/* Copyright (c) Microsoft Corporation.
   Licensed under the MIT License. */

/**************************************************************

   Browser Class

    Author : *****
	Review Status: Reviewed

	Studio Independent Browsers:
	BASE --> CMH --> GOK	-->	BRWD  (Browser display class)
	BRWD --> BRWL  (Browser list class; chunky based)
	BRWD --> BRWT  (Browser text class)
	BRWD --> BRWL --> BRWN  (Browser named list class)

	Studio Dependent Browsers:
	BRWD --> BRWR  (Roll call class)
	BRWD --> BRWT --> BRWA  (Browser action class)
	BRWD --> BRWL --> BRWP	(Browser prop/actor class)
	BRWD --> BRWL --> BRWB	(Browser background class)
	BRWD --> BRWL --> BRWC	(Browser camera class)
	BRWD --> BRWL --> BRWN --> BRWM (Browser music class)
	BRWD --> BRWL --> BRWN --> BRWM --> BRWI (Browser import sound class)

	Note: An "frm" refers to the displayed frames on any page.
	A "thum" is a generic Browser Thumbnail, which may be a
	chid, cno, cnoPar, gob, stn, etc.	A browser will display,
	over multiple pages, as many browser entities as there are
	thum's.

***************************************************************/

#ifndef BRWD_H
#define BRWD_H

const long kcmhlBrowser = 0x11000;	// nice medium level for the Browser
const long kcbMaxCrm = 300000;
const long kdwTotalPhysLim = 10240000; 	// 10MB	heuristic
const long kdwAvailPhysLim = 1024000;	// 1MB heuristic
const kBrwsScript = (kstDefault << 16) | kchidBrowserDismiss;

/************************************

	Browser Context	CLass
	Optional context to carry over
	between successive instantiations
	of the same browser

*************************************/
#define BRCN_PAR BASE
#define kclsBRCN 'BRCN'
typedef class BRCN *PBRCN;
class BRCN : public BRCN_PAR
	{
	RTCLASS_DEC
	ASSERT
	MARKMEM

protected:
	BRCN(void) {};

public:
	long brwdid;
	long ithumPageFirst;
	};

/************************************

   Browser ThumbFile Cki Struct

*************************************/
struct TFC
	{
	short bo;
	short osk;
	union
		{
		struct
			{
			CTG ctg;
			CNO cno;
			};
		struct
			{
			ulong grfontMask;
			ulong grfont;
			};
		struct
			{
			CTG ctg;
			CHID chid;
			};
		};
	};
const BOM kbomTfc = 0x5f000000;


/************************************

   Browser Display Class

*************************************/
#define BRWD_PAR GOK
#define kclsBRWD 'BRWD'
#define brwdidNil ivNil
typedef class BRWD *PBRWD;
class BRWD :  public BRWD_PAR
	{
	RTCLASS_DEC
	ASSERT
	MARKMEM
	CMD_MAP_DEC(BRWD)

protected:
	long _kidFrmFirst;			// kid of first frame
	long _kidControlFirst;		// kid of first control button
	long _dxpFrmOffset;			// x inset of thumb in frame
	long _dypFrmOffset;			// y inset of thumb in frame
	long _sidDefault;			// default sid
	long _thumDefault;			// default thum
	PBRCN _pbrcn;				// context carryover
	long _idsFont;					// string id of Font
	long _kidThumOverride;		// projects may override one thum gobid
	long _ithumOverride;		// projects may override one thum gobid
	PTGOB _ptgobPage;			// for page numbers
	PSTDIO _pstdio;
	
	// Display State variables
	long _cthumCD;		// Non-user content
	long _ithumSelect;	// Hilited frame
	long _ithumPageFirst;// Index to thd of first frame on current page
	long _cfrmPageCur;	// Number of visible thumbnails per current page
	long _cfrm;			// Total frames possible per page
	long _cthumScroll;	// #items to scroll on fwd/back.  default ivNil -> page scrolling
	bool _fWrapScroll;	// Wrap around.  Default = fTrue;
	bool _fNoRepositionSel;	// Don't reposition selection : default = fFalse;

protected:	
	void _SetScrollState(void);
	long _CfrmCalc(void);
	static bool _FBuildGcb(GCB *pgcb, long kidPar, long kidBrws);
	bool _FInitGok(PRCA prca, long kidGlass);
	void _SetVarForOverride(void);

	virtual long _Cthum(void) {AssertThis(0); return 0;}
	virtual bool _FSetThumFrame(long ithum, PGOB pgobPar) {AssertThis(0); return fFalse;}
	virtual bool _FClearHelp(long ifrm) { return fTrue;}
	virtual void _ReleaseThumFrame(long ifrm) {}
	virtual long _IthumFromThum(long thum, long sid) { return thum; }
	virtual void _GetThumFromIthum(long ithum, void *pThumSelect, long *psid);
	virtual void _ApplySelection(long thumSelect, long sid) {}
	virtual void _ProcessSelection(void) {}
	virtual bool _FUpdateLists() { return fTrue;}
	virtual void _SetCbPcrmMin(void) {}
	void _CalcIthumPageFirst(void);
	bool _FIsIthumOverride(long ithum) { return FPure(ithum == _ithumOverride); }
	PGOB _PgobFromIfrm(long ifrm);
	long _KidThumFromIfrm(long ifrm);
	void _UnhiliteCurFrm(void);
	bool _FHiliteFrm(long ifrmSelect);
	void _InitStateVars(PCMD pcmd, PSTDIO pstdio, bool fWrapScroll, long cthumScroll);
	void _InitFromData(PCMD pcmd, long ithumSelect, long ithumDisplay);
	virtual void _CacheContext(void);

public:

	//
	// Constructors and destructors
	//	
	BRWD(PGCB pgcb) : BRWD_PAR(pgcb) { _ithumOverride = -1;	_kidThumOverride = -1;}
	~BRWD(void);

	static PBRWD PbrwdNew(PRCA prca, long kidPar, long kidBrwd);
	void Init(PCMD pcmd, long ithumSelect, long ithumDisplay, PSTDIO pstdio,
		bool fWrapScroll = fTrue, long cthumScroll = ivNil);
	bool FDraw(void);
	bool FCreateAllTgob(void);				// For any text based browsers

	//
	// Command Handlers
	// Selection does not exit the browser
	//
	bool FCmdFwd(PCMD pcmd);			// Page fwd
	bool FCmdBack(PCMD pcmd);			// Page back
	bool FCmdSelect(PCMD pcmd);
	bool FCmdSelectThum(PCMD pcmd);			// Set viewing page
	virtual void Release(void);
	virtual bool FCmdCancel(PCMD pcmd);						// See brwb
	virtual bool FCmdDel(PCMD pcmd) { return fTrue; }		// See brwm
	virtual bool FCmdOk(PCMD pcmd);
	virtual bool FCmdFile(PCMD pcmd) { return fTrue; }		// See brwm
	virtual bool FCmdChangeCel(PCMD pcmd) { return fTrue; }	// See brwa
	};

/************************************

	Browser List Context CLass
	Optional context to carry over
	between successive instantiations
	of the same browser

*************************************/
#define BRCNL_PAR BRCN
#define kclsBRCNL 'brcl'
typedef class BRCNL *PBRCNL;
class BRCNL : public BRCNL_PAR
	{
	RTCLASS_DEC
	ASSERT
	MARKMEM

protected:
	~BRCNL(void);

public:
	long cthumCD;
	CKI ckiRoot;
	PGL pglthd;
	PGST pgst;
	PCRM pcrm;
	};



//
//	Thumbnail descriptors : one per thumbnail
//
const long kglstnGrow = 5;
const long kglthdGrow= 10;
struct THD
	{
	union
		{
		TAG tag;        // TAG pointing to content
		struct
			{
			long lwFill1;  // sid
			long lwFill2;  // pcrf
			ulong grfontMask;
			ulong grfont;
			};
		struct
			{
			long lwFill1;
			long lwFill2;
			CTG ctg;
			CHID chid;		// CHID of CD content
			};
		};

