- /*
- * @(#)DateFormatter.java 1.9 03/01/23
- *
- * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
- * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
- */
- package javax.swing.text;
-
- import java.awt.event.*;
- import java.text.*;
- import java.util.*;
- import javax.swing.*;
- import javax.swing.text.*;
-
- /**
- * DateFormatter is an <code>InternationalFormatter</code> that does its
- * formatting by way of an instance of <code>java.text.DateFormat</code>.
- * <p>
- * <strong>Warning:</strong>
- * Serialized objects of this class will not be compatible with
- * future Swing releases. The current serialization support is
- * appropriate for short term storage or RMI between applications running
- * the same version of Swing. As of 1.4, support for long term storage
- * of all JavaBeans<sup><font size="-2">TM</font></sup>
- * has been added to the <code>java.beans</code> package.
- * Please see {@link java.beans.XMLEncoder}.
- *
- * @see java.text.DateFormat
- *
- * @version 1.5 04/09/01
- * @since 1.4
- */
- public class DateFormatter extends InternationalFormatter {
- /**
- * This is shorthand for
- * <code>new DateFormatter(DateFormat.getDateInstance())</code>.
- */
- public DateFormatter() {
- this(DateFormat.getDateInstance());
- }
-
- /**
- * Returns a DateFormatter configured with the specified
- * <code>Format</code> instance.
- *
- * @param format Format used to dictate legal values
- */
- public DateFormatter(DateFormat format) {
- super(format);
- setFormat(format);
- }
-
- /**
- * Sets the format that dictates the legal values that can be edited
- * and displayed.
- * <p>
- * If you have used the nullary constructor the value of this property
- * will be determined for the current locale by way of the
- * <code>Dateformat.getDateInstance()</code> method.
- *
- * @param format DateFormat instance used for converting from/to Strings
- */
- public void setFormat(DateFormat format) {
- super.setFormat(format);
- }
-
- /**
- * Returns the Calendar that <code>DateFormat</code> is associated with,
- * or if the <code>Format</code> is not a <code>DateFormat</code>
- * <code>Calendar.getInstance</code> is returned.
- */
- private Calendar getCalendar() {
- Format f = getFormat();
-
- if (f instanceof DateFormat) {
- return ((DateFormat)f).getCalendar();
- }
- return Calendar.getInstance();
- }
-
-
- /**
- * Returns true, as DateFormatterFilter will support
- * incrementing/decrementing of the value.
- */
- boolean getSupportsIncrement() {
- return true;
- }
-
- /**
- * Returns the field that will be adjusted by adjustValue.
- */
- Object getAdjustField(int start, Map attributes) {
- Iterator attrs = attributes.keySet().iterator();
-
- while (attrs.hasNext()) {
- Object key = attrs.next();
-
- if ((key instanceof DateFormat.Field) &&
- (key == DateFormat.Field.HOUR1 ||
- ((DateFormat.Field)key).getCalendarField() != -1)) {
- return key;
- }
- }
- return null;
- }
-
- /**
- * Adjusts the Date if FieldPosition identifies a known calendar
- * field.
- */
- Object adjustValue(Object value, Map attributes, Object key,
- int direction) throws
- BadLocationException, ParseException {
- if (key != null) {
- int field;
-
- // HOUR1 has no corresponding calendar field, thus, map
- // it to HOUR0 which will give the correct behavior.
- if (key == DateFormat.Field.HOUR1) {
- key = DateFormat.Field.HOUR0;
- }
- field = ((DateFormat.Field)key).getCalendarField();
-
- Calendar calendar = getCalendar();
-
- if (calendar != null) {
- calendar.setTime((Date)value);
-
- int fieldValue = calendar.get(field);
-
- try {
- calendar.add(field, direction);
- value = calendar.getTime();
- } catch (Throwable th) {
- value = null;
- }
- return value;
- }
- }
- return null;
- }
- }