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/* -*- 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_OOX_HELPER_REFVECTOR_HXX
#define INCLUDED_OOX_HELPER_REFVECTOR_HXX
#include <algorithm>
#include <functional>
#include <memory>
#include <vector>
#include <sal/types.h>
namespace oox {
/** Template for a vector of ref-counted objects with additional accessor functions.
An instance of the class RefVector< Type > stores elements of the type
std::shared_ptr< Type >. The new accessor functions has() and get()
work correctly for indexes out of the current range, there is no need to
check the passed index before.
*/
template< typename ObjType >
class RefVector : public ::std::vector< std::shared_ptr< ObjType > >
{
public:
typedef ::std::vector< std::shared_ptr< ObjType > > container_type;
typedef typename container_type::value_type value_type;
typedef typename container_type::size_type size_type;
public:
/** Returns a reference to the object with the passed index, or 0 on error. */
value_type get( sal_Int32 nIndex ) const
{
if( const value_type* pxRef = getRef( nIndex ) ) return *pxRef;
return value_type();
}
/** Calls the passed functor for every contained object, automatically
skips all elements that are empty references. */
template< typename FunctorType >
void forEach( FunctorType aFunctor ) const
{
::std::for_each( this->begin(), this->end(), ForEachFunctor< FunctorType >( aFunctor ) );
}
/** Calls the passed member function of ObjType on every contained object,
automatically skips all elements that are empty references. */
template< typename FuncType >
void forEachMem( FuncType pFunc ) const
{
forEach( ::std::bind( pFunc, std::placeholders::_1 ) );
}
/** Calls the passed member function of ObjType on every contained object,
automatically skips all elements that are empty references. */
template< typename FuncType, typename ParamType >
void forEachMem( FuncType pFunc, ParamType aParam ) const
{
forEach( ::std::bind( pFunc, std::placeholders::_1, aParam ) );
}
/** Calls the passed member function of ObjType on every contained object,
automatically skips all elements that are empty references. */
template< typename FuncType, typename ParamType1, typename ParamType2 >
void forEachMem( FuncType pFunc, ParamType1 aParam1, ParamType2 aParam2 ) const
{
forEach( ::std::bind( pFunc, std::placeholders::_1, aParam1, aParam2 ) );
}
/** Calls the passed member function of ObjType on every contained object,
automatically skips all elements that are empty references. */
template< typename FuncType, typename ParamType1, typename ParamType2, typename ParamType3 >
void forEachMem( FuncType pFunc, ParamType1 aParam1, ParamType2 aParam2, ParamType3 aParam3 ) const
{
forEach( ::std::bind( pFunc, std::placeholders::_1, aParam1, aParam2, aParam3 ) );
}
/** Calls the passed functor for every contained object. Passes the index as
first argument and the object reference as second argument to rFunctor. */
template< typename FunctorType >
void forEachWithIndex( const FunctorType& rFunctor ) const
{
::std::for_each( this->begin(), this->end(), ForEachFunctorWithIndex< FunctorType >( rFunctor ) );
}
/** Calls the passed member function of ObjType on every contained object.
Passes the vector index as first argument to the member function. */
template< typename FuncType, typename ParamType1, typename ParamType2 >
void forEachMemWithIndex( FuncType pFunc, ParamType1 aParam1, ParamType2 aParam2 ) const
{
forEachWithIndex( ::std::bind( pFunc, std::placeholders::_2, std::placeholders::_1, aParam1, aParam2 ) );
}
/** Searches for an element by using the passed functor that takes a
constant reference of the object type (const ObjType&). */
template< typename FunctorType >
value_type findIf( const FunctorType& rFunctor ) const
{
typename container_type::const_iterator aIt = ::std::find_if( this->begin(), this->end(), FindFunctor< FunctorType >( rFunctor ) );
return (aIt == this->end()) ? value_type() : *aIt;
}
private:
template< typename FunctorType >
struct ForEachFunctor
{
FunctorType maFunctor;
explicit ForEachFunctor( const FunctorType& rFunctor ) : maFunctor( rFunctor ) {}
void operator()( const value_type& rxValue ) { if( rxValue.get() ) maFunctor( *rxValue ); }
};
template< typename FunctorType >
struct ForEachFunctorWithIndex
{
FunctorType maFunctor;
sal_Int32 mnIndex;
explicit ForEachFunctorWithIndex( const FunctorType& rFunctor ) : maFunctor( rFunctor ), mnIndex( 0 ) {}
void operator()( const value_type& rxValue ) {
if( rxValue.get() ) maFunctor( mnIndex, *rxValue );
++mnIndex;
}
};
template< typename FunctorType >
struct FindFunctor
{
FunctorType maFunctor;
explicit FindFunctor( const FunctorType& rFunctor ) : maFunctor( rFunctor ) {}
bool operator()( const value_type& rxValue ) { return rxValue.get() && maFunctor( *rxValue ); }
};
const value_type* getRef( sal_Int32 nIndex ) const
{
return ((0 <= nIndex) && (static_cast< size_type >( nIndex ) < this->size())) ?
&(*this)[ static_cast< size_type >( nIndex ) ] : 0;
}
};
} // namespace oox
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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