| <?php |
| /** |
| * File containing the ezcDocumentOdtStyleFilter 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 mechanism based on ODT style information. |
| * |
| * This filter consists of filte rules, which inference semantics for ODT |
| * elements based on their attached style information. |
| * |
| * @package Document |
| * @version //autogen// |
| * @access private |
| */ |
| class ezcDocumentOdtStyleFilter extends ezcDocumentOdtBaseFilter |
| { |
| /** |
| * Style filter rules. |
| * |
| * @var array(ezcDocumentOdtStyleFilterRule) |
| */ |
| protected $rules = array(); |
| |
| /** |
| * Style inferencer. |
| * |
| * @var ezcDocumentOdtStyleInferencer |
| */ |
| protected $styleInferencer; |
| |
| /** |
| * Creates a new style filter. |
| * |
| * @todo Make configurable. |
| */ |
| public function __construct() |
| { |
| $this->rules = array( |
| new ezcDocumentOdtEmphasisStyleFilterRule(), |
| new ezcDocumentOdtListLevelStyleFilterRule(), |
| ); |
| } |
| |
| /** |
| * Filter ODT document. |
| * |
| * Filter for the document, which may modify / restructure a document and |
| * assign semantic information bits to the elements in the tree. |
| * |
| * @param DOMDocument $dom |
| * @return DOMDocument |
| */ |
| public function filter( DOMDocument $dom ) |
| { |
| $this->styleInferencer = new ezcDocumentOdtStyleInferencer( $dom ); |
| $xpath = new DOMXPath( $dom ); |
| $xpath->registerNamespace( 'office', ezcDocumentOdt::NS_ODT_OFFICE ); |
| $root = $xpath->query( '//office:body' )->item( 0 ); |
| $this->filterNode( $root ); |
| } |
| |
| /** |
| * Filter node |
| * |
| * Depending on the element name, it parents and maybe element attributes |
| * semantic information is assigned to nodes. |
| * |
| * @param DOMElement $element |
| * @return void |
| */ |
| protected function filterNode( DOMElement $element ) |
| { |
| $style = null; |
| foreach ( $this->rules as $rule ) |
| { |
| if ( $rule->handles( $element ) ) |
| { |
| $rule->filter( $element, $this->styleInferencer ); |
| } |
| } |
| |
| foreach ( $element->childNodes as $child ) |
| { |
| if ( $child->nodeType === XML_ELEMENT_NODE ) |
| { |
| $this->filterNode( $child ); |
| } |
| } |
| } |
| } |
| |
| ?> |