DatumField.java

/*
 * This file is part of jHaushalt.
 * jHaushalt 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.
 * jHaushalt 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 jHaushalt; if not, see <http://www.gnu.org/licenses/>.
 * (C)opyright 2002-2010 Dr. Lars H. Hahn
 */

package haushalt.gui;

import haushalt.daten.Datum;

import java.awt.event.KeyEvent;
import java.util.logging.Logger;

import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import javax.swing.text.PlainDocument;

/**
 * Textfeld um das Datum einzugeben.
 * Es muss nur den Anfang des aktuellen Datums eingegeben
 * werden. Auf die Punkte zur Trennung kann verzichtet werden.
 * Das aktuelle Datum kann mit +/- erhöht/erniedrigt werden.
 * 
 * @author Dr. Lars H. Hahn
 * @version 2.6/2009-08-05
 */

/*
 * 2009.08.05 Anpassung an neue Datum.addiereTage(int)
 * 2007.08.07 Pharsen eines nicht deutschen Datums
 * 2007.07.18 Komma als Trennzeichen
 * 2006.06.15 Verwendung der Plus/Minus-Tasten des
 * Nummernblocks ermöglicht
 * 2006.01.28 Plus/Minus-Tasten zum Verändern des Datums
 * hinzugefügt
 */

public class DatumField extends DeleteableTextField {

	private static final boolean DEBUG = false;
	private static final long serialVersionUID = 1L;
	private static final Logger LOGGER = Logger.getLogger(DatumField.class.getName());

	public DatumField() {
		this(new Datum());
	}

	public DatumField(final Datum datum) {
		super("" + datum, 8); // 8 Spalten
	}

	@Override
	protected Document createDefaultModel() {
		return new DatumDocument();
	}

	@Override
	public void keyReleased(final KeyEvent e) {
		super.keyReleased(e);
		final int keycode = e.getKeyCode();
		if ((keycode == KeyEvent.VK_PLUS) || (keycode == KeyEvent.VK_ADD)) {
			final Datum datum = new Datum(getText());
			datum.addiereTage(1);
			setText("" + datum);
		} else if ((keycode == KeyEvent.VK_MINUS) || (keycode == KeyEvent.VK_SUBTRACT)) {
			final Datum datum = new Datum(getText());
			datum.addiereTage(-1);
			setText("" + datum);
		} else if (DEBUG) {
			LOGGER.info("DatumField: KeyCode = " + keycode);
		}
	}

	private static class DatumDocument extends PlainDocument {

		private static final long serialVersionUID = 1L;

		@Override
		public void insertString(final int offs, final String str, final AttributeSet a) throws BadLocationException {
			final char[] source = str.toCharArray();
			final char[] result = new char[11]; // max. 11 Zeichen (Ungarisch):
			// yyyy.mm.tt.
			int j = 0;
			if (TextResource.get().getLocale().getLanguage().equals("de")) {
				final int anzChar = (source.length < 8) ? source.length : 8;

				for (int i = 0; i < anzChar; i++) {
					if (((source[i] == '.') || (source[i] == ',') || (source[i] == '-')) && ((offs + i == 2) || (offs + i == 5))) {
						result[j++] = '.';
					} else {
						if (Character.isDigit(source[i])) {
							if ((offs + i == 2) || (offs + i == 5)) {
								result[j++] = '.';
							}
							result[j++] = source[i];
						}
					}
				}
				if (j + getLength() > 8) {
					j = 8 - getLength();
				}
			} else { /* anderes Land = anderes Datumsformat */
				final int anzChar = source.length;
				for (int i = 0; i < anzChar; i++) {
					if (Character.isDigit(source[i]) || (source[i] == '.') || (source[i] == '/') || (source[i] == '-')) {
						result[j++] = source[i];
					}
				}
			}
			super.insertString(offs, new String(result, 0, j), a);
		}
	}
}