/*
 * (c) Copyright 2010-2011 AgileBirds
 *
 * This file is part of OpenFlexo.
 *
 * OpenFlexo 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.
 *
 * OpenFlexo 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 OpenFlexo. If not, see <http://www.gnu.org/licenses/>.
 *
 */
package org.openflexo.components.tabular.model;

import java.util.logging.Level;
import java.util.logging.Logger;

import org.openflexo.FlexoCst;
import org.openflexo.components.widget.AbstractBrowserSelector;
import org.openflexo.components.widget.DMEntitySelector;
import org.openflexo.foundation.FlexoModelObject;
import org.openflexo.foundation.dm.DMEntity;
import org.openflexo.foundation.rm.FlexoProject;

/**
 * Please comment this class
 * 
 * @author sguerin
 * 
 */
public abstract class EntitySelectorColumn<D extends FlexoModelObject, T extends DMEntity> extends SelectorColumn<D, T> {

	protected String STRING_REPRESENTATION_WHEN_NULL = null;

	protected static final Logger logger = Logger.getLogger(EntitySelectorColumn.class.getPackage().getName());

	private Class<T> entityClass;

	public EntitySelectorColumn(String title, int defaultWidth, FlexoProject project, Class<T> entityClass) {
		super(title, defaultWidth, project);
		this.entityClass = entityClass;
	}

	@Override
	public Class<T> getValueClass() {
		return entityClass;
	}

	private DMEntitySelector<T> _viewSelector;

	private DMEntitySelector<T> _editSelector;

	@Override
	protected AbstractBrowserSelector<T> getViewSelector(D rowObject, T value) {
		if (_viewSelector == null) {
			_viewSelector = new DMEntitySelector<T>(_project, null, entityClass);
			_viewSelector.setFont(FlexoCst.MEDIUM_FONT);
			if (STRING_REPRESENTATION_WHEN_NULL != null) {
				_viewSelector.setNullStringRepresentation(STRING_REPRESENTATION_WHEN_NULL);
			}
		}
		_viewSelector.setEditedObject(value);
		return _viewSelector;
	}

	@Override
	protected AbstractBrowserSelector<T> getEditSelector(D rowObject, T value) {
		if (_editSelector == null) {
			_editSelector = new DMEntitySelector<T>(_project, null, entityClass) {
				@Override
				public void apply() {
					super.apply();
					if (logger.isLoggable(Level.FINE)) {
						logger.fine("Apply");
					}
					if (_editedRowObject != null) {
						setValue(_editedRowObject, getEditedObject());
					}
				}

				@Override
				public void cancel() {
					super.cancel();
					if (logger.isLoggable(Level.FINE)) {
						logger.fine("Cancel");
					}
					if (_editedRowObject != null) {
						setValue(_editedRowObject, getRevertValue());
					}
				}
			};
			_editSelector.setFont(FlexoCst.NORMAL_FONT);
		}
		if (STRING_REPRESENTATION_WHEN_NULL != null) {
			_editSelector.setNullStringRepresentation(STRING_REPRESENTATION_WHEN_NULL);
		}
		_editSelector.setEditedObject(value);
		_editSelector.setRevertValue(value);
		return _editSelector;
	}

	public void setNullStringRepresentation(String aString) {
		STRING_REPRESENTATION_WHEN_NULL = aString;
	}

}