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 * 
 * 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
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
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#ifndef _TOOLS_RESID_HXX
#define _TOOLS_RESID_HXX

#include <tools/solar.h>
#include <osl/diagnose.h>

struct RSHEADER_TYPE;
typedef sal_uInt32 RESOURCE_TYPE;
#define RSC_NOTYPE				0x100
#define RSC_DONTRELEASE 		(sal_uInt32(1 << 31))

class ResMgr;

//---------
//- ResId -
//---------

class ResId
{
    /*
    consider two cases: either m_pResource is valid and points
    two a resource data buffer; then m_nResId and m_pResMgr are
    not used and may be 0 resp. NULL
    or m_pResource is NULL, the m_nResId and m_pResMgr must be valid.
    In this case the highest bit if set decides whether to
    not to release the Resource context after loading this id
    */
	RSHEADER_TYPE*	        m_pResource;
    
	mutable sal_uInt32      m_nResId; 	   // Resource Identifier
	mutable RESOURCE_TYPE	m_nRT;		   // type for loading (mutable to be set later)
	mutable ResMgr *		m_pResMgr;	   // load from this ResMgr (mutable for setting on demand)
	mutable RESOURCE_TYPE	m_nRT2;		   // type for loading (supercedes m_nRT)
    mutable sal_uInt32      m_nWinBits;    // container for original style bits on a window in a resource
    
    void ImplInit( sal_uInt32 nId, ResMgr& rMgr, RSHEADER_TYPE* pRes )
    {
        m_pResource = pRes; m_nResId = nId; m_nRT = RSC_NOTYPE; m_pResMgr = &rMgr; m_nRT2 = RSC_NOTYPE; m_nWinBits = 0;
        OSL_ENSURE( m_pResMgr != NULL, "ResId without ResMgr created" );
    }
    public:
    ResId( RSHEADER_TYPE * pRc, ResMgr& rMgr )
    {
        ImplInit( 0, rMgr, pRc );
    }
    ResId( sal_uInt32 nId, ResMgr& rMgr )
    {
        ImplInit( nId, rMgr, NULL );
    }
    // backwards compatibility; avoid ambiguities
    ResId( sal_uInt16 nId, ResMgr& rMgr )
    {
        ImplInit( sal_uInt32(nId), rMgr, NULL );
    }
    ResId( int nId, ResMgr& rMgr )
    {
        ImplInit( sal_uInt32(nId), rMgr, NULL );
    }
    ResId( long nId, ResMgr& rMgr )
    {
        ImplInit( sal_uInt32(nId), rMgr, NULL );
    }
    
    sal_uInt32 GetWinBits() const
    { return m_nWinBits; }
    void SetWinBits( sal_uInt32 nBits ) const
    { m_nWinBits = nBits; }
    
	RESOURCE_TYPE	GetRT() const { return( m_nRT ); }
	const ResId &	SetRT( RESOURCE_TYPE nType ) const
    /*
    Set the type if not already set. Ask for tye with GetRT()
    
    [Example]
    ResId aId( 1000 );
    aId.SetRT( RSC_WINDOW );	// settype window Window
    aId.SetRT( RSC_BUTTON );	// will not set type Button
    //aId.GetRT() == RSC_WINDOW is true
    
    @see    
    ResId::GetRT2(), ResId::GetRT()
    */
    {
        if( RSC_NOTYPE == m_nRT )
            m_nRT = nType;
        return *this;
    }
	RESOURCE_TYPE	GetRT2() const
    /*
    Get the effective type (m_nRT2 or m_nRT1)

	A second resource type is used to supercede settings
    of the base class ( e.g. Window )
    */
    {
        return (RSC_NOTYPE == m_nRT2) ? m_nRT : m_nRT2;
    }
	const ResId &	SetRT2( RESOURCE_TYPE nTyp ) const
    /*
    Set the superceding type. Ask spcifically for it with GetRT2()
    
    SetRT2() may only be called if no derived class calls SetRT in its
    Resource constructor.
    */
    {
        if( RSC_NOTYPE == m_nRT2 )
            m_nRT2 = nTyp;
        return *this;
    }
    
	ResMgr *		GetResMgr() const { return m_pResMgr; }
	const ResId &	SetResMgr( ResMgr * pMgr ) const
    {
        m_pResMgr = pMgr;
        OSL_ENSURE( m_pResMgr != NULL, "invalid ResMgr set on ResId" );
        return *this;
    }
    
	const ResId &  SetAutoRelease(sal_Bool bRelease) const
    {
        if( bRelease )
            m_nResId &= ~RSC_DONTRELEASE;
        else
            m_nResId |= RSC_DONTRELEASE;
        return *this;
    }
    
	sal_Bool		   IsAutoRelease()	const
    { return !(m_nResId & RSC_DONTRELEASE); }
    
	sal_uInt32	   GetId()			const { return m_nResId & ~RSC_DONTRELEASE; }
	RSHEADER_TYPE* GetpResource()	const { return m_pResource; }
};

#endif // _RESID_HXX