michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef nsXPTCUtils_h__
michael@0: #define nsXPTCUtils_h__
michael@0: 
michael@0: #include "xptcall.h"
michael@0: 
michael@0: /**
michael@0:  * A helper class that initializes an xptcall helper at construction
michael@0:  * and releases it at destruction.
michael@0:  */
michael@0: class nsAutoXPTCStub : protected nsIXPTCProxy
michael@0: {
michael@0: public:
michael@0:   nsISomeInterface* mXPTCStub;
michael@0: 
michael@0: protected:
michael@0:   nsAutoXPTCStub() : mXPTCStub(nullptr) { }
michael@0: 
michael@0:   nsresult
michael@0:   InitStub(const nsIID& aIID)
michael@0:   {
michael@0:     return NS_GetXPTCallStub(aIID, this, &mXPTCStub);
michael@0:   }
michael@0: 
michael@0:   ~nsAutoXPTCStub()
michael@0:   {
michael@0:     if (mXPTCStub)
michael@0:       NS_DestroyXPTCallStub(mXPTCStub);
michael@0:   }
michael@0: };
michael@0: 
michael@0: #endif // nsXPTCUtils_h__