michael@0: /* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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: #include "nsISerializable.idl"
michael@0: 
michael@0: interface nsIEnumerator;
michael@0: 
michael@0: [scriptable, uuid(83b6019c-cbc4-11d2-8cca-0060b0fc14a3)]
michael@0: interface nsICollection : nsISerializable
michael@0: {
michael@0: 
michael@0:   uint32_t Count();
michael@0:   nsISupports GetElementAt(in uint32_t index);
michael@0:   void QueryElementAt(in uint32_t index, in nsIIDRef uuid, 
michael@0:                       [iid_is(uuid),retval] out nsQIResult result);
michael@0:   void SetElementAt(in uint32_t index, in nsISupports item);
michael@0:   void AppendElement(in nsISupports item);
michael@0:   void RemoveElement(in nsISupports item);
michael@0: 
michael@0:   nsIEnumerator Enumerate();
michael@0: 
michael@0:   void Clear();
michael@0: 
michael@0: };
michael@0: 
michael@0: %{C++
michael@0: 
michael@0: #ifndef nsCOMPtr_h__
michael@0: #include "nsCOMPtr.h"
michael@0: #endif
michael@0: 
michael@0: class nsQueryElementAt : public nsCOMPtr_helper
michael@0:   {
michael@0:     public:
michael@0:       nsQueryElementAt( nsICollection* aCollection, uint32_t aIndex, nsresult* aErrorPtr )
michael@0:           : mCollection(aCollection),
michael@0:             mIndex(aIndex),
michael@0:             mErrorPtr(aErrorPtr)
michael@0:         {
michael@0:           // nothing else to do here
michael@0:         }
michael@0: 
michael@0:       virtual nsresult NS_FASTCALL operator()( const nsIID& aIID, void** ) const;
michael@0: 
michael@0:     private:
michael@0:       nsICollection*  mCollection;
michael@0:       uint32_t        mIndex;
michael@0:       nsresult*       mErrorPtr;
michael@0:   };
michael@0: 
michael@0: inline
michael@0: const nsQueryElementAt
michael@0: do_QueryElementAt( nsICollection* aCollection, uint32_t aIndex, nsresult* aErrorPtr = 0 )
michael@0:   {
michael@0:     return nsQueryElementAt(aCollection, aIndex, aErrorPtr);
michael@0:   }
michael@0: 
michael@0: %}