libreoffice/forms/source/xforms/NameContainer.hxx

/* -*- 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_FORMS_SOURCE_XFORMS_NAMECONTAINER_HXX
#define INCLUDED_FORMS_SOURCE_XFORMS_NAMECONTAINER_HXX

#include <cppuhelper/implbase1.hxx>
#include <map>

#include <com/sun/star/container/XNameContainer.hpp>
#include <com/sun/star/container/NoSuchElementException.hpp>
#include <com/sun/star/lang/IllegalArgumentException.hpp>
#include <com/sun/star/lang/WrappedTargetException.hpp>
#include <com/sun/star/uno/Any.hxx>
#include <com/sun/star/uno/Reference.hxx>
#include <com/sun/star/uno/RuntimeException.hpp>
#include <com/sun/star/uno/Type.hxx>

typedef cppu::WeakImplHelper1<
    com::sun::star::container::XNameContainer
> NameContainer_t;

template<class T>
class NameContainer : public NameContainer_t
{
protected:
    typedef std::map<OUString,T> map_t;
    map_t maItems;


    bool hasItems()
    {
        return ! maItems.empty();
    }

    typename map_t::const_iterator findItem( const OUString& rName )
    {
        return maItems.find( rName );
    }

    bool hasItem( const OUString& rName )
    {
        return findItem( rName ) != maItems.end();
    }

    T getItem( const OUString& rName )
    {
        OSL_ENSURE( hasItem( rName ), "can't get non-existant item" );
        return maItems[ rName ];
    }


    void replace( const OUString& rName,
                  const T& aElement )
    {
        OSL_ENSURE( hasItem( rName ), "unknown item" );
        maItems[ rName ] = aElement;
    }

    void insert( const OUString& rName,
                 const T& aElement )
    {
        OSL_ENSURE( ! hasItem( rName ), "item already in set" );
        maItems[ rName ] = aElement;
    }

    void remove( const OUString& rName )
    {
        OSL_ENSURE( hasItem( rName ), "item not in set" );
        maItems.erase( rName );
    }


public:

    NameContainer() {}
    virtual ~NameContainer() {}


    // methods for XElementAccess


    virtual com::sun::star::uno::Type SAL_CALL getElementType()
        throw( com::sun::star::uno::RuntimeException, std::exception ) SAL_OVERRIDE
    {
        return getCppuType( static_cast<T*>( NULL ) );
    }

    virtual sal_Bool SAL_CALL hasElements()
        throw( com::sun::star::uno::RuntimeException, std::exception ) SAL_OVERRIDE
    {
        return hasItems();
    }



    // methods for XNameAccess (inherits XElementAccess)


    virtual com::sun::star::uno::Any SAL_CALL getByName(
        const OUString& rName )
        throw( com::sun::star::container::NoSuchElementException,
               com::sun::star::lang::WrappedTargetException,
               com::sun::star::uno::RuntimeException, std::exception ) SAL_OVERRIDE
    {
        typename map_t::const_iterator aIter = findItem( rName );
        if( aIter == maItems.end() )
            throw com::sun::star::container::NoSuchElementException();
        else
            return com::sun::star::uno::makeAny( aIter->second );
    }

    virtual com::sun::star::uno::Sequence<OUString> SAL_CALL getElementNames()
        throw( com::sun::star::uno::RuntimeException, std::exception ) SAL_OVERRIDE
    {
        com::sun::star::uno::Sequence<OUString> aSequence( maItems.size() );
        typename map_t::const_iterator aIter = maItems.begin();
        OUString* pStrings = aSequence.getArray();
        while( aIter != maItems.end() )
        {
            *pStrings = aIter->first;
            ++aIter;
            ++pStrings;
        }
        OSL_ENSURE( pStrings == aSequence.getArray() + aSequence.getLength(),
                    "sequence not of right size; possible buffer overflow" );
        return aSequence;
    }

    virtual sal_Bool SAL_CALL hasByName(
        const OUString& rName )
        throw( com::sun::star::uno::RuntimeException, std::exception ) SAL_OVERRIDE
    {
        return hasItem( rName );
    }



    // methods for XNameReplace (inherits XNameAccess)


    virtual void SAL_CALL replaceByName(
        const OUString& rName,
        const com::sun::star::uno::Any& aElement )
        throw( com::sun::star::lang::IllegalArgumentException,
               com::sun::star::container::NoSuchElementException,
               com::sun::star::lang::WrappedTargetException,
               com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE
    {
        T aItem;
        if( aElement >>= aItem )
            if( hasByName( rName ) )
                replace( rName, aItem );
            else
                throw com::sun::star::container::NoSuchElementException();
        else
            throw com::sun::star::lang::IllegalArgumentException();
    }



    // methods for XNameContainer (inherits XNameReplace)


    virtual void SAL_CALL insertByName(
        const OUString& rName,
        const com::sun::star::uno::Any& aElement )
        throw( com::sun::star::lang::IllegalArgumentException,
               com::sun::star::container::ElementExistException,
               com::sun::star::lang::WrappedTargetException,
               com::sun::star::uno::RuntimeException, std::exception ) SAL_OVERRIDE
    {
        T aItem;
        if( aElement >>= aItem )
            if( ! hasByName( rName ) )
                insert( rName, aItem );
            else
                throw com::sun::star::container::ElementExistException();
        else
            throw com::sun::star::lang::IllegalArgumentException();
    }

    virtual void SAL_CALL removeByName(
        const OUString& rName )
        throw( com::sun::star::container::NoSuchElementException,
               com::sun::star::lang::WrappedTargetException,
               com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE
    {
        if( hasByName( rName ) )
            remove( rName );
        else
            throw com::sun::star::container::NoSuchElementException();
    }

};

#endif

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