+ //! Returns true if the operation with id theId can be started
+ virtual bool canStartOperation(QString theId, bool& isCommitted) = 0;
+
+ //! Performs the operation launch
+ //! \param theOperation an operation to be launched
+ virtual void processLaunchOperation(ModuleBase_Operation* theOperation) = 0;
+
+ //! Returns started operation by the operation identifier
+ //! \param theId an operation id
+ //! \return an operation instance or NULL
+ virtual ModuleBase_Operation* findStartedOperation(const QString& theId) = 0;
+
+ //! Returns true if the operation with id theId can be stopped
+ //! \param theOperation a stopped operation
+ //! \return boolean result
+ virtual bool canStopOperation(ModuleBase_Operation* theOperation) = 0;
+
+ //! Commits if possible or aborts the given operation.
+ //! \param theOperation an aborted operation
+ /// \param isCommitted boolean value if the operation was committed otherwise it was aborted
+ virtual void stopOperation(ModuleBase_Operation* theOperation,
+ bool& isCommitted) = 0;
+
+ //! Returns AIS object by data object
+ //! \param theObject a data object
+ virtual AISObjectPtr findPresentation(const ObjectPtr& theObject) const = 0;
+
+ //! Returns data object by AIS
+ //! \param theAIS a presentation
+ virtual ObjectPtr findPresentedObject(const AISObjectPtr& theAIS) const = 0;
+
+ //! Returns true if the object is displayed
+ //! \param theObject a data object
+ virtual bool isVisible(const ObjectPtr& theObject) const = 0;
+
+ //! Returns list of currently displayed objects
+ virtual QObjectPtrList displayedObjects() const = 0;
+
+ //! Select features clearing previous selection.
+ //! If the list is empty then selection will be cleared
+ //! \param theValues a list of presentations
+ virtual void setSelected(const QList<std::shared_ptr<ModuleBase_ViewerPrs>>& theValues) = 0;
+
+ //! Shows the message in the status bar
+ //! \param theMessage a message
+ virtual void setStatusBarMessage(const QString& theMessage) = 0;
+
+ /// Update of commands status
+ virtual void updateCommandStatus() = 0;
+
+ /// Returns feature info according to given feature ID
+ /// \param theId a feature Id
+ virtual std::shared_ptr<Config_FeatureMessage> featureInfo(const QString& theId) const = 0;
+
+ /// Returns main window of the application
+ virtual QMainWindow* desktop() const = 0;
+
+ /// Returns true if SHIFT is pressed
+ /// \return boolean value
+ virtual bool hasSHIFTPressed() const = 0;
+
+ virtual void deactivateCurrentSelector() = 0;
+
+ //! Temporary enable or disable viewer update. Returns previous state of updating
+ //! \param isEnabled new state of the viewer update
+ virtual bool enableUpdateViewer(bool isEnabled) = 0;
+
+ //! The methods applys current defined selection modes to given AIS presentation.
+ //! The AIS presentation has to be already displayed. After activation viewer has to be updated
+ //! \param theAIS the object which has to be activated
+ virtual void applyCurrentSelectionModes(const AISObjectPtr& theAIS) = 0;
+
+ //! Undo last command
+ virtual void undo() = 0;
+
+ //! Set enabled state of cancel button in property panel
+ virtual void setCancelEnabled(bool toEnable) = 0;
+
+ //! Returns current state of cancel button
+ virtual bool isCancelEnabled() const = 0;
+
+ //! Show help of a current operation
+ virtual void showHelpPage(const QString& thePage) const = 0;
+