// @(#)root/sessionviewer:$Id: TSessionDialogs.cxx 31813 2009-12-10 15:50:14Z bellenot $
// Author: Marek Biskup, Jakub Madejczyk, Bertrand Bellenot 10/08/2005

/*************************************************************************
 * Copyright (C) 1995-2005, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/

//////////////////////////////////////////////////////////////////////////
//                                                                      //
// TSessionDialogs                                                      //
//                                                                      //
// This file defines several dialogs that are used by TSessionViewer.   //
// The following dialogs are available: TNewChainDlg and TNewQueryDlg.  //
//                                                                      //
//////////////////////////////////////////////////////////////////////////

#include "TSessionDialogs.h"
#include "TSessionViewer.h"
#include "TROOT.h"
#include "TSystem.h"
#include "TGButton.h"
#include "TList.h"
#include "TChain.h"
#include "TDSet.h"
#include "TGTextEntry.h"
#include "TGTextBuffer.h"
#include "TGNumberEntry.h"
#include "TGLabel.h"
#include "TGListView.h"
#include "TGPicture.h"
#include "TGFSContainer.h"
#include "TGFileDialog.h"
#include "TGListTree.h"
#include "TInterpreter.h"
#include "TApplication.h"
#include "TKey.h"
#include "TGTableLayout.h"
#include "TGFileDialog.h"
#include "TProof.h"
#include "TFileInfo.h"
#include "TGMsgBox.h"
#include "TRegexp.h"

ClassImp(TNewChainDlg)
ClassImp(TNewQueryDlg)

/* not yet used
static const char *gParTypes[] = {
   "Par files",  "*.par",
   "All files",  "*",
    0,            0
};
*/

static const char *gDatasetTypes[] = {
   "ROOT files",    "*.root",
   "All files",     "*",
   0,               0
};

static const char *gFileTypes[] = {
   "C files",       "*.[C|c]*",
   "ROOT files",    "*.root",
   "All files",     "*",
   0,               0
};

//////////////////////////////////////////////////////////////////////////
// New Chain Dialog
//////////////////////////////////////////////////////////////////////////

//______________________________________________________________________________
TNewChainDlg::TNewChainDlg(const TGWindow *p, const TGWindow *main) :
   TGTransientFrame(p, main, 350, 300, kVerticalFrame)
{
   // Create a new chain dialog box. Used to list chains present in memory
   // and offers the possibility to create new ones by executing macros
   // directly from the associate file container.

   Pixel_t backgnd;
   if (!p || !main) return;
   SetCleanup(kDeepCleanup);
   fClient->GetColorByName("#F0FFF0", backgnd);
   AddFrame(new TGLabel(this, new TGHotString("List of Chains in Memory :")),
            new TGLayoutHints(kLHintsLeft, 5, 5, 7, 2) );

   // Add TGListView used to show objects in memory
   fListView = new TGListView(this, 300, 100);
   fLVContainer = new TGLVContainer(fListView, kSunkenFrame, GetWhitePixel());
   fLVContainer->Associate(fListView);
   fLVContainer->SetViewMode(kLVSmallIcons);
   fLVContainer->SetCleanup(kDeepCleanup);
   AddFrame(fListView, new TGLayoutHints(kLHintsExpandX | kLHintsExpandY, 4, 4, 4, 4));

   fListView->Connect("Clicked(TGLVEntry*, Int_t)", "TNewChainDlg",
            this, "OnElementClicked(TGLVEntry* ,Int_t)");

   // Add text entry showing type and name of user's selection
   TGCompositeFrame* frmSel = new TGHorizontalFrame(this, 300, 100);
   frmSel->SetCleanup(kDeepCleanup);
   frmSel->AddFrame(new TGLabel(frmSel, new TGHotString("Selected chain :")),
            new TGLayoutHints(kLHintsLeft | kLHintsCenterY, 5, 5, 5, 5) );
   fNameBuf = new TGTextBuffer(100);
   fName = new TGTextEntry(frmSel, fNameBuf);
   fName->Resize(200, fName->GetDefaultHeight());
   fName->Associate(this);
   fName->SetEnabled(kFALSE);
   fName->ChangeBackground(backgnd);
   frmSel->AddFrame(fName, new TGLayoutHints(kLHintsLeft | kLHintsCenterY | kLHintsExpandX, 5, 5, 5, 5));
   AddFrame(frmSel, new TGLayoutHints(kLHintsExpandX, 5, 5, 5, 5));

   AddFrame(new TGLabel(this, "Double-click on the macro to be executed to create a new Chain:"),
            new TGLayoutHints(kLHintsCenterX, 5, 5, 5, 2));

   // Add TGListview / TGFileContainer to allow user to execute Macros
   // for the creation of new TChains / TDSets
   TGListView* lv = new TGListView(this, 300, 100);
   AddFrame(lv,new TGLayoutHints(kLHintsExpandX | kLHintsExpandY, 5, 5, 2, 5));

   Pixel_t white;
   gClient->GetColorByName("white",white);
   fContents = new TGFileContainer(lv, kSunkenFrame, white);
   fContents->SetCleanup(kDeepCleanup);
   fContents->SetFilter("*.[C|c]*");
   fContents->SetViewMode(kLVSmallIcons);
   fContents->Associate(this);
   fContents->SetDefaultHeaders();
   fContents->DisplayDirectory();
   fContents->AddFile("..");        // up level directory
   fContents->Resize();
   fContents->StopRefreshTimer();   // stop refreshing

   // position relative to the parent's window
   Window_t wdummy;
   Int_t  ax, ay;
   gVirtualX->TranslateCoordinates( main->GetId(),
                                    fClient->GetDefaultRoot()->GetId(),
                                    0, 0, ax, ay, wdummy);
   Move(ax + 200, ay + 35);

   TGCompositeFrame *tmp;
   AddFrame(tmp = new TGCompositeFrame(this, 140, 20, kHorizontalFrame),
            new TGLayoutHints(kLHintsLeft | kLHintsExpandX));
   tmp->SetCleanup(kDeepCleanup);
   // Apply and Close buttons
   tmp->AddFrame(fOkButton = new TGTextButton(tmp, "&Ok", 0),
            new TGLayoutHints(kLHintsExpandX, 5, 5, 5, 5));
   tmp->AddFrame(fCancelButton = new TGTextButton(tmp, "&Cancel", 1),
            new TGLayoutHints(kLHintsExpandX, 5, 5, 5, 5));
   fOkButton->Associate(this);
   fCancelButton->Associate(this);
   fOkButton->SetEnabled(kFALSE);

   SetWindowName("Chain Selection Dialog");
   MapSubwindows();
   Layout();
   Resize(GetDefaultSize());
   MapWindow();
   UpdateList();
}

//______________________________________________________________________________
TNewChainDlg::~TNewChainDlg()
{
   // Delete chain dialog.
   if (IsZombie()) return;
   delete fLVContainer;
   delete fContents;
   Cleanup();
}

