//*CMZ :  2.00/00 24/02/98  16.46.26  by  Fons Rademakers
//*-- Author :    Fons Rademakers   24/02/98

//*KEEP,CopyRight,T=C.
/*************************************************************************
 * Copyright(c) 1995-1999, The ROOT System, All rights reserved.         *
 * Authors: Rene Brun, Fons Rademakers.                                  *
 * For list of contributors see $ROOTSYS/AA_CREDITS.                     *
 *                                                                       *
 * Permission to use, copy, modify and distribute this software and its  *
 * documentation for non-commercial purposes is hereby granted without   *
 * fee, provided that the above copyright notice appears in all copies   *
 * and that both the copyright notice and this permission notice appear  *
 * in the supporting documentation. The authors make no claims about the *
 * suitability of this software for any purpose. It is provided "as is"  *
 * without express or implied warranty.                                  *
 *************************************************************************/
//*KEND.

//////////////////////////////////////////////////////////////////////////
//                                                                      //
// TRootHelpDialog                                                      //
//                                                                      //
// A TRootHelpDialog is used to display help text (or any text in a     //
// dialog window). There is on OK button to popdown the dialog.         //
//                                                                      //
//////////////////////////////////////////////////////////////////////////

//*KEEP,TRootHelpDialog,T=C++.
#include "TRootHelpDialog.h"
//*KEEP,TGButton.
#include "TGButton.h"
//*KEEP,TGTextView.
#include "TGTextView.h"
//*KEND.


ClassImp(TRootHelpDialog)

//______________________________________________________________________________
 TRootHelpDialog::TRootHelpDialog(const TGWindow *main,
    const char *title, UInt_t w, UInt_t h) :
    TGTransientFrame(gClient->GetRoot(), main, w, h)
{
   // Create a help text dialog.

   fView = new TGTextView(this, w, h, kSunkenFrame | kDoubleBorder);
   //fView = new TGTextView(this, 10, 10, kSunkenFrame | kDoubleBorder);
   fL1 = new TGLayoutHints(kLHintsExpandX | kLHintsExpandY, 3, 3, 3, 3);
   AddFrame(fView, fL1);

   fOK = new TGTextButton(this, "  &OK  ");
   fL2 = new TGLayoutHints(kLHintsBottom | kLHintsCenterX, 0, 0, 5, 5);
   AddFrame(fOK, fL2);

   SetWindowName(title);
   SetIconName(title);

   MapSubwindows();

   Resize(GetDefaultSize());

   // position relative to the parent's window
   Window_t wdum;
   int ax, ay;
   gGXW->TranslateCoordinates(main->GetId(), GetParent()->GetId(),
                          ((TGFrame *) main)->GetWidth() - (fWidth >> 1),
                          (((TGFrame *) main)->GetHeight() - fHeight) >> 1,
                          ax, ay, wdum);
   Move(ax, ay);
   SetWMPosition(ax, ay);
}

//______________________________________________________________________________
 TRootHelpDialog::~TRootHelpDialog()
{
   // Delete help text dialog.

   delete fView;
   delete fOK;
   delete fL1;
   delete fL2;
}

//______________________________________________________________________________
 void TRootHelpDialog::Popup()
{
   // Show help dialog.

   MapWindow();
}

//______________________________________________________________________________
 void TRootHelpDialog::SetText(const char *helpText)
{
   // Set help text from helpText buffer in TGTextView.

   fView->LoadBuffer(helpText);
}

//______________________________________________________________________________
 void TRootHelpDialog::AddText(const char *helpText)
{
   // Add help text from helpText buffer to already existing text in TGTextView.

   Warning("AddText", "adding text to help dialog not yet supported");
   fView->LoadBuffer(helpText);
}

//______________________________________________________________________________
 void TRootHelpDialog::CloseWindow()
{
   // Called when closed via window manager action.

   delete this;
}

//______________________________________________________________________________
 Bool_t TRootHelpDialog::ProcessMessage(Long_t, Long_t, Long_t)
{
   // Process OK button.

   // Only one button and one action...
   delete this;

   return kTRUE;
}