| /* |
| * Copyright 2002,2004 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.jelly.tags.define; |
| |
| import org.apache.commons.jelly.JellyTagException; |
| import org.apache.commons.jelly.TagSupport; |
| import org.apache.commons.jelly.XMLOutput; |
| import org.apache.commons.jelly.impl.DynamicTagLibrary; |
| |
| /** |
| * The <taglib> tag is used to define a new tag library |
| * using a Jelly script. The tag library is identified by its |
| * {@link #getURI() URI}. |
| * |
| * The tags for a taglib are declared using the {@link TagTag}. |
| * |
| * You can 'inherit' tags from a previously defined taglib, as well, |
| * allowing runtime extension of tag libraries |
| * |
| * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> |
| * @version $Revision: 1.6 $ |
| */ |
| public class TaglibTag extends TagSupport { |
| |
| /** The namespace URI */ |
| private String uri; |
| /** The new tags being added */ |
| private DynamicTagLibrary tagLibrary; |
| /** Whether or not inheritence is enabled */ |
| private boolean inherit = true; |
| |
| public TaglibTag() { |
| } |
| |
| public TaglibTag(String uri) { |
| this.uri = uri; |
| } |
| |
| // Tag interface |
| //------------------------------------------------------------------------- |
| public void doTag(XMLOutput output) throws JellyTagException { |
| String uri = getUri(); |
| tagLibrary = new DynamicTagLibrary( uri ); |
| |
| // inherit tags from an existing tag library |
| if ( isInherit() ) { |
| tagLibrary.setParent( context.getTagLibrary( uri ) ); |
| } |
| context.registerTagLibrary( uri, tagLibrary ); |
| |
| invokeBody(output); |
| |
| tagLibrary = null; |
| } |
| |
| // Properties |
| //------------------------------------------------------------------------- |
| public String getUri() { |
| return uri; |
| } |
| |
| /** |
| * Sets the namespace URI to register this new dynamic tag library with |
| */ |
| public void setUri(String uri) { |
| this.uri = uri; |
| } |
| |
| public DynamicTagLibrary getTagLibrary() { |
| return tagLibrary; |
| } |
| |
| /** |
| * Returns the inherit. |
| * @return boolean |
| */ |
| public boolean isInherit() { |
| return inherit; |
| } |
| |
| /** |
| * Sets whether this dynamic tag should inherit from the current existing tag library |
| * of the same URI. This feature is enabled by default so that tags can easily be |
| * some tags can be overridden in an existing library, such as when making Mock Tags. |
| * |
| * You can disable this option if you want to disable any tags in the base library, |
| * turning them into just normal static XML. |
| * |
| * @param inherit The inherit to set |
| */ |
| public void setInherit(boolean inherit) { |
| this.inherit = inherit; |
| } |
| |
| } |