FEM: ccx constraint section print, add task panel

src/Mod/Fem/CMakeLists.txt

@@ -358,6 +358,7 @@ SET(FemGuiTaskPanels_SRCS
     femtaskpanels/task_constraint_electrostaticpotential.py
     femtaskpanels/task_constraint_flowvelocity.py
     femtaskpanels/task_constraint_initialflowvelocity.py
+    femtaskpanels/task_constraint_sectionprint.py
     femtaskpanels/task_constraint_tie.py
     femtaskpanels/task_element_fluid1D.py
     femtaskpanels/task_element_geometry1D.py

src/Mod/Fem/femtaskpanels/task_constraint_sectionprint.py

@@ -0,0 +1,102 @@
+# ***************************************************************************
+# *   Copyright (c) 2020 Bernd Hahnebach <bernd@bimstatik.org>              *
+# *                                                                         *
+# *   This file is part of the FreeCAD CAx development system.              *
+# *                                                                         *
+# *   This program is free software; you can redistribute it and/or modify  *
+# *   it under the terms of the GNU Lesser General Public License (LGPL)    *
+# *   as published by the Free Software Foundation; either version 2 of     *
+# *   the License, or (at your option) any later version.                   *
+# *   for detail see the LICENCE text file.                                 *
+# *                                                                         *
+# *   This program is distributed in the hope that it will be useful,       *
+# *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+# *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+# *   GNU Library General Public License for more details.                  *
+# *                                                                         *
+# *   You should have received a copy of the GNU Library General Public     *
+# *   License along with this program; if not, write to the Free Software   *
+# *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
+# *   USA                                                                   *
+# *                                                                         *
+# ***************************************************************************
+
+__title__ = "FreeCAD FEM constraint section print task panel for the document object"
+__author__ = "Bernd Hahnebach"
+__url__ = "http://www.freecadweb.org"
+
+## @package task_constraint_sectionprint
+#  \ingroup FEM
+#  \brief task panel for constraint section print object
+
+from PySide import QtGui
+
+import FreeCAD
+import FreeCADGui
+
+from femguiutils import selection_widgets
+
+
+# TODO uses the old style Add button, move to the new style. See constraint fixed
+class _TaskPanel:
+    """
+    The TaskPanel for editing References property of ConstraintSectionPrint objects
+    """
+
+    def __init__(self, obj):
+
+        self.obj = obj
+
+        # parameter widget
+        self.parameterWidget = FreeCADGui.PySideUic.loadUi(
+            FreeCAD.getHomePath() + "Mod/Fem/Resources/ui/ConstraintSectionPrint.ui"
+        )
+
+        # geometry selection widget
+        self.selectionWidget = selection_widgets.GeometryElementsSelection(
+            obj.References,
+            ["Face"]
+        )
+
+        # form made from param and selection widget
+        self.form = [self.parameterWidget, self.selectionWidget]
+
+    def accept(self):
+        # check values
+        items = len(self.selectionWidget.references)
+        FreeCAD.Console.PrintMessage(
+            "Task panel: found references: {}\n{}\n"
+            .format(items, self.selectionWidget.references)
+        )
+
+        if items != 1:
+            msgBox = QtGui.QMessageBox()
+            msgBox.setIcon(QtGui.QMessageBox.Question)
+            msgBox.setText(
+                "Constraint SectionPrint requires exactly one face\n\nfound references: {}"
+                .format(items)
+            )
+            msgBox.setWindowTitle("FreeCAD FEM Constraint SectionPrint")
+            retryButton = msgBox.addButton(QtGui.QMessageBox.Retry)
+            ignoreButton = msgBox.addButton(QtGui.QMessageBox.Ignore)
+            msgBox.exec_()
+
+            if msgBox.clickedButton() == retryButton:
+                return False
+            elif msgBox.clickedButton() == ignoreButton:
+                pass
+        self.obj.References = self.selectionWidget.references
+        self.recompute_and_set_back_all()
+        return True
+
+    def reject(self):
+        self.recompute_and_set_back_all()
+        return True
+
+    def recompute_and_set_back_all(self):
+        doc = FreeCADGui.getDocument(self.obj.Document)
+        doc.Document.recompute()
+        self.selectionWidget.setback_listobj_visibility()
+        if self.selectionWidget.sel_server:
+            FreeCADGui.Selection.removeObserver(self.selectionWidget.sel_server)
+        doc.resetEdit()

src/Mod/Fem/femviewprovider/view_constraint_sectionprint.py

@@ -29,6 +29,7 @@ __url__ = "http://www.freecadweb.org"
 #  \ingroup FEM
 #  \brief view provider for constraint section print object
 
+from femtaskpanels import task_constraint_sectionprint
 from . import view_base_femconstraint
 
 
@@ -37,4 +38,10 @@ class VPConstraintSectionPrint(view_base_femconstraint.VPBaseFemConstraint):
     A View Provider for the ConstraintSectionPrint object
     """
 
-    pass
+    def setEdit(self, vobj, mode=0):
+        view_base_femconstraint.VPBaseFemConstraint.setEdit(
+            self,
+            vobj,
+            mode,
+            task_constraint_sectionprint._TaskPanel
+        )