/*

Miranda NG: the free IM client for Microsoft* Windows*

Copyright (c) 2012-17 Miranda NG project (https://miranda-ng.org)
Copyright (c) 2000-08 Miranda ICQ/IM project,
all portions of this codebase are copyrighted to the people
listed in contributors.txt.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#ifndef M_CLISTINT_H__
#define M_CLISTINT_H__ 1

#include <CommCtrl.h>

#ifndef M_CLIST_H__
#include <m_clist.h>
#endif 

#include <m_system_cpp.h>
#include <m_protocols.h>
#include <m_clc.h>

#define HCONTACT_ISGROUP    0x80000000
#define HCONTACT_ISINFO     0xFFFF0000
#define IsHContactGroup(h)  (((UINT_PTR)(h)^HCONTACT_ISGROUP)<(HCONTACT_ISGROUP^HCONTACT_ISINFO))
#define IsHContactInfo(h)   (((UINT_PTR)(h)&HCONTACT_ISINFO) == HCONTACT_ISINFO)
#define IsHContactContact(h) (((UINT_PTR)(h)&HCONTACT_ISGROUP) == 0)

#ifndef EXTRA_ICON_COUNT
#define EXTRA_ICON_COUNT 10
#endif

#define MAX_TIP_SIZE 2048

#define INTM_NAMECHANGED     (WM_USER+10)
#define INTM_ICONCHANGED     (WM_USER+11)
#define INTM_GROUPCHANGED    (WM_USER+12)
#define INTM_GROUPSCHANGED   (WM_USER+13)
#define INTM_CONTACTADDED    (WM_USER+14)
#define INTM_CONTACTDELETED  (WM_USER+15)
#define INTM_HIDDENCHANGED   (WM_USER+16)
#define INTM_INVALIDATE      (WM_USER+17)
#define INTM_APPARENTMODECHANGED (WM_USER+18)
#define INTM_SETINFOTIPHOVERTIME (WM_USER+19)
#define INTM_NOTONLISTCHANGED   (WM_USER+20)
#define INTM_RELOADOPTIONS   (WM_USER+21)
#define INTM_NAMEORDERCHANGED (WM_USER+22)
#define INTM_IDLECHANGED         (WM_USER+23)
#define INTM_SCROLLBARCHANGED (WM_USER+24)
#define INTM_PROTOCHANGED (WM_USER+25)

#define TIMERID_RENAME           10
#define TIMERID_DRAGAUTOSCROLL   11
#define TIMERID_INFOTIP          13
#define TIMERID_REBUILDAFTER     14
#define TIMERID_DELAYEDRESORTCLC 15
#define TIMERID_TRAYHOVER        16
#define TIMERID_TRAYHOVER_2      17

#define GROUP_ALLOCATE_STEP  8

struct ClcContact;
struct ClcData;
struct ClcCacheEntry;

struct ClcGroup : public MZeroedObject
{
	__forceinline ClcGroup(int _limit) :
		cl(_limit)
	{}

	LIST<ClcContact> cl;
	int expanded, hideOffline, groupId;
	ClcGroup *parent;
	int scanIndex;
	int totalMembers;
};

struct ClcFontInfo
{
	HFONT hFont;
	int fontHeight, changed;
	COLORREF colour;
};

struct ClcContactBase
{
	BYTE type;
	BYTE flags;
	union {
		struct {
			int iImage;
			MCONTACT hContact;
		};
		struct {
			WORD groupId;
			ClcGroup *group;
		};
	};
	WORD  iExtraImage[EXTRA_ICON_COUNT];
	wchar_t szText[120-EXTRA_ICON_COUNT];
	char *proto; // MS_PROTO_GETBASEPROTO
	ClcCacheEntry *pce; // cache is persistent, contacts aren't
};

struct ClcDataBase : public MZeroedObject
{
	__forceinline ClcDataBase() :
		list(50)
	{}

