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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
ListenerBinding.java | - | 95% | 75% | 91.7% |
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// Copyright 2004, 2005 The Apache Software Foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package org.apache.tapestry.binding;
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import org.apache.bsf.BSFException;
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import org.apache.bsf.BSFManager;
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import org.apache.hivemind.ApplicationRuntimeException;
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import org.apache.hivemind.Location;
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import org.apache.hivemind.util.Defense;
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import org.apache.tapestry.IActionListener;
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import org.apache.tapestry.IComponent;
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import org.apache.tapestry.IEngine;
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import org.apache.tapestry.IPage;
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import org.apache.tapestry.IRequestCycle;
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import org.apache.tapestry.Tapestry;
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import org.apache.tapestry.coerce.ValueConverter;
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import org.apache.tapestry.services.BSFManagerFactory;
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/**
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* A very specialized binding that can be used as an {@link org.apache.tapestry.IActionListener},
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* executing a script in a scripting language, via <a href="http://jakarta.apache.org/bsf">Bean
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* Scripting Framework </a>.
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*
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* @author Howard Lewis Ship
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* @since 3.0
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*/
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public class ListenerBinding extends AbstractBinding implements IActionListener |
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{ |
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private final String _language;
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private final String _script;
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private final IComponent _component;
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/** @since 4.0 */
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private BSFManagerFactory _managerFactory;
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public ListenerBinding(String description, ValueConverter valueConverter, Location location,
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IComponent component, String language, String script, |
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BSFManagerFactory managerFactory) |
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{ |
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super(description, valueConverter, location);
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Defense.notNull(component, "component");
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Defense.notNull(language, "language");
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Defense.notNull(script, "script");
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_component = component; |
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_language = language; |
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_script = script; |
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_managerFactory = managerFactory; |
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} |
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/**
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* Returns this.
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*/
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public Object getObject()
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{ |
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return this; |
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} |
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/**
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* A ListenerBinding is also a {@link org.apache.tapestry.IActionListener}. It registers a
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* number of beans with the BSF manager and invokes the script.
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* <p>
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* Registers the following bean:
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* <ul>
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* <li>component - the relevant {@link IComponent}, typically the same as the page
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* <li>page - the {@link IPage}trigged by the request (obtained by
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* {@link IRequestCycle#getPage()}
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* <li>cycle - the {@link IRequestCycle}, from which can be found the {@link IEngine}, etc.
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* </ul>
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*/
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public void actionTriggered(IComponent component, IRequestCycle cycle) |
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{ |
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BSFManager bsf = _managerFactory.createBSFManager(); |
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Location location = getLocation(); |
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try
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{ |
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IPage page = cycle.getPage(); |
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bsf.declareBean("component", _component, _component.getClass());
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bsf.declareBean("page", page, page.getClass());
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bsf.declareBean("cycle", cycle, cycle.getClass());
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bsf.exec( |
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_language, |
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location.getResource().toString(), |
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location.getLineNumber(), |
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location.getLineNumber(), |
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_script); |
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} |
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catch (BSFException ex)
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{ |
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String message = Tapestry.format("ListenerBinding.bsf-exception", location, ex
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.getMessage()); |
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throw new ApplicationRuntimeException(message, _component, getLocation(), ex); |
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} |
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} |
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/** @since 4.0 */
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public Object getComponent()
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{ |
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return _component;
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} |
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} |
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