/******************************************************************************
 * $Id: ogr_kml.h 16908 2009-05-02 14:53:26Z rouault $
 *
 * Project:  KML Driver
 * Purpose:  Declarations for OGR wrapper classes for KML, and OGR->KML
 *           translation of geometry.
 * Author:   Christopher Condit, condit@sdsc.edu;
 *           Jens Oberender, j.obi@troja.net
 *
 ******************************************************************************
 * Copyright (c) 2006, Christopher Condit
 *               2007, Jens Oberender
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 ****************************************************************************/
#ifndef OGR_KML_H_INCLUDED
#define OGR_KML_H_INCLUDED

#include "ogrsf_frmts.h"

#ifdef HAVE_EXPAT
#  include "kmlvector.h"
#endif

class OGRKMLDataSource;

/************************************************************************/
/*                            OGRKMLLayer                               */
/************************************************************************/

class OGRKMLLayer : public OGRLayer
{
public:

    OGRKMLLayer( const char* pszName_, 
                 OGRSpatialReference* poSRS, 
                 int bWriter,
                 OGRwkbGeometryType eType,
                 OGRKMLDataSource* poDS );
    ~OGRKMLLayer();

    //
    // OGRLayer Interface
    //
    OGRFeatureDefn* GetLayerDefn();
    OGRSpatialReference* GetSpatialRef();
    OGRErr CreateFeature( OGRFeature* poFeature );
    OGRErr CreateField( OGRFieldDefn* poField, int bApproxOK = TRUE );
    void ResetReading();
    OGRFeature* GetNextFeature();
    int GetFeatureCount( int bForce = TRUE );
    int TestCapability( const char* pszCap );

    //
    // OGRKMLLayer Interface
    //
    void SetLayerNumber( int nLayer );

private:
    OGRKMLDataSource* poDS_;
    OGRSpatialReference* poSRS_;
	OGRCoordinateTransformation *poCT_;
	
    OGRFeatureDefn* poFeatureDefn_;

    int iNextKMLId_;
    int nTotalKMLCount_;
    int bWriter_;
    int nLayerNumber_;
    int nWroteFeatureCount_;
    char* pszName_;

    int nLastAsked;
    int nLastCount;
};

/************************************************************************/
/*                           OGRKMLDataSource                           */
/************************************************************************/

class OGRKMLDataSource : public OGRDataSource
{
public:
    OGRKMLDataSource();
    ~OGRKMLDataSource();

    //
    // OGRDataSource Interface
    //
    int Open( const char* pszName, int bTestOpen );
    const char* GetName() { return pszName_; }
    int GetLayerCount() { return nLayers_; }
    OGRLayer* GetLayer( int nLayer );
    OGRLayer* CreateLayer( const char* pszName,
                           OGRSpatialReference* poSRS = NULL,
                           OGRwkbGeometryType eGType = wkbUnknown,
                           char** papszOptions = NULL );
    int TestCapability( const char* pszCap );
    
    //
    // OGRKMLDataSource Interface
    //
    int Create( const char* pszName, char** papszOptions );    
    const char* GetNameField() const { return pszNameField_; }
    const char* GetDescriptionField() const { return pszDescriptionField_; }
    const char* GetAltitudeMode() { return pszAltitudeMode_; }
    FILE* GetOutputFP() { return fpOutput_; }
    void GrowExtents( OGREnvelope *psGeomBounds );
#ifdef HAVE_EXPAT
    KML* GetKMLFile() { return poKMLFile_; };
#endif

	bool IsFirstCTError() { return !bIssuedCTError_; }
	void IssuedFirstCTError() { bIssuedCTError_ = true; }

private:

#ifdef HAVE_EXPAT
    KML* poKMLFile_;
#endif

    char* pszName_;

    OGRKMLLayer** papoLayers_;
    int nLayers_;

    //The name of the field to use for the KML name element
    char* pszNameField_;
    char* pszDescriptionField_;

    //The KML altitude mode to use 
 	char* pszAltitudeMode_; 

    char** papszCreateOptions_;

    // output related parameters 
    FILE* fpOutput_;

    OGREnvelope oEnvelope_;
    int nSchemaInsertLocation_;
	
	//Have we issued a coordinate transformation already for this datasource
	bool bIssuedCTError_;		
};

/************************************************************************/
/*                             OGRKMLDriver                             */
/************************************************************************/

class OGRKMLDriver : public OGRSFDriver
{
public:
    ~OGRKMLDriver();

    //
    // OGRSFDriver Interface
    //
    const char* GetName();
    OGRDataSource* Open( const char * pszName_, int bUpdate );
    OGRDataSource* CreateDataSource( const char *pszName_, char** papszOptions );
    int TestCapability( const char* pszCap );
};

#endif /* OGR_KML_H_INCLUDED */

