#ifndef ROOT_TGListView
#define ROOT_TGListView

//+SEQ,CopyRight,T=NOINCLUDE.

//////////////////////////////////////////////////////////////////////////
//                                                                      //
// TGListView, TGLVContainer and TGLVEntry                              //
//                                                                      //
// A list view is a widget that can contain a number of items           //
// arranged in a grid or list. The items can be represented either      //
// by a string or by an icon.                                           //
//                                                                      //
// The TGListView is user callable. The other classes are service       //
// classes of the list view.                                            //
//                                                                      //
// A list view can generate the following events:                       //
// kC_CONTAINER, kCT_SELCHANGED, total items, selected items.           //
// kC_CONTAINER, kCT_ITEMCLICK, which button, location (y<<16|x).       //
// kC_CONTAINER, kCT_ITEMDBLCLICK, which button, location (y<<16|x).    //
//                                                                      //
//////////////////////////////////////////////////////////////////////////

#ifndef ROOT_TGCanvas
//*KEEP,TGCanvas.
#include "TGCanvas.h"
//*KEND.
#endif
#ifndef ROOT_TGWidget
//*KEEP,TGWidget.
#include "TGWidget.h"
//*KEND.
#endif


enum EListViewMode {
   kLVLargeIcons,
   kLVSmallIcons,
   kLVList,
   kLVDetails
};


class TGSelectedPicture;
class TGTextButton;


class TGLVEntry : public TGFrame {

friend class TGClient;

protected:
   TGString           *fName;        // name of item
   TGString          **fSubnames;    // sub names of item (details)
   Int_t              *fCpos;        // position of sub names
   Int_t              *fJmode;       // alignment for sub names
   Int_t              *fCtw;         // width of sub names
   UInt_t              fTWidth;      // width of name
   UInt_t              fTHeight;     // height of name
   Bool_t              fActive;      // true if item is active
   EListViewMode       fViewMode;    // list view viewing mode
   const TGPicture    *fBigPic;      // big icon
   const TGPicture    *fSmallPic;    // small icon
   const TGPicture    *fCurrent;     // current icon
   TGSelectedPicture  *fSelPic;      // selected icon
   GContext_t          fNormGC;      // drawing graphics context
   FontStruct_t        fFontStruct;  // text font
   void               *fUserData;    // pointer to user data structure

   static FontStruct_t   fgDefaultFontStruct;
   static GContext_t     fgDefaultGC;
   static ULong_t        fgSelPixel;

   virtual void DoRedraw();

public:
   TGLVEntry(const TGWindow *p,
             const TGPicture *bigpic, const TGPicture *smallpic,
             TGString *name, TGString **subnames, EListViewMode ViewMode,
             UInt_t options = kChildFrame,
             ULong_t back = fgWhitePixel);
   virtual ~TGLVEntry();

   virtual void SetViewMode(EListViewMode ViewMode);

   void   Activate(Bool_t a);
   Bool_t IsActive() const { return fActive; }
   const TGString  *GetItemName() const { return fName; }
   const TGPicture *GetPicture() const { return fCurrent; }
   void             SetUserData(void *userData) { fUserData = userData; }
   void            *GetUserData() const { return fUserData; }

   void SetColumns(Int_t *cpos, Int_t *jmode) { fCpos = cpos; fJmode = jmode; }

   virtual TGDimension GetDefaultSize() const;

  ClassDef(TGLVEntry,0)  // Item that goes into a TGListView container
};



class TGLVContainer : public TGCompositeFrame {

friend class TGClient;

protected:
   TGLVEntry         *fLastActive;    // last active list view item
   TGLayoutHints     *fItemLayout;    // item layout hints
   EListViewMode      fViewMode;      // list view viewing mode
   Int_t             *fCpos;          // position of sub names
   Int_t             *fJmode;         // alignment of sub names
   Int_t              fXp, fYp;       // previous pointer position
   Int_t              fX0, fY0;       // corner of rubber band box
   Int_t              fXf, fYf;       // other corner of rubber band box
   Int_t              fTotal;         // total items
   Int_t              fSelected;      // number of selected items
   Bool_t             fDragging;      // true if in dragging mode
   const TGWindow    *fMsgWindow;     // window handling container messages

   static GContext_t  fgLineGC;

public:
   TGLVContainer(const TGWindow *p, UInt_t w, UInt_t h,
                 UInt_t options = kSunkenFrame,
                 ULong_t back = fgDefaultFrameBackground);
   virtual ~TGLVContainer();

   virtual void AddItem(TGLVEntry *item)
              { AddFrame(item, fItemLayout); item->SetColumns(fCpos, fJmode); }
   virtual Bool_t HandleButton(Event_t *event);
   virtual Bool_t HandleDoubleClick(Event_t *event);
   virtual Bool_t HandleMotion(Event_t *event);

   virtual void Associate(const TGWindow *w) { fMsgWindow = w; }

   virtual void SelectAll();
   virtual void UnSelectAll();
   virtual void InvertSelection();
   virtual void RemoveAll();
   virtual void RemoveItem(TGLVEntry *item);
   virtual void RemoveItemWithData(void *userData);

   virtual void SetViewMode(EListViewMode ViewMode);
   virtual void SetColumns(Int_t *cpos, Int_t *jmode);

   virtual const TGLVEntry *GetNextSelected(void **current);
   virtual Int_t NumItems() const { return fTotal; }
   virtual Int_t NumSelected() const { return fSelected; }

   virtual TGDimension GetMaxItemSize() const;

   ClassDef(TGLVContainer,0)  // Listview container
};



class TGListView : public TGCanvas {

friend class TGClient;

protected:
   Int_t           fColumns[7];   // column width
   Int_t           fJmode[7];     // column text alignment
   EListViewMode   fViewMode;     // view mode if list view widget
   TGDimension     fMaxSize;      // maximum item size
   TGTextButton   *fColHeader[7]; // column headers for in detailed mode

   static GContext_t    fgDefaultGC;
   static FontStruct_t  fgDefaultFontStruct;

public:
   TGListView(const TGWindow *p, UInt_t w, UInt_t h,
              UInt_t options = kSunkenFrame | kDoubleBorder,
              ULong_t back = fgDefaultFrameBackground);
   virtual ~TGListView();

   virtual void   Layout();
   virtual Bool_t ProcessMessage(Long_t msg, Long_t parm1, Long_t parm2);
   virtual void   SetContainer(TGFrame *f);
   virtual void   SetHeader(const char *s, Int_t mode, Int_t idx);
   virtual void   SetViewMode(EListViewMode ViewMode);

   ClassDef(TGListView,0)  // List view widget (iconbox, small icons or tabular view)
};

#endif