/*
 *  Copyright (C) 2010-2025 JPEXS
 * 
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 * 
 *  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, see <http://www.gnu.org/licenses/>.
 */
package de.javagl.treetable;

import java.util.EventObject;
import javax.swing.CellEditor;
import javax.swing.event.CellEditorListener;
import javax.swing.event.ChangeEvent;
import javax.swing.event.EventListenerList;


/**
 * Abstract base implementation of a CellEditor for a {@link JTreeTable}.
 */
public class AbstractCellEditor implements CellEditor
{
    /**
     * The list of CellEditorListeners
     */
    private final EventListenerList listenerList = new EventListenerList();

    @Override
    public Object getCellEditorValue()
    {
        return null;
    }

    @Override
    public boolean isCellEditable(EventObject e)
    {
        return true;
    }

    @Override
    public boolean shouldSelectCell(EventObject anEvent)
    {
        return false;
    }

    @Override
    public boolean stopCellEditing()
    {
        return true;
    }

    @Override
    public void cancelCellEditing()
    {
        // Empty default implementation
    }

    @Override
    public final void addCellEditorListener(CellEditorListener l)
    {
        listenerList.add(CellEditorListener.class, l);
    }

    @Override
    public final void removeCellEditorListener(CellEditorListener l)
    {
        listenerList.remove(CellEditorListener.class, l);
    }

    /**
     * Notify all listeners that have registered interest for notification on
     * this event type.
     */
    protected final void fireEditingStopped()
    {
        Object[] listeners = listenerList.getListenerList();
        for (int i = listeners.length - 2; i >= 0; i -= 2)
        {
            if (listeners[i] == CellEditorListener.class)
            {
                ((CellEditorListener) listeners[i + 1])
                    .editingStopped(new ChangeEvent(this));
            }
        }
    }

    /**
     * Notify all listeners that have registered interest for notification on
     * this event type.
     */
    protected final void fireEditingCanceled()
    {
        Object[] listeners = listenerList.getListenerList();
        for (int i = listeners.length - 2; i >= 0; i -= 2)
        {
            if (listeners[i] == CellEditorListener.class)
            {
                ((CellEditorListener) listeners[i + 1])
                    .editingCanceled(new ChangeEvent(this));
            }
        }
    }
}