void ControlSingleton::closedDialog()
{
    ActiveDialog = 0;
    Gui::DockWnd::CombiView* pcCombiView = qobject_cast<Gui::DockWnd::CombiView*>
        (Gui::DockWindowManager::instance()->getDockWindow("Combo View"));
    // should return the pointer to combo view
    assert(pcCombiView);
    pcCombiView->closedDialog();
}
void ControlSingleton::showModelView()
{
    Gui::DockWnd::CombiView* pcCombiView = qobject_cast<Gui::DockWnd::CombiView*>
        (Gui::DockWindowManager::instance()->getDockWindow("Combo View"));
    if (pcCombiView)
        pcCombiView->showTreeView();
    else if (_taskPanel)
        _taskPanel->raise();
}
QTabWidget* ControlSingleton::tabPanel() const
{
    Gui::DockWnd::CombiView* pcCombiView = qobject_cast<Gui::DockWnd::CombiView*>
        (Gui::DockWindowManager::instance()->getDockWindow("Combo View"));
    // should return the pointer to combo view
    if (pcCombiView)
        return pcCombiView->getTabPanel();
    return 0;
}
void ControlSingleton::closeDialog()
{
    Gui::DockWnd::CombiView* pcCombiView = qobject_cast<Gui::DockWnd::CombiView*>
        (Gui::DockWindowManager::instance()->getDockWindow("Combo View"));
    // should return the pointer to combo view
    if (pcCombiView)
        pcCombiView->closeDialog();
    else if (_taskPanel)
        _taskPanel->removeDialog();
}
void ControlSingleton::closedDialog()
{
    ActiveDialog = 0;
    Gui::DockWnd::CombiView* pcCombiView = qobject_cast<Gui::DockWnd::CombiView*>
        (Gui::DockWindowManager::instance()->getDockWindow("Combo View"));
    // should return the pointer to combo view
    assert(pcCombiView);
    pcCombiView->closedDialog();
    // make sure that the combo view is shown
    QDockWidget* dw = qobject_cast<QDockWidget*>(pcCombiView->parentWidget());
    if (dw)
        dw->setFeatures(QDockWidget::AllDockWidgetFeatures);
}
Gui::TaskView::TaskView* ControlSingleton::taskPanel() const
{
    Gui::DockWnd::CombiView* pcCombiView = qobject_cast<Gui::DockWnd::CombiView*>
        (Gui::DockWindowManager::instance()->getDockWindow("Combo View"));
    // should return the pointer to combo view
    if (pcCombiView)
        return pcCombiView->getTaskPanel();
    // not all workbenches have the combo view enabled
    else if (_taskPanel)
        return _taskPanel;
    // no task panel available
    else
        return 0;
}
void ControlSingleton::showDialog(Gui::TaskView::TaskDialog *dlg)
{
    // only one dialog at a time
    assert(!ActiveDialog || ActiveDialog==dlg);
    Gui::DockWnd::CombiView* pcCombiView = qobject_cast<Gui::DockWnd::CombiView*>
        (Gui::DockWindowManager::instance()->getDockWindow("Combo View"));
    // should return the pointer to combo view
    if (pcCombiView) {
        pcCombiView->showDialog(dlg);
        // make sure that the combo view is shown
        QDockWidget* dw = qobject_cast<QDockWidget*>(pcCombiView->parentWidget());
        if (dw) {
            dw->setVisible(true);
            dw->toggleViewAction()->setVisible(true);
            dw->setFeatures(QDockWidget::DockWidgetMovable|QDockWidget::DockWidgetFloatable);
        }

        if (ActiveDialog == dlg)
            return; // dialog is already defined
        ActiveDialog = dlg;
        connect(dlg, SIGNAL(destroyed()), this, SLOT(closedDialog()));
    }
    // not all workbenches have the combo view enabled
    else if (!_taskPanel) {
        QDockWidget* dw = new QDockWidget();
        dw->setWindowTitle(tr("Task panel"));
        dw->setFeatures(QDockWidget::DockWidgetMovable);
        _taskPanel = new Gui::TaskView::TaskView(dw);
        dw->setWidget(_taskPanel);
        _taskPanel->showDialog(dlg);
        getMainWindow()->addDockWidget(Qt::LeftDockWidgetArea, dw);
        connect(dlg, SIGNAL(destroyed()), dw, SLOT(deleteLater()));

        // if we have the normal tree view available then just tabify with it
        QWidget* treeView = Gui::DockWindowManager::instance()->getDockWindow("Tree view");
        QDockWidget* par = treeView ? qobject_cast<QDockWidget*>(treeView->parent()) : 0;
        if (par && par->isVisible()) {
            getMainWindow()->tabifyDockWidget(par, dw);
            qApp->processEvents(); // make sure that the task panel is tabified now
            dw->show();
            dw->raise();
        }
    }
}