org.apache.myfaces.custom.date.HtmlInputDateTagHandler Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of tomahawk21 Show documentation
JSF components and utilities that can be used with any JSF implementation. This library is based on the JSF1.1 version of Tomahawk, but with minor source code and build changes to take advantage of JSF2.1 features. A JSF2.1 implementation is required to use this version of the Tomahawk library.
The newest version!
/*
 * 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.myfaces.custom.date;

import javax.faces.component.UIComponent;
import javax.faces.view.facelets.ComponentConfig;
import javax.faces.view.facelets.ComponentHandler;
import javax.faces.view.facelets.FaceletContext;
import javax.faces.view.facelets.MetaRule;
import javax.faces.view.facelets.MetaRuleset;
import javax.faces.view.facelets.Metadata;
import javax.faces.view.facelets.MetadataTarget;
import javax.faces.view.facelets.TagAttribute;

import org.apache.myfaces.custom.calendar.DateBusinessConverter;
import org.apache.myfaces.shared_tomahawk.util.ClassUtils;

/**
 * 
 * @since 1.1.10
 * @author Leonardo Uribe (latest modification by $Author: lu4242 $)
 * @version $Revision: 691856 $ $Date: 2008-09-03 21:40:30 -0500 (mié, 03 sep 2008) $
 */
public class HtmlInputDateTagHandler extends ComponentHandler
{

    public HtmlInputDateTagHandler(ComponentConfig config)
    {
        super(config);
    }

    protected MetaRuleset createMetaRuleset(Class type)
    {
        MetaRuleset m = super.createMetaRuleset(type).alias("class", "styleClass");

        m.addRule(DateBusinessConverterRule.INSTANCE);

        return m;
    }

    public static class DateBusinessConverterRule extends MetaRule
    {
        public final static DateBusinessConverterRule INSTANCE = new DateBusinessConverterRule();

        final static class LiteralConverterMetadata extends Metadata
        {

            private final Class dateBusinessConverterClass;

            public LiteralConverterMetadata(String dateBusinessConverterClass)
            {
                try
                {
                    this.dateBusinessConverterClass = ClassUtils
                            .classForName(dateBusinessConverterClass);
                }
                catch(ClassNotFoundException e)
                {
                    throw new IllegalArgumentException("Class referenced in calendarConverter not found: "+dateBusinessConverterClass);
                }
                catch(ClassCastException e)
                {
                    throw new IllegalArgumentException("Class referenced in calendarConverter is not instance of org.apache.myfaces.custom.calendar.CalendarConverter: "+dateBusinessConverterClass);
                }
            }

            public void applyMetadata(FaceletContext ctx, Object instance)
            {
                ((AbstractHtmlInputDate) instance)
                        .setDateBusinessConverter((DateBusinessConverter) ClassUtils
                                .newInstance(dateBusinessConverterClass));
            }
        }

        final static class DynamicConverterMetadata extends Metadata
        {
            private final TagAttribute attr;

            public DynamicConverterMetadata(TagAttribute attr)
            {
                this.attr = attr;
            }

            public void applyMetadata(FaceletContext ctx, Object instance)
            {
                ((UIComponent) instance).setValueExpression("dateBusinessConverter",
                        attr.getValueExpression(ctx,
                                DateBusinessConverter.class));
            }
        }

        public Metadata applyRule(String name, TagAttribute attribute,
                MetadataTarget meta)
        {
            if (meta.isTargetInstanceOf(AbstractHtmlInputDate.class))
            {
                if ("dateBusinessConverter".equals(name)) {
                    if (attribute.isLiteral()) {
                        return new LiteralConverterMetadata(attribute.getValue());
                    } else {
                        return new DynamicConverterMetadata(attribute);
                    }
                }
            }
            return null;
        }
    }
}