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| -rw-r--r-- | include/comphelper/namedvaluecollection.hxx | 322 |
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diff --git a/include/comphelper/namedvaluecollection.hxx b/include/comphelper/namedvaluecollection.hxx new file mode 100644 index 0000000000..b92646e40a --- /dev/null +++ b/include/comphelper/namedvaluecollection.hxx @@ -0,0 +1,322 @@ +/* -*- 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_NAMEDVALUECOLLECTION_HXX +#define INCLUDED_COMPHELPER_NAMEDVALUECOLLECTION_HXX + +#include <comphelper/comphelperdllapi.h> + +#include <com/sun/star/uno/Sequence.hxx> +#include <com/sun/star/uno/Any.hxx> +#include <com/sun/star/beans/PropertyValue.hpp> +#include <com/sun/star/beans/NamedValue.hpp> + +#include <vector> +#include <unordered_map> + +namespace comphelper +{ + + + // = NamedValueCollection + + /** a collection of named values, packed in various formats. + */ + class COMPHELPER_DLLPUBLIC NamedValueCollection + { + std::unordered_map< OUString, css::uno::Any > maValues; + public: + NamedValueCollection() = default; + + NamedValueCollection( const NamedValueCollection& _rCopySource ) = default; + NamedValueCollection(NamedValueCollection&& _rCopySource) noexcept = default; + + NamedValueCollection& operator=( const NamedValueCollection& i_rCopySource ) = default; + NamedValueCollection& operator=(NamedValueCollection&& i_rCopySource) noexcept = default; + + /** constructs a collection + @param _rElements + the wrapped elements of the collection. The @c Any might contain a sequence of + property values, a sequence of named values, or directly a property value or named value. + All other cases are worth an assertion in non-product builds. + */ + NamedValueCollection( const css::uno::Any& _rElements ); + + /** constructs a collection + @param _rArguments + a sequence of Any's containing either PropertyValue's or NamedValue's. + */ + NamedValueCollection( const css::uno::Sequence< css::uno::Any >& _rArguments ); + + /** constructs a collection + @param _rArguments + a sequence of PropertyValues's + */ + NamedValueCollection( const css::uno::Sequence< css::beans::PropertyValue >& _rArguments ); + + /** constructs a collection + @param _rArguments + a sequence of NamedValue's + */ + NamedValueCollection( const css::uno::Sequence< css::beans::NamedValue >& _rArguments ); + + void assign( const css::uno::Sequence< css::uno::Any >& _rArguments ) + { + impl_assign( _rArguments ); + } + + void clear() + { + impl_assign( css::uno::Sequence< css::beans::NamedValue >() ); + } + + /** determines whether or not named values can be extracted from the given value + + @return + true if and only if the given @c Any contains a @c NamedValue, a + @c PropertyValue, or a sequence thereof. + */ + static bool canExtractFrom( css::uno::Any const & i_value ); + + /// returns the number of elements in the collection + size_t size() const; + + /// determines whether the collection is empty + bool empty() const; + + /** returns the names of all elements in the collection + */ + ::std::vector< OUString > + getNames() const; + + /** merges the content of another collection into @c this + @param _rAdditionalValues + the collection whose values are to be merged + @param _bOverwriteExisting + defines whether or not elements which are already present in @c this + should be overwritten (true) or preserved (false). + @return @c *this + */ + NamedValueCollection& + merge( + const NamedValueCollection& _rAdditionalValues, + bool _bOverwriteExisting + ); + + /** retrieves a value with a given name from the collection, if it is present + + @param _pAsciiValueName + the ASCII name of the value to retrieve + + @param _out_rValue + is the output parameter taking the desired value upon successful return. If + a value with the given name is not present in the collection, or if a wrong-typed + value is present, then this parameter will not be touched. + + @retval + true if there is a value with the given name, which could successfully + be extracted. In this case, @c _out_rValue will contain the requested + value. + @retval + false, if there is no value with the given name. + + @throws IllegalArgumentException + in case there is a value with the given name, but it cannot legally assigned to + _out_rValue. + */ + template < typename VALUE_TYPE > + bool get_ensureType( const OUString& _rValueName, VALUE_TYPE& _out_rValue ) const + { + return get_ensureType( _rValueName, &_out_rValue, ::cppu::UnoType< VALUE_TYPE >::get() ); + } + + /** retrieves a value with a given name, or defaults it to a given value, if it's not present + in the collection + */ + template < typename VALUE_TYPE > + VALUE_TYPE getOrDefault( const OUString& _rValueName, const VALUE_TYPE& _rDefault ) const + { + VALUE_TYPE retVal( _rDefault ); + get_ensureType( _rValueName, retVal ); + return retVal; + } + + /** Retrieves a value with a given name, or defaults it to a given value, if it's not present + in the collection. + For when you only need a single value from a Sequence<PropertyValue>. + */ + template < typename VALUE_TYPE > + static VALUE_TYPE getOrDefault( const css::uno::Sequence<css::beans::PropertyValue> & rPropSeq, + std::u16string_view _rValueName, const VALUE_TYPE& _rDefault ) + { + VALUE_TYPE retVal( _rDefault ); + get_ensureType( rPropSeq, _rValueName, &retVal, ::cppu::UnoType< VALUE_TYPE >::get() ); + return retVal; + } + + /** retrieves a (untyped) value with a given name + + If the collection does not contain a value with the given name, an empty + Any is returned. + */ + const css::uno::Any& get( const OUString& _rValueName ) const + { + return impl_get( _rValueName ); + } + + /** retrieves a (untyped) value with a given name. For when you only need a single value from a Sequence<PropertyValue>. + + If the collection does not contain a value with the given name, an empty + Any is returned. + */ + static const css::uno::Any& get( const css::uno::Sequence<css::beans::PropertyValue>& rPropSeq, std::u16string_view _rValueName ); + + /// determines whether a value with a given name is present in the collection + bool has( const OUString& _rValueName ) const + { + return impl_has( _rValueName ); + } + + /** puts a value into the collection + + @return true if and only if a value was already present previously, in + which case it has been overwritten. + */ + template < typename VALUE_TYPE > + bool put( const OUString& _rValueName, const VALUE_TYPE& _rValue ) + { + return impl_put( _rValueName, css::uno::Any( _rValue ) ); + } + + bool put( const OUString& _rValueName, const css::uno::Any& _rValue ) + { + return impl_put( _rValueName, _rValue ); + } + + /** removes the value with the given name from the collection + + @return true if and only if a value with the given name existed in the collection. + */ + bool remove( const OUString& _rValueName ) + { + return impl_remove( _rValueName ); + } + + /** transforms the collection to a sequence of PropertyValues + + @return + the number of elements in the sequence + */ + sal_Int32 operator >>= ( css::uno::Sequence< css::beans::PropertyValue >& _out_rValues ) const; + + /** transforms the collection to a sequence of NamedValues + + @return + the number of elements in the sequence + */ + sal_Int32 operator >>= ( css::uno::Sequence< css::beans::NamedValue >& _out_rValues ) const; + + /** transforms the collection into a sequence of PropertyValues + */ + css::uno::Sequence< css::beans::PropertyValue > + getPropertyValues() const + { + css::uno::Sequence< css::beans::PropertyValue > aValues; + *this >>= aValues; + return aValues; + } + + /** returns a Sequence< Any >, containing PropertyValues + */ + css::uno::Sequence< css::uno::Any > + getWrappedPropertyValues() const + { + return impl_wrap< css::beans::PropertyValue >(); + } + + /** returns a Sequence< Any >, containing NamedValues + */ + css::uno::Sequence< css::uno::Any > + getWrappedNamedValues() const + { + return impl_wrap< css::beans::NamedValue >(); + } + + /** transforms the collection into a sequence of NamedValues + */ + css::uno::Sequence< css::beans::NamedValue > + getNamedValues() const + { + css::uno::Sequence< css::beans::NamedValue > aValues; + *this >>= aValues; + return aValues; + } + + private: + void impl_assign( const css::uno::Any& i_rWrappedElements ); + void impl_assign( const css::uno::Sequence< css::uno::Any >& _rArguments ); + void impl_assign( const css::uno::Sequence< css::beans::PropertyValue >& _rArguments ); + void impl_assign( const css::uno::Sequence< css::beans::NamedValue >& _rArguments ); + + bool get_ensureType( + const OUString& _rValueName, + void* _pValueLocation, + const css::uno::Type& _rExpectedValueType + ) const; + + static bool get_ensureType( + const css::uno::Sequence<css::beans::PropertyValue> & rPropSeq, + std::u16string_view _rValueName, + void* _pValueLocation, + const css::uno::Type& _rExpectedValueType + ); + + const css::uno::Any& + impl_get( const OUString& _rValueName ) const; + + bool impl_has( const OUString& _rValueName ) const; + + bool impl_put( const OUString& _rValueName, const css::uno::Any& _rValue ); + + bool impl_remove( const OUString& _rValueName ); + + template< class VALUE_TYPE > + css::uno::Sequence< css::uno::Any > impl_wrap() const + { + css::uno::Sequence< VALUE_TYPE > aValues; + *this >>= aValues; + css::uno::Sequence< css::uno::Any > aWrappedValues( aValues.getLength() ); + + css::uno::Any* pO = aWrappedValues.getArray(); + const VALUE_TYPE* pV = aValues.getConstArray(); + const sal_Int32 nLen = aValues.getLength(); + for( sal_Int32 i = 0; i < nLen; ++i ) + *(pO++) = css::uno::Any( *(pV++) ); + + return aWrappedValues; + } + }; + + +} // namespace comphelper + + +#endif // INCLUDED_COMPHELPER_NAMEDVALUECOLLECTION_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |