Changes required in SMTK to match ParaView update.

A method has been removed from ParaView's point-picking helper
class for property widgets (the functionality is now automatic).
Detect this and avoid referencing the method.

doc/release/notes/widget-shortcuts.md

++ A change in ParaView's pqPointPickingHelper has removed the
+  setShortcutEnabled method. If you were previously connecting
+  this method to a pqInteractivePropertyWidget subclass (like
+  the cone widget in SMTK), replace that signal connection
+  with an instantiation of pqPointPickingVisibilityHelper.
+  See `smtk/extension/paraview/widgets/plugin/pqConePropertyWidget.cxx`
+  for an example of its usage.

smtk/extension/paraview/widgets/CMakeLists.txt

 set(headers
-  pqSMTKAttributeItemWidgetP.h)
+  pqPointPickingVisibilityHelper.h
+  pqSMTKAttributeItemWidgetP.h
+)
 
 set(classes
   Registrar

smtk/extension/paraview/widgets/plugin/pqConePropertyWidget.cxx

@@ -9,6 +9,7 @@
 //=========================================================================
 #include "smtk/extension/paraview/widgets/plugin/pqConePropertyWidget.h"
 #include "smtk/extension/paraview/widgets/plugin/ui_pqConePropertyWidget.h"
+#include "smtk/extension/paraview/widgets/pqPointPickingVisibilityHelper.h"
 
 #include "pqCoreUtilities.h"
 #include "pqPointPickingHelper.h"
@@ -123,42 +124,42 @@ pqConePropertyWidget::pqConePropertyWidget(
 
   pqPointPickingHelper* pickHelper = new pqPointPickingHelper(QKeySequence(tr("P")), false, this);
   pickHelper->connect(this, SIGNAL(viewChanged(pqView*)), SLOT(setView(pqView*)));
-  pickHelper->connect(this, SIGNAL(widgetVisibilityUpdated(bool)), SLOT(setShortcutEnabled(bool)));
   this->connect(
     pickHelper, SIGNAL(pick(double, double, double)), SLOT(pick(double, double, double)));
+  pqPointPickingVisibilityHelper<pqPointPickingHelper>{ *this, *pickHelper };
 
   pqPointPickingHelper* pickHelper2 =
     new pqPointPickingHelper(QKeySequence(tr("Ctrl+P")), true, this);
   pickHelper2->connect(this, SIGNAL(viewChanged(pqView*)), SLOT(setView(pqView*)));
-  pickHelper2->connect(this, SIGNAL(widgetVisibilityUpdated(bool)), SLOT(setShortcutEnabled(bool)));
   this->connect(
     pickHelper2, SIGNAL(pick(double, double, double)), SLOT(pick(double, double, double)));
+  pqPointPickingVisibilityHelper<pqPointPickingHelper>{ *this, *pickHelper2 };
 
   pqPointPickingHelper* pickHelper3 = new pqPointPickingHelper(QKeySequence(tr("1")), false, this);
   pickHelper3->connect(this, SIGNAL(viewChanged(pqView*)), SLOT(setView(pqView*)));
-  pickHelper3->connect(this, SIGNAL(widgetVisibilityUpdated(bool)), SLOT(setShortcutEnabled(bool)));
   this->connect(
     pickHelper3, SIGNAL(pick(double, double, double)), SLOT(pickPoint1(double, double, double)));
+  pqPointPickingVisibilityHelper<pqPointPickingHelper>{ *this, *pickHelper3 };
 
   pqPointPickingHelper* pickHelper4 =
     new pqPointPickingHelper(QKeySequence(tr("Ctrl+1")), true, this);
   pickHelper4->connect(this, SIGNAL(viewChanged(pqView*)), SLOT(setView(pqView*)));
-  pickHelper4->connect(this, SIGNAL(widgetVisibilityUpdated(bool)), SLOT(setShortcutEnabled(bool)));
   this->connect(
     pickHelper4, SIGNAL(pick(double, double, double)), SLOT(pickPoint1(double, double, double)));
+  pqPointPickingVisibilityHelper<pqPointPickingHelper>{ *this, *pickHelper4 };
 
   pqPointPickingHelper* pickHelper5 = new pqPointPickingHelper(QKeySequence(tr("2")), false, this);
   pickHelper5->connect(this, SIGNAL(viewChanged(pqView*)), SLOT(setView(pqView*)));
-  pickHelper5->connect(this, SIGNAL(widgetVisibilityUpdated(bool)), SLOT(setShortcutEnabled(bool)));
   this->connect(
     pickHelper5, SIGNAL(pick(double, double, double)), SLOT(pickPoint2(double, double, double)));
+  pqPointPickingVisibilityHelper<pqPointPickingHelper>{ *this, *pickHelper5 };
 
