SettingsPanel.java

/*******************************************************************************
 * Copyright (c) 2003-2005, 2013 Till Zoppke.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     Till Zoppke - initial API and implementation
 ******************************************************************************/
/*
 * Created on 02.05.2004
 */
package eniac.menu.action.gui;

import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.util.Vector;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.KeyStroke;
import javax.swing.SwingUtilities;
import javax.swing.table.DefaultTableModel;

import eniac.lang.Dictionary;
import eniac.util.EProperties;

/**
 * @author zoppke
 */
public class SettingsPanel extends DialogPanel {

	private boolean _okPressed = false;

	private JScrollPane _scrollPane;

	private JTable _table;

	private Action _okAction;

	private Action _cancelAction;

	public SettingsPanel() {
		super(new GridBagLayout());
	}

	public void init() {

		/*
		 * ============================ actions ================================
		 */

		// create and add okAction
		_okAction = new AbstractAction() {
			public void actionPerformed(ActionEvent e) {
				performOkAction();
			}
		};
		_okAction.putValue(Action.NAME, Dictionary.OK.getText());
		getActionMap().put(_okAction.getValue(Action.NAME), _okAction);

		// create and add cancelAction
		_cancelAction = new AbstractAction() {
			public void actionPerformed(ActionEvent e) {
				performCancelAction();
			}
		};
		_cancelAction.putValue(Action.NAME, Dictionary.CANCEL.getText());
		getActionMap().put(_cancelAction.getValue(Action.NAME), _cancelAction);

		/*
		 * ============================= layout ================================
		 */

		// create components
		JButton okButton = new JButton(_okAction);
		JButton cancelButton = new JButton(_cancelAction);
		_table = new JTable(new MyTableModel());
		_scrollPane = new JScrollPane(_table);

		// add components
		add(_scrollPane, new GridBagConstraints(0, 0, 2, 1, 1.0, 1.0, GridBagConstraints.CENTER,
				GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
		add(okButton, new GridBagConstraints(0, 1, 1, 1, 1.0, 0.0, GridBagConstraints.CENTER,
				GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
		add(cancelButton, new GridBagConstraints(1, 1, 1, 1, 1.0, 0.0, GridBagConstraints.CENTER,
				GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));

		/*
		 * ============================ add keystrokes =========================
		 */

		// fill actionMap
		getActionMap().put(_okAction.getValue(Action.NAME), _okAction);
		getActionMap().put(_cancelAction.getValue(Action.NAME), _cancelAction);

		// fill inputMap
		getInputMap(WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0),
				_okAction.getValue(Action.NAME));
		getInputMap(WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0),
				_cancelAction.getValue(Action.NAME));

		// adjust inputMaps of buttons
		cancelButton.getActionMap().setParent(getActionMap());
		cancelButton.getInputMap(WHEN_FOCUSED).put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0),
				_cancelAction.getValue(Action.NAME));
	}

	/*
	 * ============================== methods ==================================
	 */

	public void performCancelAction() {

		// set cancel pressed and close window
		_okPressed = false;
		SwingUtilities.windowForComponent(SettingsPanel.this).dispose();
	}

	void performOkAction() {

		// set ok pressed
		_okPressed = true;

		// if currently a cell is editing, stop editing to get the new value.
		if (_table.isEditing()) {
			_table.getCellEditor().stopCellEditing();
		}
		// close window
		SwingUtilities.windowForComponent(SettingsPanel.this).dispose();
	}

	public boolean isOkPressed() {
		return _okPressed;
	}

	@SuppressWarnings("unchecked")
	public Vector<Vector<String>> getDataVector() {
		return ((MyTableModel) _table.getModel()).getDataVector();
	}

	/*
	 * ====================== inner class MyTableModel =========================
	 */

	// table model that prevents the first column from being edited
	private class MyTableModel extends DefaultTableModel {

		public MyTableModel() {

			// create data vector
			Vector<Vector<String>> newDataVector = new Vector<>();
			for (String key : EProperties.getInstance().stringPropertyNames()) {
				String value = EProperties.getInstance().getProperty(key);
				Vector<String> row = new Vector<>();
				row.add(key);
				row.add(value);
				newDataVector.add(row);
			}

			// create column identifiers
			Vector<String> newColumnIdentifiers = new Vector<>();
			newColumnIdentifiers.add(Dictionary.NAME.getText());
			newColumnIdentifiers.add(Dictionary.VALUE.getText());

			// set data vector
			setDataVector(newDataVector, newColumnIdentifiers);
		}

		public boolean isCellEditable(int row, int column) {
			return column == 1;
		}
	}

}