Subject.
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#include <gdcmSubject.h>
| gdcm::Subject::Subject |
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| gdcm::Subject::~Subject |
( |
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| unsigned long gdcm::Subject::AddObserver |
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const Event & |
event, |
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Command * |
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) |
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Allow people to add/remove/invoke observers (callbacks) to any GDCM object. This is an implementation of the subject/observer design pattern. An observer is added by specifying an event to respond to and an gdcm::Command to execute. It returns an unsigned long tag which can be used later to remove the event or retrieve the command. The memory for the Command becomes the responsibility of this object, so don't pass the same instance of a command to two different objects
| unsigned long gdcm::Subject::AddObserver |
( |
const Event & |
event, |
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Command * |
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) |
| const |
| Command* gdcm::Subject::GetCommand |
( |
unsigned long |
tag | ) |
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Get the command associated with the given tag. NOTE: This returns a pointer to a Command, but it is safe to asign this to a Command::Pointer. Since Command inherits from LightObject, at this point in the code, only a pointer or a reference to the Command can be used.
| bool gdcm::Subject::HasObserver |
( |
const Event & |
event | ) |
const |
Return true if an observer is registered for this event.
| void gdcm::Subject::InvokeEvent |
( |
const Event & |
| ) |
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Call Execute on all the Commands observing this event id.
| void gdcm::Subject::InvokeEvent |
( |
const Event & |
| ) |
const |
Call Execute on all the Commands observing this event id. The actions triggered by this call doesn't modify this object.
| void gdcm::Subject::RemoveAllObservers |
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| ) |
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| void gdcm::Subject::RemoveObserver |
( |
unsigned long |
tag | ) |
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Remove the observer with this tag value.
The documentation for this class was generated from the following file:
Public Member Functions inherited from gdcm::Object