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# iEventHandlerRegistry Struct Reference
[Event handling]

This interface represents a general event handler registry/resolver. More...

`#include <iutil/eventhandlers.h>`

Inheritance diagram for iEventHandlerRegistry:

[legend]
List of all members.

## Public Member Functions

virtual csHandlerID const | GetGeneric (csHandlerID id)=0
| Returns the csHandleID for the generic name for instance name id.
virtual csHandlerID | GetGenericID (const char *)=0
| Get a csHandlerID based upon some string.
virtual iEventHandler * | GetHandler (csHandlerID id)=0
| Returns the handler registered for a csHandlerID (will be NULL if csHandlerID is a generic name, i.e., if (!csEventHandlerRegistry->IsInstance(id)).
virtual csHandlerID | GetID (const char *)=0
| Get the csHandlerID for an arbitrary handler name.
virtual csHandlerID | GetID (iEventHandler *)=0
| Get the csHandlerID for a specified event handler, which provides its own name via the iEventHandler::GetInstanceName() method.
virtual const char * | GetString (csHandlerID id)=0
| Returns the string name for a csHandlerID.
virtual bool const | IsInstance (csHandlerID id)=0
| returns true if id is a handler instance (i.e., not a generic name).
virtual bool const | IsInstanceOf (csHandlerID instanceid, csHandlerID genericid)=0
| returns true if instanceid is a handler instance, genericid is a generic instance, and instanceid is an instance of genericid in particular.
virtual csHandlerID | RegisterID (iEventHandler *)=0
| Register an event handler to obtain a handler ID.
virtual void | ReleaseID (iEventHandler *)=0
| Used when an iEventHandler is destroyed to remove our reference.
virtual void | ReleaseID (csHandlerID id)=0
| Used when an iEventHandler is destroyed to remove our reference.

## Detailed Description

This interface represents a general event handler registry/resolver.

An iHandlerRegistry maintains a one-to-one mapping from strings to csHandlerIDs, and a one-to-(zero or one) mapping from csHandlerIDs to iEventHandler pointers.

Definition at line 58 of file eventhandlers.h.

## Member Function Documentation

virtual csHandlerID const iEventHandlerRegistry::GetGeneric | ( | csHandlerID | id | ) | `[pure virtual]`

Returns the csHandleID for the generic name for instance name id.

Implemented in csEventHandlerRegistry.

virtual csHandlerID iEventHandlerRegistry::GetGenericID | ( | const char * |  | ) | `[pure virtual]`

Get a csHandlerID based upon some string.

This should only ever be done to reference generic (non-instantiated) handler names or single-instance handlers.

Implemented in csEventHandlerRegistry.

virtual iEventHandler* iEventHandlerRegistry::GetHandler | ( | csHandlerID | id | ) | `[pure virtual]`

Returns the handler registered for a csHandlerID (will be NULL if csHandlerID is a generic name, i.e., if (!csEventHandlerRegistry->IsInstance(id)).

Implemented in csEventHandlerRegistry.

virtual csHandlerID iEventHandlerRegistry::GetID | ( | const char * |  | ) | `[pure virtual]`

Get the csHandlerID for an arbitrary handler name.

Does not set up any mappings, implicit names, or anything else that you need; a handler needs be registered with RegisterID() beforehand.

Implemented in csEventHandlerRegistry.

virtual csHandlerID iEventHandlerRegistry::GetID | ( | iEventHandler * |  | ) | `[pure virtual]`

Get the csHandlerID for a specified event handler, which provides its own name via the iEventHandler::GetInstanceName() method.

Does not set up any mappings, implicit names, or anything else that you need; a handler needs be registered with RegisterID() beforehand.

Implemented in csEventHandlerRegistry.

virtual const char* iEventHandlerRegistry::GetString | ( | csHandlerID | id | ) | `[pure virtual]`

Returns the string name for a csHandlerID.

Implemented in csEventHandlerRegistry.

virtual bool const iEventHandlerRegistry::IsInstance | ( | csHandlerID | id | ) | `[pure virtual]`

returns true if id is a handler instance (i.e., not a generic name).

Implemented in csEventHandlerRegistry.

virtual bool const iEventHandlerRegistry::IsInstanceOf | ( | csHandlerID | instanceid,
|  | csHandlerID | genericid |
| ) |  |  | `[pure virtual]`

returns true if instanceid is a handler instance, genericid is a generic instance, and instanceid is an instance of genericid in particular.

Implemented in csEventHandlerRegistry.

virtual csHandlerID iEventHandlerRegistry::RegisterID | ( | iEventHandler * |  | ) | `[pure virtual]`

Register an event handler to obtain a handler ID.

Remarks:
  Every call must be balanced with a call to ReleaseID() to ensure proper housekeeping. Otherwise, event handler instances may be leaking.

Implemented in csEventHandlerRegistry.

virtual void iEventHandlerRegistry::ReleaseID | ( | iEventHandler * |  | ) | `[pure virtual]`

Used when an iEventHandler is destroyed to remove our reference.

Implemented in csEventHandlerRegistry.

virtual void iEventHandlerRegistry::ReleaseID | ( | csHandlerID | id | ) | `[pure virtual]`

Used when an iEventHandler is destroyed to remove our reference.

Implemented in csEventHandlerRegistry.

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

- iutil/eventhandlers.h