	ClcGroup list;
	int rowHeight;
	int yScroll;
	int selection;
	ClcFontInfo fontInfo[FONTID_MAX + 1];
	int scrollTime;
	HIMAGELIST himlHighlight;
	int groupIndent;
	wchar_t szQuickSearch[128];
	int iconXSpace;
	HWND hwndRenameEdit;
	COLORREF bkColour, selBkColour, selTextColour, hotTextColour, quickSearchColour;
	int iDragItem, iInsertionMark;
	int dragStage;
	POINT ptDragStart;
	int dragAutoScrolling;
	int dragAutoScrollHeight;
	int leftMargin;
	int insertionMarkHitHeight;
	HBITMAP hBmpBackground;
	int backgroundBmpUse, bkChanged;
	int iHotTrack;
	int gammaCorrection;
	DWORD greyoutFlags;			  //see m_clc.h
	DWORD offlineModes;
	DWORD exStyle;
	POINT ptInfoTip;
	int infoTipTimeout;
	DWORD hInfoTipItem;
	HIMAGELIST himlExtraColumns;
	int extraColumnsCount;
	int extraColumnSpacing;
	int checkboxSize;
	bool bShowSelAlways, bShowIdle, bNoVScrollbar, bUseWindowsColours;
	bool bNeedsResort, bFilterSearch, bLockScrollbar;
};

struct CListEvent : public CLISTEVENT, public MZeroedObject
{
	~CListEvent()
	{
		mir_free(pszService);
		mir_free(szTooltip.a);
	}

	int imlIconIndex;
	int flashesDone;

	int menuId;
	int imlIconOverlayIndex;
};

struct trayIconInfo_t
{
	int    id;
	char*  szProto;
	HICON  hBaseIcon;
	int    isBase;
	wchar_t* ptszToolTip;
};

struct MenuProto
{
	char *szProto; //This is DLL-based unique name
	HGENMENU pMenu;
	HICON hIcon;
};

/////////////////////////////////////////////////////////////////////////////////////////
// constants

#define DRAGSTAGE_NOTMOVED  0
#define DRAGSTAGE_ACTIVE    1
#define DRAGSTAGEM_STAGE    0x00FF
#define DRAGSTAGEF_MAYBERENAME  0x8000
#define DRAGSTAGEF_OUTSIDE      0x4000

#define CONTACTF_ONLINE    1
#define CONTACTF_INVISTO   2
#define CONTACTF_VISTO     4
#define CONTACTF_NOTONLIST 8
#define CONTACTF_CHECKED   16
#define CONTACTF_IDLE      32

#define DROPTARGET_OUTSIDE    0
#define DROPTARGET_ONSELF     1
#define DROPTARGET_ONNOTHING  2
#define DROPTARGET_ONGROUP    3
#define DROPTARGET_ONCONTACT  4
#define DROPTARGET_INSERTION  5

#define CLCDEFAULT_ROWHEIGHT     16
#define CLCDEFAULT_EXSTYLE       (CLS_EX_EDITLABELS|CLS_EX_TRACKSELECT|CLS_EX_SHOWGROUPCOUNTS|CLS_EX_HIDECOUNTSWHENEMPTY|CLS_EX_TRACKSELECT|CLS_EX_NOTRANSLUCENTSEL)  //plus CLS_EX_NOSMOOTHSCROLL is got from the system
#define CLCDEFAULT_SCROLLTIME    150
#define CLCDEFAULT_GROUPINDENT   5
#define CLCDEFAULT_BKCOLOUR      GetSysColor(COLOR_3DFACE)
#define CLCDEFAULT_USEBITMAP     0
#define CLCDEFAULT_BKBMPUSE      CLB_STRETCH
#define CLCDEFAULT_OFFLINEMODES  MODEF_OFFLINE
#define CLCDEFAULT_GREYOUTFLAGS  0
#define CLCDEFAULT_FULLGREYOUTFLAGS  (MODEF_OFFLINE|PF2_INVISIBLE|GREYF_UNFOCUS)
#define CLCDEFAULT_SELBLEND      1
#define CLCDEFAULT_SELBKCOLOUR   GetSysColor(COLOR_HIGHLIGHT)
#define CLCDEFAULT_TEXTCOLOUR    GetSysColor(COLOR_WINDOWTEXT)
#define CLCDEFAULT_SELTEXTCOLOUR GetSysColor(COLOR_HIGHLIGHTTEXT)
#define CLCDEFAULT_HOTTEXTCOLOUR RGB(0, 0, 255)
#define CLCDEFAULT_QUICKSEARCHCOLOUR RGB(255, 255, 0)
#define CLCDEFAULT_LEFTMARGIN    0
#define CLCDEFAULT_RIGHTMARGIN   2
#define CLCDEFAULT_GAMMACORRECT  1
#define CLCDEFAULT_SHOWIDLE      1
#define CLCDEFAULT_USEWINDOWSCOLOURS 0

#define TRAYICON_ID_BASE    100
#define TIM_CALLBACK   (WM_USER+1857)
#define TIM_CREATE     (WM_USER+1858)

/////////////////////////////////////////////////////////////////////////////////////////
// functions

EXTERN_C MIR_APP_DLL(DWORD) Clist_ContactToHItem(ClcContact *contact);
EXTERN_C MIR_APP_DLL(HANDLE) Clist_ContactToItemHandle(ClcContact *contact, DWORD *nmFlags);

EXTERN_C MIR_APP_DLL(void) Clist_Broadcast(int msg, WPARAM wParam, LPARAM lParam);
EXTERN_C MIR_APP_DLL(void) Clist_BroadcastAsync(int msg, WPARAM wParam, LPARAM lParam);

EXTERN_C MIR_APP_DLL(bool) Clist_FindItem(HWND hwnd, ClcData *dat, DWORD dwItem, ClcContact **contact, ClcGroup **subgroup, int *isVisible);

/////////////////////////////////////////////////////////////////////////////////////////
// CLIST_INTERFACE structure definition

struct ClcProtoStatus
{
	char *szProto;
	DWORD dwStatus;
};

struct ClcCacheEntryBase
{
	MCONTACT hContact;
	wchar_t* tszName;
	wchar_t* tszGroup;
	int    bIsHidden;
};

struct CLIST_INTERFACE
{
	int version;

	HWND hwndContactList, hwndContactTree, hwndStatus;
	HMENU hMenuMain;
	HMODULE hInst;

	int hClcProtoCount;
	ClcProtoStatus *clcProto;

	/* clc.h */
	void  (*pfnClcOptionsChanged)(void);
	void  (*pfnUnused1)();
	HMENU (*pfnBuildGroupPopupMenu)(struct ClcGroup*); // unused

	LRESULT (CALLBACK *pfnContactListControlWndProc)(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);

	/* clcfiledrop.c */
	void (*pfnRegisterFileDropping)(HWND hwnd);
	void (*pfnUnregisterFileDropping)(HWND hwnd);

	/* clcidents.c */
	ClcContact* (*pfnFindItem)(DWORD dwItem, ClcContact *contact);

	int (*pfnGetRowsPriorTo)(ClcGroup *group, ClcGroup *subgroup, int contactIndex);
	int (*pfnGetRowByIndex)(ClcData *dat, int testindex, ClcContact **contact, ClcGroup **subgroup);
	int (*pfnGetContactHiddenStatus)(MCONTACT hContact, char *szProto, ClcData *dat);
	int (*pfnIsVisibleContact)(ClcCacheEntry *pce, ClcGroup *group);

	/* clcitems.c */
	ClcContact* (*pfnCreateClcContact)(void);
	struct ClcGroup* (*pfnAddGroup)(HWND hwnd, ClcData *dat, const wchar_t *szName, DWORD flags, int groupId, int calcTotalMembers);
	struct ClcGroup* (*pfnRemoveItemFromGroup)(HWND hwnd, ClcGroup *group, ClcContact *contact, int updateTotalCount);

	void (*pfnFreeContact)(ClcContact *contact);
	void (*pfnFreeGroup)(ClcGroup *group);

	ClcContact* (*pfnAddInfoItemToGroup)(ClcGroup *group, int flags, const wchar_t *pszText);
	ClcContact* (*pfnAddItemToGroup)(ClcGroup *group, int iAboveItem);
	ClcContact* (*pfnAddContactToGroup)(ClcData *dat, ClcGroup *group, MCONTACT hContact);
	
	void (*pfnAddContactToTree)(HWND hwnd, ClcData *dat, MCONTACT hContact, int updateTotalCount, int checkHideOffline);
	void (*pfnDeleteItemFromTree)(HWND hwnd, MCONTACT hItem);
	void (*pfnRebuildEntireList)(HWND hwnd, ClcData *dat);
	int  (*pfnGetGroupContentsCount)(ClcGroup *group, int visibleOnly);
	void (*pfnSortCLC)(HWND hwnd, ClcData *dat, int useInsertionSort);
	void (*pfnSaveStateAndRebuildList)(HWND hwnd, ClcData *dat);

	/* clcmsgs.c */
	LRESULT (*pfnProcessExternalMessages)(HWND hwnd, ClcData *dat, UINT msg, WPARAM wParam, LPARAM lParam);

	/* clcpaint.c */
	void  (*pfnPaintClc)(HWND hwnd, ClcData *dat, HDC hdc, RECT * rcPaint);

	/* clcutils.c */
	wchar_t* (*pfnGetGroupCountsText)(ClcData *dat, ClcContact *contact);
	int   (*pfnHitTest)(HWND hwnd, ClcData *dat, int testx, int testy, ClcContact **contact, ClcGroup **group, DWORD * flags);
	void  (*pfnScrollTo)(HWND hwnd, ClcData *dat, int desty, int noSmooth);
	void  (*pfnEnsureVisible)(HWND hwnd, ClcData *dat, int iItem, int partialOk);
	void  (*pfnRecalcScrollBar)(HWND hwnd, ClcData *dat);
	void  (*pfnSetGroupExpand)(HWND hwnd, ClcData *dat, ClcGroup *group, int newState);
	void  (*pfnDoSelectionDefaultAction)(HWND hwnd, ClcData *dat);
	int   (*pfnFindRowByText)(HWND hwnd, ClcData *dat, const wchar_t *text, int prefixOk);
	void  (*pfnEndRename)(HWND hwnd, ClcData *dat, int save);
	void  (*pfnDeleteFromContactList)(HWND hwnd, ClcData *dat);
	void  (*pfnBeginRenameSelection)(HWND hwnd, ClcData *dat);
	void  (*pfnCalcEipPosition)(ClcData *dat, ClcContact *contact, ClcGroup *group, POINT *result);
	int   (*pfnGetDropTargetInformation)(HWND hwnd, ClcData *dat, POINT pt);
	int   (*pfnClcStatusToPf2)(int status);
	int   (*pfnIsHiddenMode)(ClcData *dat, int status);
	void  (*pfnHideInfoTip)(HWND hwnd, ClcData *dat);
	void  (*pfnNotifyNewContact)(HWND hwnd, MCONTACT hContact);
	DWORD (*pfnGetDefaultExStyle)(void);
	void  (*pfnGetDefaultFontSetting)(int i, LOGFONT* lf, COLORREF* colour);
	void  (*pfnGetFontSetting)(int i, LOGFONT* lf, COLORREF* colour);
	void  (*pfnLoadClcOptions)(HWND hwnd, ClcData *dat, BOOL bFirst);
	void  (*pfnRecalculateGroupCheckboxes)(HWND hwnd, ClcData *dat);
	void  (*pfnSetGroupChildCheckboxes)(ClcGroup *group, int checked);
	void  (*pfnInvalidateItem)(HWND hwnd, ClcData *dat, int iItem);

	int   (*pfnGetRowBottomY)(ClcData *dat, int item);
	int   (*pfnGetRowHeight)(ClcData *dat, int item);
	int   (*pfnGetRowTopY)(ClcData *dat, int item);
	int   (*pfnGetRowTotalHeight)(ClcData *dat);
	int   (*pfnRowHitTest)(ClcData *dat, int y);

	/* clistevents.c */
	int   (*pfnEventsProcessContactDoubleClick)(MCONTACT hContact);
	int   (*pfnEventsProcessTrayDoubleClick)(int);

	/* clistmod.c */
	int    (*pfnIconFromStatusMode)(const char *szProto, int status, MCONTACT hContact);
	int    (*pfnShowHide)(void);
	
	#define GSMDF_UNTRANSLATED 4 // don't tranlate the result
	wchar_t* (*pfnGetStatusModeDescription)(int mode, int flags);

	/* clistsettings.c */
	ClcCacheEntry* (*pfnGetCacheEntry)(MCONTACT hContact);
	ClcCacheEntry* (*pfnCreateCacheItem)(MCONTACT hContact);
	void           (*pfnCheckCacheItem)(ClcCacheEntry*);
	void           (*pfnFreeCacheItem)(ClcCacheEntry*);

	#define GCDNF_NOMYHANDLE 1 // will never return the user's custom name
	#define GCDNF_NOCACHE    4 // will not use the cache

	wchar_t* (*pfnGetContactDisplayName)(MCONTACT hContact, int mode);
	void   (*pfnInvalidateDisplayNameCacheEntry)(MCONTACT hContact);

	/* clisttray.c */
	void (*pfnTrayIconUpdateWithImageList)(int iImage, const wchar_t *szNewTip, char *szPreferredProto);
	void (*pfnTrayIconUpdateBase)(const char *szChangedProto);
	void (*pfnTrayIconSetToBase)(char *szPreferredProto);
	void (*pfnTrayIconIconsChanged)(void);
	int  (*pfnTrayIconPauseAutoHide)(WPARAM wParam, LPARAM lParam);
	INT_PTR (*pfnTrayIconProcessMessage)(WPARAM wParam, LPARAM lParam);
	int (*blablabla5)();

	/* clui.c */
	LRESULT (CALLBACK *pfnContactListWndProc)(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);

	void (*pfnCluiProtocolStatusChanged)(int status, const char *szProto);
	void (*pfnDrawMenuItem)(LPDRAWITEMSTRUCT, HICON, HICON);
	void (*pfnLoadCluiGlobalOpts)(void);
	BOOL (*pfnInvalidateRect)(HWND hwnd, CONST RECT* lpRect, BOOL bErase);
	void (*pfnOnCreateClc)(void);

	/* contact.c */
	void (*pfnChangeContactIcon)(MCONTACT hContact, int iIcon);
	void (*pfnLoadContactTree)(void);
	int  (*pfnCompareContacts)(const ClcContact *contact1, const ClcContact *contact2);
	int  (*pfnSetHideOffline)(int newValue); // TRUE, FALSE or -1 to revert the current setting

	/* docking.c */
	int (*pfnDocking_ProcessWindowMessage)(WPARAM wParam, LPARAM lParam);

	int   (*blablabla1)();
	int   (*blablabla2)();
	int   (*blablabla3)();
	int   (*blablabla4)();

	/*************************************************************************************
	 * version 2 - events processing
	 *************************************************************************************/

	OBJLIST<CListEvent> *events;

	struct CListEvent* (*pfnAddEvent)(CLISTEVENT*);
	CLISTEVENT* (*pfnGetEvent)(MCONTACT hContact, int idx);

	int   (*pfnRemoveEvent)(MCONTACT hContact, MEVENT hDbEvent);
	int   (*pfnGetImlIconIndex)(HICON hIcon);

	/*************************************************************************************
	 * version 3 additions
	 *************************************************************************************/

	int   (*pfnGetWindowVisibleState)(HWND hWnd, int iStepX, int iStepY);

	/*************************************************************************************
	 * version 4 additions (0.7.0.x) - genmenu
	 *************************************************************************************/

	MenuProto* menuProtos;
	int        menuProtoCount;

	HANDLE hPreBuildStatusMenuEvent;
	int    currentStatusMenuItem, currentDesiredStatusMode;
	BOOL   bDisplayLocked, bAutoRebuild;

	HGENMENU (*pfnGetProtocolMenu)(const char*);
	int      (*pfnStub2)(int);

	int    (*pfnGetProtocolVisibility)(const char*);
	int    (*pfnGetProtoIndexByPos)(PROTOCOLDESCRIPTOR** proto, int protoCnt, int Pos);
	void   (*pfnReloadProtoMenus)(void);

	/*************************************************************************************
	 * version 5 additions (0.7.0.x) - tray icons
	 *************************************************************************************/

	struct   trayIconInfo_t* trayIcon;
	int      trayIconCount;
	int      shellVersion;
	UINT_PTR cycleTimerId;
	int      cycleStep;
	wchar_t*   szTip;
	BOOL     bTrayMenuOnScreen;

	HICON  (*pfnGetIconFromStatusMode)(MCONTACT hContact, const char *szProto, int status);

	void   (*pfnInitTray)(void);
	void   (*pfnUninitTray)(void);

	int    (*pfnTrayIconAdd)(HWND hwnd, const char *szProto, const char *szIconProto, int status);
	int    (*pfnTrayIconDestroy)(HWND hwnd);
	int    (*pfnTrayIconInit)(HWND hwnd);
	wchar_t* (*pfnTrayIconMakeTooltip)(const wchar_t *szPrefix, const char *szProto);
	void   (*pfnTrayIconRemove)(HWND hwnd, const char *szProto);
	int    (*pfnTrayIconSetBaseInfo)(HICON hIcon, const char *szPreferredProto);
	void   (*pfnTrayIconTaskbarCreated)(HWND hwnd);
	int    (*pfnTrayIconUpdate)(HICON hNewIcon, const wchar_t *szNewTip, const char *szPreferredProto, int isBase);

	VOID   (CALLBACK *pfnTrayCycleTimerProc)(HWND hwnd, UINT message, UINT_PTR idEvent, DWORD dwTime);

	/*************************************************************************************
	 * version 6 additions (0.8.0.x) - accounts
	 *************************************************************************************/
	int    (*pfnGetAccountIndexByPos)(int pos);

	/*************************************************************************************
	 * version 7 additions (0.11.0.x) - extra images
	 *************************************************************************************/
	void   (*pfnReloadExtraIcons)(void);
	void   (*pfnSetAllExtraIcons)(MCONTACT hContact);

	/*************************************************************************************
	 * Miranda NG additions
	 *************************************************************************************/
	int    (*pfnGetContactIcon)(MCONTACT hContact);
	int    (*pfnTrayCalcChanged)(const char *szChangedProto, int averageMode, int iProtoCount);
	int    (*pfnGetAverageMode)(int *pNetProtoCount);
	void   (*pfnInitAutoRebuild)(HWND hwnd);
	void   (*pfnSetContactCheckboxes)(ClcContact *cc, int checked);
};

// retrieves the pointer to a CLIST_INTERFACE structure
// NOTE: valid only for the clist clone building, not for the regular use

EXTERN_C MIR_APP_DLL(CLIST_INTERFACE*) Clist_GetInterface(void);

#ifndef MIR_APP_EXPORTS
	extern CLIST_INTERFACE *pcli;
#endif
#endif // M_CLISTINT_H__