API Overview API Index Package Overview Direct link to this page
JDK 1.6
  javax.swing.text. DateFormatter View Javadoc
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143

/*
 * @(#)DateFormatter.java	1.11 05/11/17
 *
 * Copyright 2006 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;
    }
}

Generated By: JavaOnTracks Doclet 0.1.4     ©Thibaut Colar