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org.apache.commons.jelly.tags.define.TaglibTag	86%	100%

1		/*
2		* Copyright 2002,2004 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		package org.apache.commons.jelly.tags.define;
17
18		import org.apache.commons.jelly.JellyTagException;
19		import org.apache.commons.jelly.TagSupport;
20		import org.apache.commons.jelly.XMLOutput;
21		import org.apache.commons.jelly.impl.DynamicTagLibrary;
22
23		/**
24		* The <taglib> tag is used to define a new tag library
25		* using a Jelly script. The tag library is identified by its
26		* {@link #getURI() URI}.
27		*
28		* The tags for a taglib are declared using the {@link TagTag}.
29		*
30		* You can 'inherit' tags from a previously defined taglib, as well,
31		* allowing runtime extension of tag libraries
32		*
33		* @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
34		* @version $Revision: 155420 $
35		*/
36		public class TaglibTag extends TagSupport {
37
38		/** The namespace URI */
39		private String uri;
40		/** The new tags being added */
41		private DynamicTagLibrary tagLibrary;
42		/** Whether or not inheritence is enabled */
43	36	private boolean inherit = true;
44
45	36	public TaglibTag() {
46	36	}
47
48	0	public TaglibTag(String uri) {
49	0	this.uri = uri;
50	0	}
51
52		// Tag interface
53		//-------------------------------------------------------------------------
54		public void doTag(XMLOutput output) throws JellyTagException {
55	36	String uri = getUri();
56	36	tagLibrary = new DynamicTagLibrary( uri );
57
58		// inherit tags from an existing tag library
59	36	if ( isInherit() ) {
60	27	tagLibrary.setParent( context.getTagLibrary( uri ) );
61		}
62	36	context.registerTagLibrary( uri, tagLibrary );
63
64	36	invokeBody(output);
65
66	36	tagLibrary = null;
67	36	}
68
69		// Properties
70		//-------------------------------------------------------------------------
71		public String getUri() {
72	36	return uri;
73		}
74
75		/**
76		* Sets the namespace URI to register this new dynamic tag library with
77		*/
78		public void setUri(String uri) {
79	36	this.uri = uri;
80	36	}
81
82		public DynamicTagLibrary getTagLibrary() {
83	36	return tagLibrary;
84		}
85
86		/**
87		* Returns the inherit.
88		* @return boolean
89		*/
90		public boolean isInherit() {
91	36	return inherit;
92		}
93
94		/**
95		* Sets whether this dynamic tag should inherit from the current existing tag library
96		* of the same URI. This feature is enabled by default so that tags can easily be
97		* some tags can be overridden in an existing library, such as when making Mock Tags.
98		*
99		* You can disable this option if you want to disable any tags in the base library,
100		* turning them into just normal static XML.
101		*
102		* @param inherit The inherit to set
103		*/
104		public void setInherit(boolean inherit) {
105	21	this.inherit = inherit;
106	21	}
107
108		}

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