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Diffstat (limited to 'wizards/com/sun/star/wizards/common/NumericalHelper.java')
| -rw-r--r-- | wizards/com/sun/star/wizards/common/NumericalHelper.java | 353 |
1 files changed, 353 insertions, 0 deletions
diff --git a/wizards/com/sun/star/wizards/common/NumericalHelper.java b/wizards/com/sun/star/wizards/common/NumericalHelper.java new file mode 100644 index 000000000..af74704df --- /dev/null +++ b/wizards/com/sun/star/wizards/common/NumericalHelper.java @@ -0,0 +1,353 @@ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ +package com.sun.star.wizards.common; + +import com.sun.star.uno.AnyConverter; +import com.sun.star.uno.TypeClass; + +/** + * A class for helping with all kinds of numerical conversions. + * Optional or named parameters in SO are of the Object type in Java. + * These objects must be converted to the right simple value type. + * Unfortunately, StarBasic does not know the original desired type, + * and a value that should be a "Float" is delivered as "Byte". This class + * handles the conversions of these types.<br> + * This class does not log warnings (or throws Exceptions) when the precision + * of a value is lost. + */ +public class NumericalHelper +{ + + private static final int BYTE_TYPE = 0; + private static final int SHORT_TYPE = 1; + private static final int INT_TYPE = 2; + private static final int LONG_TYPE = 3; + private static final int FLOAT_TYPE = 4; + private static final int DOUBLE_TYPE = 5; + private static final int CHAR_TYPE = 6; + private static final int STRING_TYPE = -1; + private static final int BOOLEAN_TYPE = -2; + private static final int SEQUENCE_TYPE = -3; + + /** + * private c'tor to prevent instantiation + */ + private NumericalHelper() + { + // private c'tor, so no one can instantiate + } + + + + /** + * get an int value from the object + * @throws com.sun.star.lang.IllegalArgumentException if the object cannot be converted + */ + public static int toInt(Object aValue) + throws com.sun.star.lang.IllegalArgumentException + { + int retValue = 0; + TypeObject aTypeObject = getTypeObject(aValue); + switch (aTypeObject.iType) + { + case BYTE_TYPE: + retValue = getByte(aTypeObject); + break; + case CHAR_TYPE: + retValue = getChar(aTypeObject); + break; + case SHORT_TYPE: + retValue = getShort(aTypeObject); + break; + case INT_TYPE: + retValue = getInt(aTypeObject); + break; + case LONG_TYPE: + retValue = (int) getLong(aTypeObject); + break; + case FLOAT_TYPE: + retValue = (int) getFloat(aTypeObject); + break; + case DOUBLE_TYPE: + retValue = (int) getDouble(aTypeObject); + break; + case STRING_TYPE: + try + { + retValue = Integer.parseInt((String) aTypeObject.aValue); + } + catch (java.lang.NumberFormatException e) + { + throw new com.sun.star.lang.IllegalArgumentException(e, + "Cannot convert to int: " + aTypeObject.aValue); + } + break; + case BOOLEAN_TYPE: + retValue = getBool(aTypeObject) ? -1 : 0; + break; + default: + throw new com.sun.star.lang.IllegalArgumentException( + "Cannot convert this type: " + aValue.getClass().getName()); + } + return retValue; + } + + /** + * get a double value from the object + * @throws com.sun.star.lang.IllegalArgumentException if the object cannot be converted + */ + public static double toDouble(Object aValue) + throws com.sun.star.lang.IllegalArgumentException + { + double retValue = 0.0; + TypeObject aTypeObject = getTypeObject(aValue); + switch (aTypeObject.iType) + { + case BYTE_TYPE: + retValue = getByte(aTypeObject); + break; + case CHAR_TYPE: + retValue = getChar(aTypeObject); + break; + case SHORT_TYPE: + retValue = getShort(aTypeObject); + break; + case INT_TYPE: + retValue = getInt(aTypeObject); + break; + case LONG_TYPE: + retValue = getLong(aTypeObject); + break; + case FLOAT_TYPE: + retValue = getFloat(aTypeObject); + break; + case DOUBLE_TYPE: + retValue = getDouble(aTypeObject); + break; + case STRING_TYPE: + try + { + retValue = Float.parseFloat((String) aTypeObject.aValue); + } + catch (java.lang.NumberFormatException e) + { + throw new com.sun.star.lang.IllegalArgumentException(e, + "Cannot convert to short: " + aTypeObject.aValue); + } + break; + case BOOLEAN_TYPE: + retValue = getBool(aTypeObject) ? (double) -1 : (double) 0; + break; + default: + throw new com.sun.star.lang.IllegalArgumentException( + "Cannot convert this type: " + aValue.getClass().getName()); + } + return retValue; + } + + /** + * get the type object from the given object + * @param aValue an object representing a (numerical) value; can also be an 'any' + * @return a type object: the object together with the its type information + * @throws com.sun.star.lang.IllegalArgumentException if the object is unknown + */ + private static TypeObject getTypeObject(Object aValue) + throws com.sun.star.lang.IllegalArgumentException + { + TypeObject aTypeObject = new TypeObject(); + if (aValue == null || AnyConverter.isVoid(aValue)) + { + throw new com.sun.star.lang.IllegalArgumentException("Cannot convert a null object."); + } + int type = AnyConverter.getType(aValue).getTypeClass().getValue(); + switch (type) + { + case TypeClass.CHAR_value: + aTypeObject.iType = CHAR_TYPE; + aTypeObject.aValue = new Character(AnyConverter.toChar(aValue)); + break; + case TypeClass.BYTE_value: + aTypeObject.iType = BYTE_TYPE; + aTypeObject.aValue = Byte.valueOf(AnyConverter.toByte(aValue)); + break; + case TypeClass.SHORT_value: + aTypeObject.iType = SHORT_TYPE; + aTypeObject.aValue = Short.valueOf(AnyConverter.toShort(aValue)); + break; + case TypeClass.LONG_value: + aTypeObject.iType = INT_TYPE; + aTypeObject.aValue = Integer.valueOf(AnyConverter.toInt(aValue)); + break; + case TypeClass.HYPER_value: + aTypeObject.iType = LONG_TYPE; + aTypeObject.aValue = Long.valueOf(AnyConverter.toLong(aValue)); + break; + case TypeClass.FLOAT_value: + aTypeObject.iType = FLOAT_TYPE; + aTypeObject.aValue = new Float(AnyConverter.toFloat(aValue)); + break; + case TypeClass.DOUBLE_value: + aTypeObject.iType = DOUBLE_TYPE; + aTypeObject.aValue = new Double(AnyConverter.toDouble(aValue)); + break; + case TypeClass.STRING_value: + aTypeObject.iType = STRING_TYPE; + aTypeObject.aValue = AnyConverter.toString(aValue); + break; + case TypeClass.BOOLEAN_value: + aTypeObject.iType = BOOLEAN_TYPE; + aTypeObject.aValue = Boolean.valueOf(AnyConverter.toBoolean(aValue)); + break; + case TypeClass.SEQUENCE_value: + aTypeObject.iType = SEQUENCE_TYPE; + aTypeObject.aValue = aValue; + break; + default: + throw new com.sun.star.lang.IllegalArgumentException( + "Cannot convert this type: " + aValue.getClass().getName()); + } + return aTypeObject; + } + + /** + * get the simple byte type + */ + private static byte getByte(TypeObject typeObject) + throws com.sun.star.lang.IllegalArgumentException + { + if (typeObject.iType != BYTE_TYPE) + { + throw new com.sun.star.lang.IllegalArgumentException( + "Given argument is not a byte type."); + } + return ((Byte) typeObject.aValue).byteValue(); + } + + /** + * get the simple char type + */ + private static char getChar(TypeObject typeObject) + throws com.sun.star.lang.IllegalArgumentException + { + if (typeObject.iType != CHAR_TYPE) + { + throw new com.sun.star.lang.IllegalArgumentException( + "Given argument is not a char type."); + } + return ((Character) typeObject.aValue).charValue(); + } + + /** + * get the simple short type + */ + private static short getShort(TypeObject typeObject) + throws com.sun.star.lang.IllegalArgumentException + { + if (typeObject.iType != SHORT_TYPE) + { + throw new com.sun.star.lang.IllegalArgumentException( + "Given argument is not a short type."); + } + return ((Short) typeObject.aValue).shortValue(); + } + + /** + * get the simple int type + * @param typeObject + * @return + * @throws com.sun.star.lang.IllegalArgumentException + */ + private static int getInt(TypeObject typeObject) + throws com.sun.star.lang.IllegalArgumentException + { + if (typeObject.iType != INT_TYPE) + { + throw new com.sun.star.lang.IllegalArgumentException( + "Given argument is not an int type."); + } + return ((Integer) typeObject.aValue).intValue(); + } + + /** + * get the simple float type + * @throws com.sun.star.lang.IllegalArgumentException + */ + private static float getFloat(TypeObject typeObject) + throws com.sun.star.lang.IllegalArgumentException + { + if (typeObject.iType != FLOAT_TYPE) + { + throw new com.sun.star.lang.IllegalArgumentException( + "Given argument is not a float type."); + } + return ((Float) typeObject.aValue).floatValue(); + } + + /** + * get the simple double type + */ + private static double getDouble(TypeObject typeObject) + throws com.sun.star.lang.IllegalArgumentException + { + if (typeObject.iType != DOUBLE_TYPE) + { + throw new com.sun.star.lang.IllegalArgumentException( + "Given argument is not a double type."); + } + return ((Double) typeObject.aValue).doubleValue(); + } + + /** + * get the simple long type + */ + private static long getLong(TypeObject typeObject) + throws com.sun.star.lang.IllegalArgumentException + { + if (typeObject.iType != LONG_TYPE) + { + throw new com.sun.star.lang.IllegalArgumentException( + "Given argument is not a long type."); + } + return ((Long) typeObject.aValue).longValue(); + } + + /** + * get the simple boolean type + */ + private static boolean getBool(TypeObject typeObject) + throws com.sun.star.lang.IllegalArgumentException + { + if (typeObject.iType != BOOLEAN_TYPE) + { + throw new com.sun.star.lang.IllegalArgumentException( + "Given argument is not a boolean type."); + } + return ((Boolean) typeObject.aValue).booleanValue(); + } + + /** + * a class to contain a type and a value for easier conversions + */ + private static class TypeObject + { + + public int iType; + public Object aValue; + } + +} |