	CNO cno;		// GOKD cno
	CHID chidThum;	// GOKD's parent's CHID (relative to GOKD parent's parent)
	long ithd;      // Original index for this THD, before sorting (used to
	                // retrieve proper STN for the BRWN-derived browsers)
	};

/* Browser Content List Base --  create one of these when you want a list of a
	specific kind of content and you don't care about the names. */
#define BCL_PAR BASE
typedef class BCL *PBCL;
#define kclsBCL 'BCL'
class BCL : public BCL_PAR
{
	RTCLASS_DEC
	ASSERT
	MARKMEM

protected:
	CTG _ctgRoot;
	CNO _cnoRoot;
	CTG _ctgContent;
	bool _fDescend;
	PGL _pglthd;

protected:
	BCL(void) { _pglthd = pvNil; }
	~BCL(void) { ReleasePpo(&_pglthd); }

	bool _FInit(PCRM pcrm, CKI *pckiRoot, CTG ctgContent, PGL pglthd);
	bool _FAddGokdToThd(PCFL pcfl, long sid, CKI *pcki);
	bool _FAddFileToThd(PCFL pcfl, long sid);
	bool _FBuildThd(PCRM pcrm);

	virtual bool _FAddGokdToThd(PCFL pcfl, long sid, KID *pkid);

public:
	static PBCL PbclNew(PCRM pcrm, CKI *pckiRoot, CTG ctgContent,
		PGL pglthd = pvNil, bool fOnlineOnly = fFalse);

	PGL Pglthd(void) { return _pglthd; }
	void GetThd(long ithd, THD *pthd) { _pglthd->Get(ithd, pthd); }
	long IthdMac(void) { return _pglthd->IvMac(); }
};

/* Browser Content List with Strings -- create one of these when you need to
	browse content by name */
#define BCLS_PAR BCL
typedef class BCLS *PBCLS;
#define kclsBCLS 'BCLS'
class BCLS : public BCLS_PAR
{
	RTCLASS_DEC
	ASSERT
	MARKMEM

protected:
	PGST _pgst;

protected:
	BCLS(void) { _pgst = pvNil; }
	~BCLS(void) { ReleasePpo(&_pgst); }

	bool _FInit(PCRM pcrm, CKI *pckiRoot, CTG ctgContent, PGST pgst, PGL pglthd);
	bool _FSetNameGst(PCFL pcfl, CTG ctg, CNO cno);

	virtual bool _FAddGokdToThd(PCFL pcfl, long sid, KID *pkid);

public:
	static PBCLS PbclsNew(PCRM pcrm, CKI *pckiRoot, CTG ctgContent,
		PGL pglthd = pvNil, PGST pgst = pvNil, bool fOnlineOnly = fFalse);

	PGST Pgst(void) { return _pgst; }
};


/************************************

   Browser List Class
   Derived from the Display Class

*************************************/
#define BRWL_PAR BRWD
#define kclsBRWL 'BRWL'
typedef class BRWL *PBRWL;

// Browser Selection Flags
// This specifies what the sorting is based on
enum BWS
	{
	kbwsIndex = 1,
	kbwsChid = 2,
	kbwsCnoRoot = 3,		// defaults to CnoRoot if ctg of Par is ctgNil
	kbwsLim
	};

class BRWL :  public BRWL_PAR
	{
	RTCLASS_DEC
	ASSERT
	MARKMEM

protected:
	bool _fEnableAccel;

	// Thumnail descriptor lists
	PCRM _pcrm; 		// Chunky resource manager
	PGL _pglthd;		// Thumbnail descriptor	gl
	PGST _pgst;			// Chunk name

	// Browser Search (List) parameters
	BWS _bws;			// Selection type flag
	bool _fSinglePar;	// Single parent search
	CKI _ckiRoot;		// Grandparent cno=cnoNil => global search
	CTG _ctgContent;		// Parent

protected:	

