source: trunk/source/interfaces/basic/src/G4UIQt.cc@ 840

//
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//
// $Id: G4UIQt.cc,v 1.17 2008/05/05 13:24:00 lgarnier Exp $
// GEANT4 tag $Name:  $
//
// L. Garnier

#define GEANT4_QT_DEBUG

#ifdef G4UI_BUILD_QT_SESSION

#include "G4Types.hh"

#include <string.h>

#include "G4UIQt.hh"
#include "G4UImanager.hh"
#include "G4StateManager.hh"
#include "G4UIcommandTree.hh"
#include "G4UIcommandStatus.hh"

#include "G4Qt.hh"

#include <qapplication.h>
#include <qlineedit.h>
#include <qwidget.h>
#include <qmenubar.h>
#include <qlayout.h>
#include <qpushbutton.h>
#include <qlabel.h>
#include <qsplitter.h>
#include <qscrollbar.h>
#include <qdialog.h>
#include <qevent.h>
#include <qtextedit.h>
#include <qsignalmapper.h>

#include <qmainwindow.h>
#if QT_VERSION >= 0x040000
#include <qmenu.h>
#include <qlistwidget.h>
#include <qtreewidget.h>
#else
#include <qaction.h>
#include <qheader.h>
#include <qlistview.h>
#include <qpopupmenu.h>
#endif



#include <stdlib.h>

// Pourquoi Static et non  variables de classe ?
static G4bool exitSession = true;
static G4bool exitPause = true;

/**   Build a Qt window with a menubar, output area and promt area<br> 
<pre>
   +-----------------------+
   |exit menu|             |
   |                       |
   | +-------------------+ |
   | |                   | |
   | |  Output area      | |
   | |                   | |
   | +-------------------+ |
   |      | clear |        |
   | +-------------------+ |
   | |  promt history    | |
   | +-------------------+ |
   | +-------------------+ |
   | |> promt area       | |
   | +-------------------+ |
   +-----------------------+
</pre>
*/
G4UIQt::G4UIQt (
 int argc
,char** argv
)
  :fHelpDialog(NULL)
{
#ifdef GEANT4_QT_DEBUG
  printf("G4UIQt::Initialise %d %s\n",argc,argv[0]);
#endif
  G4Qt* interactorManager = G4Qt::getInstance (argc,argv,(char*)"Qt");
  G4UImanager* UI = G4UImanager::GetUIpointer();
  if(UI!=NULL) UI->SetSession(this);

  fMainWindow = new QMainWindow();

#ifdef GEANT4_QT_DEBUG
  printf("G4UIQt::Initialise after main window creation\n");
#endif
#if QT_VERSION < 0x040000
  fMainWindow->setCaption( tr( "G4UI Session" ));
  fMainWindow->resize(900,600); 
  fMainWindow->move(50,100);
#else
  fMainWindow->setWindowTitle( tr("G4UI Session") ); 
  fMainWindow->resize(900,600); 
  fMainWindow->move(QPoint(50,100));
#endif

  QSplitter *splitter = new QSplitter(Qt::Vertical,fMainWindow);

  // Set layouts

  QWidget* topWidget = new QWidget(splitter);
  QWidget* bottomWidget = new QWidget(splitter);

  QVBoxLayout *layoutTop = new QVBoxLayout(topWidget);
  QVBoxLayout *layoutBottom = new QVBoxLayout(bottomWidget);

  // fill them

  fTextArea = new QTextEdit(topWidget);
  QPushButton *clearButton = new QPushButton("clear",topWidget);
  connect(clearButton, SIGNAL(clicked()), SLOT(ClearButtonCallback()));

#if QT_VERSION < 0x040000

  fCommandHistoryArea = new QListView(bottomWidget);
  fCommandHistoryArea->setSorting (-1, FALSE);
  fCommandHistoryArea->setSelectionMode(QListView::Single);
  fCommandHistoryArea->addColumn("");
  fCommandHistoryArea->header()->hide();
  connect(fCommandHistoryArea, SIGNAL(selectionChanged()), SLOT(CommandHistoryCallback()));
#else
  fCommandHistoryArea = new QListWidget();
  fCommandHistoryArea->setSelectionMode(QAbstractItemView::SingleSelection);
  connect(fCommandHistoryArea, SIGNAL(itemSelectionChanged()), SLOT(CommandHistoryCallback()));
#endif
  fCommandHistoryArea->installEventFilter(this);
  fCommandLabel = new QLabel("",bottomWidget);

  fCommandArea = new QLineEdit(bottomWidget);
  fCommandArea->installEventFilter(this);
#if QT_VERSION < 0x040000
  fCommandArea->setActiveWindow();
#else
  fCommandArea->activateWindow();
#endif
  connect(fCommandArea, SIGNAL(returnPressed()), SLOT(CommandEnteredCallback()));
#if QT_VERSION < 0x040000
  fCommandArea->setFocusPolicy ( QWidget::StrongFocus );
  fCommandArea->setFocus();
#else
  fCommandArea->setFocusPolicy ( Qt::StrongFocus );
  fCommandArea->setFocus(Qt::TabFocusReason);
#endif
  fTextArea->setReadOnly(true);


#ifdef GEANT4_QT_DEBUG
  printf("G4UIQt::   2\n");
#endif



  layoutTop->addWidget(fTextArea);
  layoutTop->addWidget(clearButton);

#if QT_VERSION >= 0x040000
  topWidget->setLayout(layoutTop);
#endif

  layoutBottom->addWidget(fCommandHistoryArea);
  layoutBottom->addWidget(fCommandLabel);
  layoutBottom->addWidget(fCommandArea);
#if QT_VERSION >= 0x040000

  bottomWidget->setLayout(layoutBottom);
  splitter->addWidget(topWidget);
  splitter->addWidget(bottomWidget);
#endif


  fMainWindow->setCentralWidget(splitter);

#if QT_VERSION < 0x040000

  // Add a quit subMenu
  QPopupMenu *fileMenu = new QPopupMenu( fMainWindow);
  fileMenu->insertItem( "&Quitter",  this, SLOT(ExitSession()), CTRL+Key_Q );
  fMainWindow->menuBar()->insertItem( QString("&File"), fileMenu );

  // Add a Help menu
  QPopupMenu *helpMenu = new QPopupMenu( fMainWindow );
  helpMenu->insertItem( "&Show Help",  this, SLOT(ShowHelpCallback()), CTRL+Key_H );
  fMainWindow->menuBar()->insertItem( QString("&Help"), helpMenu );


