/*
* $Id: ComponentTagSupport.java 651946 2008-04-27 13:41:38Z apetrelli $
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.struts2.views.jsp;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspException;
import org.apache.struts2.components.Component;
import org.apache.struts2.dispatcher.Dispatcher;
import com.opensymphony.xwork2.inject.Container;
import com.opensymphony.xwork2.util.ValueStack;
/**
*/
public abstract class ComponentTagSupport extends StrutsBodyTagSupport {
protected Component component;
public abstract Component getBean(ValueStack stack, HttpServletRequest req, HttpServletResponse res);
public int doEndTag() throws JspException {
component.end(pageContext.getOut(), getBody());
component = null;
return EVAL_PAGE;
}
public int doStartTag() throws JspException {
component = getBean(getStack(), (HttpServletRequest) pageContext.getRequest(), (HttpServletResponse) pageContext.getResponse());
Container container = Dispatcher.getInstance().getContainer();
container.inject(component);
populateParams();
boolean evalBody = component.start(pageContext.getOut());
if (evalBody) {
return component.usesBody() ? EVAL_BODY_BUFFERED : EVAL_BODY_INCLUDE;
} else {
return SKIP_BODY;
}
}
protected void populateParams() {
}
public Component getComponent() {
return component;
}
}
|