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Diffstat (limited to 'include/comphelper/property.hxx')
| -rw-r--r-- | include/comphelper/property.hxx | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/include/comphelper/property.hxx b/include/comphelper/property.hxx new file mode 100644 index 000000000000..95fe122d51a6 --- /dev/null +++ b/include/comphelper/property.hxx @@ -0,0 +1,205 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * 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 . + */ + +#ifndef _COMPHELPER_PROPERTY_HXX_ +#define _COMPHELPER_PROPERTY_HXX_ + +#include <cppuhelper/proptypehlp.hxx> +#include <comphelper/extract.hxx> +#include <com/sun/star/beans/Property.hpp> +#include <com/sun/star/beans/XPropertySet.hpp> +#include <functional> +#include "comphelper/comphelperdllapi.h" +#include "cppu/unotype.hxx" + +//========================================================================= +//= property helper classes +//========================================================================= + +//... namespace comphelper ....................................................... +namespace comphelper +{ +//......................................................................... + + namespace starbeans = ::com::sun::star::beans; + namespace staruno = ::com::sun::star::uno; + +/** compare two properties by name +*/ + //-------------------------------------------------------------------------- + // comparing two property instances + struct PropertyCompareByName : public ::std::binary_function< ::com::sun::star::beans::Property, ::com::sun::star::beans::Property, bool > + { + bool operator() (const ::com::sun::star::beans::Property& x, const ::com::sun::star::beans::Property& y) const + { + return x.Name.compareTo(y.Name) < 0;// ? true : false; + } + }; + + //-------------------------------------------------------------------------- + /** compare two properties by name + */ + struct PropertyStringEqualFunctor : ::std::binary_function< ::com::sun::star::beans::Property, OUString, bool > + { + // ................................................................ + inline bool operator()( const ::com::sun::star::beans::Property& lhs, const OUString& rhs ) const + { + return lhs.Name == rhs ; + } + // ................................................................ + inline bool operator()( const OUString& lhs, const ::com::sun::star::beans::Property& rhs ) const + { + return lhs == rhs.Name ; + } + }; + //-------------------------------------------------------------------------- + // comparing two property instances + struct PropertyEqualByName : public ::std::binary_function< ::com::sun::star::beans::Property, ::com::sun::star::beans::Property, bool > + { + bool operator() (const ::com::sun::star::beans::Property& x, const ::com::sun::star::beans::Property& y) const + { + return x.Name == y.Name ; + } + }; + +//------------------------------------------------------------------ +/// remove the property with the given name from the given sequence +COMPHELPER_DLLPUBLIC void RemoveProperty(staruno::Sequence<starbeans::Property>& seqProps, const OUString& _rPropName); + +//------------------------------------------------------------------ +/** within the given property sequence, modify attributes of a special property + @param _rProps the sequence of properties to search in + @param _sPropName the name of the property which's attributes should be modified + @param _nAddAttrib the attributes which should be added + @param _nRemoveAttrib the attributes which should be removed +*/ +COMPHELPER_DLLPUBLIC void ModifyPropertyAttributes(staruno::Sequence<starbeans::Property>& _rProps, const OUString& _sPropName, sal_Int16 _nAddAttrib, sal_Int16 _nRemoveAttrib); + +//------------------------------------------------------------------ +/** check if the given set has the given property. +*/ +COMPHELPER_DLLPUBLIC sal_Bool hasProperty(const OUString& _rName, const staruno::Reference<starbeans::XPropertySet>& _rxSet); + +//------------------------------------------------------------------ +/** copy properties between property sets, in compliance with the property + attributes of the target object +*/ +COMPHELPER_DLLPUBLIC void copyProperties(const staruno::Reference<starbeans::XPropertySet>& _rxSource, + const staruno::Reference<starbeans::XPropertySet>& _rxDest); + +//================================================================== +//= property conversion helpers +//================================================================== + +/** helper for implementing ::cppu::OPropertySetHelper::convertFastPropertyValue + @param _rConvertedValue the conversion result (if successful) + @param _rOldValue the old value of the property, calculated from _rCurrentValue + @param _rValueToSet the new value which is about to be set + @param _rCurrentValue the current value of the property + @return sal_True, if the value could be converted and has changed + sal_False, if the value could be converted and has not changed + @exception InvalidArgumentException thrown if the value could not be converted to the requested type (which is the template argument) +*/ +template <typename T> +sal_Bool tryPropertyValue(staruno::Any& /*out*/_rConvertedValue, staruno::Any& /*out*/_rOldValue, const staruno::Any& _rValueToSet, const T& _rCurrentValue) +{ + sal_Bool bModified(sal_False); + T aNewValue = T(); + ::cppu::convertPropertyValue(aNewValue, _rValueToSet); + if (aNewValue != _rCurrentValue) + { + _rConvertedValue <<= aNewValue; + _rOldValue <<= _rCurrentValue; + bModified = sal_True; + } + return bModified; +} + +/** helper for implementing ::cppu::OPropertySetHelper::convertFastPropertyValue for enum values + @param _rConvertedValue the conversion result (if successful) + @param _rOldValue the old value of the property, calculated from _rCurrentValue + @param _rValueToSet the new value which is about to be set + @param _rCurrentValue the current value of the property + @return sal_True, if the value could be converted and has changed + sal_False, if the value could be converted and has not changed + @exception InvalidArgumentException thrown if the value could not be converted to the requested type (which is the template argument) +*/ +template <class ENUMTYPE> +sal_Bool tryPropertyValueEnum(staruno::Any& /*out*/_rConvertedValue, staruno::Any& /*out*/_rOldValue, const staruno::Any& _rValueToSet, const ENUMTYPE& _rCurrentValue) +{ + if (cppu::getTypeFavourUnsigned(&_rCurrentValue).getTypeClass() + != staruno::TypeClass_ENUM) + return tryPropertyValue(_rConvertedValue, _rOldValue, _rValueToSet, _rCurrentValue); + + sal_Bool bModified(sal_False); + ENUMTYPE aNewValue; + ::cppu::any2enum(aNewValue, _rValueToSet); + // will throw an exception if not convertible + + if (aNewValue != _rCurrentValue) + { + _rConvertedValue <<= aNewValue; + _rOldValue <<= _rCurrentValue; + bModified = sal_True; + } + return bModified; +} + +/** helper for implementing ::cppu::OPropertySetHelper::convertFastPropertyValue for boolean properties + @param _rConvertedValue the conversion result (if successful) + @param _rOldValue the old value of the property, calculated from _rCurrentValue + @param _rValueToSet the new value which is about to be set + @param _rCurrentValue the current value of the property + @return sal_True, if the value could be converted and has changed + sal_False, if the value could be converted and has not changed + @exception InvalidArgumentException thrown if the value could not be converted to a boolean type +*/ +inline sal_Bool tryPropertyValue(staruno::Any& /*out*/_rConvertedValue, staruno::Any& /*out*/_rOldValue, const staruno::Any& _rValueToSet, sal_Bool _bCurrentValue) +{ + sal_Bool bModified(sal_False); + sal_Bool bNewValue(sal_False); + ::cppu::convertPropertyValue(bNewValue, _rValueToSet); + if (bNewValue != _bCurrentValue) + { + _rConvertedValue.setValue(&bNewValue, ::getBooleanCppuType()); + _rOldValue.setValue(&_bCurrentValue, ::getBooleanCppuType()); + bModified = sal_True; + } + return bModified; +} + +/** helper for implementing ::cppu::OPropertySetHelper::convertFastPropertyValue + @param _rConvertedValue the conversion result (if successful) + @param _rOldValue the old value of the property, calculated from _rCurrentValue + @param _rValueToSet the new value which is about to be set + @param _rCurrentValue the current value of the property + @param _rExpectedType the type which the property should have (if not void) + @return sal_True, if the value could be converted and has changed + sal_False, if the value could be converted and has not changed + @exception InvalidArgumentException thrown if the value could not be converted to the requested type (which is the template argument) +*/ +COMPHELPER_DLLPUBLIC sal_Bool tryPropertyValue(staruno::Any& _rConvertedValue, staruno::Any& _rOldValue, const staruno::Any& _rValueToSet, const staruno::Any& _rCurrentValue, const staruno::Type& _rExpectedType); + +//......................................................................... +} +//... namespace comphelper ....................................................... + +#endif // _COMPHELPER_PROPERTY_HXX_ + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |