[CHANGE] - empty property tabs do not get displayed.

src/gui/qt4/datasetbrowser/WPropertyIntWidget.cpp

@@ -39,7 +39,7 @@ WPropertyIntWidget::WPropertyIntWidget( WPropInt property, QGridLayout* property
     m_intProperty( property ),
     m_slider( Qt::Horizontal, this ),
     m_edit( this ),
-    m_layout()
+    m_layout( this )
 {
     // initialize members
     m_edit.resize( m_edit.minimumSizeHint().width() , m_edit.size().height() );

src/gui/qt4/datasetbrowser/WPropertyStringWidget.cpp

@@ -36,12 +36,12 @@ WPropertyStringWidget::WPropertyStringWidget( WPropString property, QGridLayout*
     WPropertyWidget( property, propertyGrid, parent ),
     m_stringProperty( property ),
     m_edit( this ),
-    m_layout()
+    m_layout( this )
 {
     // initialize members
     setLayout( &m_layout );
 
-    // layout both against each other
+    // layout
     m_layout.addWidget( &m_edit );
 
     // set the initial values

src/gui/qt4/datasetbrowser/WQtDSBWidget.cpp

@@ -32,7 +32,8 @@ WQtDSBWidget::WQtDSBWidget( std::string name, QWidget* parent  )
     : QWidget( parent ),
     m_name( name.c_str() ),
     m_controlLayout(),
-    m_pageLayout()
+    m_pageLayout(),
+    m_numberOfWidgets( 0 )
 {
     m_pageLayout.addLayout( &m_controlLayout );
 }
@@ -43,41 +44,57 @@ WQtDSBWidget::~WQtDSBWidget()
 
 WPropertyBoolWidget* WQtDSBWidget::addProp( WPropBool property )
 {
+    ++m_numberOfWidgets;
+
     return new WPropertyBoolWidget( property, &m_controlLayout, this );
 }
 
 WPropertyIntWidget* WQtDSBWidget::addProp( WPropInt property )
 {
+    ++m_numberOfWidgets;
+
     return new WPropertyIntWidget( property, &m_controlLayout, this );
 }
 
 WPropertyDoubleWidget* WQtDSBWidget::addProp( WPropDouble property )
 {
+    ++m_numberOfWidgets;
+
     return new WPropertyDoubleWidget( property, &m_controlLayout, this );
 }
 
 WPropertyStringWidget* WQtDSBWidget::addProp( WPropString property )
 {
+    ++m_numberOfWidgets;
+
     return new WPropertyStringWidget( property, &m_controlLayout, this );
 }
 
 WPropertyColorWidget* WQtDSBWidget::addProp( WPropColor property )
 {
+    ++m_numberOfWidgets;
+
     return new WPropertyColorWidget( property, &m_controlLayout, this );
 }
 
 WPropertyFilenameWidget* WQtDSBWidget::addProp( WPropFilename property )
 {
+    ++m_numberOfWidgets;
+
     return new WPropertyFilenameWidget( property, &m_controlLayout, this );
 }
 
 WPropertyTriggerWidget* WQtDSBWidget::addProp( WPropTrigger property )
 {
+    ++m_numberOfWidgets;
+
     return new WPropertyTriggerWidget( property, &m_controlLayout, this );
 }
 
 void WQtDSBWidget::addGroup( WQtDSBWidget* widget )
 {
+    ++m_numberOfWidgets;
+
     // TODO(ebaum): extend it to collapse the group
     QGroupBox* group = new QGroupBox( widget->getName() , this );
     QGridLayout* grid = new QGridLayout();
@@ -105,3 +122,7 @@ void WQtDSBWidget::setName( QString name )
     m_name = name;
 }
 
+bool WQtDSBWidget::isEmpty() const
+{
+    return !m_numberOfWidgets;
+}

src/gui/qt4/datasetbrowser/WQtDSBWidget.h

@@ -60,6 +60,13 @@ public:
      */
     virtual ~WQtDSBWidget();
 
+    /**
+     * True if there are no widgets inside.
+     *
+     * \return true if number of widgets is 0.
+     */
+    bool isEmpty() const;
+
     /**
      * helper function to add a generic button
      * \param label Text on the push button
@@ -188,6 +195,11 @@ private:
      * Layout used for the whole widget.
      */
     QVBoxLayout m_pageLayout;
+
+    /**
+     * The number of widgets inside this one.
+     */
+    unsigned int m_numberOfWidgets;
 };
 
 #endif  // WQTDSBWIDGET_H

src/gui/qt4/datasetbrowser/WQtDatasetBrowser.cpp

@@ -426,7 +426,7 @@ void WQtDatasetBrowser::selectRoiTreeItem()
 
 WQtDSBWidget*  WQtDatasetBrowser::buildPropWidget( boost::shared_ptr< WProperties > props )
 {
-    WQtDSBWidget* tab = new WQtDSBWidget( QString::fromStdString( props->getName() ) );
+    WQtDSBWidget* tab = new WQtDSBWidget( props->getName() );
 
     if ( props.get() )
     {
@@ -563,10 +563,9 @@ void WQtDatasetBrowser::changeRoiTreeItem()
     }
 }
 
-
 int WQtDatasetBrowser::addTabWidgetContent( WQtDSBWidget* content )
 {
-    if ( !content )
+    if ( !content || content->isEmpty() )
     {
         return -1;
     }

src/modules/template/WMTemplate.cpp

@@ -235,6 +235,7 @@ void WMTemplate::properties()
 
     // TODO(ebaum): write
     m_aIntegerOutput = m_infoProperties->addProperty( "Run Count", "Number of run cycles the module made so far.", 0 );
+    m_aIntegerOutput->setPurpose( PV_PURPOSE_INFORMATION );
 }
 
 void WMTemplate::moduleMain()