#else

  // Add a quit subMenu
  QMenu *fileMenu = fMainWindow->menuBar()->addMenu("File");
  fileMenu->addAction("Quitter", this, SLOT(ExitSession()));

  // Add a Help menu
  QMenu *helpMenu = fMainWindow->menuBar()->addMenu("Help");
  helpMenu->addAction("Show Help", this, SLOT(ShowHelpCallback()));
#endif

  // Set the splitter size. The fTextArea sould be 2/3 on the fMainWindow
#if QT_VERSION < 0x040000
  QValueList<int> vals = splitter->sizes();
#else
  QList<int> vals = splitter->sizes();
#endif
  if(vals.size()==2) {
    vals[0] = (splitter->orientation()==Qt::Vertical ? splitter->height() : splitter->width())*3/4;
    vals[1] = (splitter->orientation()==Qt::Vertical ? splitter->height() : splitter->width())*1/4;
    splitter->setSizes(vals);
  }

  if(UI!=NULL) UI->SetCoutDestination(this);  // TO KEEP
}



G4UIQt::~G4UIQt(
) 
{ 
  G4UImanager* UI = G4UImanager::GetUIpointer();  // TO KEEP
  if(UI!=NULL) {  // TO KEEP
    UI->SetSession(NULL);  // TO KEEP
    UI->SetCoutDestination(NULL);  // TO KEEP
  }
  
  if (fMainWindow!=NULL)
    delete fMainWindow;
}



/**   Start the Qt main loop
*/
G4UIsession* G4UIQt::SessionStart (
)
{

  G4Qt* interactorManager = G4Qt::getInstance ();

#if QT_VERSION >= 0x040000
#if QT_VERSION >= 0x040200
  fMainWindow->setVisible(true);
#else
  fMainWindow->show();
#endif
#else
  fMainWindow->show();
#endif
  Prompt("session");
  exitSession = false;


#ifdef GEANT4_QT_DEBUG
  printf("disable secondary loop\n");
#endif
  interactorManager->DisableSecondaryLoop (); // TO KEEP

  // launch app
  if ((QApplication*)interactorManager->GetMainInteractor())
    ((QApplication*)interactorManager->GetMainInteractor())->exec();
  
  
  void* event;
  while((event = interactorManager->GetEvent())!=NULL) {
    interactorManager->DispatchEvent(event);
    if(exitSession==true) break;
  }
  
  interactorManager->EnableSecondaryLoop ();
#ifdef GEANT4_QT_DEBUG
  printf("enable secondary loop\n");
#endif
  return this;
}


/**   Display the prompt in the prompt area
   @param aPrompt : string to display as the promt label
*/
void G4UIQt::Prompt (
 G4String aPrompt
)
{
  if (!aPrompt) return;

  fCommandLabel->setText((char*)aPrompt.data());
}


void G4UIQt::SessionTerminate (
)
{
  G4Qt* interactorManager = G4Qt::getInstance ();
  fMainWindow->close();
  ((QApplication*)interactorManager->GetMainInteractor())->exit(); 
}



/**
   Called by intercoms/src/G4UImanager.cc<br>
   Called by visualization/management/src/G4VisCommands.cc with "EndOfEvent" argument<br>
   It have to pause the session command terminal.<br>
   Call SecondaryLoop to wait for exit event<br>
   @param aState
   @see : G4VisCommandReviewKeptEvents::SetNewValue
*/
void G4UIQt::PauseSessionStart (
 G4String aState
)
{
  if (!aState) return;

#ifdef GEANT4_QT_DEBUG
  printf("G4UIQt::PauseSessionStart\n");
#endif
  if(aState=="G4_pause> ") {  // TO KEEP
    SecondaryLoop ("Pause, type continue to exit this state"); // TO KEEP
  } // TO KEEP

  if(aState=="EndOfEvent") { // TO KEEP
    // Picking with feed back in event data Done here !!!
    SecondaryLoop ("End of event, type continue to exit this state"); // TO KEEP
  } // TO KEEP
}



/**
   Begin the secondary loop
   @param a_prompt : label to display as the prompt label
 */
void G4UIQt::SecondaryLoop (
 G4String aPrompt
)
{
  if (!aPrompt) return;

#ifdef GEANT4_QT_DEBUG
  printf("G4UIQt::SecondaryLoop\n");
#endif
  G4Qt* interactorManager = G4Qt::getInstance (); // TO KEEP ?
  Prompt(aPrompt); // TO KEEP
  exitPause = false; // TO KEEP
  void* event; // TO KEEP
  while((event = interactorManager->GetEvent())!=NULL) {  // TO KEEP
    interactorManager->DispatchEvent(event); // TO KEEP
    if(exitPause==true) break; // TO KEEP
  } // TO KEEP
  Prompt("session"); // TO KEEP
}



/**
   Receive a cout from Geant4. We have to display it in the cout zone
   @param aString : label to add in the display area
   @return 0
*/
G4int G4UIQt::ReceiveG4cout (
 G4String aString
)
{
  if (!aString) return 0;
  G4Qt* interactorManager = G4Qt::getInstance ();
  if (!interactorManager) return 0;
  
#if QT_VERSION < 0x040000
  fTextArea->append(QString((char*)aString.data()).simplifyWhiteSpace());
  fTextArea->verticalScrollBar()->setValue(fTextArea->verticalScrollBar()->maxValue());
#else
  fTextArea->append(QString((char*)aString.data()).trimmed());
  fTextArea->verticalScrollBar()->setSliderPosition(fTextArea->verticalScrollBar()->maximum());
#endif
  interactorManager->FlushAndWaitExecution();
  return 0;
}


/**
   Receive a cerr from Geant4. We have to display it in the cout zone
   @param aString : label to add in the display area
   @return 0
*/
G4int G4UIQt::ReceiveG4cerr (
 G4String aString
)
{
  if (!aString) return 0;
  G4Qt* interactorManager = G4Qt::getInstance ();
  if (!interactorManager) return 0;

#if QT_VERSION < 0x040000
  QColor previousColor = fTextArea->color();
  fTextArea->setColor(Qt::red);
  fTextArea->append(QString((char*)aString.data()).simplifyWhiteSpace());
  fTextArea->setColor(previousColor);
  fTextArea->verticalScrollBar()->setValue(fTextArea->verticalScrollBar()->maxValue());
#else
  QColor previousColor = fTextArea->textColor();
  fTextArea->setTextColor(Qt::red);
  fTextArea->append(QString((char*)aString.data()).trimmed());
  fTextArea->setTextColor(previousColor);
  fTextArea->verticalScrollBar()->setSliderPosition(fTextArea->verticalScrollBar()->maximum());
#endif
  interactorManager->FlushAndWaitExecution();
  return 0;
}



/**
   Add a new menu to the menu bar
   @param aName name of menu
   @param aLabel label to display
 */
void G4UIQt::AddMenu (
 const char* aName
,const char* aLabel
)
{
  if (aName == NULL) return;
  if (aLabel == NULL) return;

#if QT_VERSION < 0x040000
  QPopupMenu *fileMenu = new QPopupMenu( fMainWindow);
  fMainWindow->menuBar()->insertItem( aLabel, fileMenu );
#else
  QMenu *fileMenu = new QMenu(aLabel);
  fMainWindow->menuBar()->insertMenu(fMainWindow->menuBar()->actions().last(),fileMenu); 
#endif

  AddInteractor (aName,(G4Interactor)fileMenu);
}


/**
   Add a new button to a menu
   @param aMenu : parent menu
   @param aLabel : label to display
   @param aCommand : command to execute as a callback
 */
void G4UIQt::AddButton (
 const char* aMenu
,const char* aLabel
,const char* aCommand
)
{
  if(aMenu==NULL) return; // TO KEEP
  if(aLabel==NULL) return; // TO KEEP
  if(aCommand==NULL) return; // TO KEEP

#if QT_VERSION < 0x040000
  QPopupMenu *parent = (QPopupMenu*)GetInteractor(aMenu);
#else
  QMenu *parent = (QMenu*)GetInteractor(aMenu);
#endif

  if(parent==NULL) return;
  
  QSignalMapper *signalMapper = new QSignalMapper(this);
#if QT_VERSION < 0x030200
  QAction *action = new QAction(QString(aLabel),QString(aLabel),QKeySequence::QKeySequence (),signalMapper, SLOT(map()));
  action->addTo(parent);
 connect(action,SIGNAL(activated()),signalMapper,SLOT(map()));

#elif QT_VERSION < 0x040000
  QAction *action = new QAction(QString(aLabel),QKeySequence::QKeySequence (),signalMapper, SLOT(map()));
  action->addTo(parent);
 connect(action,SIGNAL(activated()),signalMapper,SLOT(map()));

#else
  QAction *action = parent->addAction(aLabel, signalMapper, SLOT(map()));

#endif
  connect(signalMapper, SIGNAL(mapped(const QString &)),this, SLOT(ButtonCallback(const QString&)));
  signalMapper->setMapping(action, QString(aCommand));
}




/**
   Open the help dialog in a separate window.<br>
   This will be display as a tree widget.<br>
   Implementation of <b>void G4VBasicShell::TerminalHelp(G4String newCommand)</b>

   @param newCommand : open the tree widget item on this command if is set
*/
void G4UIQt::TerminalHelp(
 G4String newCommand
)
{
  // Create the help dialog
  if (!fHelpDialog) {
#if QT_VERSION < 0x040000
    fHelpDialog = new QDialog(0,0,FALSE,Qt::WStyle_Title | Qt::WStyle_SysMenu | Qt::WStyle_MinMax );
#else
    fHelpDialog = new QDialog(0,Qt::WindowTitleHint | Qt::WindowSystemMenuHint | Qt::WindowMinMaxButtonsHint);
#endif
    QVBoxLayout *vLayout = new QVBoxLayout(fHelpDialog);
    QWidget *helpWidget = new QWidget(fHelpDialog);
    QSplitter *splitter = new QSplitter(Qt::Horizontal,fHelpDialog);
    QPushButton *exitButton = new QPushButton("Exit",fHelpDialog);
    exitButton->setAutoDefault(false);
    connect(exitButton, SIGNAL(clicked()), fHelpDialog,SLOT(close()));
    
    QHBoxLayout *helpLayout = new QHBoxLayout(helpWidget);
#if QT_VERSION < 0x040000
    helpLayout->add(new QLabel("Search :",helpWidget));
#else
    helpLayout->addWidget(new QLabel("Search :",helpWidget));
#endif
    helpLine = new QLineEdit(fHelpDialog);
#if QT_VERSION < 0x040000
    helpLayout->add(helpLine);
    connect( helpLine, SIGNAL( returnPressed () ), this, SLOT( lookForHelpStringCallback() ) );
#else
    helpLayout->addWidget(helpLine);
    connect( helpLine, SIGNAL( editingFinished () ), this, SLOT( lookForHelpStringCallback() ) );
#endif

    // the help tree
#if QT_VERSION < 0x040000
    fHelpTreeWidget = new QListView(splitter);
#else
    fHelpTreeWidget = new QTreeWidget();
#endif
    fHelpTreeWidget = CreateHelpTree();

    fHelpArea = new QTextEdit(splitter);
    fHelpArea->setReadOnly(true);

    // Set layouts

#if QT_VERSION >= 0x040000
    if (fHelpTreeWidget)
      splitter->addWidget(fHelpTreeWidget);
    splitter->addWidget(fHelpArea);
#endif


#if QT_VERSION >= 0x040000
    vLayout->addWidget(helpWidget);
    vLayout->addWidget(splitter,1);
    vLayout->addWidget(exitButton);
#else
    vLayout->addWidget(helpWidget);
    vLayout->addWidget(splitter,1);
    vLayout->addWidget(exitButton);
#endif

    // set the splitter size
#if QT_VERSION >= 0x040000
    QList<int> list;
#else
    QValueList<int> list;
#endif
    list.append( 400 );
    list.append( 400 );
    splitter->setSizes(list);

#if QT_VERSION >= 0x040000
    fHelpDialog->setLayout(vLayout);
#endif

  }

  ActivateCommand(newCommand);

#if QT_VERSION < 0x040000
  fHelpDialog->setCaption( tr( "Help on commands" ));
#else
  fHelpDialog->setWindowTitle(tr("Help on commands")); 
#endif
  fHelpDialog->resize(800,600); 
  fHelpDialog->move(QPoint(400,150));
  fHelpDialog->show();
  fHelpDialog->raise();
#if QT_VERSION < 0x040000
  fHelpDialog->setActiveWindow();
#else
  fHelpDialog->activateWindow();
#endif
}


void G4UIQt::ActivateCommand(
 G4String newCommand
)
{
  if (!fHelpTreeWidget) {
    return;
  }
  // Look for the choosen command "newCommand"
  size_t i = newCommand.index(" ");
  G4String targetCom="";
  if( i != std::string::npos )
    {
      G4String newValue = newCommand(i+1,newCommand.length()-(i+1));
      newValue.strip(G4String::both);
      targetCom = ModifyToFullPathCommand( newValue );
    }
  if (targetCom != "") {
#if QT_VERSION < 0x040000
    QListViewItem* findItem = NULL;
    QListViewItem* tmpItem = fHelpTreeWidget->firstChild();
    while (tmpItem != 0) {
      if (!findItem) {
        findItem = FindTreeItem(tmpItem,QString((char*)targetCom.data()));
      }
      tmpItem = tmpItem->nextSibling();
    }
#else
    QTreeWidgetItem* findItem = NULL;
    for (int a=0;a<fHelpTreeWidget->topLevelItemCount();a++) {
      if (!findItem) {
        findItem = FindTreeItem(fHelpTreeWidget->topLevelItem(a),QString((char*)targetCom.data()));
      }
    }
#endif
    
    if (findItem) {      
      
      //collapsed open item
#if QT_VERSION < 0x040000

      // FIXME : Has to be checked
      QListViewItem* tmpItem = fHelpTreeWidget->firstChild();
      QList<QListViewItem> openItems;
      while ((tmpItem != 0) || (!openItems.isEmpty())) {
        if (tmpItem->isOpen() ) {
          tmpItem->setOpen(false);
          openItems.append(tmpItem);
          tmpItem = tmpItem->firstChild();
        } else {
          tmpItem = tmpItem->nextSibling();
        }
        if (tmpItem == 0) {
          tmpItem = openItems.take(openItems.count()-1);
        }
      }
#else
      QList<QTreeWidgetItem *> selected;

      selected = fHelpTreeWidget->selectedItems();
      if ( selected.count() != 0 ) {
        QTreeWidgetItem * tmp =selected.at( 0 );
        while ( tmp) {
#if QT_VERSION < 0x040202
              fHelpTreeWidget->setItemExpanded(tmp,false); 
#else
          tmp->setExpanded(false);
#endif
          tmp = tmp->parent();
        }
      }
#endif
      
      // clear old selection
      fHelpTreeWidget->clearSelection();

      // set new selection
#if QT_VERSION >= 0x040000
#if QT_VERSION < 0x040202
      fHelpTreeWidget->setItemSelected(findItem,true);
#else
      findItem->setSelected(true);
#endif      
#else
      findItem->setSelected(true);
#endif
      
      // expand parent item
      while ( findItem) {
#if QT_VERSION < 0x040000
        findItem->setOpen(true);
#else
#if QT_VERSION < 0x040202
            fHelpTreeWidget->setItemExpanded(findItem,true); 
#else
        findItem->setExpanded(true);
#endif
#endif
        findItem = findItem->parent();
      }

      // Call the update of the right textArea
      HelpTreeClicCallback();
    }
  }
}



/**
   Create the help tree widget
   @param parent : parent of tree widget
   @return the widget containing the tree or NULL if it could not have beeen created
 */

#if QT_VERSION < 0x040000
QListView * G4UIQt::CreateHelpTree()
#else
QTreeWidget * G4UIQt::CreateHelpTree()
#endif
{
  G4UImanager* UI = G4UImanager::GetUIpointer();
  if(UI==NULL) return NULL;
  G4UIcommandTree * treeTop = UI->GetTree();


  // build widget
#if QT_VERSION < 0x040000
  fHelpTreeWidget->setSelectionMode(QListView::Single);
  fHelpTreeWidget->setRootIsDecorated(true);
  fHelpTreeWidget->addColumn("Command");
  fHelpTreeWidget->header()->setResizeEnabled(FALSE,1);
#else
  fHelpTreeWidget->setSelectionMode(QAbstractItemView::SingleSelection);
  QStringList labels;
  labels << QString("Command");
  fHelpTreeWidget->setHeaderLabels(labels);
#endif

  G4int treeSize = treeTop->GetTreeEntry();
#if QT_VERSION < 0x040000
  QListViewItem * newItem;
#else
  QTreeWidgetItem * newItem;
#endif
  for (int a=0;a<treeSize;a++) {
    // Creating new item

#if QT_VERSION < 0x040000
    newItem = new QListViewItem(fHelpTreeWidget);
    newItem->setText(0,QString((char*)(treeTop->GetTree(a+1)->GetPathName()).data()).simplifyWhiteSpace());
#else
    newItem = new QTreeWidgetItem(fHelpTreeWidget);
    newItem->setText(0,QString((char*)(treeTop->GetTree(a+1)->GetPathName()).data()).trimmed());
#endif


    // look for childs
    CreateChildTree(newItem,treeTop->GetTree(a+1));
    //      items.append(newItem);
  }


#if QT_VERSION < 0x040000
  connect(fHelpTreeWidget, SIGNAL(selectionChanged ()),this, SLOT(HelpTreeClicCallback()));  
  connect(fHelpTreeWidget, SIGNAL(doubleClicked (QListViewItem*)),this, SLOT(HelpTreeDoubleClicCallback()));
#else
  connect(fHelpTreeWidget, SIGNAL(itemSelectionChanged ()),this, SLOT(HelpTreeClicCallback()));  
  connect(fHelpTreeWidget, SIGNAL(itemDoubleClicked (QTreeWidgetItem*,int)),this, SLOT(HelpTreeDoubleClicCallback()));  
#endif

  return fHelpTreeWidget;
}



/**   Fill the Help Tree Widget
   @param aParent : parent item to fill
   @param aCommandTree : commandTree node associate with this part of the Tree
*/
#if QT_VERSION < 0x040000
void G4UIQt::CreateChildTree(
 QListViewItem *aParent
,G4UIcommandTree *aCommandTree
#else
void G4UIQt::CreateChildTree(
 QTreeWidgetItem *aParent
,G4UIcommandTree *aCommandTree
#endif
)
{
  if (aParent == NULL) return;
  if (aCommandTree == NULL) return;


