calcactionlistener.java

来自「一个使用struts+hibernate+spring开发的完的网站源代码。」· Java 代码 · 共 52 行

/*
 * Copyright 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.myfaces.examples.example1;

import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.el.VariableResolver;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.ActionEvent;
import javax.faces.event.ActionListener;

/**
 * DOCUMENT ME!
 * @author Manfred Geiler
 * @version $Revision: 1.1 $ $Date: 2005/03/24 16:47:10 $
 */
public class CalcActionListener
    implements ActionListener
{
    public void processAction(ActionEvent event) throws AbortProcessingException
    {
        FacesContext facesContext = FacesContext.getCurrentInstance();
        UIComponent component = event.getComponent();

        VariableResolver vr = facesContext.getApplication().getVariableResolver();
        CalcForm form = (CalcForm)vr.resolveVariable(facesContext, "calcForm");
        if (component.getId().equals("addButton") ||
            component.getId().equals("href1"))
        {
            form.add();
        }
        else
        {
            form.subtract();
        }
    }

}