rendererutils.java

一个使用struts+hibernate+spring开发的完的网站源代码。

/*
 * 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.renderkit;

import org.apache.myfaces.util.HashMapUtils;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import javax.faces.FacesException;
import javax.faces.render.Renderer;
import javax.faces.component.*;
import javax.faces.component.html.HtmlInputText;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import javax.faces.convert.ConverterException;
import javax.faces.el.ValueBinding;
import javax.faces.el.PropertyNotFoundException;
import javax.faces.model.SelectItem;
import java.io.IOException;
import java.lang.reflect.Array;
import java.util.*;

/**
 * @author Manfred Geiler (latest modification by $Author: manolito $)
 * @version $Revision: 1.23 $ $Date: 2005/04/06 10:21:55 $
 * $Log: RendererUtils.java,v $
 * Revision 1.23  2005/04/06 10:21:55  manolito
 * MYFACES-149 fix for NullPointerException in _SharedRendererUtils.getConvertedUISelectManyValue
 *
 * Revision 1.22  2005/01/26 13:27:16  mmarinschek
 * The x:message tags are now extended to use the column-name as a label for all inputs in an x:dataTable, without having to specify additional information.
 *
 * Revision 1.21  2005/01/22 16:47:17  mmarinschek
 * fixing bug with validation not called if the submitted value is empty; an empty string is submitted instead if the component is enabled.
 *
 * Revision 1.20  2005/01/18 22:43:05  svieujot
 * Fix some bugs where converter wasn't used to determine selected values.
 * This caused for examples the list, checkbox and radio based components to bug when the backing bean value type is a primitive.
 *
 * Revision 1.19  2005/01/09 18:15:12  mmarinschek
 * small changes - better error handling, label renderer supports more hooks for sub-classes
 *
 * Revision 1.18  2005/01/07 01:54:35  svieujot
 * radioRenderer wasn't looking at the submitted value.
 *
 * Revision 1.17  2005/01/05 23:06:43  svieujot
 * Fix bug : checkbox wasn't looking at the submitted value.
 *
 * Revision 1.16  2004/12/14 14:12:33  mmarinschek
 * PR:
 * Obtained from:
 * Submitted by:	
 * Reviewed by:
 *
 * Revision 1.15  2004/12/09 12:18:43  mmarinschek
 * changes in Calendar-Renderer to check for submitted-value first
 *
 * Revision 1.14  2004/10/13 11:51:01  matze
 * renamed packages to org.apache
 *
 * Revision 1.13  2004/09/06 08:41:49  tinytoony
 * changes to calendar - rendering wrong weekday, check output-text behavior
 *
 * Revision 1.12  2004/07/01 22:01:18  mwessendorf
 * ASF switch
 *
 * Revision 1.11  2004/06/23 12:42:26  tinytoony
 * just a tad more information ;)
 *
 * Revision 1.10  2004/05/18 14:31:40  manolito
 * user role support completely moved to components source tree
 *
 * Revision 1.9  2004/04/28 10:38:33  tinytoony
 * child is of type added to exception message
 *
 * Revision 1.8  2004/04/28 10:37:14  tinytoony
 * child is of type added to exception message
 *
 * Revision 1.7  2004/04/28 08:17:11  tinytoony
 * child is of type added to exception message
 *
 * Revision 1.6  2004/04/07 08:21:10  manolito
 * handling of select items with label == null
 *
 * Revision 1.5  2004/04/06 15:33:21  manolito
 * getStringValue must return submitted value if any
 *
 */
public class RendererUtils
{
    private static final Log log = LogFactory.getLog(RendererUtils.class);

    public static final String SELECT_ITEM_LIST_ATTR = RendererUtils.class.getName() + ".LIST";
    public static final String EMPTY_STRING = new String();

    public static String getPathToComponent(UIComponent component)
    {
        StringBuffer buf = new StringBuffer();

        if(component == null)
        {
            buf.append("{Component-Path : ");
            buf.append("[null]}");
            return buf.toString();
        }

        getPathToComponent(component,buf);

        buf.insert(0,"{Component-Path : ");
        buf.append("}");

        return buf.toString();
    }

    private static void getPathToComponent(UIComponent component, StringBuffer buf)
    {
        if(component == null)
            return;