  // Creating new item
#if QT_VERSION < 0x040000
  QListViewItem * newItem;
#else
  QTreeWidgetItem * newItem;
#endif

  // Get the Sub directories
  for (int a=0;a<aCommandTree->GetTreeEntry();a++) {

#if QT_VERSION < 0x040000
      newItem = new QListViewItem(aParent);
      newItem->setText(0,QString((char*)(aCommandTree->GetTree(a+1)->GetPathName()).data()).simplifyWhiteSpace());

#else
    newItem = new QTreeWidgetItem(aParent);
    newItem->setText(0,QString((char*)(aCommandTree->GetTree(a+1)->GetPathName()).data()).trimmed());
#endif

    CreateChildTree(newItem,aCommandTree->GetTree(a+1));
  }



  // Get the Commands

  for (int a=0;a<aCommandTree->GetCommandEntry();a++) {
    
    QStringList stringList;
#if QT_VERSION < 0x040000
    newItem = new QListViewItem(aParent);
    newItem->setText(0,QString((char*)(aCommandTree->GetCommand(a+1)->GetCommandPath()).data()).simplifyWhiteSpace());
    newItem->setOpen(false);

#else
    newItem = new QTreeWidgetItem(aParent);
    newItem->setText(0,QString((char*)(aCommandTree->GetCommand(a+1)->GetCommandPath()).data()).trimmed());
#if QT_VERSION < 0x040202
        fHelpTreeWidget->setItemExpanded(newItem,false); 
#else
    newItem->setExpanded(false);
#endif
#endif
      
  }
}


/** Find a treeItemWidget in the help tree
    @param aCommand item's String to look for
    @return item if found, NULL if not
*/
#if QT_VERSION < 0x040000
QListViewItem* G4UIQt::FindTreeItem(
 QListViewItem *aParent
#else
QTreeWidgetItem* G4UIQt::FindTreeItem(
 QTreeWidgetItem *aParent
#endif
,const QString& aCommand
)
{
  if (aParent == NULL) return NULL;

  if (aParent->text(0) == aCommand)
    return aParent;
  
#if QT_VERSION < 0x040000
  QListViewItem * tmp = NULL;
  QListViewItem* tmpItem = aParent->firstChild();
    while (tmpItem != 0) {
      if (!tmp)
        tmp = FindTreeItem(tmpItem,aCommand);
      tmpItem = tmpItem->nextSibling();
    }

#else
  QTreeWidgetItem * tmp = NULL;
  for (int a=0;a<aParent->childCount();a++) {
    if (!tmp)
      tmp = FindTreeItem(aParent->child(a),aCommand);
  }
#endif
  return tmp;
}


/**   Build the command list parameters in a QString<br>
   Reimplement partialy the G4UIparameter.cc
   @param aCommand : command to list parameters
   @see G4UIparameter::List()
   @see G4UIcommand::List()
   @return the command list parameters, or "" if nothing
*/
QString G4UIQt::GetCommandList (
 const G4UIcommand *aCommand
)
{

  QString txt ="";
  if (aCommand == NULL)
    return txt;

  G4String commandPath = aCommand->GetCommandPath();
  G4String rangeString = aCommand->GetRange();
  G4int n_guidanceEntry = aCommand->GetGuidanceEntries();
  G4int n_parameterEntry = aCommand->GetParameterEntries();
  
  if ((commandPath == "") && 
      (rangeString == "") &&
      (n_guidanceEntry == 0) &&
      (n_parameterEntry == 0)) {
    return txt;
  }

  if((commandPath.length()-1)!='/') {
    txt += "Command " + QString((char*)(commandPath).data()) + "\n";
  }
  txt += "Guidance :\n";
  
  for( G4int i_thGuidance=0; i_thGuidance < n_guidanceEntry; i_thGuidance++ ) {
    txt += QString((char*)(aCommand->GetGuidanceLine(i_thGuidance)).data()) + "\n";
  }
  if( ! rangeString.isNull() ) {
    txt += " Range of parameters : " + QString((char*)(rangeString).data()) + "\n";
  }
  if( n_parameterEntry > 0 ) {
    G4UIparameter *param;
    
    // Re-implementation of G4UIparameter.cc
    
    for( G4int i_thParameter=0; i_thParameter<n_parameterEntry; i_thParameter++ ) {
      param = aCommand->GetParameter(i_thParameter);
      txt += "\nParameter : " + QString((char*)(param->GetParameterName()).data()) + "\n";
      if( ! param->GetParameterGuidance().isNull() )
        txt += QString((char*)(param->GetParameterGuidance()).data())+ "\n" ;
      txt += " Parameter type  : " + QString(QChar(param->GetParameterType())) + "\n";
      if(param->IsOmittable()){
        txt += " Omittable       : True\n";
      } else {
        txt += " Omittable       : False\n";
      }
      if( param->GetCurrentAsDefault() ) {
        txt += " Default value   : taken from the current value\n";
      } else if( ! param->GetDefaultValue().isNull() ) {
        txt += " Default value   : " + QString((char*)(param->GetDefaultValue()).data())+ "\n";
      }
      if( ! param->GetParameterRange().isNull() ) {
        txt += " Parameter range : " + QString((char*)(param->GetParameterRange()).data())+ "\n";
      }
      if( ! param->GetParameterCandidates().isNull() ) {
        txt += " Candidates      : " + QString((char*)(param->GetParameterCandidates()).data())+ "\n";
      }
    }
  }
  return txt;
}



/**  Implement G4VBasicShell vurtual function
 */
G4bool G4UIQt::GetHelpChoice(
 G4int& aInt
)
{
#ifdef GEANT4_QT_DEBUG
  printf("G4UIQt::GetHelpChoice SHOULD NEVER GO HERE");
#endif
  return true;
}


/**   Implement G4VBasicShell vurtual function
*/
void G4UIQt::ExitHelp(
)
{
#ifdef GEANT4_QT_DEBUG
  printf("G4UIQt::ExitHelp SHOULD NEVER GO HERE");
#endif
}


/**   Event filter method. Every event from QtApplication goes here.<br/>
   We apply a filter only for the Up and Down Arrow press when the QLineEdit<br/>
   is active. If this filter match, Up arrow we give the previous command<br/>
   and Down arrow will give the next if exist.<br/>
   @param obj Emitter of the event
   @param event Kind of event
*/
bool G4UIQt::eventFilter( // Should stay with a minuscule eventFilter because of Qt
 QObject *aObj
,QEvent *aEvent
)
{
  if (aObj == NULL) return false;
  if (aEvent == NULL) return false;

  if (aObj == fCommandHistoryArea) {
    if (aEvent->type() == QEvent::KeyPress) {
      fCommandArea->setFocus();
    }
  }
  if (aObj == fCommandArea) {
    if (aEvent->type() == QEvent::KeyPress) {
      QKeyEvent *e = static_cast<QKeyEvent*>(aEvent);
      if ((e->key() == (Qt::Key_Down)) ||
          (e->key() == (Qt::Key_PageDown)) ||
          (e->key() == (Qt::Key_Up)) ||
          (e->key() == (Qt::Key_PageUp))) {
#if QT_VERSION < 0x040000
        // count rows...
        QListViewItem* tmpItem = fCommandHistoryArea->firstChild();
        int selection = -1;
        int index = 0;
        while (tmpItem != 0) {
          if (tmpItem == fCommandHistoryArea->selectedItem()) {
            selection = index;
          }
          index ++;
          tmpItem = tmpItem->nextSibling();
        }
        if (fCommandHistoryArea->childCount()) {
          if (selection == -1) {
            selection = fCommandHistoryArea->childCount()-1;
          } else {
            if (e->key() == (Qt::Key_Down)) {
              if (selection <(fCommandHistoryArea->childCount()-1))
                selection++;
            } else if (e->key() == (Qt::Key_PageDown)) {
              selection = fCommandHistoryArea->childCount()-1;
#else
        int selection = fCommandHistoryArea->currentRow();
        if (fCommandHistoryArea->count()) {
          if (selection == -1) {
            selection = fCommandHistoryArea->count()-1;
          } else {
            if (e->key() == (Qt::Key_Down)) {
              if (selection <(fCommandHistoryArea->count()-1))
                selection++;
            } else if (e->key() == (Qt::Key_PageDown)) {
              selection = fCommandHistoryArea->count()-1;
#endif
            } else if (e->key() == (Qt::Key_Up)) {
              if (selection >0)
                selection --;
            } else if (e->key() == (Qt::Key_PageUp)) {
              selection = 0;
            }
          }
          fCommandHistoryArea->clearSelection();
#if QT_VERSION < 0x040000
          QListViewItem* tmpItem = fCommandHistoryArea->firstChild();
          int index = 0;
          while (tmpItem != 0) {
            if (index == selection) {
              tmpItem->setSelected(true);
              fCommandHistoryArea->setCurrentItem(tmpItem);
          }
          index ++;
          tmpItem = tmpItem->nextSibling();
        }
#else
#if QT_VERSION < 0x040202
          fCommandHistoryArea->setItemSelected(fCommandHistoryArea->item(selection),true);
#else
          fCommandHistoryArea->item(selection)->setSelected(true);
#endif      
          fCommandHistoryArea->setCurrentItem(fCommandHistoryArea->item(selection));
#endif
        }
      } else if (e->key() == (Qt::Key_Tab)) {
#if QT_VERSION < 0x040000
        G4String ss = Complete(fCommandArea->text().ascii());
#else
        G4String ss = Complete(fCommandArea->text().toStdString().c_str());
#endif
        fCommandArea->setText((char*)(ss.data()));

        // do not pass by parent, it will disable widget tab focus !
        return true;
      }
    }
  }
  // pass the event on to the parent class
  return QObject::eventFilter(aObj, aEvent);
}




/***************************************************************************/
//
//             SLOTS DEFINITIONS
//
/***************************************************************************/

/**   Called when user give "help" command.
*/
void G4UIQt::ShowHelpCallback (
)
{
  TerminalHelp("");
}


/**   Called when user click on clear button. Clear the text Output area
*/
void G4UIQt::ClearButtonCallback (
)
{
  fTextArea->clear();
}

/**   Called when user exit session
*/
void G4UIQt::ExitSession (
)
{
  SessionTerminate();
}


/**   Callback call when "click on a menu entry.<br>
   Send the associated command to geant4
*/
void G4UIQt::CommandEnteredCallback (
)
{
#if QT_VERSION < 0x040000
  G4String command (fCommandArea->text().ascii());
  if (fCommandArea->text().simplifyWhiteSpace() != "") {

    QListViewItem *newItem = new QListViewItem(fCommandHistoryArea);
    newItem->setText(0,fCommandArea->text());
    fCommandHistoryArea->insertItem(newItem);
    // now we have to arrange 
    QListViewItem *temp= fCommandHistoryArea->lastItem();
    for (int i=0; i<fCommandHistoryArea->childCount()-1;i++) {
      fCommandHistoryArea->takeItem(temp);
      fCommandHistoryArea->insertItem(temp);
      temp= fCommandHistoryArea->lastItem();
    }
#else
  G4String command (fCommandArea->text().toStdString().c_str());
  if (fCommandArea->text().trimmed() != "") {
    fCommandHistoryArea->addItem(fCommandArea->text());
#endif
    fCommandHistoryArea->clearSelection();
    fCommandHistoryArea->setCurrentItem(NULL);
    fCommandArea->setText("");

    G4Qt* interactorManager = G4Qt::getInstance ();
    if (interactorManager) { 
      interactorManager->FlushAndWaitExecution();
    }
    if (command(0,4) != "help") {
      ApplyShellCommand (command,exitSession,exitPause);
    } else {
      TerminalHelp(command);
    }
    if(exitSession==true) 
      SessionTerminate();
  }
}


/**   Callback call when "enter" clicked on the command zone.<br>
   Send the command to geant4
   @param aCommand
*/
void G4UIQt::ButtonCallback (
 const QString& aCommand
)
{
#if QT_VERSION < 0x040000
  G4String ss = G4String(aCommand.ascii());
#else
  G4String ss = G4String(aCommand.toStdString().c_str());
#endif
  ApplyShellCommand(ss,exitSession,exitPause);
  if(exitSession==true) 
    SessionTerminate();
}



/**   This callback is activated when user selected a item in the help tree
*/
void G4UIQt::HelpTreeClicCallback (
)
{
#if QT_VERSION < 0x040000
  QListViewItem* item =  NULL;
#else
  QTreeWidgetItem* item =  NULL;
#endif
  if (!fHelpTreeWidget)
    return ;

  if (!fHelpArea)
    return;
  
