mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-30 21:55:31 +00:00
83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
// IWYU pragma: private, include "nsISupports.h"
|
|
|
|
#ifndef nsISupportsBase_h__
|
|
#define nsISupportsBase_h__
|
|
|
|
#ifndef nscore_h___
|
|
#include "nscore.h"
|
|
#endif
|
|
|
|
#ifndef nsID_h__
|
|
#include "nsID.h"
|
|
#endif
|
|
|
|
|
|
/*@{*/
|
|
/**
|
|
* IID for the nsISupports interface
|
|
* {00000000-0000-0000-c000-000000000046}
|
|
*
|
|
* To maintain binary compatibility with COM's IUnknown, we define the IID
|
|
* of nsISupports to be the same as that of COM's IUnknown.
|
|
*/
|
|
#define NS_ISUPPORTS_IID \
|
|
{ 0x00000000, 0x0000, 0x0000, \
|
|
{0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46} }
|
|
|
|
/**
|
|
* Basic component object model interface. Objects which implement
|
|
* this interface support runtime interface discovery (QueryInterface)
|
|
* and a reference counted memory model (AddRef/Release). This is
|
|
* modelled after the win32 IUnknown API.
|
|
*/
|
|
class NS_NO_VTABLE nsISupports {
|
|
public:
|
|
|
|
NS_DECLARE_STATIC_IID_ACCESSOR(NS_ISUPPORTS_IID)
|
|
|
|
/**
|
|
* @name Methods
|
|
*/
|
|
|
|
//@{
|
|
/**
|
|
* A run time mechanism for interface discovery.
|
|
* @param aIID [in] A requested interface IID
|
|
* @param aInstancePtr [out] A pointer to an interface pointer to
|
|
* receive the result.
|
|
* @return <b>NS_OK</b> if the interface is supported by the associated
|
|
* instance, <b>NS_NOINTERFACE</b> if it is not.
|
|
*
|
|
* aInstancePtr must not be null.
|
|
*/
|
|
NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) = 0;
|
|
/**
|
|
* Increases the reference count for this interface.
|
|
* The associated instance will not be deleted unless
|
|
* the reference count is returned to zero.
|
|
*
|
|
* @return The resulting reference count.
|
|
*/
|
|
NS_IMETHOD_(nsrefcnt) AddRef(void) = 0;
|
|
|
|
/**
|
|
* Decreases the reference count for this interface.
|
|
* Generally, if the reference count returns to zero,
|
|
* the associated instance is deleted.
|
|
*
|
|
* @return The resulting reference count.
|
|
*/
|
|
NS_IMETHOD_(nsrefcnt) Release(void) = 0;
|
|
|
|
//@}
|
|
};
|
|
|
|
NS_DEFINE_STATIC_IID_ACCESSOR(nsISupports, NS_ISUPPORTS_IID)
|
|
|
|
/*@}*/
|
|
|
|
#endif
|