org.apache.myfaces.trinidad.convert.ColorFormat Maven / Gradle / Ivy
/*
* 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.trinidad.convert;
import java.awt.Color;
import java.text.FieldPosition;
import java.text.Format;
import java.text.ParseException;
import java.text.ParsePosition;
import org.apache.myfaces.trinidad.logging.TrinidadLogger;
/**
* Format for colors.
*
* @version $Name: $ ($Revision: adfrt/faces/adf-faces-api/src/main/java/oracle/adf/view/faces/convert/ColorFormat.java#0 $) $Date: 10-nov-2005.19:09:10 $
* @todo This class needs to be part of the public API - need to move it to
* place where our public API exists, once we have figured it out.
*/
abstract class ColorFormat extends Format
{
/**
* Returns the value as a Color.
*/
public final Color parse(
String source,
ParsePosition status)
{
return (Color)parseObject(source, status);
}
/**
* Returns the value as a Color.
*/
public final Color parse(
String source) throws ParseException
{
return (Color)parseObject(source);
}
/**
* Parses a string to produce an object.
*
* @exception ParseException if the specified string is invalid.
*/
@Override
public Object parseObject(
String source) throws ParseException
{
ParsePosition status = new ParsePosition(0);
Object result = null;
boolean illegalArgument = false;
// We expect a IllegalArgumentException in case either of
// R/G/B color comps were to be out of range.
try
{
result = parseObject(source, status);
}
catch(IllegalArgumentException ie)
{
_LOG.warning(ie);
illegalArgument = true;
}
int index = status.getIndex();
if (illegalArgument || index == 0 ||
(source != null && index < source.length()))
{
throw new ParseException("Format.parseObject(String) failed",
status.getErrorIndex());
}
return result;
}
/**
* Returns the value as a Color.
*/
@Override
abstract public Object parseObject(
String source,
ParsePosition status);
/**
* Formats a Color into a color string.
*
* @param color the color value to be formatted into a color string
*
* @return the formatted color string
*/
public final String format(
Color color)
{
return format(color, new StringBuffer(),new FieldPosition(0)).toString();
}
@Override
public final StringBuffer format(
Object obj,
StringBuffer toAppendTo,
FieldPosition fieldPosition)
{
if (obj instanceof Color)
{
return format((Color)obj, toAppendTo, fieldPosition);
}
else if (obj instanceof Number)
{
return format(new Color(((Number)obj).intValue()),
toAppendTo, fieldPosition);
}
else
{
throw
new IllegalArgumentException(_LOG.getMessage(
"CANNOT_FORMAT_GIVEN_OBJECT_AS_COLOR"));
}
}
abstract public StringBuffer format(
Color color,
StringBuffer toAppendTo,
FieldPosition pos);
private static final TrinidadLogger _LOG = TrinidadLogger.createTrinidadLogger(
ColorFormat.class);
private static final long serialVersionUID = 1L;
}