#if QT_VERSION < 0x040000
  item =fHelpTreeWidget->selectedItem();
#else
  QList<QTreeWidgetItem *> list =fHelpTreeWidget->selectedItems();
  if (list.isEmpty())
    return;
  item = list.first();
#endif
  if (!item)
    return;
  
  G4UImanager* UI = G4UImanager::GetUIpointer();
  if(UI==NULL) return;
  G4UIcommandTree * treeTop = UI->GetTree();



  std::string itemText;
#if QT_VERSION < 0x040000
  itemText = std::string(item->text(0).ascii());
#else
  itemText = std::string(item->text(0).toStdString());
#endif

  G4UIcommand* command = treeTop->FindPath(itemText.c_str());

  if (command) {
#if QT_VERSION >= 0x040000
#if QT_VERSION < 0x040200
    fHelpArea->clear();
    fHelpArea->append(GetCommandList(command));
#else
    fHelpArea->setText(GetCommandList(command));
#endif
#else
    fHelpArea->setText(GetCommandList(command));
#endif
  } else {  // this is a command
    G4UIcommandTree* path = treeTop->FindCommandTree(itemText.c_str());
    if ( path) {
      // this is not a command, this is a sub directory
      // We display the Title
#if QT_VERSION >= 0x040000
#if QT_VERSION < 0x040200
      fHelpArea->clear();
      fHelpArea->append(path->GetTitle().data());
#else
      fHelpArea->setText(path->GetTitle().data());
#endif
#else
      fHelpArea->setText(path->GetTitle().data());
#endif
    }
  }
}
 
/**   This callback is activated when user double clic on a item in the help tree
*/
void G4UIQt::HelpTreeDoubleClicCallback (
)
{
  HelpTreeClicCallback();

#if QT_VERSION < 0x040000
  QListViewItem* item =  NULL;
#else
  QTreeWidgetItem* item =  NULL;
#endif
  if (!fHelpTreeWidget)
    return ;

  if (!fHelpArea)
    return;
  
#if QT_VERSION < 0x040000
  item =fHelpTreeWidget->selectedItem();
#else
  QList<QTreeWidgetItem *> list =fHelpTreeWidget->selectedItems();
  if (list.isEmpty())
    return;
  item = list.first();
#endif
  if (!item)
    return;

  fCommandArea->clear();
  fCommandArea->setText(item->text(0));
}


/**   Callback called when user select an old command in the command history<br>
   Give it to the command area.
*/
void G4UIQt::CommandHistoryCallback(
)
{
#if QT_VERSION < 0x040000
  QListViewItem* item =  NULL;
#else
  QListWidgetItem* item =  NULL;
#endif
  if (!fCommandHistoryArea)
    return ;

  
#if QT_VERSION < 0x040000
  item =fCommandHistoryArea->selectedItem();
#else
  QList<QListWidgetItem *> list =fCommandHistoryArea->selectedItems();
  if (list.isEmpty())
    return;
  item = list.first();
#endif
  if (!item)
    return;
#if QT_VERSION < 0x040000
  fCommandArea->setText(item->text(0));
#else
  fCommandArea->setText(item->text());
#endif

}


/**   Callback called when user give a new string to look for<br>
   Display a list of matching commands descriptions. If no string is set,
   will display the complete help tree
*/
void G4UIQt::lookForHelpStringCallback(
)
{
#if QT_VERSION < 0x040200
  fHelpArea->clear();
#else
  fHelpArea->setText("");
#endif
  if (helpLine->text() =="") {
    // clear old help tree
    fHelpTreeWidget->clear();
#if QT_VERSION < 0x040000
    fHelpTreeWidget->removeColumn(1);
    fHelpTreeWidget->removeColumn(0);
#endif
    CreateHelpTree();
    return;
  }

  // the help tree
  G4UImanager* UI = G4UImanager::GetUIpointer();
  if(UI==NULL) return;
  G4UIcommandTree * treeTop = UI->GetTree();
  
  G4int treeSize = treeTop->GetTreeEntry();

  // clear old help tree
  fHelpTreeWidget->clear();
#if QT_VERSION < 0x040000
  fHelpTreeWidget->removeColumn(1);
  fHelpTreeWidget->removeColumn(0);
#endif

  // look for new items

  int tmp = 0;
#if QT_VERSION < 0x040000
  int multFactor = 1000; // factor special for having double keys in Qt3
  int doubleKeyAdd = 0;  // decay for doubleKeys in Qt3
#endif

  QMap<int,QString> commandResultMap;
  QMap<int,QString> commandChildResultMap;

  for (int a=0;a<treeSize;a++) {
    G4UIcommand* command = treeTop->FindPath(treeTop->GetTree(a+1)->GetPathName().data());
#if QT_VERSION > 0x040000
    tmp = GetCommandList (command).count(helpLine->text(),Qt::CaseInsensitive);
#else
    tmp = GetCommandList (command).contains(helpLine->text(),false);
#endif
    if (tmp >0) {
#if QT_VERSION > 0x040000
      commandResultMap.insertMulti(tmp,QString((char*)(treeTop->GetTree(a+1)->GetPathName()).data()));
#else // tricky thing for Qt3...
      doubleKeyAdd = 0;
      while (commandResultMap.find( tmp*multFactor+doubleKeyAdd) != commandResultMap.end()) {
        doubleKeyAdd ++;
      }
      commandResultMap.insert( tmp*multFactor+doubleKeyAdd,QString((char*)(treeTop->GetTree(a+1)->GetPathName()).data()) );
#endif
    }
    // look for childs
    commandChildResultMap = LookForHelpStringInChildTree(treeTop->GetTree(a+1),helpLine->text());
    // insert new childs
    if (!commandChildResultMap.empty()) {
#if QT_VERSION > 0x040000
      QMap<int,QString>::const_iterator i = commandChildResultMap.constBegin();
      while (i != commandChildResultMap.constEnd()) {
        commandResultMap.insertMulti(i.key(),i.value());
#else // tricky thing for Qt3...
      QMap<int,QString>::const_iterator i = commandChildResultMap.begin();
      while (i != commandChildResultMap.end()) {
        doubleKeyAdd = 0;
        while (commandResultMap.find( i.key()*multFactor+doubleKeyAdd) != commandResultMap.end()) {
          doubleKeyAdd ++;
        }
        commandResultMap.insert(i.key()*multFactor+doubleKeyAdd,i.data());
#endif
        i++;
      }
      commandChildResultMap.clear();
    }
  }

