Mercurial > projects > dwt2
annotate org.eclipse.core.databinding/src/org/eclipse/core/internal/databinding/conversion/NumberToNumberConverter.d @ 88:9e0ab372d5d8
Revert from TypeInfo/ClassInfo to java.lang.Class
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sun, 19 Apr 2009 11:10:09 +0200 |
| parents | 6be48cf9f95c |
| children |
| rev | line source |
|---|---|
| 78 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2007 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 ******************************************************************************/ | |
| 11 | |
| 12 module org.eclipse.core.internal.databinding.conversion.NumberToNumberConverter; | |
| 81 | 13 import org.eclipse.core.internal.databinding.conversion.StringToNumberParser; |
| 78 | 14 |
| 15 import java.lang.all; | |
| 16 | |
| 17 import org.eclipse.core.databinding.conversion.Converter; | |
| 18 | |
| 19 import com.ibm.icu.text.NumberFormat; | |
| 20 | |
| 21 /** | |
| 22 * Base class for number to number converters. | |
| 23 * <p> | |
| 24 * This class is thread safe. | |
| 25 * </p> | |
| 26 * | |
| 27 * @since 1.0 | |
| 28 */ | |
| 29 public abstract class NumberToNumberConverter : Converter { | |
| 30 private NumberFormat numberFormat; | |
| 31 | |
| 32 private bool primitive; | |
| 33 | |
| 34 private String outOfRangeMessage; | |
| 35 | |
| 36 protected this(NumberFormat numberFormat, | |
|
88
9e0ab372d5d8
Revert from TypeInfo/ClassInfo to java.lang.Class
Frank Benoit <benoit@tionex.de>
parents:
85
diff
changeset
|
37 Class fromType, Class toType) { |
| 78 | 38 super(fromType, toType); |
| 39 this.numberFormat = numberFormat; | |
|
88
9e0ab372d5d8
Revert from TypeInfo/ClassInfo to java.lang.Class
Frank Benoit <benoit@tionex.de>
parents:
85
diff
changeset
|
40 this.primitive = toType.isPrimitive(); |
| 78 | 41 } |
| 42 | |
| 43 /* | |
| 44 * (non-Javadoc) | |
| 45 * | |
| 46 * @see org.eclipse.core.databinding.conversion.IConverter#convert(java.lang.Object) | |
| 47 */ | |
| 85 | 48 // DWT not final, need to override to reimplement interface IConvert |
| 49 public /+final+/ Object convert(Object fromObject) { | |
| 78 | 50 if (fromObject is null) { |
| 51 if (primitive) { | |
| 52 throw new IllegalArgumentException( | |
| 53 "Parameter 'fromObject' cannot be null."); //$NON-NLS-1$ | |
| 54 } | |
| 55 | |
| 56 return null; | |
| 57 } | |
| 58 | |
| 59 if (!( null !is cast(Number)fromObject )) { | |
| 60 throw new IllegalArgumentException( | |
| 61 "Parameter 'fromObject' must be of type Number."); //$NON-NLS-1$ | |
| 62 } | |
| 63 | |
| 64 Number number = cast(Number) fromObject; | |
| 65 Number result = doConvert(number); | |
| 66 | |
| 67 if (result !is null) { | |
| 68 return result; | |
| 69 } | |
| 70 | |
| 71 synchronized (this) { | |
| 72 if (outOfRangeMessage is null) { | |
| 73 outOfRangeMessage = StringToNumberParser | |
| 85 | 74 .createOutOfRangeMessage(new Short(Short.MIN_VALUE), |
| 75 new Short(Short.MAX_VALUE), numberFormat); | |
| 78 | 76 } |
| 77 | |
| 78 throw new IllegalArgumentException(outOfRangeMessage); | |
| 79 } | |
| 80 } | |
| 81 | |
| 82 /** | |
| 83 * Invoked when the number should converted. | |
| 84 * | |
| 85 * @param number | |
| 86 * @return number if conversion was successfule, <code>null</code> if the | |
| 87 * number was out of range | |
| 88 */ | |
| 89 protected abstract Number doConvert(Number number); | |
| 90 | |
| 91 /** | |
| 92 * NumberFormat being used by the converter. Access to the format must be | |
| 93 * synchronized on the number format instance. | |
| 94 * | |
| 95 * @return number format | |
| 96 */ | |
| 97 public NumberFormat getNumberFormat() { | |
| 98 return numberFormat; | |
| 99 } | |
| 100 } |