        StringBuffer intBuf = new StringBuffer();

        intBuf.append("[Class: ");
        intBuf.append(component.getClass().getName());
        if(component instanceof UIViewRoot)
        {
            intBuf.append(",ViewId: ");
            intBuf.append(((UIViewRoot) component).getViewId());
        }
        else
        {
            intBuf.append(",Id: ");
            intBuf.append(component.getId());
        }
        intBuf.append("]");

        buf.insert(0,intBuf);

        if(component!=null)
        {
            getPathToComponent(component.getParent(),buf);
        }
    }

    public static String getConcatenatedId(FacesContext context, UIComponent container,
                                           String clientId)
    {
        UIComponent child = container.findComponent(clientId);

        if(child == null)
                return clientId;

        return getConcatenatedId(context, child);
    }

    public static String getConcatenatedId(FacesContext context, UIComponent component)
    {
        if (context == null) throw new NullPointerException("context");

        StringBuffer idBuf = new StringBuffer();

        idBuf.append(component.getId());

        UIComponent parent = null;

        while((parent = component.getParent())!=null)
        {
            if(parent instanceof NamingContainer)
            {
                idBuf.insert(0,NamingContainer.SEPARATOR_CHAR);
                idBuf.insert(0,parent.getId());
            }
        }

        return idBuf.toString();
    }

    public static Boolean getBooleanValue(UIComponent component)
    {
        if (!(component instanceof ValueHolder))
        {
            throw new IllegalArgumentException("Component : "+getPathToComponent(component)
                    +"is not a ValueHolder");
        }

        if (component instanceof EditableValueHolder)
        {
            Object submittedValue = ((EditableValueHolder)component).getSubmittedValue();
            if (submittedValue != null)
            {
                if (submittedValue instanceof Boolean)
                {
                    return (Boolean)submittedValue;
                }
                else
                {
                    throw new IllegalArgumentException("Expected submitted value of type Boolean for component : "+
                            getPathToComponent(component));
                }
            }
        }

        Object value = ((ValueHolder)component).getValue();

        if (value==null || value instanceof Boolean)
        {
            return (Boolean) value;
        }
        else
        {
            throw new IllegalArgumentException("Expected submitted value of type Boolean for Component : "+
                    getPathToComponent(component));
        }
    }
    
    public static Date getDateValue(UIComponent component)
    {
        if (!(component instanceof ValueHolder))
        {
            throw new IllegalArgumentException("Component : "+
                    getPathToComponent(component)+"is not a ValueHolder");
        }

        if (component instanceof EditableValueHolder)
        {
            Object submittedValue = ((EditableValueHolder)component).getSubmittedValue();
            if (submittedValue != null)
            {
                if (submittedValue instanceof Date)
                {
                    return (Date)submittedValue;
                }
                else
                {
                    throw new IllegalArgumentException(
                            "Expected submitted value of type Date for component : "+
                            getPathToComponent(component));
                }
            }
        }

        Object value = ((ValueHolder)component).getValue();

        if (value==null || value instanceof Date)
        {
            return (Date) value;
        }
        else
        {
            throw new IllegalArgumentException("Expected submitted value of type Date for component : "
                +getPathToComponent(component));
        }
    }


    public static String getStringValue(FacesContext facesContext,
                                        UIComponent component)
    {
        try
        {
            if (!(component instanceof ValueHolder))
            {
                throw new IllegalArgumentException("Component : "+getPathToComponent(component)+"is not a ValueHolder");
            }

            if (component instanceof EditableValueHolder)
            {
                Object submittedValue = ((EditableValueHolder)component).getSubmittedValue();
                if (submittedValue != null)
                {
                    if (submittedValue instanceof String)
                    {
                        return (String)submittedValue;
                    }
                    else
                    {
                        throw new IllegalArgumentException("Expected submitted value of type String for component : "
                            +getPathToComponent(component));
                    }