/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* 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 "mozilla/layers/APZCTreeManagerParent.h"

#include "apz/src/APZCTreeManager.h"

#include "mozilla/layers/APZThreadUtils.h"

#include "mozilla/layers/APZUpdater.h"

namespace mozilla {

namespace layers {

APZCTreeManagerParent::APZCTreeManagerParent(LayersId aLayersId,

                                             RefPtr<APZCTreeManager> aAPZCTreeManager,

                                             RefPtr<APZUpdater> aAPZUpdater)

  : mLayersId(aLayersId)

  , mTreeManager(std::move(aAPZCTreeManager))

  , mUpdater(std::move(aAPZUpdater))

{

  MOZ_ASSERT(mTreeManager != nullptr);

  MOZ_ASSERT(mUpdater != nullptr);

  MOZ_ASSERT(mUpdater->HasTreeManager(mTreeManager));

}

APZCTreeManagerParent::~APZCTreeManagerParent()

{

}

void

APZCTreeManagerParent::ChildAdopted(RefPtr<APZCTreeManager> aAPZCTreeManager,

                                    RefPtr<APZUpdater> aAPZUpdater)

{

  MOZ_ASSERT(aAPZCTreeManager != nullptr);

  MOZ_ASSERT(aAPZUpdater != nullptr);

  MOZ_ASSERT(aAPZUpdater->HasTreeManager(aAPZCTreeManager));

  mTreeManager = std::move(aAPZCTreeManager);

  mUpdater = std::move(aAPZUpdater);

}

mozilla::ipc::IPCResult

APZCTreeManagerParent::RecvSetKeyboardMap(const KeyboardMap& aKeyboardMap)

{

  mUpdater->RunOnControllerThread(mLayersId, NewRunnableMethod<KeyboardMap>(

    "layers::IAPZCTreeManager::SetKeyboardMap",

    mTreeManager,

    &IAPZCTreeManager::SetKeyboardMap,

    aKeyboardMap));

  return IPC_OK();

}

mozilla::ipc::IPCResult

APZCTreeManagerParent::RecvZoomToRect(

    const ScrollableLayerGuid& aGuid,

    const CSSRect& aRect,

    const uint32_t& aFlags)

{

  if (aGuid.mLayersId != mLayersId) {

    // Guard against bad data from hijacked child processes

    NS_ERROR("Unexpected layers id in RecvZoomToRect; dropping message...");

    return IPC_FAIL_NO_REASON(this);

  }

  mUpdater->RunOnControllerThread(

    mLayersId,

    NewRunnableMethod<ScrollableLayerGuid, CSSRect, uint32_t>(

      "layers::IAPZCTreeManager::ZoomToRect",

      mTreeManager,

      &IAPZCTreeManager::ZoomToRect,

      aGuid, aRect, aFlags));

  return IPC_OK();

}

mozilla::ipc::IPCResult

APZCTreeManagerParent::RecvContentReceivedInputBlock(

    const uint64_t& aInputBlockId,

    const bool& aPreventDefault)

{

  mUpdater->RunOnControllerThread(mLayersId, NewRunnableMethod<uint64_t, bool>(

    "layers::IAPZCTreeManager::ContentReceivedInputBlock",

    mTreeManager,

    &IAPZCTreeManager::ContentReceivedInputBlock,

    aInputBlockId,

    aPreventDefault));

  return IPC_OK();

}

mozilla::ipc::IPCResult

APZCTreeManagerParent::RecvSetTargetAPZC(

    const uint64_t& aInputBlockId,

    nsTArray<ScrollableLayerGuid>&& aTargets)

{

  for (size_t i = 0; i < aTargets.Length(); i++) {

    if (aTargets[i].mLayersId != mLayersId) {

      // Guard against bad data from hijacked child processes

      NS_ERROR("Unexpected layers id in RecvSetTargetAPZC; dropping message...");

      return IPC_FAIL_NO_REASON(this);

    }

  }

  mUpdater->RunOnControllerThread(

    mLayersId,

    NewRunnableMethod<uint64_t,

                      StoreCopyPassByRRef<nsTArray<ScrollableLayerGuid>>>(

      "layers::IAPZCTreeManager::SetTargetAPZC",

      mTreeManager,

      &IAPZCTreeManager::SetTargetAPZC,

      aInputBlockId,

      aTargets));

  return IPC_OK();

