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| -rw-r--r-- | include/comphelper/property.hxx | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/include/comphelper/property.hxx b/include/comphelper/property.hxx new file mode 100644 index 000000000..b9787f130 --- /dev/null +++ b/include/comphelper/property.hxx @@ -0,0 +1,131 @@ +/* -*- 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 INCLUDED_COMPHELPER_PROPERTY_HXX +#define INCLUDED_COMPHELPER_PROPERTY_HXX + +#include <cppuhelper/proptypehlp.hxx> +#include <comphelper/extract.hxx> +#include <com/sun/star/beans/Property.hpp> +#include <type_traits> +#include <comphelper/comphelperdllapi.h> + +namespace com::sun::star::beans { class XPropertySet; } + +namespace comphelper +{ + + // comparing two property instances + struct PropertyCompareByName + { + bool operator() (const css::beans::Property& x, const css::beans::Property& y) const + { + return x.Name.compareTo(y.Name) < 0; + } + }; + +/// remove the property with the given name from the given sequence +COMPHELPER_DLLPUBLIC void RemoveProperty(css::uno::Sequence<css::beans::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(css::uno::Sequence<css::beans::Property>& _rProps, const OUString& _sPropName, sal_Int16 _nAddAttrib, sal_Int16 _nRemoveAttrib); + +/** check if the given set has the given property. +*/ +COMPHELPER_DLLPUBLIC bool hasProperty(const OUString& _rName, const css::uno::Reference<css::beans::XPropertySet>& _rxSet); + +/** copy properties between property sets, in compliance with the property + attributes of the target object +*/ +COMPHELPER_DLLPUBLIC void copyProperties(const css::uno::Reference<css::beans::XPropertySet>& _rxSource, + const css::uno::Reference<css::beans::XPropertySet>& _rxDest); + +/** 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> +bool tryPropertyValue(css::uno::Any& /*out*/_rConvertedValue, css::uno::Any& /*out*/_rOldValue, const css::uno::Any& _rValueToSet, const T& _rCurrentValue) +{ + bool bModified(false); + T aNewValue = T(); + ::cppu::convertPropertyValue(aNewValue, _rValueToSet); + if (aNewValue != _rCurrentValue) + { + _rConvertedValue <<= aNewValue; + _rOldValue <<= _rCurrentValue; + bModified = 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> +typename std::enable_if<std::is_enum<ENUMTYPE>::value, bool>::type +tryPropertyValueEnum(css::uno::Any& /*out*/_rConvertedValue, css::uno::Any& /*out*/_rOldValue, const css::uno::Any& _rValueToSet, const ENUMTYPE& _rCurrentValue) +{ + bool bModified(false); + ENUMTYPE aNewValue; + ::cppu::any2enum(aNewValue, _rValueToSet); + // will throw an exception if not convertible + + if (aNewValue != _rCurrentValue) + { + _rConvertedValue <<= aNewValue; + _rOldValue <<= _rCurrentValue; + bModified = 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 bool tryPropertyValue(css::uno::Any& _rConvertedValue, css::uno::Any& _rOldValue, const css::uno::Any& _rValueToSet, const css::uno::Any& _rCurrentValue, const css::uno::Type& _rExpectedType); + +} + +#endif // INCLUDED_COMPHELPER_PROPERTY_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |