/*
Copyright (C) 1997-2001 Id Software, Inc.

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.

*/

#include "com_local.h"
#include "q_list.h"
#include "q_field.h"
#include "ref_public.h"
#include "key_public.h"
#include "snd_public.h"
#include "cl_public.h"
#include "ui_public.h"

#define UI_Malloc( s )      Z_TagMalloc( s, TAG_UI )
#define UI_Mallocz( s )     Z_TagMallocz( s, TAG_UI )
#define UI_CopyString( s )  Z_TagCopyString( s, TAG_UI )

#define MAXMENUITEMS    64

typedef enum {
    MTYPE_BAD,
    MTYPE_SLIDER,
    MTYPE_LIST,
    MTYPE_ACTION,
    MTYPE_SPINCONTROL,
    MTYPE_SEPARATOR,
    MTYPE_FIELD,
    MTYPE_BITFIELD,
    MTYPE_PAIRS,
    MTYPE_STRINGS,
    MTYPE_VALUES,
    MTYPE_TOGGLE,
    MTYPE_STATIC,
    MTYPE_KEYBIND
} menuType_t;

#define QMF_LEFT_JUSTIFY    0x00000001
#define QMF_GRAYED          0x00000002
#define QMF_NUMBERSONLY     0x00000004
#define QMF_HASFOCUS        0x00000008
#define QMF_HIDDEN          0x00000010
#define QMF_DISABLED        0x00000020
#define QMF_CUSTOM_COLOR    0x00000040

typedef enum {
    QMS_NOTHANDLED,
    QMS_SILENT,
    QMS_IN,
    QMS_MOVE,
    QMS_OUT,
    QMS_BEEP
} menuSound_t;

#define RCOLUMN_OFFSET  16
#define LCOLUMN_OFFSET -16

#define    MENU_SPACING    12

#define DOUBLE_CLICK_DELAY    300

#define UI_IsItemSelectable( item ) \
    ( (item)->type != MTYPE_SEPARATOR && \
    (item)->type != MTYPE_STATIC && \
    !( (item)->flags & (QMF_GRAYED|QMF_HIDDEN|QMF_DISABLED) ) )

typedef void (*confirmAction_t)( qboolean );

typedef struct menuFrameWork_s {
    list_t  entry;

    char    *name, *title, *status;

    int     nitems;
    void    *items[MAXMENUITEMS];

    qboolean transparent;
    qboolean keywait;

    qhandle_t image;
    color_t color;
    int y1, y2;

    qboolean (*push)( struct menuFrameWork_s * );
    void (*pop)( struct menuFrameWork_s * );
    void (*expose)( struct menuFrameWork_s * );
    void (*draw)( struct menuFrameWork_s * );
    void (*size)( struct menuFrameWork_s * );
    void (*free)( struct menuFrameWork_s * );
    menuSound_t (*keydown)( struct menuFrameWork_s *, int );
} menuFrameWork_t;

typedef struct menuCommon_s {
    menuType_t type;
    int id;
    char *name;
    menuFrameWork_t *parent;
    color_t color;
    vrect_t rect;
    char *status;

    int x, y;
    int width, height;

    int flags;
    int uiFlags;

    menuSound_t (*activate)( struct menuCommon_s * );
    menuSound_t (*change)( struct menuCommon_s * );
    menuSound_t (*keydown)( struct menuCommon_s *, int key );
    menuSound_t (*focus)( struct menuCommon_s *, qboolean gain );
} menuCommon_t;

typedef struct menuField_s {
    menuCommon_t generic;
    inputField_t field;
    cvar_t *cvar;
    int width;
} menuField_t;

#define SLIDER_RANGE 10

typedef struct menuSlider_s {
    menuCommon_t generic;
    cvar_t *cvar;

    float minvalue;
    float maxvalue;
    float curvalue;
    float step;
} menuSlider_t;

#define MAX_COLUMNS     8

#define MLIST_SPACING           10
#define MLIST_BORDER_WIDTH      1
#define MLIST_SCROLLBAR_WIDTH   10
#define MLIST_PRESTEP           3

typedef enum {
    MLF_NOSELECT                = ( 1 << 0 ),
    MLF_HIDE_SCROLLBAR          = ( 1 << 1 ),
    MLF_HIDE_SCROLLBAR_EMPTY    = ( 1 << 2 ),
    MLF_HIDE_BACKGROUND         = ( 1 << 3 ),
    MLF_HIDE_HEADER             = ( 1 << 4 )
} menuListFlags_t;

typedef struct menuListColumn_s {
    char *name;
    int width;
    int uiFlags;
} menuListColumn_t;

typedef struct menuList_s {
    menuCommon_t generic;

    void        **items;
    int         numItems;
    int         maxItems;
    menuListFlags_t mlFlags;
    int         extrasize;

    int        prestep;
    int        curvalue;
    int        clickTime;

    char    scratch[8];
    int     scratchCount;
    int     scratchTime;

    menuListColumn_t    columns[MAX_COLUMNS];
    int                 numcolumns;
    int                 sortdir, sortcol;

    menuSound_t (*sort)( struct menuList_s *, int column );
} menuList_t;

typedef struct menuSpinControl_s {
    menuCommon_t generic;
    cvar_t *cvar;

    char    **itemnames;
    char    **itemvalues;
    int     numItems;
    int     curvalue;

    int         mask;
    qboolean    negate;
} menuSpinControl_t;

typedef struct menuAction_s {
    menuCommon_t generic;
    char *cmd;
} menuAction_t;

typedef struct menuSeparator_s {
    menuCommon_t generic;
} menuSeparator_t;

typedef struct menuStatic_s {
    menuCommon_t    generic;
    int             maxChars;
} menuStatic_t;

typedef struct menuKeybind_s {
    menuCommon_t    generic;
    char            binding[32];
    char            altbinding[32];
    char            *cmd;
} menuKeybind_t;

#define MAX_PLAYERMODELS 32

typedef struct playerModelInfo_s {
    int nskins;
    char **skindisplaynames;
    char **weaponNames;
    int numWeapons;
    char directory[MAX_QPATH];
} playerModelInfo_t;

void PlayerModel_Load( void );
void PlayerModel_Free( void );

#define    MAX_MENU_DEPTH    8

typedef struct uiStatic_s {
    qboolean initialized;
    int realtime;
    glconfig_t glconfig;
    clipRect_t clipRect;
    int width, height; // scaled
    float scale;
    int menuDepth;
    menuFrameWork_t *layers[MAX_MENU_DEPTH];
    menuFrameWork_t *activeMenu;
    int mouseCoords[2];
    qboolean entersound;        // play after drawing a frame, so caching
                                // won't disrupt the sound
    qboolean transparent;
    int numPlayerModels;
    playerModelInfo_t pmi[MAX_PLAYERMODELS];

    qhandle_t backgroundHandle;
    qhandle_t fontHandle;
    qhandle_t cursorHandle;
    int cursorWidth, cursorHeight;

    struct {
        color_t background;
        color_t normal;
        color_t active;
        color_t selection;
        color_t disabled;
    } color;
} uiStatic_t;

extern uiStatic_t   uis;

extern list_t       ui_menus;

extern cvar_t       *ui_debug;

void        UI_PushMenu( menuFrameWork_t *menu );
void        UI_ForceMenuOff( void );
void        UI_PopMenu( void );
qboolean    UI_DoHitTest( void );
qboolean    UI_CursorInRect( vrect_t *rect );
void        *UI_FormatColumns( int extrasize, ... ) q_sentinel;
char        *UI_GetColumn( char *s, int n );
void        UI_AddToServerList( const serverStatus_t *status );
void        UI_DrawLoading( int realtime );
void        UI_SetupDefaultBanner( menuStatic_t *banner, const char *name );
void        UI_DrawString( int x, int y, const color_t color, int flags, const char *string );
void        UI_DrawChar( int x, int y, int flags, int ch );
void        UI_DrawRect( const vrect_t *rect, int border, int color );
void        UI_DrawRectEx( const vrect_t *rect, int border, const color_t color );
void        UI_StringDimensions( vrect_t *rc, int flags, const char *string );

void        UI_LoadStript( void );
void        UI_FreeStript( void );
menuFrameWork_t *UI_FindMenu( const char *name );

void        Menu_Init( menuFrameWork_t *menu );
void        Menu_Size( menuFrameWork_t *menu );
void        Menu_Draw( menuFrameWork_t *menu );
void        Menu_AddItem( menuFrameWork_t *menu, void *item );
menuSound_t Menu_SelectItem( menuFrameWork_t *menu );
menuSound_t Menu_SlideItem( menuFrameWork_t *menu, int dir );
menuSound_t Menu_KeyEvent( menuCommon_t *item, int key );
menuSound_t Menu_CharEvent( menuCommon_t *item, int key );
menuSound_t Menu_MouseMove( menuCommon_t *item );
menuSound_t Menu_Keydown( menuFrameWork_t *menu, int key );
void        Menu_SetFocus( menuCommon_t *item );
menuSound_t     Menu_AdjustCursor( menuFrameWork_t *menu, int dir );
menuCommon_t    *Menu_ItemAtCursor( menuFrameWork_t *menu );
menuCommon_t    *Menu_HitTest( menuFrameWork_t *menu );
void        MenuList_Init( menuList_t *l );
void        MenuList_SetValue( menuList_t *l, int value );
void        MenuList_Sort( menuList_t *l, int offset,
                int (*cmpfunc)( const void *, const void * ) );
qboolean    Menu_Push( menuFrameWork_t *menu );
void        Menu_Pop( menuFrameWork_t *menu );
void        Menu_Free( menuFrameWork_t *menu );

void M_Menu_Error( error_type_t type, const char *text );
void M_Menu_Confirm( const char *text, confirmAction_t action );
void M_Menu_PlayerConfig( void );
void M_Menu_Demos( void );
void M_Menu_Servers( void );