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WrappingCommand< T > Class Template Reference

A wrapper for a Command function. More...

#include <WrappingCommand.h>

Inheritance diagram for WrappingCommand< T >:
Command

Public Types

typedef SUMOTime(T::* Operation )(SUMOTime)
 Type of the function to execute. More...
 

Public Member Functions

void deschedule ()
 Marks this Command as being descheduled. More...
 
 WrappingCommand (T *receiver, Operation operation)
 Constructor. More...
 
 ~WrappingCommand ()
 Destructor. More...
 
Derived from Command
SUMOTime execute (SUMOTime currentTime)
 Executes the command. More...
 

Private Attributes

bool myAmDescheduledByParent
 Whether this command was descheduled (is invalid) and shall not be executed. More...
 
Operation myOperation
 The object's operation to perform. More...
 
T * myReceiver
 The object the action is directed to. More...
 

Detailed Description

template<class T>
class WrappingCommand< T >

A wrapper for a Command function.

In order to ease life, this class may encapsulate a method of a class which in order to be used as a Command. This allows to use a member methods of a class to be called as Commands are, avoiding that the instance itself is destroyed by the EventHandler.

Because in some cases, the Command may live longer than the instance class, a boolean value indicates that the Command is "descheduled". It should be set via "deschedule" as soon as the class instance of which a method is encapsulated is destroyed and forces that the command (calling of this instace's method) is not executed.

See also
Design Patterns, Gamma et al.
Command
MSEventControl

Definition at line 60 of file WrappingCommand.h.

Member Typedef Documentation

template<class T>
typedef SUMOTime(T::* WrappingCommand< T >::Operation)(SUMOTime)

Type of the function to execute.

Definition at line 63 of file WrappingCommand.h.

Constructor & Destructor Documentation

template<class T>
WrappingCommand< T >::WrappingCommand ( T *  receiver,
Operation  operation 
)
inline

Constructor.

Parameters
[in]receiverPointer to object of type T that will receive a call to one of it's methods.
[in]operationThe objects' method that will be called on execute()

Definition at line 73 of file WrappingCommand.h.

template<class T>
WrappingCommand< T >::~WrappingCommand ( )
inline

Destructor.

Definition at line 79 of file WrappingCommand.h.

Member Function Documentation

template<class T>
void WrappingCommand< T >::deschedule ( )
inline

Marks this Command as being descheduled.

A simple boolean marker ("myAmDescheduledByParent") is set which prevents this command from being executed.

Definition at line 87 of file WrappingCommand.h.

Referenced by MSDevice_Routing::notifyEnter(), and MSDevice_Routing::~MSDevice_Routing().

template<class T>
SUMOTime WrappingCommand< T >::execute ( SUMOTime  currentTime)
inlinevirtual

Executes the command.

If the command is not descheduled, the stored method of the stored instance is called.

Parameters
[in]currentTimeThe current simulation time
Returns
The time after which the command shall be executed again, 0 if this command shall be descheduled.
Exceptions
ProcessErrorDerived actions may throw this exception

Implements Command.

Definition at line 105 of file WrappingCommand.h.

Field Documentation

template<class T>
bool WrappingCommand< T >::myAmDescheduledByParent
private

Whether this command was descheduled (is invalid) and shall not be executed.

Definition at line 124 of file WrappingCommand.h.

Referenced by WrappingCommand< MSDevice_Routing >::deschedule(), and WrappingCommand< MSDevice_Routing >::execute().

template<class T>
Operation WrappingCommand< T >::myOperation
private

The object's operation to perform.

Definition at line 121 of file WrappingCommand.h.

Referenced by WrappingCommand< MSDevice_Routing >::execute().

template<class T>
T* WrappingCommand< T >::myReceiver
private

The object the action is directed to.

Definition at line 118 of file WrappingCommand.h.

Referenced by WrappingCommand< MSDevice_Routing >::execute().


The documentation for this class was generated from the following file: