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       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
       2             :  * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
       3             :  * This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #ifndef mozilla_storage_mozStorageAsyncStatementJSHelper_h_
       8             : #define mozilla_storage_mozStorageAsyncStatementJSHelper_h_
       9             : 
      10             : #include "nsIXPCScriptable.h"
      11             : #include "nsIXPConnect.h"
      12             : 
      13             : class AsyncStatement;
      14             : 
      15             : namespace mozilla {
      16             : namespace storage {
      17             : 
      18             : /**
      19             :  * A modified version of StatementJSHelper that only exposes the async-specific
      20             :  * 'params' helper.  We do not expose 'row' or 'step' as they do not apply to
      21             :  * us.
      22             :  */
      23           1 : class AsyncStatementJSHelper : public nsIXPCScriptable
      24             : {
      25             : public:
      26             :   NS_DECL_ISUPPORTS
      27             :   NS_DECL_NSIXPCSCRIPTABLE
      28             : 
      29             : private:
      30             :   nsresult getParams(AsyncStatement *, JSContext *, JSObject *, JS::Value *);
      31             : };
      32             : 
      33             : /**
      34             :  * Wrapper used to clean up the references JS helpers hold to the statement.
      35             :  * For cycle-avoidance reasons they do not hold reference-counted references,
      36             :  * so it is important we do this.
      37             :  */
      38             : class AsyncStatementParamsHolder final : public nsIXPConnectJSObjectHolder
      39             : {
      40             : public:
      41             :   NS_DECL_ISUPPORTS
      42             :   NS_DECL_NSIXPCONNECTJSOBJECTHOLDER
      43             : 
      44             :   explicit AsyncStatementParamsHolder(nsIXPConnectJSObjectHolder* aHolder);
      45             : 
      46             : private:
      47             :   virtual ~AsyncStatementParamsHolder();
      48             :   nsCOMPtr<nsIXPConnectJSObjectHolder> mHolder;
      49             : };
      50             : 
      51             : } // namespace storage
      52             : } // namespace mozilla
      53             : 
      54             : #endif // mozilla_storage_mozStorageAsyncStatementJSHelper_h_