//
// ********************************************************************
// * License and Disclaimer                                           *
// *                                                                  *
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// * the Geant4 Collaboration.  It is provided  under  the terms  and *
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//
//
// $Id: G4UIWt.hh,v 1.12 2008/03/10 17:03:16 lgarnier Exp $
// GEANT4 tag $Name: HEAD $
//
#ifndef G4UIWt_h
#define G4UIWt_h 

//#define G4UI_BUILD_WT_SESSION

#if defined(G4UI_BUILD_WT_SESSION) || defined(G4UI_USE_WT)

#include <map>

#include "G4VBasicShell.hh"
#include "G4VInteractiveSession.hh"

// Undef the wt SLOT if already define 
#ifdef SLOT
# undef SLOT
# undef signals
# undef slots
#endif

#include <qobject.h>

namespace Wt {
  class WString;
  class WComboBox;
  class WTree;
  class WTreeNode;
  class WTreeTable;
  class WTextEdit;
  class WLabel;
  class WDialog;
  class WEnvironment;  
  namespace Ext {
    class Panel;
    class ToolBar;
    class LineEdit;
  }
}

class G4UIsession;
class QEvent;
// #if WT_VERSION < 0x040000
// class WListView;
// class WListViewItem;
// #else
// #endif

// Class description :
//
//  G4UIWt : class to handle a Motif interactive session.
// G4UIWt is the Motif version of G4UIterminal.
//
//  A command box is at disposal for entering/recalling Geant4 commands.
//  A menubar could be customized through the AddMenu, AddButton methods.
//  Note that there are corresponding Geant4 commands to add a 
// menus in the menubar and add buttons in a menu.
//  Ex : 
//    /gui/addMenu   test Test
//    /gui/addButton test Init /run/initialize
//    /gui/addButton test "Set gun" "/control/execute gun.g4m"
//    /gui/addButton test "Run one event" "/run/beamOn 1"
//
//  Command completion, by typing "tab" key, is available on the 
// command line.
//
// Class description - end :

class G4UIWt : public QObject, public G4VBasicShell, public G4VInteractiveSession {
  Q_OBJECT

public: // With description
  G4UIWt( const Wt::WEnvironment& env);
  // (argv, argc) or (0, NULL) had to be given.
  G4UIsession* SessionStart();
  // To enter interactive X loop ; waiting/executing command,...
  void AddMenu(const char*,const char*);
  // To add a pulldown menu in the menu bar. 
  // First argument is the name of the menu.
  // Second argument is the label of the cascade button.
  // Ex : AddMenu("my_menu","My menu")
  void AddButton(const char*,const char*,const char*);
  // To add a push button in a pulldown menu.
  // First argument is the name of the menu.
  // Second argument is the label of the button.
  // Third argument is the Geant4 command executed when the button is fired.
  // Ex : AddButton("my_menu","Run","/run/beamOn 1"); 
public:
  ~G4UIWt();
  void Prompt(G4String);
  void SessionTerminate();
  void PauseSessionStart(G4String);
  G4int ReceiveG4cout(G4String);
  G4int ReceiveG4cerr(G4String);
  //   G4String GetCommand(Widget);

private:
  void SecondaryLoop(G4String); // a VIRER
  void TerminalHelp(G4String);
// #if WT_VERSION < 0x040000
//   WListView * CreateHelpTree();
// #else
  Wt::WTreeTable* CreateHelpTree();
// #endif

// #if WT_VERSION < 0x040000
//   void CreateChildTree(WListViewItem*,G4UIcommandTree*);
//   WListViewItem* FindTreeItem(WListViewItem *,const WString&);
// #else
  void CreateChildTree(Wt::WTreeNode*,G4UIcommandTree*);
  Wt::WTreeNode* FindTreeItem(Wt::WTreeNode *,const Wt::WString &);
// #endif

  Wt::WString GetCommandList(const G4UIcommand*);

  G4bool GetHelpChoice(G4int&) ;// have to be implemeted because we heritate from G4VBasicShell
  void ExitHelp();// have to be implemeted because we heritate from G4VBasicShell
  bool eventFilter(QObject*,QEvent*);
  void ActivateCommand(G4String);
  std::map<int,Wt::WString> LookForHelpStringInChildTree(G4UIcommandTree *,const Wt::WString&);


private:

  //  Widget form,shell,command,menuBar,text;
  //  std::map<WAction*,G4String, std::less<WAction*> > commands;
  //  static void commandEnteredCallback(Widget,XtPointer,XtPointer);
  //  static void keyHandler(Widget,XtPointer,XEvent*,Boolean*);
  Wt::Ext::Panel* fMainWindow;
  Wt::WLabel *fCommandLabel;
  Wt::Ext::LineEdit * fCommandArea;
  Wt::WTextEdit *fTextArea;
  Wt::WTextEdit *fHelpArea;
// #if WT_VERSION < 0x040000
//   WListView *fCommandHistoryArea;
//   WListView *fHelpTreeWidget;
// #else
  Wt::WComboBox *fCommandHistoryArea;
  Wt::WTreeTable *fHelpTreeWidget;
// #endif
  Wt::Ext::Panel *fHelpDialog;
  Wt::Ext::LineEdit *fHelpLine;
  Wt::Ext::ToolBar *fToolBar;
 
signals : 
  void myClicked(const Wt::WString &text);

private slots :
  void ExitSession();
  void ClearButtonCallback();
  void CommandEnteredCallback();
  void ButtonCallback(const Wt::WString&);
  void HelpTreeClicCallback();
  void HelpTreeDoubleClicCallback();
  void ShowHelpCallback();
  void CommandHistoryCallback();
  void lookForHelpStringCallback();
};

#endif

#endif