/* 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/. */

#ifndef MOZILLA_LAYERS_COMPOSITABLETRANSACTIONPARENT_H
#define MOZILLA_LAYERS_COMPOSITABLETRANSACTIONPARENT_H

#include "mozilla/NotNull.h"
#include "mozilla/layers/ISurfaceAllocator.h"  // for ISurfaceAllocator
#include "mozilla/layers/LayersMessages.h"     // for EditReply, etc
#include "mozilla/layers/TextureClient.h"
#include "CompositableHost.h"

namespace mozilla {
namespace layers {

// Since PCompositble has two potential manager protocols, we can't just call
// the Manager() method usually generated when there's one manager protocol,
// so both manager protocols implement this and we keep a reference to them
// through this interface.
class CompositableParentManager : public HostIPCAllocator {
 public:
  CompositableParentManager() = default;

  void DestroyActor(const OpDestroy& aOp);

  void DestroyActors(const nsTArray<OpDestroy>& aToDestroy);

  void UpdateFwdTransactionId(uint64_t aTransactionId) {
    MOZ_ASSERT(mFwdTransactionId < aTransactionId);
    mFwdTransactionId = aTransactionId;
  }

  uint64_t GetFwdTransactionId() { return mFwdTransactionId; }

  RefPtr<CompositableHost> AddCompositable(const CompositableHandle& aHandle,
                                           const TextureInfo& aInfo);
  RefPtr<CompositableHost> FindCompositable(const CompositableHandle& aHandle);

 protected:
  /**
   * Handle the IPDL messages that affect PCompositable actors.
   */
  bool ReceiveCompositableUpdate(const CompositableOperation& aEdit);
  bool ReceiveCompositableUpdate(const CompositableOperationDetail& aDetail,
                                 NotNull<CompositableHost*> aCompositable,
                                 const CompositableHandle& aHandle);

  void ReleaseCompositable(const CompositableHandle& aHandle);

  uint64_t mFwdTransactionId = 0;

  /**
   * Mapping form IDs to CompositableHosts.
   */
  std::map<uint64_t, RefPtr<CompositableHost>> mCompositables;
};

}  // namespace layers
}  // namespace mozilla

#endif