//______________________________________________________________________________
void TNewChainDlg::OnElementSelected(TObject *obj)
{
   // Emits OnElementSelected signal if dset is not zero.

   if (obj && (obj->IsA() == TChain::Class() ||
       obj->IsA() == TDSet::Class())) {
      Emit("OnElementSelected(TObject *)", (Long_t)obj);
   }
}

//______________________________________________________________________________
void TNewChainDlg::OnElementClicked(TGLVEntry *entry, Int_t)
{
   // Handle click in the Memory list view and put the type
   // and name of selected object in the text entry.

   fChain = (TObject *)entry->GetUserData();
   if (fChain->IsA() == TChain::Class()) {
      TString s = TString::Format("%s : %s" , ((TChain *)fChain)->GetTitle(),
                                  ((TChain *)fChain)->GetName());
      fName->SetText(s);
   }
   else if (fChain->IsA() == TDSet::Class()) {
      TString s = TString::Format("%s : %s" , ((TDSet *)fChain)->GetName(),
                                  ((TDSet *)fChain)->GetObjName());
      fName->SetText(s);
   }
   fOkButton->SetEnabled(kTRUE);
}

//______________________________________________________________________________
void TNewChainDlg::UpdateList()
{
   // Update Memory list view.

   TGLVEntry *item=0;
   TObject *obj = 0;
   fChains = gROOT->GetListOfDataSets();
   fLVContainer->RemoveAll();
   if (!fChains) return;
   TIter next(fChains);
   // loop on the list of chains/datasets in memory,
   // and fill the associated listview
   while ((obj = (TObject *)next())) {
      item = 0;
      if (obj->IsA() == TChain::Class()) {
         const char *title = ((TChain *)obj)->GetTitle();
         if (strlen(title) == 0)
            ((TChain *)obj)->SetTitle("TChain");
         item = new TGLVEntry(fLVContainer, ((TChain *)obj)->GetName(),
                              ((TChain *)obj)->GetTitle());
      }
      else if (obj->IsA() == TDSet::Class()) {
         item = new TGLVEntry(fLVContainer, ((TDSet *)obj)->GetObjName(),
                              ((TDSet *)obj)->GetName());
      }
      if (item) {
         item->SetUserData(obj);
         fLVContainer->AddItem(item);
      }
   }
   fClient->NeedRedraw(fLVContainer);
   Resize();
}

//______________________________________________________________________________
void TNewChainDlg::DisplayDirectory(const TString &fname)
{
   // Display content of directory.

   fContents->SetDefaultHeaders();
   gSystem->ChangeDirectory(fname);
   fContents->ChangeDirectory(fname);
   fContents->DisplayDirectory();
   fContents->AddFile("..");  // up level directory
   Resize();
}

//______________________________________________________________________________
void TNewChainDlg::OnDoubleClick(TGLVEntry* f, Int_t btn)
{
   // Handle double click in the File container.

   if (btn!=kButton1) return;
   gVirtualX->SetCursor(fContents->GetId(),gVirtualX->CreateCursor(kWatch));

   TString name(f->GetTitle());

   // Check if the file is a root macro file type
   if (name.Contains(".C")) {
      // form the command
      TString command = TString::Format(".x %s/%s",
                        gSystem->UnixPathName(fContents->GetDirectory()),
                        name.Data());
      // and process
      gApplication->ProcessLine(command.Data());
      UpdateList();
   } else {
      // if double clicked on a directory, then display it
      DisplayDirectory(name);
   }
   gVirtualX->SetCursor(fContents->GetId(),gVirtualX->CreateCursor(kPointer));
}

//______________________________________________________________________________
Bool_t TNewChainDlg::ProcessMessage(Long_t msg, Long_t parm1, Long_t)
{
   // Process messages for new chain dialog.

   switch (GET_MSG(msg)) {
      case kC_COMMAND:
         switch (GET_SUBMSG(msg)) {
            case kCM_BUTTON:
               switch (parm1) {

                  case 0:
                     // Apply button
                     fOkButton->SetEnabled(kFALSE);
                     OnElementSelected(fChain);
                     DeleteWindow();
                     break;

                  case 1:
                     // Close button
                     fChain = 0;
                     DeleteWindow();
                     break;
               }
               break;
            default:
               break;
         }
         break;

      case kC_CONTAINER:
         switch (GET_SUBMSG(msg)) {
            case kCT_ITEMDBLCLICK:
               if (parm1==kButton1)
                  OnDoubleClick((TGLVEntry*)fContents->GetLastActive(), parm1);
               break;
         }
         break;
      default:
         break;
   }
   return kTRUE;
}

//______________________________________________________________________________
void TNewChainDlg::CloseWindow()
{
   // Close file dialog.

   DeleteWindow();
}


//////////////////////////////////////////////////////////////////////////
// New Query Dialog
//////////////////////////////////////////////////////////////////////////

//______________________________________________________________________________
TNewQueryDlg::TNewQueryDlg(TSessionViewer *gui, Int_t Width, Int_t Height,
         TQueryDescription *query, Bool_t editmode) :
         TGTransientFrame(gClient->GetRoot(), gui, Width, Height)
{
   // Create a new Query dialog, used by the Session Viewer, to Edit a Query if
   // the editmode flag is set, or to create a new one if not set.

   Window_t wdummy;
   Int_t  ax, ay;
   fEditMode = editmode;
   fModified = kFALSE;
   fChain = 0;
   fQuery = query;
   if (fQuery && fQuery->fChain) {
      fChain = fQuery->fChain;
   }
   Build(gui);
   // if in edit mode, update fields with query description data
   if (editmode && query)
      UpdateFields(query);
   else if (!editmode) {
      TQueryDescription *fquery;
      fquery = (TQueryDescription *)fViewer->GetActDesc()->fQueries->Last();
      if(fquery)
         fTxtQueryName->SetText(fquery->fQueryName);
      else
         fTxtQueryName->SetText("Query 1");
   }
   MapSubwindows();
   Resize(Width, Height);
   // hide options frame
   fFrmNewQuery->HideFrame(fFrmMore);
   fBtnMore->SetText(" More >> ");
   SetWMSizeHints(Width+5, Height+25, Width+5, Height+25, 1, 1);
   ChangeOptions(GetOptions() | kFixedSize);
   Layout();
   SetWindowName("Query Dialog");
   // Position relative to parent
   gVirtualX->TranslateCoordinates( fViewer->GetId(),
                                    fClient->GetDefaultRoot()->GetId(),
                                    0, 0, ax, ay, wdummy);
   Move(ax + fViewer->GetWidth()/2, ay + 35);
}

//______________________________________________________________________________
TNewQueryDlg::~TNewQueryDlg()
{
   // Delete query dialog.

   if (IsZombie()) return;
   Cleanup();
}

//______________________________________________________________________________
void TNewQueryDlg::Build(TSessionViewer *gui)
{
   // Build the "new query" dialog.

