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App55 client library for the Java platform.
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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.openbeans;

import java.awt.Component;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.apache.harmony.beans.internal.nls.Messages;

public class PropertyEditorSupport implements PropertyEditor
{

	Object							source		= null;

	List	listeners	= new ArrayList();

	Object							newValue	= null;

	public PropertyEditorSupport(Object source)
	{
		if (source == null)
		{
			throw new NullPointerException(Messages.getString("beans.0C")); //$NON-NLS-1$
		}
		this.source = source;
	}

	public PropertyEditorSupport()
	{
		source = this;
	}

	public void paintValue(Graphics gfx, Rectangle box)
	{
		// expected
	}

	public void setAsText(String text) throws IllegalArgumentException
	{
		if (newValue instanceof String)
		{
			setValue(text);
		}
		else
		{
			throw new IllegalArgumentException(text);
		}
	}

	public String[] getTags()
	{
		return null;
	}

	public String getJavaInitializationString()
	{
		return "???"; //$NON-NLS-1$
	}

	public String getAsText()
	{
		return newValue == null ? "null" : newValue.toString(); //$NON-NLS-1$
	}

	public void setValue(Object value)
	{
		this.newValue = value;
		firePropertyChange();
	}

	public Object getValue()
	{
		return newValue;
	}

	public void setSource(Object source)
	{
		this.source = source;
	}

	public Object getSource()
	{
		return source;
	}

	public synchronized void removePropertyChangeListener(PropertyChangeListener listener)
	{
		if (listeners != null)
		{
			listeners.remove(listener);
		}
	}

	public synchronized void addPropertyChangeListener(PropertyChangeListener listener)
	{
		listeners.add(listener);
	}

	public Component getCustomEditor()
	{
		return null;
	}

	public boolean supportsCustomEditor()
	{
		return false;
	}

	public boolean isPaintable()
	{
		return false;
	}

	public void firePropertyChange()
	{
		if (listeners.isEmpty())
		{
			return;
		}

		List copy = new ArrayList(listeners.size());
		synchronized (listeners)
		{
			copy.addAll(listeners);
		}

		PropertyChangeEvent changeAllEvent = new PropertyChangeEvent(source, null, null, null);
		for (Iterator listenersItr = copy.iterator(); listenersItr.hasNext();)
		{
			PropertyChangeListener listna = listenersItr.next();
			listna.propertyChange(changeAllEvent);
		}
	}
}