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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    */
shouldStripWhiteSpace( XPathContext support, Element targetElement)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    */
canStripWhiteSpace()53   public boolean canStripWhiteSpace();
54 }
55