   TGButton*   btnTmp;
   fViewer = gui;
   SetLayoutManager(new TGVerticalLayout(this));
   SetCleanup(kDeepCleanup);
   SetMinWidth(500);
   fFrmNewQuery = new TGGroupFrame(this, "New Query");
   fFrmNewQuery->SetCleanup(kDeepCleanup);

   AddFrame(fFrmNewQuery, new TGLayoutHints(kLHintsExpandX |
         kLHintsExpandY, 2, 2, 2, 2));
   fFrmNewQuery->SetLayoutManager(new TGTableLayout(fFrmNewQuery, 6, 5));

   // add "Query Name" label and text entry
   fFrmNewQuery->AddFrame(new TGLabel(fFrmNewQuery, "Query Name :"),
         new TGTableLayoutHints(0, 1, 0, 1, kLHintsCenterY, 0, 5, 4, 0));
   fFrmNewQuery->AddFrame(fTxtQueryName = new TGTextEntry(fFrmNewQuery,
         (const char *)0, 1), new TGTableLayoutHints(1, 2, 0, 1,
         kLHintsCenterY, 5, 5, 4, 0));

   // add "TChain" label and text entry
   fFrmNewQuery->AddFrame(new TGLabel(fFrmNewQuery, "TChain :"),
         new TGTableLayoutHints(0, 1, 1, 2, kLHintsCenterY, 0, 5, 4, 0));
   fFrmNewQuery->AddFrame(fTxtChain = new TGTextEntry(fFrmNewQuery,
         (const char *)0, 2), new TGTableLayoutHints(1, 2, 1, 2,
         kLHintsCenterY, 5, 5, 4, 0));
   fTxtChain->SetToolTipText("Specify TChain or TDSet from memory or file");
   fTxtChain->SetEnabled(kFALSE);
   // add "Browse" button
   fFrmNewQuery->AddFrame(btnTmp = new TGTextButton(fFrmNewQuery, "Browse..."),
         new TGTableLayoutHints(2, 3, 1, 2, kLHintsCenterY, 5, 0, 4, 8));
   btnTmp->Connect("Clicked()", "TNewQueryDlg", this, "OnBrowseChain()");

   // add "Selector" label and text entry
   fFrmNewQuery->AddFrame(new TGLabel(fFrmNewQuery, "Selector :"),
         new TGTableLayoutHints(0, 1, 2, 3, kLHintsCenterY, 0, 5, 0, 0));
   fFrmNewQuery->AddFrame(fTxtSelector = new TGTextEntry(fFrmNewQuery,
         (const char *)0, 3), new TGTableLayoutHints(1, 2, 2, 3,
         kLHintsCenterY, 5, 5, 0, 0));
   // add "Browse" button
   fFrmNewQuery->AddFrame(btnTmp = new TGTextButton(fFrmNewQuery, "Browse..."),
         new TGTableLayoutHints(2, 3, 2, 3, kLHintsCenterY, 5, 0, 0, 8));
   btnTmp->Connect("Clicked()", "TNewQueryDlg", this, "OnBrowseSelector()");

   // add "Less <<" ("More >>") button
   fFrmNewQuery->AddFrame(fBtnMore = new TGTextButton(fFrmNewQuery, " Less << "),
         new TGTableLayoutHints(2, 3, 4, 5, kLHintsCenterY, 5, 5, 4, 0));
   fBtnMore->Connect("Clicked()", "TNewQueryDlg", this, "OnNewQueryMore()");

   // add (initially hidden) options frame
   fFrmMore = new TGCompositeFrame(fFrmNewQuery, 200, 200);
   fFrmMore->SetCleanup(kDeepCleanup);

   fFrmNewQuery->AddFrame(fFrmMore, new TGTableLayoutHints(0, 3, 5, 6,
         kLHintsExpandX | kLHintsExpandY));
   fFrmMore->SetLayoutManager(new TGTableLayout(fFrmMore, 4, 3));

   // add "Options" label and text entry
   fFrmMore->AddFrame(new TGLabel(fFrmMore, "Options :"),
         new TGTableLayoutHints(0, 1, 0, 1, kLHintsCenterY, 0, 5, 0, 0));
   fFrmMore->AddFrame(fTxtOptions = new TGTextEntry(fFrmMore,
         (const char *)0, 4), new TGTableLayoutHints(1, 2, 0, 1, 0, 22,
         0, 0, 8));
   fTxtOptions->SetText("ASYN");

   // add "Nb Entries" label and number entry
   fFrmMore->AddFrame(new TGLabel(fFrmMore, "Nb Entries :"),
         new TGTableLayoutHints(0, 1, 1, 2, kLHintsCenterY, 0, 5, 0, 0));
   fFrmMore->AddFrame(fNumEntries = new TGNumberEntry(fFrmMore, 0, 5, -1,
         TGNumberFormat::kNESInteger, TGNumberFormat::kNEAAnyNumber,
         TGNumberFormat::kNELNoLimits), new TGTableLayoutHints(1, 2, 1, 2,
         0, 22, 0, 0, 8));
   fNumEntries->SetIntNumber(-1);
   // add "First Entry" label and number entry
   fFrmMore->AddFrame(new TGLabel(fFrmMore, "First entry :"),
         new TGTableLayoutHints(0, 1, 2, 3, kLHintsCenterY, 0, 5, 0, 0));
   fFrmMore->AddFrame(fNumFirstEntry = new TGNumberEntry(fFrmMore, 0, 5, -1,
         TGNumberFormat::kNESInteger, TGNumberFormat::kNEANonNegative,
         TGNumberFormat::kNELNoLimits), new TGTableLayoutHints(1, 2, 2, 3, 0,
         22, 0, 0, 8));

   // add "Event list" label and text entry
   fFrmMore->AddFrame(new TGLabel(fFrmMore, "Event list :"),
         new TGTableLayoutHints(0, 1, 3, 4, kLHintsCenterY, 0, 5, 0, 0));
   fFrmMore->AddFrame(fTxtEventList = new TGTextEntry(fFrmMore,
         (const char *)0, 6), new TGTableLayoutHints(1, 2, 3, 4, 0, 22,
         5, 0, 0));
   // add "Browse" button
   fFrmMore->AddFrame(btnTmp = new TGTextButton(fFrmMore, "Browse..."),
         new TGTableLayoutHints(2, 3, 3, 4, 0, 6, 0, 0, 8));
   btnTmp->Connect("Clicked()", "TNewQueryDlg", this, "OnBrowseEventList()");

   fTxtQueryName->Associate(this);
   fTxtChain->Associate(this);
   fTxtSelector->Associate(this);
   fTxtOptions->Associate(this);
   fNumEntries->Associate(this);
   fNumFirstEntry->Associate(this);
   fTxtEventList->Associate(this);

   fTxtQueryName->Connect("TextChanged(char*)", "TNewQueryDlg", this,
                        "SettingsChanged()");
   fTxtChain->Connect("TextChanged(char*)", "TNewQueryDlg", this,
                        "SettingsChanged()");
   fTxtSelector->Connect("TextChanged(char*)", "TNewQueryDlg", this,
                        "SettingsChanged()");
   fTxtOptions->Connect("TextChanged(char*)", "TNewQueryDlg", this,
                        "SettingsChanged()");
   fNumEntries->Connect("ValueChanged(Long_t)", "TNewQueryDlg", this,
                        "SettingsChanged()");
   fNumFirstEntry->Connect("ValueChanged(Long_t)", "TNewQueryDlg", this,
                        "SettingsChanged()");
   fTxtEventList->Connect("TextChanged(char*)", "TNewQueryDlg", this,
                        "SettingsChanged()");

