement $element |
| * @return void |
| */ |
| public function filterElement( DOMElement $element ) |
| { |
| // Create new parent node if we found a header and aggregate everything |
| // below the actual header into this node. |
| $section = new ezcDocumentPropertyContainerDomElement( 'div' ); |
| |
| $parent = $element->parentNode; |
| |
| // Replace header with new section node |
| $parent->replaceChild( $section, $element ); |
| $section->setProperty( 'type', 'section' ); |
| $section->setProperty( 'level', $level = $this->getHeaderLevel( $element ) ); |
| |
| $section->appendChild( $element ); |
| $element->setProperty( 'type', 'title' ); |
| |
| // Skip all preceeding child elements, until we reach the current node. |
| $children = $parent->childNodes; |
| $childCount = $children->length; |
| for ( $i = 0; $i < $childCount; ++$i ) |
| { |
| if ( $section->isSameNode( $children->item( $i ) ) ) |
| { |
| break; |
| } |
| } |
| ++$i; |
| |
| while ( ( $node = $children->item( $i ) ) !== null ) |
| { |
| if ( ( $node->nodeType === XML_ELEMENT_NODE ) && |
| ( $node->tagName === 'div' ) && |
| ( $node->getProperty( 'type' ) === 'section' ) && |
| ( $node->getProperty( 'level' ) <= $level ) ) |
| { |
| break; |
| } |
| else |
| { |
| $new = $node->cloneNode( true ); |
| $section->appendChild( $new ); |
| $parent->removeChild( $node ); |
| } |
| } |
| } |
| |
| /** |
| * Get header level |
| * |
| * Get the header level of a HTML heading. Additionally to the default |
| * levels h1-6 we repect a level specified in the class attribute, which is |
| * for example used by the RST to XHtml conversion to specify header levels |
| * higher then 6. |
| * |
| * @param DOMElement $element |
| * @return int |
| */ |
| protected function getHeaderLevel( DOMElement $element ) |
| { |
| $headerLevel = (int) $element->tagName[1]; |
| if ( $headerLevel === 6 ) |
| { |
| if ( $element->hasAttribute( 'class' ) && |
| preg_match( '((?:\s|^)h(?P<level>\d+)(?:\s|$))', $element->getAttribute( 'class' ), $match ) ) |
| { |
| $headerLevel = (int) $match['level']; |
| } |
| } |
| |
| return $headerLevel; |
| } |
| |
| /** |
| * Check if filter handles the current element |
| * |
| * Returns a boolean value, indicating weather this filter can handle |
| * the current element. |
| * |
| * @param DOMElement $element |
| * @return void |
| */ |
| public function handles( DOMElement $element ) |
| { |
| return (bool) preg_match( '(^[hH][1-6]$)', $element->tagName ); |
| } |
| } |
| |
| ?> |