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1   /*
2   * Copyright 2004 The Apache Software Foundation
3   *
4   * Licensed under the Apache License, Version 2.0 (the "License");
5   * you may not use this file except in compliance with the License.
6   * You may obtain a copy of the License at
7   *
8   *     http://www.apache.org/licenses/LICENSE-2.0
9   *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16  
17  
18  package jsp2.examples.simpletag;
19  
20  import javax.servlet.jsp.JspException;
21  import javax.servlet.jsp.JspWriter;
22  import javax.servlet.jsp.tagext.SimpleTagSupport;
23  import javax.servlet.jsp.tagext.DynamicAttributes;
24  import java.util.ArrayList;
25  import java.util.Iterator;
26  import java.io.IOException;
27  
28  /**
29   * SimpleTag handler that echoes all its attributes 
30   */
31  public class EchoAttributesTag 
32      extends SimpleTagSupport
33      implements DynamicAttributes
34  {
35      private ArrayList keys = new ArrayList();
36      private ArrayList values = new ArrayList();
37  
38      public void doTag() throws JspException, IOException {
39  	JspWriter out = getJspContext().getOut();
40  	for( int i = 0; i < keys.size(); i++ ) {
41  	    String key = (String)keys.get( i );
42  	    Object value = values.get( i );
43  	    out.println( "<li>" + key + " = " + value + "</li>" );
44          }
45      }
46  
47      public void setDynamicAttribute( String uri, String localName, 
48  	Object value ) 
49  	throws JspException
50      {
51  	keys.add( localName );
52  	values.add( value );
53      }
54  }