layout/ipc/RenderFrameChild.cpp
author Chris Jones <jones.chris.g@gmail.com>
Tue, 17 Jul 2012 16:59:45 -0700
changeset 105073 1df6cd42330dc2520947b5e4f5c92b76bf82fe80
parent 98686 b2f81c86f2dd01137d5cfa079ab5a0ff3009ef73
child 105076 4a58089672882ca7f22e9866d2becf90afced9d5
permissions -rw-r--r--
Bug 745148, part 6: Allow layer trees to be given IDs so that the referent can be used in another context. r=ajuma sr=roc

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: sw=2 ts=8 et :
 */
/* 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 "RenderFrameChild.h"
#include "mozilla/layers/ShadowLayersChild.h"

using mozilla::layers::PLayersChild;
using mozilla::layers::ShadowLayersChild;

namespace mozilla {
namespace layout {

void
RenderFrameChild::Destroy()
{
  size_t numChildren = ManagedPLayersChild().Length();
  NS_ABORT_IF_FALSE(0 == numChildren || 1 == numChildren,
                    "render frame must only have 0 or 1 layer forwarder");

  if (numChildren) {
    ShadowLayersChild* layers =
      static_cast<ShadowLayersChild*>(ManagedPLayersChild()[0]);
    layers->Destroy();
    // |layers| was just deleted, take care
  }

  Send__delete__(this);
  // WARNING: |this| is dead, hands off
}

PLayersChild*
RenderFrameChild::AllocPLayers(LayerManager::LayersBackend* aBackendType,
                               int* aMaxTextureSize, uint64_t* aId)
{
  return new ShadowLayersChild();
}

bool
RenderFrameChild::DeallocPLayers(PLayersChild* aLayers)
{
  delete aLayers;
  return true;
}

}  // namespace layout
}  // namespace mozilla