/**************************************************************
 * 
 * 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
 * under the License.
 * 
 *************************************************************/


#ifndef SC_PROGRESS_HXX
#define SC_PROGRESS_HXX

#include <sfx2/progress.hxx>
#include "scdllapi.h"

class ScDocument;

/*
 * #i102566
 * Drawing a progress bar update is not cheap, so if we draw it on every
 * percentage change of 200 calculations we get one progress draw per 2
 * calculations which is slower than doing the calculations themselves. So as a
 * rough guide only do an update per MIN_NO_CODES_PER_PROGRESS_UPDATE
 * calculations
 */
#define MIN_NO_CODES_PER_PROGRESS_UPDATE 100


class SC_DLLPUBLIC ScProgress
{
private:
	static	SfxProgress*	pGlobalProgress;
	static	sal_uLong			nGlobalRange;
	static	sal_uLong			nGlobalPercent;
	static	sal_Bool			bGlobalNoUserBreak;
	static	ScProgress*		pInterpretProgress;
	static	ScProgress*		pOldInterpretProgress;
	static	sal_uLong			nInterpretProgress;
	static	sal_Bool			bAllowInterpretProgress;
	static	ScDocument*		pInterpretDoc;
	static	sal_Bool			bIdleWasDisabled;

			SfxProgress*	pProgress;

							// not implemented
							ScProgress( const ScProgress& );
			ScProgress&		operator=( const ScProgress& );

	static	void			CalcGlobalPercent( sal_uLong nVal )
								{
									nGlobalPercent = nGlobalRange ?
										nVal * 100 / nGlobalRange : 0;
								}

public:
	static	SfxProgress*	GetGlobalSfxProgress() { return pGlobalProgress; }
	static	sal_Bool			IsUserBreak() { return !bGlobalNoUserBreak; }
	static	void			CreateInterpretProgress( ScDocument* pDoc,
													sal_Bool bWait = sal_True );
	static	ScProgress*		GetInterpretProgress() { return pInterpretProgress; }
	static	void			DeleteInterpretProgress();
	static	sal_uLong			GetInterpretCount() { return nInterpretProgress; }
	static	sal_uLong			GetGlobalRange()	{ return nGlobalRange; }
	static	sal_uLong			GetGlobalPercent()	{ return nGlobalPercent; }

							ScProgress( SfxObjectShell* pObjSh,
										 const String& rText,
										 sal_uLong nRange, sal_Bool bAllDocs = sal_False,
										 sal_Bool bWait = sal_True );
							~ScProgress();

#ifdef SC_PROGRESS_CXX
							// nur fuer DummyInterpret, sonst nie benutzen!!!
							ScProgress();
#endif
							// kann NULL sein!
			SfxProgress*	GetSfxProgress() const { return pProgress; }

			sal_Bool			SetStateText( sal_uLong nVal, const String &rVal, sal_uLong nNewRange = 0 )
								{
									if ( pProgress )
									{
										if ( nNewRange )
											nGlobalRange = nNewRange;
										CalcGlobalPercent( nVal );
										if ( !pProgress->SetStateText( nVal, rVal, nNewRange ) )
											bGlobalNoUserBreak = sal_False;
										return bGlobalNoUserBreak;
									}
									return sal_True;
								}
			sal_Bool			SetState( sal_uLong nVal, sal_uLong nNewRange = 0 )
								{
									if ( pProgress )
									{
										if ( nNewRange )
											nGlobalRange = nNewRange;
										CalcGlobalPercent( nVal );
										if ( !pProgress->SetState( nVal, nNewRange ) )
											bGlobalNoUserBreak = sal_False;
										return bGlobalNoUserBreak;
									}
									return sal_True;
								}
			sal_Bool			SetStateCountDown( sal_uLong nVal )
								{
									if ( pProgress )
									{
										CalcGlobalPercent( nGlobalRange - nVal );
										if ( !pProgress->SetState( nGlobalRange - nVal ) )
											bGlobalNoUserBreak = sal_False;
										return bGlobalNoUserBreak;
									}
									return sal_True;
								}
			sal_Bool			SetStateOnPercent( sal_uLong nVal )
								{	// nur wenn Prozent mehr als vorher
									if ( nGlobalRange && (nVal * 100 /
											nGlobalRange) > nGlobalPercent )
										return SetState( nVal );
									return sal_True;
								}
			sal_Bool			SetStateCountDownOnPercent( sal_uLong nVal )
								{	// nur wenn Prozent mehr als vorher
									if ( nGlobalRange &&
											((nGlobalRange - nVal) * 100 /
											nGlobalRange) > nGlobalPercent )
										return SetStateCountDown( nVal );
									return sal_True;
								}
			sal_uLong			GetState()
								{
									if ( pProgress )
										return pProgress->GetState();
									return 0;
								}
};


#endif