  // build new help tree
#if QT_VERSION < 0x040000
  fHelpTreeWidget->setSelectionMode(QListView::Single);
  fHelpTreeWidget->setRootIsDecorated(true);
  fHelpTreeWidget->addColumn("Command");
  fHelpTreeWidget->addColumn("Match");
  //  fHelpTreeWidget->header()->setResizeEnabled(FALSE,1);
#else
  fHelpTreeWidget->setSelectionMode(QAbstractItemView::SingleSelection);
  fHelpTreeWidget->setColumnCount(2);
  QStringList labels;
  labels << QString("Command") << QString("Match");
  fHelpTreeWidget->setHeaderLabels(labels);
#endif

  if (commandResultMap.empty()) {
#if QT_VERSION < 0x040200
    fHelpArea->clear();
    fHelpArea->append("No match found");
#else
    fHelpArea->setText("No match found");
#endif
    return;
  }

#if QT_VERSION > 0x040000
  QMap<int,QString>::const_iterator i = commandResultMap.constEnd();
#else
  QMap<int,QString>::const_iterator i = commandResultMap.end();
#endif
  i--;
  // 10 maximum progress values
  float multValue = 10.0/(float)(i.key());
  QString progressChar = "|";
  QString progressStr = "|";

#if QT_VERSION < 0x040000
  QListViewItem * newItem;
#else
  QTreeWidgetItem * newItem;
#endif
  bool end = false;
  while (!end) {
#if QT_VERSION > 0x040000
    if (i == commandResultMap.constBegin()) {
#else
    if (i == commandResultMap.begin()) {
#endif
      end = true;
    }
    for(int a=0;a<int(i.key()*multValue);a++) {
      progressStr += progressChar;
    }
#if QT_VERSION < 0x040000
    newItem = new QListViewItem(fHelpTreeWidget);
    newItem->setText(0,i.data().simplifyWhiteSpace());
#else
    newItem = new QTreeWidgetItem(fHelpTreeWidget);
    newItem->setText(0,i.value().trimmed());
#endif
    newItem->setText(1,progressStr);
    
#if QT_VERSION >= 0x040200
    newItem->setForeground ( 1, QBrush(Qt::blue) );
#endif
    progressStr = "|";
    i--;
  }
  // FIXME :  to be checked on Qt3
#if QT_VERSION < 0x040000
  fHelpTreeWidget->setColumnWidthMode (1,QListView::Maximum);
  fHelpTreeWidget->setSorting(1,false);
#else
  fHelpTreeWidget->resizeColumnToContents (0);
  fHelpTreeWidget->sortItems(1,Qt::DescendingOrder);
  //  fHelpTreeWidget->setColumnWidth(1,10);//resizeColumnToContents (1);
#endif
}




QMap<int,QString> G4UIQt::LookForHelpStringInChildTree(
 G4UIcommandTree *aCommandTree
,const QString & text
 )
{
  QMap<int,QString> commandResultMap;
  if (aCommandTree == NULL) return commandResultMap;
  
#if QT_VERSION < 0x040000
  int multFactor = 1000; // factor special for having double keys in Qt3
  int doubleKeyAdd = 0;  // decay for doubleKeys in Qt3
#endif

  // Get the Sub directories
  int tmp = 0;
  QMap<int,QString> commandChildResultMap;
  
  for (int a=0;a<aCommandTree->GetTreeEntry();a++) {
    const G4UIcommand* command = aCommandTree->GetGuidance();
#if QT_VERSION > 0x040000
    tmp = GetCommandList (command).count(text,Qt::CaseInsensitive);
#else
    tmp = GetCommandList (command).contains(text,false);
#endif
    if (tmp >0) {
#if QT_VERSION > 0x040000
      commandResultMap.insertMulti(tmp,QString((char*)(aCommandTree->GetTree(a+1)->GetPathName()).data()));
#else // tricky thing for Qt3...
      doubleKeyAdd = 0;
      while (commandResultMap.find( tmp*multFactor+doubleKeyAdd) != commandResultMap.end()) {
        doubleKeyAdd ++;
      }
      commandResultMap.insert(tmp*multFactor+doubleKeyAdd,QString((char*)(aCommandTree->GetTree(a+1)->GetPathName()).data()));
#endif
    }
    // look for childs
    commandChildResultMap = LookForHelpStringInChildTree(aCommandTree->GetTree(a+1),text);
    
    if (!commandChildResultMap.empty()) {
      // insert new childs
#if QT_VERSION > 0x040000
      QMap<int,QString>::const_iterator i = commandChildResultMap.constBegin();
      while (i != commandChildResultMap.constEnd()) {
        commandResultMap.insertMulti(i.key(),i.value());
#else // tricky thing for Qt3...
      QMap<int,QString>::const_iterator i = commandChildResultMap.begin();
      while (i != commandChildResultMap.end()) {
        doubleKeyAdd = 0;
        while (commandResultMap.find( i.key()*multFactor+doubleKeyAdd) != commandResultMap.end()) {
          doubleKeyAdd ++;
        }
        commandResultMap.insert(i.key()*multFactor+doubleKeyAdd,i.data());
#endif
        i++;
      }
      commandChildResultMap.clear();
    }
  }
  // Get the Commands
  
  for (int a=0;a<aCommandTree->GetCommandEntry();a++) {
    const G4UIcommand* command = aCommandTree->GetCommand(a+1);
#if QT_VERSION > 0x040000
    tmp = GetCommandList (command).count(text,Qt::CaseInsensitive);
#else
    tmp = GetCommandList (command).contains(text,false);
#endif
    if (tmp >0) {
#if QT_VERSION > 0x040000
      commandResultMap.insertMulti(tmp,QString((char*)(aCommandTree->GetCommand(a+1)->GetCommandPath()).data()));
#else // tricky thing for Qt3...
      doubleKeyAdd = 0;
      while (commandResultMap.find( tmp*multFactor+doubleKeyAdd) != commandResultMap.end()) {
        doubleKeyAdd ++;
      }
      commandResultMap.insert(tmp*multFactor+doubleKeyAdd,QString((char*)(aCommandTree->GetCommand(a+1)->GetCommandPath()).data()));
#endif
#ifdef GEANT4_QT_DEBUG
#endif
    }
    
  }
  return commandResultMap;
}
#endif