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/* 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/. */

include protocol PBackgroundIDBTransaction;
include protocol PBackgroundIDBVersionChangeTransaction;
include protocol PBackgroundMutableFile;
include protocol PChildToParentStream; // FIXME: bug 792908
include protocol PFileDescriptorSet; // FIXME: bug 792908
include protocol PIPCBlobInputStream; // FIXME: bug 792908
include protocol PParentToChildStream; // FIXME: bug 792908

include PBackgroundIDBSharedTypes;

include "mozilla/dom/indexedDB/SerializationHelpers.h";

using struct mozilla::void_t
  from "ipc/IPCMessageUtils.h";

using class mozilla::dom::indexedDB::Key
  from "mozilla/dom/indexedDB/Key.h";

namespace mozilla {
namespace dom {
namespace indexedDB {

struct ContinueParams
{
  Key key;
};

struct ContinuePrimaryKeyParams
{
  Key key;
  Key primaryKey;
};

struct AdvanceParams
{
  uint32_t count;
};

union CursorRequestParams
{
  ContinueParams;
  ContinuePrimaryKeyParams;
  AdvanceParams;
};

struct ObjectStoreCursorResponse
{
  Key key;
  SerializedStructuredCloneReadInfo cloneInfo;
};

struct ObjectStoreKeyCursorResponse
{
  Key key;
};

struct IndexCursorResponse
{
  Key key;
  Key sortKey;
  Key objectKey;
  SerializedStructuredCloneReadInfo cloneInfo;
};

struct IndexKeyCursorResponse
{
  Key key;
  Key sortKey;
  Key objectKey;
};

// TODO: All cursor responses must be arrays!
union CursorResponse
{
  void_t;
  nsresult;
  ObjectStoreCursorResponse[];
  ObjectStoreKeyCursorResponse[];
  IndexCursorResponse[];
  IndexKeyCursorResponse[];
};

protocol PBackgroundIDBCursor
{
  manager PBackgroundIDBTransaction or PBackgroundIDBVersionChangeTransaction;

parent:
  async DeleteMe();

  async Continue(CursorRequestParams params, Key currentKey,
                 Key currentObjectStoreKey);

child:
  async __delete__();

  async Response(CursorResponse response);
};

} // namespace indexedDB
} // namespace dom
} // namespace mozilla