DataObserver Class Reference

Abstract base class of data observer. More...

#include <data_observer.hh>

Inherited by Argand, DataViewerPanelBase, and ParentDataObserver.

Public Member Functions

 DataObserver (const ImageHandle &d)
 DataObserver (const DataObserver &o)
DataObserveroperator= (const DataObserver &o)
virtual ~DataObserver ()
virtual void ObserverUpdate ()
virtual void ObserverUpdate (const Extent &)
virtual void ObserverUpdate (const Point &)
virtual void ObserverRelease ()=0
void ObserverInvalidate ()
virtual const ImageHandleGetObservedData () const
bool IsDataValid () const

Protected Member Functions

void SetObservedData (const ImageHandle &d)
bool is_valid () const

Detailed Description

Abstract base class of data observer.

Definition at line 59 of file data_observer.hh.


Constructor & Destructor Documentation

DataObserver ( const ImageHandle d  ) 

constructor

requires reference to data, then attaches itself to data

DataObserver ( const DataObserver o  ) 
virtual ~DataObserver (  )  [virtual]

Member Function Documentation

virtual const ImageHandle& GetObservedData (  )  const [virtual]

Returns data that is observed.

bool is_valid (  )  const [protected]
bool IsDataValid (  )  const [inline]

Definition at line 96 of file data_observer.hh.

void ObserverInvalidate (  ) 

Called after ObserverRelease.

virtual void ObserverRelease (  )  [pure virtual]

Called if data is released from memory.

Implemented in Argand, DataViewerPanelBase, and ParentDataObserver.

virtual void ObserverUpdate ( const Point  )  [virtual]

special update, calls ObserverUpdate() by default

Reimplemented in Argand, and DataViewerPanelBase.

virtual void ObserverUpdate ( const Extent  )  [virtual]

special update, calls ObserverUpdate() by default

Reimplemented in Argand, and DataViewerPanelBase.

virtual void ObserverUpdate (  )  [virtual]

called upon data change, noop by default

Reimplemented in Argand, DataViewerPanelBase, and FFTPanel.

DataObserver& operator= ( const DataObserver o  ) 
void SetObservedData ( const ImageHandle d  )  [protected]

Set new data to observe.

Automatically unregister previously observed data


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