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      1 /*
      2  * Licensed to the Apache Software Foundation (ASF) under one
      3  * or more contributor license agreements. See the NOTICE file
      4  * distributed with this work for additional information
      5  * regarding copyright ownership. The ASF licenses this file
      6  * to you under the Apache License, Version 2.0 (the  "License");
      7  * you may not use this file except in compliance with the License.
      8  * You may obtain a copy of the License at
      9  *
     10  *     http://www.apache.org/licenses/LICENSE-2.0
     11  *
     12  * Unless required by applicable law or agreed to in writing, software
     13  * distributed under the License is distributed on an "AS IS" BASIS,
     14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     15  * See the License for the specific language governing permissions and
     16  * limitations under the License.
     17  */
     18 /*
     19  * $Id: WhitespaceStrippingElementMatcher.java 468655 2006-10-28 07:12:06Z minchau $
     20  */
     21 package org.apache.xpath;
     22 
     23 import javax.xml.transform.TransformerException;
     24 
     25 import org.w3c.dom.Element;
     26 
     27 /**
     28  * A class that implements this interface can tell if a given element should
     29  * strip whitespace nodes from it's children.
     30  */
     31 public interface WhitespaceStrippingElementMatcher
     32 {
     33   /**
     34    * Get information about whether or not an element should strip whitespace.
     35    * @see <a href="http://www.w3.org/TR/xslt#strip">strip in XSLT Specification</a>
     36    *
     37    * @param support The XPath runtime state.
     38    * @param targetElement Element to check
     39    *
     40    * @return true if the whitespace should be stripped.
     41    *
     42    * @throws TransformerException
     43    */
     44   public boolean shouldStripWhiteSpace(
     45           XPathContext support, Element targetElement) throws TransformerException;
     46 
     47   /**
     48    * Get information about whether or not whitespace can be stripped.
     49    * @see <a href="http://www.w3.org/TR/xslt#strip">strip in XSLT Specification</a>
     50    *
     51    * @return true if the whitespace can be stripped.
     52    */
     53   public boolean canStripWhiteSpace();
     54 }
     55