   TGCompositeFrame *tmp;
   AddFrame(tmp = new TGCompositeFrame(this, 140, 20, kHorizontalFrame),
         new TGLayoutHints(kLHintsLeft | kLHintsExpandX));
   tmp->SetCleanup(kDeepCleanup);
   // Add "Save" and "Save & Submit" buttons if we are in edition mode
   // or "Add" and "Add & Submit" if we are not in edition mode.
   if (fEditMode) {
      fBtnSave = new TGTextButton(tmp, "Save");
      fBtnSubmit = new TGTextButton(tmp, "Save && Submit");
   }
   else {
      fBtnSave = new TGTextButton(tmp, "Add");
      fBtnSubmit = new TGTextButton(tmp, "Add && Submit");
   }
   tmp->AddFrame(fBtnSave, new TGLayoutHints(kLHintsLeft | kLHintsExpandX,
         3, 3, 3, 3));
   tmp->AddFrame(fBtnSubmit, new TGLayoutHints(kLHintsLeft | kLHintsExpandX,
         3, 3, 3, 3));
   fBtnSave->Connect("Clicked()", "TNewQueryDlg", this, "OnBtnSaveClicked()");
   fBtnSubmit->Connect("Clicked()", "TNewQueryDlg", this, "OnBtnSubmitClicked()");
   tmp->AddFrame(fBtnClose = new TGTextButton(tmp, "Close"),
         new TGLayoutHints(kLHintsLeft | kLHintsExpandX, 3, 3, 3, 3));
   fBtnClose->Connect("Clicked()", "TNewQueryDlg", this, "OnBtnCloseClicked()");
   fBtnSave->SetState(kButtonDisabled);
   fBtnSubmit->SetState(kButtonDisabled);
}

//______________________________________________________________________________
void TNewQueryDlg::CloseWindow()
{
   // Called when window is closed via the window manager.

   DeleteWindow();
}

//______________________________________________________________________________
void TNewQueryDlg::OnNewQueryMore()
{
   // Show/hide options frame and update button text accordingly.

   if (fFrmNewQuery->IsVisible(fFrmMore)) {
      fFrmNewQuery->HideFrame(fFrmMore);
      fBtnMore->SetText(" More >> ");
   }
   else {
      fFrmNewQuery->ShowFrame(fFrmMore);
      fBtnMore->SetText(" Less << ");
   }
}

//______________________________________________________________________________
void TNewQueryDlg::OnBrowseChain()
{
   // Call new chain dialog.

   TNewChainDlg *dlg = new TNewChainDlg(fClient->GetRoot(), this);
   dlg->Connect("OnElementSelected(TObject *)", "TNewQueryDlg",
         this, "OnElementSelected(TObject *)");
}

//____________________________________________________________________________
void TNewQueryDlg::OnElementSelected(TObject *obj)
{
   // Handle OnElementSelected signal coming from new chain dialog.

   if (obj) {
      fChain = obj;
      if (obj->IsA() == TChain::Class())
         fTxtChain->SetText(((TChain *)fChain)->GetName());
      else if (obj->IsA() == TDSet::Class())
         fTxtChain->SetText(((TDSet *)fChain)->GetObjName());
   }
}

//______________________________________________________________________________
void TNewQueryDlg::OnBrowseSelector()
{
   // Open file browser to choose selector macro.

   TGFileInfo fi;
   fi.fFileTypes = gFileTypes;
   new TGFileDialog(fClient->GetRoot(), this, kFDOpen, &fi);
   if (!fi.fFilename) return;
   fTxtSelector->SetText(gSystem->UnixPathName(fi.fFilename));
}

//______________________________________________________________________________
void TNewQueryDlg::OnBrowseEventList()
{
   //Browse event list

}

//______________________________________________________________________________
void TNewQueryDlg::OnBtnSaveClicked()
{
   // Save current settings in main session viewer.

   // if we are in edition mode and query description is valid,
   // use it, otherwise create a new one
   TQueryDescription *newquery;
   if (fEditMode && fQuery)
      newquery = fQuery;
   else
      newquery = new TQueryDescription();

   // update query description fields
   newquery->fSelectorString  = fTxtSelector->GetText();
   if (fChain) {
      newquery->fTDSetString  = fChain->GetName();
      newquery->fChain        = fChain;
   }
   else {
      newquery->fTDSetString = "";
      newquery->fChain       = 0;
   }
   newquery->fQueryName      = fTxtQueryName->GetText();
   newquery->fOptions.Form("%s",fTxtOptions->GetText());
   newquery->fNoEntries      = fNumEntries->GetIntNumber();
   newquery->fFirstEntry     = fNumFirstEntry->GetIntNumber();
   newquery->fNbFiles        = 0;
   newquery->fResult         = 0;

   if (newquery->fChain) {
      if (newquery->fChain->IsA() == TChain::Class())
         newquery->fNbFiles = ((TChain *)newquery->fChain)->GetListOfFiles()->GetEntriesFast();
      else if (newquery->fChain->IsA() == TDSet::Class())
         newquery->fNbFiles = ((TDSet *)newquery->fChain)->GetListOfElements()->GetSize();
   }
   if (!fEditMode) {
      // if not in editor mode, create a new list tree item
      // and set user data to the newly created query description
      newquery->fResult = 0;
      newquery->fStatus = TQueryDescription::kSessionQueryCreated;

      TQueryDescription *fquery;
      fquery = (TQueryDescription *)fViewer->GetActDesc()->fQueries->FindObject(newquery->fQueryName);
      while (fquery) {
         int e = 1, j = 0, idx = 0;
         const char *name = fquery->fQueryName;
         for (int i=strlen(name)-1;i>0;i--) {
            if (isdigit(name[i])) {
               idx += (name[i]-'0') * e;
               e *= 10;
               j++;
            }
            else
               break;
         }
         if (idx > 0) {
            idx++;
            newquery->fQueryName.Remove(strlen(name)-j,j);
            newquery->fQueryName.Append(Form("%d",idx));
         }
         else
            newquery->fQueryName.Append(" 1");
         fquery = (TQueryDescription *)fViewer->GetActDesc()->fQueries->FindObject(newquery->fQueryName);
      }
      fTxtQueryName->SetText(newquery->fQueryName);
      fViewer->GetActDesc()->fQueries->Add((TObject *)newquery);
      TGListTreeItem *item = fViewer->GetSessionHierarchy()->FindChildByData(
         fViewer->GetSessionItem(), fViewer->GetActDesc());
      TGListTreeItem *item2 = fViewer->GetSessionHierarchy()->AddItem(item,
         newquery->fQueryName, fViewer->GetQueryConPict(), fViewer->GetQueryConPict());
      item2->SetUserData(newquery);
      fViewer->GetSessionHierarchy()->OpenItem(item);
      fViewer->GetSessionHierarchy()->ClearHighlighted();
      fViewer->GetSessionHierarchy()->HighlightItem(item2);
      fViewer->GetSessionHierarchy()->SetSelected(item2);
      fViewer->OnListTreeClicked(item2, 1, 0, 0);
   }
   else {
      // else if in editor mode, just update user data with modified
      // query description
      TGListTreeItem *item = fViewer->GetSessionHierarchy()->GetSelected();
      fViewer->GetSessionHierarchy()->RenameItem(item, newquery->fQueryName);
      item->SetUserData(newquery);
   }
   // update list tree
   fClient->NeedRedraw(fViewer->GetSessionHierarchy());
   fTxtQueryName->SelectAll();
   fTxtQueryName->SetFocus();
   fViewer->WriteConfiguration();
   fModified = kFALSE;
}

