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1 /*******************************************************************************
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2 * Copyright (c) 2007 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 ******************************************************************************/
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11
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12 module org.eclipse.core.internal.databinding.conversion.IntegerToStringConverter;
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13
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14 import java.lang.all;
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15
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16 import org.eclipse.core.databinding.conversion.Converter;
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17
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18 import com.ibm.icu.text.NumberFormat;
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19
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20 /**
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21 * Converts a value that is an integer, non decimal, to a String using a
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22 * NumberFormat.
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23 * <p>
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24 * This class is a temporary as this ability exists in NumberToStringConverter
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25 * except that short and byte are missing.
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26 * </p>
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27 *
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28 * @since 1.0
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29 */
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30 public class IntegerToStringConverter : Converter {
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31 private final bool primitive;
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32 private final NumberFormat numberFormat;
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33 private final ClassInfo boxedType;
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34
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35 /**
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36 * @param numberFormat
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37 * @param fromType
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38 * @param boxedType
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39 */
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40 private this(NumberFormat numberFormat, ClassInfo fromType,
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41 ClassInfo boxedType) {
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42 super(fromType, String.classinfo);
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43 this.primitive = fromType.isPrimitive();
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44 this.numberFormat = numberFormat;
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45 this.boxedType = boxedType;
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46 }
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47
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48 /*
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49 * (non-Javadoc)
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50 *
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51 * @see org.eclipse.core.databinding.conversion.IConverter#convert(java.lang.Object)
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52 */
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53 public Object convert(Object fromObject) {
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54 // Null is allowed when the type is not primitve.
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55 if (fromObject is null && !primitive) {
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56 return ""; //$NON-NLS-1$
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57 }
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58
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59 if (!boxedType.isInstance(fromObject)) {
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60 throw new IllegalArgumentException(
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61 "'fromObject' is not of type [" + boxedType + "]."); //$NON-NLS-1$//$NON-NLS-2$
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62 }
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63
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64 return numberFormat.format((cast(Number) fromObject).longValue());
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65 }
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66
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67 /**
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68 * @param primitive
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69 * @return converter
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70 */
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71 public static IntegerToStringConverter fromShort(bool primitive) {
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72 return fromShort(NumberFormat.getIntegerInstance(), primitive);
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73 }
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74
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75 /**
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76 * @param numberFormat
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77 * @param primitive
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78 * @return converter
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79 */
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80 public static IntegerToStringConverter fromShort(NumberFormat numberFormat,
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81 bool primitive) {
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82 return new IntegerToStringConverter(numberFormat,
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83 primitive ? Short.TYPE : Short.classinfo, Short.classinfo);
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84 }
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85
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86 /**
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87 * @param primitive
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88 * @return converter
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89 */
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90 public static IntegerToStringConverter fromByte(bool primitive) {
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91 return fromByte(NumberFormat.getIntegerInstance(), primitive);
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92 }
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93
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94 /**
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95 * @param numberFormat
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96 * @param primitive
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97 * @return converter
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98 */
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99 public static IntegerToStringConverter fromByte(NumberFormat numberFormat,
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100 bool primitive) {
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101 return new IntegerToStringConverter(numberFormat, primitive ? Byte.TYPE
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102 : Byte.classinfo, Byte.classinfo);
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103 }
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104 }
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