	// BRWL List
	bool _FInitNew(PCMD pcmd, BWS bws, long ThumSelect,	
		CKI ckiRoot, CTG ctgContent);
	bool _FCreateBuildThd(CKI ckiRoot, CTG ctgContent, bool fBuildGl = fTrue);
	virtual bool _FGetContent(PCRM pcrm, CKI *pcki, CTG ctg, bool fBuildGl);
	virtual long _Cthum(void) { AssertThis(0); return _pglthd->IvMac(); }
	virtual bool _FSetThumFrame(long ithd, PGOB pgobPar);
	virtual bool _FUpdateLists() { return fTrue; } 	// Eg, to include user sounds

	// BRWL util
	void _SortThd(void);
	virtual void _GetThumFromIthum(long ithum, void *pThumSelect, long *psid);
	virtual void _ReleaseThumFrame(long ifrm);
	virtual long _IthumFromThum(long thum, long sid);
	virtual void _CacheContext(void);
	virtual void _SetCbPcrmMin(void);

public:


	//
	// Constructors and destructors
	//	
	BRWL(PGCB pgcb) : BRWL_PAR(pgcb) {}
	~BRWL(void);

	static PBRWL PbrwlNew(PRCA prca, long kidPar, long kidBrwl);
	virtual bool FInit(PCMD pcmd, BWS bws, long ThumSelect,	long sidSelect,
		CKI ckiRoot, CTG ctgContent, PSTDIO pstdio, PBRCNL pbrcnl = pvNil,
		bool fWrapScroll = fTrue, long cthumScroll = ivNil);
	};


/************************************

   Browser Text Class
   Derived from the Display Class

*************************************/
#define BRWT_PAR BRWD
#define kclsBRWT 'BRWT'
typedef class BRWT *PBRWT;
class BRWT :  public BRWT_PAR
	{
	RTCLASS_DEC
	ASSERT
	MARKMEM

protected:
	PGST _pgst;
	bool _fEnableAccel;

	virtual long _Cthum(void) { AssertThis(0); return _pgst->IvMac(); }
	virtual bool _FSetThumFrame(long istn, PGOB pgobPar);
	virtual void _ReleaseThumFrame(long ifrm) {}  	// No gob to release

public:
	//
	// Constructors and destructors
	//	
	BRWT(PGCB pgcb) : BRWT_PAR(pgcb) { _idsFont = idsNil; }
	~BRWT(void);

	static PBRWT PbrwtNew(PRCA prca, long kidPar, long kidBrwt);
	void SetGst(PGST pgst);
	bool FInit(PCMD pcmd, long thumSelect, long thumDisplay, PSTDIO pstdio,
		bool fWrapScroll = fTrue, long cthumScroll = ivNil);
	};


/************************************

   Browser Named List Class
   Derived from the Browser List Class

*************************************/
#define BRWN_PAR BRWL
#define kclsBRWN 'BRWN'
typedef class BRWN *PBRWN;
class BRWN :  public BRWN_PAR
	{
	RTCLASS_DEC

protected:
	virtual bool _FGetContent(PCRM pcrm, CKI *pcki, CTG ctg, bool fBuildGl);
	virtual long _Cthum(void) { return _pglthd->IvMac(); }
	virtual bool _FSetThumFrame(long ithd, PGOB pgobPar);
	virtual void _ReleaseThumFrame(long ifrm);

public:
	//
	// Constructors and destructors
	//	
	BRWN(PGCB pgcb) : BRWN_PAR(pgcb) {}
	~BRWN(void) {};
	virtual bool FInit(PCMD pcmd, BWS bws, long ThumSelect,	long sidSelect,
		CKI ckiRoot, CTG ctgContent, PSTDIO pstdio, PBRCNL pbrcnl = pvNil,
		bool fWrapScroll = fTrue, long cthumScroll = ivNil);

	virtual bool FCmdOk(PCMD pcmd);
	};


