CWE-ou-minkata/Sources/Tools/MaxMain/plCommonObjLib.cpp

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*==LICENSE==*/
//////////////////////////////////////////////////////////////////////////////
//                                                                          //
//  plCommonObjLib - Base class for a library of objects that are stored    //
//                   in common pages (for now, that means Textures or       //
//                   BuiltIn pages).                                        //
//                                                                          //
//////////////////////////////////////////////////////////////////////////////

#include "HeadSpin.h"
#include "hsTypes.h"
#include "plCommonObjLib.h"
#include "pnKeyedObject/hsKeyedObject.h"
#include "pnKeyedObject/plUoid.h"
#include "plPluginResManager.h"


//////////////////////////////////////////////////////////////////////////////
//// Static Array And Functions //////////////////////////////////////////////
//  Used only by the export resManager, to create and maintain a list of the
//  commonObjLibs to be used.
//////////////////////////////////////////////////////////////////////////////

class plCommonObjLibList
{
    public:
        UInt32                      fRefCount;
        hsTArray<plCommonObjLib *>  fLibs;

        plCommonObjLibList() { fRefCount = 0; }

        void    Add( plCommonObjLib *lib )
        {
            fLibs.Append( lib );
            fRefCount++;
        }

        hsBool  Remove( plCommonObjLib *lib )
        {
            int idx = fLibs.Find( lib );
            if( idx != fLibs.kMissingIndex )
                fLibs.Remove( idx );
            else
            {
                hsAssert( false, "Common Object Lib not found in list upon deletion. Are you misusing this class? Tsk tsk!" );
            }

            fRefCount--;
            return ( fRefCount == 0 ) ? true : false;
        }
};

plCommonObjLibList  *plCommonObjLib::fLibList = nil;

UInt32  plCommonObjLib::GetNumLibs( void )
{
    return ( fLibList != nil ) ? fLibList->fLibs.GetCount() : 0;
}

plCommonObjLib  *plCommonObjLib::GetLib( UInt32 idx )
{
    if( fLibList == nil )
        return nil;

    if( idx < fLibList->fLibs.GetCount() )
        return fLibList->fLibs[ idx ];

    return nil;
}


//////////////////////////////////////////////////////////////////////////////
//// Constructor/Destructor //////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////

plCommonObjLib::plCommonObjLib()
{
    // Make sure we have a list to add ourselves to
    if( fLibList == nil )
        fLibList = TRACKED_NEW plCommonObjLibList();

    // Add ourselves to the list of libs
    fLibList->Add( this );
}

plCommonObjLib::~plCommonObjLib()
{
    ClearObjectList();

    // Remove ourselves from the list of libs
    if( fLibList->Remove( this ) )
    {
        // List is no longer needed
        delete fLibList;
        fLibList = nil;
    }
}


//////////////////////////////////////////////////////////////////////////////
//// Base Utility Functions //////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////

//// ClearObjectList /////////////////////////////////////////////////////////

void    plCommonObjLib::ClearObjectList( void )
{
    int     i;


    // Unref our object list, so they'll go away properly
    for( i = 0; i < fObjects.GetCount(); i++ )
        fObjects[ i ]->GetKey()->UnRefObject();
    fObjects.Reset();
}

//// AddObject ///////////////////////////////////////////////////////////////
//  Adds the given object to our lib. The object must have a key already.

void    plCommonObjLib::AddObject( hsKeyedObject *object )
{
    if( object == nil || object->GetKey() == nil )
    {
        hsAssert( false, "Trying to add an object to a commonLib that doesn't have a key" );
        return;
    }

    // Ref it so it won't go away on us
    object->GetKey()->RefObject();
    fObjects.Append( object );
}

//// RemoveObjectAndKey //////////////////////////////////////////////////////
//  Given the key to an object, completely nukes the object and the key. After
//  this function call, the key should no longer exist in the registry and be
//  free to use elsewhere.

hsBool  plCommonObjLib::RemoveObjectAndKey( plKey &key )
{
    if (!key)
    {
        hsAssert( false, "Received RemoveObjectAndKey() call for a key that is invalid. Nillifying key anyway." );
        key = nil;
        return true;
    }
    hsKeyedObject *object = hsKeyedObject::ConvertNoRef( key->ObjectIsLoaded() );
    if( object == nil )
    {
        hsAssert( false, "Received RemoveObjectAndKey() call for a key that isn't loaded. Nillifying key anyway." );
        key = nil;
        return true;
    }

    int idx = fObjects.Find( object );
    if( idx == fObjects.kMissingIndex )
    {
        hsAssert( false, "Trying to RemoveObjectAndKey() for a common object not in the lib." );
        key = nil;
        return true;
    }

    // Unref and remove from our list
    fObjects[ idx ]->GetKey()->UnRefObject();
    fObjects.Remove( idx );

    // Nuke out the key and its object
    if( !plPluginResManager::ResMgr()->NukeKeyAndObject( key ) )
    {
        hsAssert( false, "Trouble nuking out the key for this texture. Problems abound...." );
        return false;
    }

    // All done!
    return true;
}

//// FindObject //////////////////////////////////////////////////////////////
//  Given a name and an optional class type, tries to find that object in
//  our lib. Returns nil if not found. Use to find out if you already have a
//  object of a given name that was previously exported.

hsKeyedObject   *plCommonObjLib::FindObject( const char *name, UInt16 classType /* = -1 */ )
{
    int     i;


    for( i = 0; i < fObjects.GetCount(); i++ )
    {
        const plUoid    &uoid = fObjects[ i ]->GetKey()->GetUoid();


        if( stricmp( uoid.GetObjectName(), name ) == 0 &&
            ( classType == (UInt16)-1 || classType == uoid.GetClassType() ) )
        {
            return fObjects[ i ];
        }
    }

    return nil;
}