//______________________________________________________________________________
void TNewQueryDlg::OnBtnSubmitClicked()
{
   // Save and submit query description.

   OnBtnSaveClicked();
   fViewer->GetQueryFrame()->OnBtnSubmit();
}

//______________________________________________________________________________
void TNewQueryDlg::OnBtnCloseClicked()
{
   // Close dialog.

   Int_t result = kMBNo;
   if (fModified) {
      new TGMsgBox(fClient->GetRoot(), this, "Modified Settings",
                   "Do you wish to SAVE changes ?", 0,
                   kMBYes | kMBNo | kMBCancel, &result);
      if (result == kMBYes) {
         OnBtnSaveClicked();
      }
   }
   if (result == kMBNo) {
      DeleteWindow();
   }
}

//______________________________________________________________________________
void TNewQueryDlg::Popup()
{
   // Display dialog and set focus to query name text entry.

   MapWindow();
   fTxtQueryName->SetFocus();
}

//______________________________________________________________________________
void TNewQueryDlg::SettingsChanged()
{
   // Settings have changed, update GUI accordingly.

   if (fEditMode && fQuery) {
      if ((strcmp(fQuery->fSelectorString.Data(), fTxtSelector->GetText())) ||
          (strcmp(fQuery->fQueryName.Data(), fTxtQueryName->GetText())) ||
          (strcmp(fQuery->fOptions.Data(), fTxtOptions->GetText())) ||
          (fQuery->fNoEntries  != fNumEntries->GetIntNumber()) ||
          (fQuery->fFirstEntry != fNumFirstEntry->GetIntNumber()) ||
          (fQuery->fChain != fChain)) {
         fModified = kTRUE;
      }
      else {
         fModified = kFALSE;
      }
   }
   else {
      if ((fTxtQueryName->GetText()) &&
         ((fTxtQueryName->GetText()) ||
          (fTxtChain->GetText())))
         fModified = kTRUE;
      else
         fModified = kFALSE;
   }
   if (fModified) {
      fBtnSave->SetState(kButtonUp);
      fBtnSubmit->SetState(kButtonUp);
   }
   else {
      fBtnSave->SetState(kButtonDisabled);
      fBtnSubmit->SetState(kButtonDisabled);
   }
}

//______________________________________________________________________________
void TNewQueryDlg::UpdateFields(TQueryDescription *desc)
{
   // Update entry fields with query description values.

   fQuery = desc;
   fTxtQueryName->SetText(desc->fQueryName);
   fTxtChain->SetText("");
   if (desc->fChain)
      fTxtChain->SetText(desc->fTDSetString);
   fTxtSelector->SetText(desc->fSelectorString);
   fTxtOptions->SetText(desc->fOptions);
   fNumEntries->SetIntNumber(desc->fNoEntries);
   fNumFirstEntry->SetIntNumber(desc->fFirstEntry);
   fTxtEventList->SetText(desc->fEventList);
}
//______________________________________________________________________________
Bool_t TNewQueryDlg::ProcessMessage(Long_t msg, Long_t parm1, Long_t)
{
   // Process messages for new query dialog.
   // Essentially used to navigate between text entry fields.

   switch (GET_MSG(msg)) {
      case kC_TEXTENTRY:
         switch (GET_SUBMSG(msg)) {
            case kTE_ENTER:
            case kTE_TAB:
               switch (parm1) {
                  case 1: // Query Name
                     fTxtChain->SelectAll();
                     fTxtChain->SetFocus();
                     break;
                  case 2: // Chain Name
                     fTxtSelector->SelectAll();
                     fTxtSelector->SetFocus();
                     break;
                  case 3: // Selector Name
                     fTxtOptions->SelectAll();
                     fTxtOptions->SetFocus();
                     break;
                  case 4: // Options
                     fTxtEventList->SelectAll();
                     fTxtEventList->SetFocus();
                     break;
                  case 6: // Event List
                     fTxtQueryName->SelectAll();
                     fTxtQueryName->SetFocus();
                     break;
               }
               break;

            default:
               break;
         }
         break;

      default:
         break;
   }
   return kTRUE;
}

//////////////////////////////////////////////////////////////////////////
// Upload DataSet Dialog
//////////////////////////////////////////////////////////////////////////

//______________________________________________________________________________
TUploadDataSetDlg::TUploadDataSetDlg(TSessionViewer *gui, Int_t w, Int_t h) :
         TGTransientFrame(gClient->GetRoot(), gui, w, h)
{
   // Create a Upload DataSet dialog box. Used to create and upload a dataset

   fUploading = kFALSE;
   if (!gui) return;
   fViewer = gui;

   SetCleanup(kDeepCleanup);
   TGHorizontalFrame *hFrame1 = new TGHorizontalFrame(this);
   hFrame1->SetCleanup(kDeepCleanup);
   hFrame1->AddFrame(new TGLabel(hFrame1,"Name of DataSet :"),
                     new TGLayoutHints(kLHintsLeft | kLHintsCenterY,
                     10, 10, 5, 5));
   fDSetName = new TGTextEntry(hFrame1, new TGTextBuffer(50));
   fDSetName->SetText("DataSet1");
   fDSetName->Resize(150, fDSetName->GetDefaultHeight());
   hFrame1->AddFrame(fDSetName, new TGLayoutHints(kLHintsLeft | kLHintsCenterY,
                     10, 10, 5, 5));
   AddFrame(hFrame1, new TGLayoutHints(kLHintsLeft | kLHintsTop | kLHintsExpandX,
            2, 2, 2, 2));

   // "DataSet Files" group frame
   TGGroupFrame *groupFrame1 = new TGGroupFrame(this, "DataSet Files");
   groupFrame1->SetCleanup(kDeepCleanup);