/************************************

   Studio Specific Browser Classes

*************************************/
/************************************

   Browser Action Class
   Derived from the Browser Text Class
   Actions are separately classed for
   previews

*************************************/
#define BRWA_PAR BRWT
#define kclsBRWA 'BRWA'
typedef class BRWA *PBRWA;
class BRWA :  public BRWA_PAR
	{
	RTCLASS_DEC
	ASSERT
	MARKMEM

protected:
	long _celnStart;	// Starting cel number
	PAPE _pape; 	// Actor Preview Entity
	void _ProcessSelection(void);	// Action Preview
	virtual void _ApplySelection(long thumSelect, long sid);

public:
	//
	// Constructors and destructors
	//	
	BRWA(PGCB pgcb) : BRWA_PAR(pgcb) { _idsFont = idsActionFont; _celnStart = 0;}
	~BRWA(void) {}

	static PBRWA PbrwaNew(PRCA prca);
	bool FBuildApe(PACTR pactr);
	bool FBuildGst(PSCEN pscen);
	virtual bool FCmdChangeCel(PCMD pcmd);
	};


/************************************

   Browser Prop & Actor Class
   Derived from the Browser List Class

*************************************/
#define BRWP_PAR BRWL
#define kclsBRWP 'BRWP'
typedef class BRWP *PBRWP;
class BRWP :  public BRWP_PAR
	{
	RTCLASS_DEC

protected:
	virtual void _ApplySelection(long thumSelect, long sid);

public:
	//
	// Constructors and destructors
	//	
	BRWP(PGCB pgcb) : BRWP_PAR(pgcb) {}
	~BRWP(void) {};

	static PBRWP PbrwpNew(PRCA prca, long kidGlass);
	};


/************************************

   Browser Background Class
   Derived from the Browser List Class

*************************************/
#define BRWB_PAR BRWL
#define kclsBRWB 'BRWB'
typedef class BRWB *PBRWB;
class BRWB :  public BRWB_PAR
	{
	RTCLASS_DEC

protected:
	virtual void _ApplySelection(long thumSelect, long sid);

public:
	//
	// Constructors and destructors
	//	
	BRWB(PGCB pgcb) : BRWB_PAR(pgcb) {}
	~BRWB(void) {};

	static PBRWB PbrwbNew(PRCA prca);
	virtual bool FCmdCancel(PCMD pcmd);					
	};


/************************************

   Browser Camera Class
   Derived from the Browser List Class

*************************************/
#define BRWC_PAR BRWL
#define kclsBRWC 'BRWC'
typedef class BRWC *PBRWC;
class BRWC :  public BRWC_PAR
	{
	RTCLASS_DEC

protected:
	virtual void _ApplySelection(long thumSelect, long sid);
	virtual void _SetCbPcrmMin(void) {}

public:
	//
	// Constructors and destructors
	//	
	BRWC(PGCB pgcb) : BRWC_PAR(pgcb) {}
	~BRWC(void) {};

	static PBRWC PbrwcNew(PRCA prca);

	virtual bool FCmdCancel(PCMD pcmd);
	};


/************************************

   Browser Music Class (midi, speech & fx)
   Derived from the Browser Named List Class

*************************************/
#define BRWM_PAR BRWN
#define kclsBRWM 'brwm'
typedef class BRWM *PBRWM;
class BRWM :  public BRWM_PAR
	{
	RTCLASS_DEC

protected:
	long _sty;		// Identifies type of sound
	PCRF _pcrf;		// NOT created here (autosave or BRWI file)

	virtual void _ApplySelection(long thumSelect, long sid);
	virtual bool _FUpdateLists(); 	// By all entries in pcrf of correct type
	void _ProcessSelection(void);	// Sound Preview
	bool _FAddThd(STN *pstn, CKI *pcki);
	bool _FSndListed(CNO cno, long *pithd = pvNil);

public:
	//
	// Constructors and destructors
	//	
	BRWM(PGCB pgcb) : BRWM_PAR(pgcb) { _idsFont = idsSoundFont; }
	~BRWM(void) {};

	static PBRWM PbrwmNew(PRCA prca, long kidGlass, long sty, PSTDIO pstdio);
	virtual bool FCmdFile(PCMD pcmd);		// Upon portfolio completion
	virtual bool FCmdDel(PCMD pcmd);		// Delete user sound
	};


