WBinaryEditor.java

/******************************************************************************
 * Copyright (C) 2008 Low Heng Sin  All Rights Reserved.                      *
 * This program is free software; you can redistribute it and/or modify it    *
 * under the terms version 2 of the GNU General Public License as published   *
 * by the Free Software Foundation. This program is distributed in the hope   *
 * that it will be useful, but WITHOUT ANY WARRANTY; without even the implied *
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.           *
 * See the GNU General Public License for more details.                       *
 * You should have received a copy of the GNU General Public License along    *
 * with this program; if not, write to the Free Software Foundation, Inc.,    *
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.                     *
 *****************************************************************************/

package org.adempiere.webui.editor;


import org.adempiere.webui.component.Button;
import org.adempiere.webui.event.ValueChangeEvent;
import org.adempiere.webui.window.WMediaDialog;
import org.compiere.model.GridField;
import org.compiere.util.CLogger;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.Events;

/**
 * @author Low Heng Sin
 */
public class WBinaryEditor extends WEditor
{
    private static final String[] LISTENER_EVENTS = {Events.ON_CLICK};
    
    /**	Logger			*/
	private static CLogger log = CLogger.getCLogger(WBinaryEditor.class);
    
    private boolean         m_mandatory;
    private Object          m_data;
   
    public WBinaryEditor(GridField gridField)
    {
        super(new Button(), gridField);
        init();
    }

    private void init()
    {
        label.setValue(" ");
        getComponent().setLabel("-");
        getComponent().setTooltiptext(gridField.getDescription());
    }

     @Override
    public String getDisplay()
    {
        return getComponent().getLabel();
    }

    @Override
    public Object getValue()
    {
        return m_data;
    }

    @Override
    public boolean isMandatory()
    {
        return m_mandatory;
    }
   
    
    @Override
    public void setMandatory(boolean mandatory)
    {
        m_mandatory = mandatory;
    }

    @Override
    public Button getComponent() {
    	return (Button) component;
    }
    
    @Override
	public boolean isReadWrite() {
		return getComponent().isEnabled();
	}

	@Override
	public void setReadWrite(boolean readWrite) {
		getComponent().setEnabled(readWrite);
	}

	@Override
    public void setValue(Object value)
    {
    	log.config("=" + value);
		m_data = value;
		if (m_data == null)
			getComponent().setLabel("-");
		else
		{
			String text = "?";
			if (m_data instanceof byte[])
			{
				byte[] bb = (byte[])m_data;
				text = "#" + bb.length;
			}
			else
			{
				text = m_data.getClass().getName();
				int index = text.lastIndexOf('.');
				if (index != -1)
					text = text.substring(index+1);
			}
			getComponent().setLabel(text);
		}
    }
    
    @Override
    public String[] getEvents()
    {
        return LISTENER_EVENTS;
    }

	public void onEvent(Event event) throws Exception 
	{
		if (Events.ON_CLICK.equals(event.getName()))
		{
			WMediaDialog dialog = new WMediaDialog(gridField.getHeader(), m_data);
			if (!dialog.isCancel() && dialog.isChange())
			{
				Object oldValue = m_data;
				Object newValue = dialog.getData();
				if (oldValue != null && newValue != null && oldValue.equals(newValue)) {
		    	    return;
		    	}
		        if (oldValue == null && newValue == null) {
		        	return;
		        }
		        ValueChangeEvent changeEvent = new ValueChangeEvent(this, this.getColumnName(), oldValue, newValue);
		        super.fireValueChange(changeEvent);
				setValue(newValue);
			}
		}
	}
}