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comparison org.eclipse.core.databinding/src/org/eclipse/core/internal/databinding/validation/StringToDateValidator.d @ 78:0a55d2d5a946

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Added file for databinding
author Frank Benoit <benoit@tionex.de>
date Tue, 14 Apr 2009 11:35:29 +0200
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76:f05e6e8b2f2d 78:0a55d2d5a946
1 /*******************************************************************************
2 * Copyright (c) 2007, 2008 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 * Tom Schindl<tom.schindl@bestsolution.at> - bugfix for 217940
11 *******************************************************************************/
12
13 module org.eclipse.core.internal.databinding.validation.StringToDateValidator;
14
15 import java.lang.all;
16
17 import java.util.Date;
18
19 import org.eclipse.core.databinding.validation.IValidator;
20 import org.eclipse.core.databinding.validation.ValidationStatus;
21 import org.eclipse.core.internal.databinding.BindingMessages;
22 import org.eclipse.core.internal.databinding.conversion.DateConversionSupport;
23 import org.eclipse.core.internal.databinding.conversion.StringToDateConverter;
24 import org.eclipse.core.runtime.IStatus;
25 import org.eclipse.core.runtime.Status;
26
27 /**
28 * @since 1.0
29 */
30 public class StringToDateValidator : IValidator {
31 private final StringToDateConverter converter;
32
33 /**
34 * @param converter
35 */
36 public this(StringToDateConverter converter) {
37 this.converter = converter;
38 }
39
40 /*
41 * (non-Javadoc)
42 *
43 * @see org.eclipse.core.databinding.validation.IValidator#validate(java.lang.Object)
44 */
45 public IStatus validate(Object value) {
46 if ( null !is cast(String )value && (cast(String)value).trim().length() is 0) {
47 return Status.OK_STATUS;
48 }
49 Object convertedValue = converter.convert(value);
50 //The StringToDateConverter returns null if it can't parse the date.
51 if (convertedValue is null) {
52 return ValidationStatus.error(getErrorMessage());
53 }
54
55 return Status.OK_STATUS;
56 }
57
58 /*
59 * (non-Javadoc)
60 *
61 * @see org.eclipse.core.internal.databinding.validation.WrappedConverterValidator#getErrorMessage()
62 */
63 protected String getErrorMessage() {
64 Date sampleDate = new Date();
65
66 // FIXME We need to use the information from the
67 // converter, not use another instance of DateConversionSupport.
68 FormatUtil util = new FormatUtil();
69 StringBuffer samples = new StringBuffer();
70 for (int formatterIdx = 1; formatterIdx < util.numFormatters() - 2; formatterIdx++) {
71 samples.append('\'');
72 samples.append(util.format(sampleDate, formatterIdx));
73 samples.append("', "); //$NON-NLS-1$
74 }
75 samples.append('\'');
76 samples.append(util.format(sampleDate, 0));
77 samples.append('\'');
78 return BindingMessages.getStringcast(BindingMessages.EXAMPLES) + ": " + samples + ",..."; //$NON-NLS-1$//$NON-NLS-2$
79 }
80
81 private static class FormatUtil : DateConversionSupport {
82 /*
83 * (non-Javadoc)
84 *
85 * @see org.eclipse.core.internal.databinding.conversion.DateConversionSupport#numFormatters()
86 */
87 protected int numFormatters() {
88 return super.numFormatters();
89 }
90
91 /*
92 * (non-Javadoc)
93 *
94 * @see org.eclipse.core.internal.databinding.conversion.DateConversionSupport#format(java.util.Date)
95 */
96 protected String format(Date date) {
97 return super.format(date);
98 }
99
100 /*
101 * (non-Javadoc)
102 *
103 * @see org.eclipse.core.internal.databinding.conversion.DateConversionSupport#format(java.util.Date,
104 * int)
105 */
106 protected String format(Date date, int formatterIdx) {
107 return super.format(date, formatterIdx);
108 }
109 }
110 }