}

mozilla::ipc::IPCResult

APZCTreeManagerParent::RecvUpdateZoomConstraints(

    const ScrollableLayerGuid& aGuid,

    const MaybeZoomConstraints& aConstraints)

{

  if (aGuid.mLayersId != mLayersId) {

    // Guard against bad data from hijacked child processes

    NS_ERROR("Unexpected layers id in RecvUpdateZoomConstraints; dropping message...");

    return IPC_FAIL_NO_REASON(this);

  }

  mTreeManager->UpdateZoomConstraints(aGuid, aConstraints);

  return IPC_OK();

}

mozilla::ipc::IPCResult

APZCTreeManagerParent::RecvSetDPI(const float& aDpiValue)

{

  mUpdater->RunOnControllerThread(mLayersId, NewRunnableMethod<float>(

    "layers::IAPZCTreeManager::SetDPI",

    mTreeManager,

    &IAPZCTreeManager::SetDPI,

    aDpiValue));

  return IPC_OK();

}

mozilla::ipc::IPCResult

APZCTreeManagerParent::RecvSetAllowedTouchBehavior(

    const uint64_t& aInputBlockId,

    nsTArray<TouchBehaviorFlags>&& aValues)

{

  mUpdater->RunOnControllerThread(

    mLayersId,

    NewRunnableMethod<uint64_t,

                      StoreCopyPassByRRef<nsTArray<TouchBehaviorFlags>>>(

      "layers::IAPZCTreeManager::SetAllowedTouchBehavior",

      mTreeManager,

      &IAPZCTreeManager::SetAllowedTouchBehavior,

      aInputBlockId,

      std::move(aValues)));

  return IPC_OK();

}

mozilla::ipc::IPCResult

APZCTreeManagerParent::RecvStartScrollbarDrag(

    const ScrollableLayerGuid& aGuid,

    const AsyncDragMetrics& aDragMetrics)

{

  if (aGuid.mLayersId != mLayersId) {

    // Guard against bad data from hijacked child processes

    NS_ERROR("Unexpected layers id in RecvStartScrollbarDrag; dropping message...");

    return IPC_FAIL_NO_REASON(this);

  }

  mUpdater->RunOnControllerThread(

    mLayersId,

    NewRunnableMethod<ScrollableLayerGuid, AsyncDragMetrics>(

      "layers::IAPZCTreeManager::StartScrollbarDrag",

      mTreeManager,

      &IAPZCTreeManager::StartScrollbarDrag,

      aGuid,

      aDragMetrics));

  return IPC_OK();

}

mozilla::ipc::IPCResult

APZCTreeManagerParent::RecvStartAutoscroll(

    const ScrollableLayerGuid& aGuid,

    const ScreenPoint& aAnchorLocation)

{

  // Unlike RecvStartScrollbarDrag(), this message comes from the parent

  // process (via nsBaseWidget::mAPZC) rather than from the child process

  // (via TabChild::mApzcTreeManager), so there is no need to check the

  // layers id against mLayersId (and in any case, it wouldn't match, because

  // mLayersId stores the parent process's layers id, while nsBaseWidget is

  // sending the child process's layers id).

  mUpdater->RunOnControllerThread(

      mLayersId,

      NewRunnableMethod<ScrollableLayerGuid, ScreenPoint>(

        "layers::IAPZCTreeManager::StartAutoscroll",

        mTreeManager,

        &IAPZCTreeManager::StartAutoscroll,

        aGuid, aAnchorLocation));

  return IPC_OK();

}

mozilla::ipc::IPCResult

APZCTreeManagerParent::RecvStopAutoscroll(const ScrollableLayerGuid& aGuid)

{

  // See RecvStartAutoscroll() for why we don't check the layers id.

  mUpdater->RunOnControllerThread(

      mLayersId,

      NewRunnableMethod<ScrollableLayerGuid>(

        "layers::IAPZCTreeManager::StopAutoscroll",

        mTreeManager,

        &IAPZCTreeManager::StopAutoscroll,

        aGuid));

  return IPC_OK();

}

mozilla::ipc::IPCResult

APZCTreeManagerParent::RecvSetLongTapEnabled(const bool& aLongTapEnabled)

{

  mUpdater->RunOnControllerThread(

      mLayersId,

      NewRunnableMethod<bool>(

        "layers::IAPZCTreeManager::SetLongTapEnabled",

        mTreeManager,

        &IAPZCTreeManager::SetLongTapEnabled,

        aLongTapEnabled));

  return IPC_OK();

}

} // namespace layers

} // namespace mozilla