   pqPointPickingHelper* pickHelper6 =
     new pqPointPickingHelper(QKeySequence(tr("Ctrl+2")), true, this);
   pickHelper6->connect(this, SIGNAL(viewChanged(pqView*)), SLOT(setView(pqView*)));
-  pickHelper6->connect(this, SIGNAL(widgetVisibilityUpdated(bool)), SLOT(setShortcutEnabled(bool)));
   this->connect(
     pickHelper6, SIGNAL(pick(double, double, double)), SLOT(pickPoint2(double, double, double)));
+  pqPointPickingVisibilityHelper<pqPointPickingHelper>{ *this, *pickHelper6 };
 
   pqCoreUtilities::connect(
     this->widgetProxy(), vtkCommand::PropertyModifiedEvent, this, SLOT(updateInformationLabels()));

smtk/extension/paraview/widgets/plugin/pqPointPropertyWidget.cxx

@@ -43,6 +43,8 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "pqPointPropertyWidget.h"
 #include "ui_pqPointPropertyWidget.h"
 
+#include "smtk/extension/paraview/widgets/pqPointPickingVisibilityHelper.h"
+
 #include "pqActiveObjects.h"
 #include "pqPointPickingHelper.h"
 
@@ -143,10 +145,9 @@ void pqPointPropertyWidget::setControlState(const std::string& data)
     {
       m_surfacePickHelper = new pqPointPickingHelper(QKeySequence(tr("P")), false, this);
       m_surfacePickHelper->connect(this, SIGNAL(viewChanged(pqView*)), SLOT(setView(pqView*)));
-      m_surfacePickHelper->connect(
-        this, SIGNAL(widgetVisibilityUpdated(bool)), SLOT(setShortcutEnabled(bool)));
       this->connect(m_surfacePickHelper, SIGNAL(pick(double, double, double)),
         SLOT(setWorldPosition(double, double, double)));
+      pqPointPickingVisibilityHelper<pqPointPickingHelper>{ *this, *m_surfacePickHelper };
       m_surfacePickHelper->setView(currView);
     }
 
@@ -154,10 +155,9 @@ void pqPointPropertyWidget::setControlState(const std::string& data)
     {
       m_pointPickHelper = new pqPointPickingHelper(QKeySequence(tr("Ctrl+P")), true, this);
       m_pointPickHelper->connect(this, SIGNAL(viewChanged(pqView*)), SLOT(setView(pqView*)));
-      m_pointPickHelper->connect(
-        this, SIGNAL(widgetVisibilityUpdated(bool)), SLOT(setShortcutEnabled(bool)));
       this->connect(m_pointPickHelper, SIGNAL(pick(double, double, double)),
         SLOT(setWorldPosition(double, double, double)));
+      pqPointPickingVisibilityHelper<pqPointPickingHelper>{ *this, *m_pointPickHelper };
       m_pointPickHelper->setView(currView);
     }
   }

smtk/extension/paraview/widgets/pqPointPickingVisibilityHelper.h

+//=========================================================================
+//  Copyright (c) Kitware, Inc.
+//  All rights reserved.
+//  See LICENSE.txt for details.
+//
+//  This software is distributed WITHOUT ANY WARRANTY; without even
+//  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+//  PURPOSE.  See the above copyright notice for more information.
+//=========================================================================
+#ifndef smtk_extension_paraview_widgets_pqPointPickingVisibilityHelper_h
+#define smtk_extension_paraview_widgets_pqPointPickingVisibilityHelper_h
+
+#include "pqInteractivePropertyWidget.h"
+#include "smtk/extension/paraview/widgets/smtkPQWidgetsExtModule.h"
+
+/// A utility to adapt PV point-picking helpers across an API change.
+template <typename PickHelper>
+struct pqPointPickingVisibilityHelper
+{
+  // pqPointPickingHelper::setShortcutEnabled is no longer available.
+  template <typename Test>
+  static void test(pqInteractivePropertyWidget&, Test&, ...)
+  {
+    // Do nothing
+  }
+
+  // Older ParaView requires pqPointPickingHelper::setShortcutEnabled be connected.
+  template <typename Test>
+  static void test(pqInteractivePropertyWidget& w, Test& obj, decltype(&Test::setShortcutEnabled))
+  {
+    QObject::connect(
+      &w, &pqInteractivePropertyWidget::widgetVisibilityUpdated, &obj, &Test::setShortcutEnabled);
+  }
+
+  pqPointPickingVisibilityHelper(pqInteractivePropertyWidget& w, PickHelper& obj)
+  {
+    pqPointPickingVisibilityHelper::test<PickHelper>(w, obj);
+  }
+};
+
+#endif // smtk_extension_paraview_widgets_pqPointPickingVisibilityHelper_h