/************************************

   Browser Import Sound Class
   Derived from the Browser List Class
   Note: Inherits pgst from the list class

*************************************/
#define BRWI_PAR BRWM
#define kclsBRWI 'BRWI'
typedef class BRWI *PBRWI;
class BRWI :  public BRWI_PAR
	{
	RTCLASS_DEC
	ASSERT
	MARKMEM

protected:
	// The following are already handled by BRWM
	//virtual void _ProcessSelection(void);	
	virtual void _ApplySelection(long thumSelect, long sid);

public:
	//
	// Constructors and destructors
	//	
	BRWI(PGCB pgcb) : BRWI_PAR(pgcb) { _idsFont = idsSoundFont; }
	~BRWI(void);

	static PBRWI PbrwiNew(PRCA prca, long kidGlass, long sty);
	bool FInit(PCMD pcmd, CKI cki, PSTDIO pstdio);
	};


/************************************

   Browser Roll Call Class
   Derived from the Display Class

*************************************/
#define BRWR_PAR BRWD
#define kclsBRWR 'BRWR'
typedef class BRWR *PBRWR;
class BRWR :  public BRWR_PAR
	{
	RTCLASS_DEC
	ASSERT
	MARKMEM

protected:
	CTG _ctg;
	PCRM _pcrm; 		// Chunky resource manager
	bool _fApplyingSel;

protected:
	virtual long _Cthum(void);
	virtual bool _FSetThumFrame(long istn, PGOB pgobPar);
	virtual void _ReleaseThumFrame(long ifrm);
	virtual void _ApplySelection(long thumSelect, long sid);
	virtual void _ProcessSelection(void);
	virtual bool _FClearHelp(long ifrm);
	long _IaridFromIthum(long ithum, long iaridFirst = 0);
	long _IthumFromArid(long arid);

public:
	//
	// Constructors and destructors
	//	
	BRWR(PGCB pgcb) : BRWR_PAR(pgcb) { _fApplyingSel = fFalse; _idsFont = idsRollCallFont;}
	~BRWR(void);

	static PBRWR PbrwrNew(PRCA prca, long kid);
	void Init(PCMD pcmd, long thumSelect, long thumDisplay, PSTDIO pstdio,
		bool fWrapScroll = fTrue, long cthumScroll = ivNil);
	bool FInit(PCMD pcmd, CTG ctg, long ithumDisplay, PSTDIO pstdio);
	bool FUpdate(long arid, PSTDIO pstdio);
	bool FApplyingSel(void) { AssertBaseThis(0); return _fApplyingSel; }
	};

const long kglcmgGrow = 8;
struct CMG			// Gokd Cno Map
	{
	CNO cnoTmpl;	// Content cno
	CNO cnoGokd;	// Thumbnail gokd cno
	};


/************************************

   Fne for  Thumbnails
   Enumerates current product first

*************************************/
#define FNET_PAR BASE
#define kclsFNET 'FNET'
typedef class FNET *PFNET;
class FNET :  public FNET_PAR
	{
	RTCLASS_DEC

protected:
	bool _fInitMSKDir;
	FNE	_fne;
	FNE _fneDir;
	FNI _fniDirMSK;
	FNI _fniDir;
	FNI _fniDirProduct;
	bool _fInited;

protected:
	bool _FNextFni(FNI *pfni, long *psid);

public:
	//
	// Constructors and destructors
	//	
	FNET(void) : FNET_PAR() {_fInited = fFalse;}
	~FNET(void) {};

	bool FInit(void);
	bool FNext(FNI *pfni, long *psid = pvNil);
	};



#endif