IEDropDownWidgetView.java

/*
 * (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.ie.view.widget;

import java.awt.Component;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Vector;

import javax.swing.BorderFactory;
import javax.swing.DefaultListCellRenderer;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;

import org.openflexo.foundation.DataModification;
import org.openflexo.foundation.FlexoObservable;
import org.openflexo.foundation.ie.dm.ListOfValuesHasChanged;
import org.openflexo.foundation.ie.dm.table.WidgetRemovedFromTable;
import org.openflexo.foundation.ie.widget.IEDropDownWidget;
import org.openflexo.foundation.ie.widget.IETDWidget;
import org.openflexo.ie.view.IEWOComponentView;
import org.openflexo.ie.view.controller.IEController;

/**
 * @author bmangez
 * 
 *         To change the template for this generated type comment go to Window - Preferences - Java - Code Generation - Code and Comments
 */
public class IEDropDownWidgetView extends AbstractInnerTableWidgetView<IEDropDownWidget> {

	// ==========================================================================
	// ============================= Variables
	// ==================================
	// ==========================================================================
	private transient JComboBox _jComboBox;

	private JPanel container;

	protected TransparentMouseListener tml;

	public static final String BINDING_ISCHECKED_NAME = "isChecked";

	public static final String ATTRIB_DEFAULTVALUE_NAME = "defaultValue";

	public static final String ATTRIB_EXAMPLELIST_NAME = "exampleList";

	public static final Font TEXTFIELD_FONT = new Font("SansSerif", Font.PLAIN, 10);

	public IEDropDownWidgetView(IEController ieController, IEDropDownWidget model, boolean addDnDSupport, IEWOComponentView view) {
		super(ieController, model, addDnDSupport, view);
		FlowLayout layout = new FlowLayout(FlowLayout.CENTER, 0, 0);
		setLayout(layout);
		_jComboBox = new JComboBox(new Vector<Object>(model.getValueList()));
		_jComboBox.setFont(TEXTFIELD_FONT);
		_jComboBox.setFocusable(false);
		tml = new TransparentMouseListener(_jComboBox, this);
		_jComboBox.addMouseListener(tml);
		_jComboBox.addMouseMotionListener(tml);
		container = new JPanel(new FlowLayout(FlowLayout.CENTER, 4, 4));
		container.setOpaque(false);
		add(container);
		container.add(_jComboBox);
		if (getDropDownModel().getDescription() != null) {
			_jComboBox.setToolTipText(getDropDownModel().getDescription());
		}
		if (getDropDownModel().getValue() != null) {
			_jComboBox.setSelectedItem(getDropDownModel().getValue());
		} else {
			_jComboBox.setSelectedIndex(0);
		}
		_jComboBox.addActionListener(new ActionListener() {

			@Override
			public void actionPerformed(ActionEvent e) {
				JComboBox cb = (JComboBox) e.getSource();
				getModel().setValue((String) cb.getSelectedItem());
			}
		});
		_jComboBox.setRenderer(new DefaultListCellRenderer() {
			/**
			 * Overrides getListCellRendererComponent
			 * 
			 * @see javax.swing.DefaultListCellRenderer#getListCellRendererComponent(javax.swing.JList, java.lang.Object, int, boolean,
			 *      boolean)
			 */
			@Override
			public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {

				JLabel l = (JLabel) super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
				l.addMouseListener(tml);
				l.addMouseMotionListener(tml);
				return l;
			}
		});
		setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));
		container.setBackground(getBackgroundColor());
	}

	public IEDropDownWidget getDropDownModel() {
		return getModel();
	}

	@Override
	public Dimension getPreferredSize() {
		if (getModel().getParent() instanceof IETDWidget) {
			Dimension d = container.getPreferredSize();
			d.width += 2;
			d.height += 2;
			return d;
		}
		Dimension d = super.getPreferredSize();
		return d;
	}

	/*
	 * (non-Javadoc)
	 *
	 * @see java.util.Observer#update(java.util.Observable, java.lang.Object)
	 */
	@Override
	public void update(FlexoObservable arg0, DataModification modif) {
		String propertyName = modif.propertyName();
		if (propertyName != null) {
			if (propertyName.equals("value")) {
				if (getDropDownModel().getValue() != null) {
					_jComboBox.setSelectedItem(getDropDownModel().getValue());
				} else {
					_jComboBox.setSelectedIndex(0);
				}

			} else if (propertyName.equals(ATTRIB_EXAMPLELIST_NAME) || propertyName.equals("domain")
					|| modif instanceof ListOfValuesHasChanged) {
				container.remove(_jComboBox);
				_jComboBox = new JComboBox(new Vector<Object>(getModel().getValueList()));
				_jComboBox.setFont(TEXTFIELD_FONT);
				if (getDropDownModel().getValue() != null) {
					_jComboBox.setSelectedItem(getDropDownModel().getValue());
				} else {
					_jComboBox.setSelectedIndex(0);
				}
				_jComboBox.setFocusable(false);
				container.add(_jComboBox);
				validate();
				repaint();
			} else if (propertyName.equals("colSpan") || propertyName.equals("rowSpan")) {
				((JComponent) getParent()).revalidate();
				((JComponent) getParent()).repaint();
			}
		}
		if (modif instanceof WidgetRemovedFromTable && arg0 == getModel()) {
			delete();
		} else {
			super.update(arg0, modif);
		}
	}

}