   // horizontal frame for files location URL
   TGHorizontalFrame *hFrame11 = new TGHorizontalFrame(groupFrame1);
   hFrame11->SetCleanup(kDeepCleanup);
   hFrame11->AddFrame(new TGLabel(hFrame11,"Location URL :"),
                     new TGLayoutHints(kLHintsLeft | kLHintsCenterY,
                     10, 10, 5, 5));
   fLocationURL = new TGTextEntry(hFrame11, new TGTextBuffer(150));
   fLocationURL->SetToolTipText("Enter location URL ( i.e \" root://lxplus//castor/cern.ch/user/n/name/*.root \" )");
   fLocationURL->Resize(210, fLocationURL->GetDefaultHeight());
   hFrame11->AddFrame(fLocationURL, new TGLayoutHints(kLHintsLeft |
                      kLHintsCenterY, 10, 10, 5, 5));
   fAddButton = new TGTextButton(hFrame11, " Add >> ", 0);
   fAddButton->SetToolTipText("Add file(s) to the list");
   fAddButton->Associate(this);
   hFrame11->AddFrame(fAddButton, new TGLayoutHints(kLHintsLeft | kLHintsCenterY |
                      kLHintsExpandX, 5, 10, 5, 5));
   groupFrame1->AddFrame(hFrame11, new TGLayoutHints(kLHintsLeft | kLHintsTop |
                         kLHintsExpandX, 2, 2, 2, 2));
   // horizontal frame for the list view displaying list of files
   // and for a vertical frame with control buttons
   TGHorizontalFrame *hFrame2 = new TGHorizontalFrame(groupFrame1);
   hFrame2->SetCleanup(kDeepCleanup);

   // list view
   // Add TGListView used to show list of files
   fListView = new TGListView(hFrame2, 300, 100);
   fLVContainer = new TGLVContainer(fListView, kSunkenFrame, GetWhitePixel());
   fLVContainer->Associate(fListView);
   fLVContainer->SetViewMode(kLVDetails);
   fLVContainer->SetCleanup(kDeepCleanup);
   fLVContainer->SetHeaders(1);
   fLVContainer->SetHeader("File Name", kTextLeft, kTextLeft , 0);
   hFrame2->AddFrame(fListView, new TGLayoutHints(kLHintsLeft | kLHintsTop |
                     kLHintsExpandX | kLHintsExpandY, 2, 2, 10, 10));

   // vertical frame for control buttons
   TGVerticalFrame *vFrame1 = new TGVerticalFrame(hFrame2);
   vFrame1->SetCleanup(kDeepCleanup);

   fBrowseButton = new TGTextButton(vFrame1, " Browse... ", 1);
   fBrowseButton->SetToolTipText("Add file(s) to the list");
   fBrowseButton->Associate(this);
   vFrame1->AddFrame(fBrowseButton, new TGLayoutHints(kLHintsLeft | kLHintsTop |
                     kLHintsExpandX, 15, 5, 5, 5));
   fRemoveButton = new TGTextButton(vFrame1, " Remove ", 2);
   fRemoveButton->SetToolTipText("Remove selected file from the list");
   fRemoveButton->Associate(this);
   vFrame1->AddFrame(fRemoveButton, new TGLayoutHints(kLHintsLeft | kLHintsTop |
                     kLHintsExpandX, 15, 5, 5, 5));
   fClearButton = new TGTextButton(vFrame1, " Clear ", 3);
   fClearButton->SetToolTipText("Clear list of files");
   fClearButton->Associate(this);
   vFrame1->AddFrame(fClearButton, new TGLayoutHints(kLHintsLeft | kLHintsTop |
                     kLHintsExpandX, 15, 5, 5, 5));

   fOverwriteDSet = new TGCheckButton(vFrame1, "Overwrite DataSet");
   fOverwriteDSet->SetToolTipText("Overwrite DataSet");
   vFrame1->AddFrame(fOverwriteDSet, new TGLayoutHints(kLHintsLeft | kLHintsTop |
                     kLHintsExpandX, 15, 5, 5, 5));
   fOverwriteFiles = new TGCheckButton(vFrame1, "Overwrite Files");
   fOverwriteFiles->SetToolTipText("Overwrite files in DataSet");
   vFrame1->AddFrame(fOverwriteFiles, new TGLayoutHints(kLHintsLeft | kLHintsTop |
                     kLHintsExpandX, 15, 5, 5, 5));
   fAppendFiles = new TGCheckButton(vFrame1, "Append Files");
   fAppendFiles->SetToolTipText("Append files in DataSet");
   vFrame1->AddFrame(fAppendFiles, new TGLayoutHints(kLHintsLeft | kLHintsTop |
                     kLHintsExpandX, 15, 5, 5, 5));

   fOverwriteDSet->Connect("Toggled(Bool_t)", "TUploadDataSetDlg", this,
         "OnOverwriteDataset(Bool_t)");
   fOverwriteFiles->Connect("Toggled(Bool_t)", "TUploadDataSetDlg", this,
         "OnOverwriteFiles(Bool_t)");
   fAppendFiles->Connect("Toggled(Bool_t)", "TUploadDataSetDlg", this,
         "OnAppendFiles(Bool_t)");

   hFrame2->AddFrame(vFrame1, new TGLayoutHints(kLHintsRight | kLHintsTop |
                     kLHintsExpandY, 2, 2, 2, 2));
   groupFrame1->AddFrame(hFrame2, new TGLayoutHints(kLHintsLeft | kLHintsTop |
                         kLHintsExpandX | kLHintsExpandY, 2, 2, 2, 2));

   AddFrame(groupFrame1, new TGLayoutHints(kLHintsLeft | kLHintsTop |
            kLHintsExpandX, 5, 5, 2, 2));

   // horizontal frame for destination URL
   TGHorizontalFrame *hFrame3 = new TGHorizontalFrame(this);
   hFrame3->SetCleanup(kDeepCleanup);
   hFrame3->AddFrame(new TGLabel(hFrame3,"Destination URL :"),
                     new TGLayoutHints(kLHintsLeft | kLHintsCenterY,
                     15, 10, 5, 5));
   fDestinationURL = new TGTextEntry(hFrame3, new TGTextBuffer(150));
   if (fViewer->GetActDesc()->fConnected &&
      fViewer->GetActDesc()->fAttached &&
      fViewer->GetActDesc()->fProof &&
      fViewer->GetActDesc()->fProof->IsValid()) {
      // const char *dest = fViewer->GetActDesc()->fProof->GetDataPoolUrl();
      // fDestinationURL->SetText(dest);
   }
   fDestinationURL->SetToolTipText("Enter destination URL ( relative to \" root://host//proofpool/user/ \" )");
   fDestinationURL->Resize(305, fDestinationURL->GetDefaultHeight());
   hFrame3->AddFrame(fDestinationURL, new TGLayoutHints(kLHintsLeft |
                     kLHintsCenterY, 10, 15, 5, 5));
   AddFrame(hFrame3, new TGLayoutHints(kLHintsLeft | kLHintsTop | kLHintsExpandX,
            2, 2, 2, 2));

   // horizontal frame for upload and close buttons
   TGHorizontalFrame *hFrame4 = new TGHorizontalFrame(this);
   hFrame4->SetCleanup(kDeepCleanup);
   fUploadButton = new TGTextButton(hFrame4, "Upload DataSet", 10);
   fUploadButton->SetToolTipText("Upload the dataset to the cluster");
   fUploadButton->Associate(this);
   hFrame4->AddFrame(fUploadButton, new TGLayoutHints(kLHintsLeft | kLHintsCenterY |
                     kLHintsExpandX, 15, 15, 2, 2));
   fCloseDlgButton = new TGTextButton(hFrame4, "Close Dialog", 11);
   fCloseDlgButton->SetToolTipText("Close the dialog");
   fCloseDlgButton->Associate(this);
   hFrame4->AddFrame(fCloseDlgButton, new TGLayoutHints(kLHintsLeft | kLHintsCenterY |
                     kLHintsExpandX, 15, 15, 2, 2));
   AddFrame(hFrame4, new TGLayoutHints(kLHintsLeft | kLHintsTop | kLHintsExpandX,
            2, 2, 2, 2));

   // position relative to the parent's window
   Window_t wdummy;
   Int_t  ax, ay;
   gVirtualX->TranslateCoordinates( gui->GetId(),
                                    fClient->GetDefaultRoot()->GetId(),
                                    0, 0, ax, ay, wdummy);
   Move(ax + 250, ay + 200);

   SetWindowName("Upload DataSet Dialog");
   MapSubwindows();
   MapWindow();

   Resize(w, h);
   SetWMSizeHints(w+5, h+5, w+5, h+5, 1, 1);
   ChangeOptions(GetOptions() | kFixedSize);
   Layout();
}

//______________________________________________________________________________
TUploadDataSetDlg::~TUploadDataSetDlg()
{
   // Delete chain dialog.
   if (IsZombie()) return;
   Cleanup();
}

//______________________________________________________________________________
void TUploadDataSetDlg::CloseWindow()
{
   // Close upload dataset dialog.

   if (!fUploading)
      DeleteWindow();
}

//______________________________________________________________________________
Bool_t TUploadDataSetDlg::ProcessMessage(Long_t msg, Long_t parm1, Long_t)
{
   // Process messages for upload dataset dialog.

   switch (GET_MSG(msg)) {
      case kC_COMMAND:
         switch (GET_SUBMSG(msg)) {
            case kCM_BUTTON:
               switch (parm1) {
                  case 0:
                     // Add button
                     if (fLocationURL->GetText())
                        AddFiles(fLocationURL->GetText());
                     break;
                  case 1:
                     // Add button
                     BrowseFiles();
                     break;
                  case 2:
                     // Remove button
                     RemoveFile();
                     break;
                  case 3:
                     // Clear button
                     ClearFiles();
                     break;
                  case 10:
                     // Upload button
                     UploadDataSet();
                     break;
                  case 11:
                     // Close button
                     CloseWindow();
                     break;
               }
               break;
            default:
               break;
         }
         break;

      default:
         break;
   }
   return kTRUE;
}

//______________________________________________________________________________
void TUploadDataSetDlg::AddFiles(const char *fileName)
{
   // Add File name(s) from the file location URL to the list view.

   if (strlen(fileName) < 5)
      return;
   if (strstr(fileName,"*.")) {
      // wildcarding case
      void *filesDir = gSystem->OpenDirectory(gSystem->DirName(fileName));
      const char* ent;
      TString filesExp(gSystem->BaseName(fileName));
      filesExp.ReplaceAll("*",".*");
      TRegexp rg(filesExp);
      while ((ent = gSystem->GetDirEntry(filesDir))) {
         TString entryString(ent);
         if (entryString.Index(rg) != kNPOS &&
             gSystem->AccessPathName(Form("%s/%s", gSystem->DirName(fileName),
                ent), kReadPermission) == kFALSE) {
            TString text = TString::Format("%s/%s",
               gSystem->UnixPathName(gSystem->DirName(fileName)), ent);
            if (!fLVContainer->FindItem(text.Data())) {
               TGLVEntry *entry = new TGLVEntry(fLVContainer, text.Data(), text.Data());
               entry->SetPictures(gClient->GetPicture("rootdb_t.xpm"),
                                  gClient->GetPicture("rootdb_t.xpm"));
               fLVContainer->AddItem(entry);
            }
         }
      }
   }
   else {
      // single file
      if (!fLVContainer->FindItem(fileName)) {
         TGLVEntry *entry = new TGLVEntry(fLVContainer, fileName, fileName);
         entry->SetPictures(gClient->GetPicture("rootdb_t.xpm"),
                            gClient->GetPicture("rootdb_t.xpm"));
         fLVContainer->AddItem(entry);
      }
   }
   // update list view
   fListView->AdjustHeaders();
   fListView->Layout();
   fClient->NeedRedraw(fLVContainer);
}

//______________________________________________________________________________
void TUploadDataSetDlg::AddFiles(TList *fileList)
{
   // Add File name(s) from the file location URL to the list view.

   TObjString *el;
   TIter next(fileList);
   while ((el = (TObjString *) next())) {
      TString fileName = TString::Format("%s/%s",
                  gSystem->UnixPathName(gSystem->DirName(el->GetString())),
                  gSystem->BaseName(el->GetString()));
      // single file
      if (!fLVContainer->FindItem(fileName.Data())) {
         TGLVEntry *entry = new TGLVEntry(fLVContainer, fileName.Data(), fileName.Data());
         entry->SetPictures(gClient->GetPicture("rootdb_t.xpm"),
                            gClient->GetPicture("rootdb_t.xpm"));
         fLVContainer->AddItem(entry);
      }
   }
   // update list view
   fListView->AdjustHeaders();
   fListView->Layout();
   fClient->NeedRedraw(fLVContainer);
}

//______________________________________________________________________________
void TUploadDataSetDlg::BrowseFiles()
{
   // Opens the TGFileDialog to allow user to select local file(s) to be added
   // in the list view of dataset files.

   TGFileInfo fi;
   fi.fFileTypes = gDatasetTypes;
   fi.fFilename  = strdup("*.root");
   new TGFileDialog(fClient->GetRoot(), this, kFDOpen, &fi);
   if (fi.fMultipleSelection && fi.fFileNamesList) {
      AddFiles(fi.fFileNamesList);
   }
   else if (fi.fFilename) {
      AddFiles(fi.fFilename);
   }
}

//______________________________________________________________________________
void TUploadDataSetDlg::ClearFiles()
{
   // Clear content of the list view.

   fLVContainer->RemoveAll();
   fListView->Layout();
   // update list view
   fClient->NeedRedraw(fLVContainer);
}

//______________________________________________________________________________
void TUploadDataSetDlg::OnOverwriteDataset(Bool_t on)
{
   // Notification of Overwrite Dataset check button.

   if (on && fAppendFiles->IsOn())
      fAppendFiles->SetState(kButtonUp);
}

//______________________________________________________________________________
void TUploadDataSetDlg::OnOverwriteFiles(Bool_t)
{
   // Notification of Overwrite Files check button.

}

//______________________________________________________________________________
void TUploadDataSetDlg::OnAppendFiles(Bool_t on)
{
   // Notification of Append Files check button.

   if (on && fOverwriteDSet->IsOn())
      fOverwriteDSet->SetState(kButtonUp);
}

//______________________________________________________________________________
void TUploadDataSetDlg::RemoveFile()
{
   // Remove the selected entry from the list view.

   TGFrame *item = (TGFrame *)fLVContainer->GetLastActive();
   fLVContainer->RemoveItem(item);
   // update list view
   fListView->AdjustHeaders();
   fListView->Layout();
   fClient->NeedRedraw(fLVContainer);
}

//______________________________________________________________________________
void TUploadDataSetDlg::UploadDataSet()
{
   // Upload the dataset to the server.

   Int_t retval;
   TString fileList;
   const char *dsetName = fDSetName->GetText();
   const char *destination = fDestinationURL->GetText();
   UInt_t flags = 0;
   TList *skippedFiles = new TList();
   TList *datasetFiles = new TList();

   if (fUploading)
      return;
   if (!fViewer->GetActDesc()->fConnected ||
       !fViewer->GetActDesc()->fAttached ||
       !fViewer->GetActDesc()->fProof ||
       !fViewer->GetActDesc()->fProof->IsValid()) {
      return;
   }
   // Format upload flags with user selection
   if (fOverwriteDSet->IsOn())
      flags |= TProof::kOverwriteDataSet;
   else
      flags |= TProof::kNoOverwriteDataSet;
   if (fOverwriteFiles->IsOn())
      flags |= TProof::kOverwriteAllFiles;
   else
      flags |= TProof::kOverwriteNoFiles;
   if (fAppendFiles->IsOn()) {
      flags |= TProof::kAppend;
      if (flags & TProof::kNoOverwriteDataSet)
         flags &= ~TProof::kNoOverwriteDataSet;
   }

   Int_t ret = 0;
   TIter next(fLVContainer->GetList());
   TGFrameElement *el;
   TGLVEntry *entry;

   while ((el = (TGFrameElement *)next())) {
      entry = (TGLVEntry *) el->fFrame;
      const char *fname = gSystem->UnixPathName(entry->GetTitle());
      datasetFiles->Add(new TFileInfo(fname));
   }
   fUploading = kTRUE;
   fUploadButton->SetState(kButtonDisabled);
   fCloseDlgButton->SetState(kButtonDisabled);

   if (strlen(destination) < 2) destination = 0;
   ret = fViewer->GetActDesc()->fProof->UploadDataSet(dsetName,
                  datasetFiles, destination, flags, skippedFiles);
   if (ret == TProof::kDataSetExists) {
      // ask user what to do :
      // cancel/overwrite and change option
      new TGMsgBox(fClient->GetRoot(), this, "Upload DataSet",
                   TString::Format("The dataset \"%s\" already exists on the cluster ! Overwrite ?",
                   dsetName), kMBIconQuestion, kMBYes | kMBNo | kMBCancel | kMBAppend,
                   &retval);
      if (retval == kMBYes) {
         ret = fViewer->GetActDesc()->fProof->UploadDataSet(dsetName,
                          datasetFiles, destination,
                          TProof::kOverwriteDataSet |
                          TProof::kOverwriteNoFiles,
                          skippedFiles);
      }
      if (retval == kMBAppend) {
         ret = fViewer->GetActDesc()->fProof->UploadDataSet(dsetName,
                          datasetFiles, destination,
                          TProof::kAppend |
                          TProof::kOverwriteNoFiles,
                          skippedFiles);
      }
   }
   if (ret == TProof::kError) {
      // Inform user
      new TGMsgBox(fClient->GetRoot(), this, "Upload DataSet",
                   "Failed uploading dataset/files to the cluster",
                   kMBIconExclamation, kMBOk, &retval);
      fUploading = kFALSE;
      fUploadButton->SetState(kButtonUp);
      fCloseDlgButton->SetState(kButtonUp);
      return;
   }
   // Here we cope with files that existed on the cluster and were skipped.
   if (skippedFiles->GetSize()) {
      TIter nexts(skippedFiles);
      while (TFileInfo *obj = (TFileInfo*)nexts()) {
         // Notify user that file: obj->GetFirstUrl()->GetUrl() exists on
         // the cluster and ask user what to do
         new TGMsgBox(fClient->GetRoot(), this, "Upload DataSet",
                      TString::Format("The file \"%s\" already exists on the cluster ! Overwrite ?",
                      obj->GetFirstUrl()->GetUrl()), kMBIconQuestion,
                      kMBYes | kMBNo | kMBYesAll | kMBNoAll | kMBDismiss, &retval);
         if (retval == kMBYesAll) {
            ret = fViewer->GetActDesc()->fProof->UploadDataSet(dsetName,
                           skippedFiles, destination,
                           TProof::kAppend |
                           TProof::kOverwriteAllFiles);
            if (ret == TProof::kError) {
               // Inform user
               new TGMsgBox(fClient->GetRoot(), this, "Upload DataSet",
                            TString::Format("Failed uploading \"%s\" to the cluster",
                            obj->GetFirstUrl()->GetUrl()), kMBIconExclamation,
                            kMBOk, &retval);
            }
            else {
               new TGMsgBox(fClient->GetRoot(), this, "Upload DataSet",
                            "Files have been succesfully uploaded to the cluster",
                            kMBIconAsterisk, kMBOk, &retval);
            }
            fUploading = kFALSE;
            fUploadButton->SetState(kButtonUp);
            fCloseDlgButton->SetState(kButtonUp);
            return;
         }
         if ((retval == kMBNoAll) || (retval == kMBDismiss)) {
            break;
         }
         if (retval == kMBYes) {
            // Append one file to the dataSet
            ret = fViewer->GetActDesc()->fProof->UploadDataSet(dsetName,
                  obj->GetFirstUrl()->GetUrl(), destination,
                  TProof::kAppend | TProof::kOverwriteAllFiles);
            if (ret == TProof::kError) {
               // Inform user
               new TGMsgBox(fClient->GetRoot(), this, "Upload DataSet",
                            TString::Format("Failed uploading \"%s\" to the cluster",
                            obj->GetFirstUrl()->GetUrl()), kMBIconExclamation,
                            kMBOk, &retval);
            }
            else {
               new TGMsgBox(fClient->GetRoot(), this, "Upload DataSet",
                            "Files have been succesfully uploaded to the cluster",
                            kMBIconAsterisk, kMBOk, &retval);
            }
         }
      }
      skippedFiles->Clear();
   }
   else {
      new TGMsgBox(fClient->GetRoot(), this, "Upload DataSet",
                   "Files have been succesfully uploaded to the cluster",
                   kMBIconAsterisk, kMBOk, &retval);
   }
   // finally, update list of datasets in session viewer
   fViewer->GetSessionFrame()->UpdateListOfDataSets();
   fUploading = kFALSE;
   fUploadButton->SetState(kButtonUp);
   fCloseDlgButton->SetState(kButtonUp);
}