source: other-projects/trunk/realistic-books/packages/AntInstaller/src/org/tp23/antinstaller/input/DateInput.java@ 19253

/* 
 * Copyright 2005 Paul Hinds
 *
 * 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.tp23.antinstaller.input;


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

import org.tp23.antinstaller.InstallerContext;
import org.tp23.antinstaller.ValidationException;


/**
 *
 * <p>Free text input type with validation a SimpleDataFormat instance. </p>
 * <p>By default the date format is <code>dd/MM/yyyy</code> unless it
 * is overriden in teh antinstall-config.xml file. </p>
 * @author Paul Hinds
 * @version $Id: DateInput.java,v 1.1.1.1 2005/10/18 18:20:54 teknopaul Exp $
 */
public class DateInput
    extends InputField{

    private String dateFormat = "dd/MM/yyyy";
    private DateFormat formatter = new SimpleDateFormat(dateFormat);

    public DateInput() {
        formatter.setLenient(false);
    }

    public String getDateFormat() {
        return dateFormat;
    }
    public void setDateFormat(String dateFormat) {
        try {
            formatter = new SimpleDateFormat(dateFormat);
            formatter.setLenient(false);
            this.dateFormat = dateFormat;
        }
        catch (RuntimeException e) {
            throw new InputException("Invalid date format in DateInput");
        }
    }

    public void setValue(String dir){
        setInputResult(dir);
    }

    /**
     * Called to validate the user input
     */
    public boolean validate(InstallerContext cxt) throws ValidationException{
        if (getInputResult() == null)return false;
        String toTest = getInputResult();
        try {
            formatter.parse(toTest);
        }
        catch (ParseException ex) {
            return false;
        }
        return true;
    }

    public void setDefaultValue(String defaultValue) {
        if(defaultValue.equals("TODAY")){
            this.defaultValue = formatter.format(new Date());
        } else {
            this.defaultValue = defaultValue;
        }
    }
    
    /**
     * Used by checkConfig to validate the configuration file.
     * Not used at runtime.
     * @return boolean
     */
    public boolean validateObject() {
        if(getDisplayText()==null){
            System.out.println("Date:displayText must be set");
            return false;
        }
        if(getProperty()==null){
            System.out.println("Date:property must be set");
            return false;
        }
        if(getDefaultValue()==null){
            System.out.println("Date:defaultValue must be set");
            return false;
        }
        return true;
    }
}