+ /// Block the model flush of update and intialization of attribute
+ /// In additional to curstom realization it blocks initialization for all feature attributes
+ /// as the current attribute is selection but its modification leads to other attributes change
+ /// \param theAttribute an attribute
+ /// \param theToBlock flag whether the model is blocked or unblocked
+ /// \param isFlushesActived out value if model is blocked, in value if model is unblocked
+ /// to be used to restore flush state when unblocked
+ /// \param isAttributeSetInitializedBlocked out value if model is blocked
+ /// in value if model is unblocked to be used to restore previous state when unblocked
+ /// \param isAttributeSendUpdatedBlocked out value if model signal is blocked
+ virtual void blockAttribute(const AttributePtr& theAttribute, const bool& theToBlock,
+ bool& isFlushesActived,
+ bool& isAttributeSetInitializedBlocked,
+ bool& isAttributeSendUpdatedBlocked);
+
+ /// Returns true if envent is processed.
+ virtual bool processSelection();
+
+ /// Set the given wrapped value to the current widget
+ /// This value should be processed in the widget according to the needs
+ /// The method is called by the current operation to process the operation preselection.
+ /// It is redefined to do nothing if the plane of the sketch has been already set.
+ /// \param theValues the wrapped selection values
+ /// \param theToValidate a validation flag
+ bool setSelectionInternal(const QList<ModuleBase_ViewerPrsPtr>& theValues,
+ const bool theToValidate);
+
+ /// Erase preview planes, disconnect widget, change the view projection
+ /// \param thePrs a selected presentation
+ void updateByPlaneSelected(const ModuleBase_ViewerPrsPtr& thePrs);
+
+ /// Set sketch plane from selected object
+ /// \param theFeature a feature of sketch
+ /// \param thePrs a presentation
+ bool fillSketchPlaneBySelection(const ModuleBase_ViewerPrsPtr& thePrs);
+
+ /// Redefinition of a virtual function
+ virtual void showEvent(QShowEvent* theEvent);
+
+ /// Redefinition of a virtual function
+ virtual void hideEvent(QHideEvent* theEvent);
+
+ /// Redefinition of a virtual function
+ virtual bool eventFilter(QObject* theObj, QEvent* theEvent);
+
+private slots:
+ /// A slot called on set sketch plane view
+ void onSetPlaneView();
+
+ /// Emits signal about check box state changed with information about ConstraintVisibleState
+ /// \param theOn a flag show constraints or not
+ void onShowConstraint(bool theOn);
+
+ /// A a slot called on "Change sketch plane" check box toggele
+ void onChangePlane();
+
+ /// A a slot called on "Show remaining DOFs" check box toggele
+ void onShowDOF();
+
+ /// A a slot called on changing the panel visibility
+ void onShowPanel();
+
+ /// A slot which is called on "Visible" plane checkbox toggle
+ void onShowViewPlane(bool);
+
+private: