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 */
21package org.apache.xpath;
22
23import javax.xml.transform.TransformerException;
24
25import 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 */
31public 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