com.googlecode.jsfFlex.component.ext.AbstractFlexUIDateField.java Source code

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Here is the source code for com.googlecode.jsfFlex.component.ext.AbstractFlexUIDateField.java

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/*
 * 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 com.googlecode.jsfFlex.component.ext;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;

import javax.faces.application.FacesMessage;
import javax.faces.component.FacesComponent;
import javax.faces.context.FacesContext;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFComponent;

import com.googlecode.jsfFlex.attributes.IFlexUIBaseAttributes;
import com.googlecode.jsfFlex.attributes.IFlexUISelectedDateAttribute;

/**
 * @author Ji Hoon Kim
 */
@JSFComponent(name = "jf:flexDateField", clazz = "com.googlecode.jsfFlex.component.ext.FlexUIDateField", type = "com.googlecode.jsfFlex.FlexUIDateField", tagClass = "com.googlecode.jsfFlex.taglib.component.ext.FlexUIDateFieldTag", family = "javax.faces.FlexInput", defaultRendererType = "com.googlecode.jsfFlex.FlexDateField", tagSuperclass = "com.googlecode.jsfFlex.taglib.AbstractFlexUIInputTagBase")
@FacesComponent("com.googlecode.jsfFlex.FlexUIDateField")
public abstract class AbstractFlexUIDateField extends com.googlecode.jsfFlex.component.FlexUITextInputBase
        implements IFlexUIBaseAttributes, IFlexUISelectedDateAttribute {

    private final static Log _log = LogFactory.getLog(AbstractFlexUIDateField.class);

    private static final String SELECTED_DATE_ATTR = "selectedDate";
    private static final String SELECTED_DATE_ID_APPENDED = "_selectedDate";

    private static final String DATE_FORMAT_DEFAULT = "EEE MMM dd HH:mm:ss z Z yyyy";

    @Override
    public void decode(FacesContext context) {
        super.decode(context);

        java.util.Map<String, String> requestMap = context.getExternalContext().getRequestParameterMap();

        String selectedDateId = getId() + SELECTED_DATE_ID_APPENDED;
        String selectedDateUpdateVal = requestMap.get(selectedDateId);

        if (selectedDateUpdateVal != null && selectedDateUpdateVal.length() > 0) {
            /*
             * HACK: Since ActionScript returns date in format of "Thu Aug 23 00:00:00 GMT-0700 2009"
             * and "EEE MMM dd HH:mm:ss zZ yyyy" pattern doesn't seem to match it within SimpleDateFormat,
             * place a space between z + Z
             */
            int dashIndex = selectedDateUpdateVal.indexOf("-");
            if (dashIndex != -1) {
                selectedDateUpdateVal = selectedDateUpdateVal.substring(0, dashIndex) + " "
                        + selectedDateUpdateVal.substring(dashIndex);
            }
            Calendar instance = Calendar.getInstance();
            try {
                DateFormat dateFormat = new SimpleDateFormat(DATE_FORMAT_DEFAULT);
                dateFormat.setLenient(true);
                instance.setTime(dateFormat.parse(selectedDateUpdateVal));
                setSelectedDate(instance);
            } catch (ParseException parsingException) {
                setValid(false);
                context.addMessage(getId(),
                        new FacesMessage("Parsing exception for value : " + selectedDateUpdateVal));
                _log.error("Parsing exception for value : " + selectedDateUpdateVal, parsingException);
            }
        }
    }

    @Override
    public void processUpdates(FacesContext context) {
        super.processUpdates(context);

        if (!isRendered() || !isValid()) {
            return;
        }

        javax.el.ValueExpression ve = getValueExpression(SELECTED_DATE_ATTR);

        if (ve != null && !ve.isReadOnly(context.getELContext())) {
            ve.setValue(context.getELContext(), getSelectedDate());
            setSelectedDate(null);
        }

    }

}