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/* -*- 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 "ShadowLayerParent.h"
#include "Layers.h" // for Layer, ContainerLayer
#include "nsDebug.h" // for NS_RUNTIMEABORT
#include "nsISupportsImpl.h" // for Layer::AddRef, etc
#include "mozilla/layers/PaintedLayerComposite.h"
#include "mozilla/layers/CanvasLayerComposite.h"
#include "mozilla/layers/ColorLayerComposite.h"
#include "mozilla/layers/ImageLayerComposite.h"
#include "mozilla/layers/ContainerLayerComposite.h"
namespace mozilla {
namespace layers {
ShadowLayerParent::ShadowLayerParent() : mLayer(nullptr)
{
}
ShadowLayerParent::~ShadowLayerParent()
{
Disconnect();
}
void
ShadowLayerParent::Disconnect()
{
if (mLayer) {
mLayer->Disconnect();
mLayer = nullptr;
}
}
void
ShadowLayerParent::Bind(Layer* layer)
{
if (mLayer != layer) {
Disconnect();
mLayer = layer;
}
}
void
ShadowLayerParent::Destroy()
{
// It's possible for Destroy() to come in just after this has been
// created, but just before the transaction in which Bind() would
// have been called. In that case, we'll ignore shadow-layers
// transactions from there on and never get a layer here.
Disconnect();
}
ContainerLayerComposite*
ShadowLayerParent::AsContainerLayerComposite() const
{
return mLayer && mLayer->GetType() == Layer::TYPE_CONTAINER
? static_cast<ContainerLayerComposite*>(mLayer.get())
: nullptr;
}
CanvasLayerComposite*
ShadowLayerParent::AsCanvasLayerComposite() const
{
return mLayer && mLayer->GetType() == Layer::TYPE_CANVAS
? static_cast<CanvasLayerComposite*>(mLayer.get())
: nullptr;
}
ColorLayerComposite*
ShadowLayerParent::AsColorLayerComposite() const
{
return mLayer && mLayer->GetType() == Layer::TYPE_COLOR
? static_cast<ColorLayerComposite*>(mLayer.get())
: nullptr;
}
ImageLayerComposite*
ShadowLayerParent::AsImageLayerComposite() const
{
return mLayer && mLayer->GetType() == Layer::TYPE_IMAGE
? static_cast<ImageLayerComposite*>(mLayer.get())
: nullptr;
}
RefLayerComposite*
ShadowLayerParent::AsRefLayerComposite() const
{
return mLayer && mLayer->GetType() == Layer::TYPE_REF
? static_cast<RefLayerComposite*>(mLayer.get())
: nullptr;
}
PaintedLayerComposite*
ShadowLayerParent::AsPaintedLayerComposite() const
{
return mLayer && mLayer->GetType() == Layer::TYPE_PAINTED
? static_cast<PaintedLayerComposite*>(mLayer.get())
: nullptr;
}
void
ShadowLayerParent::ActorDestroy(ActorDestroyReason why)
{
switch (why) {
case AncestorDeletion:
NS_RUNTIMEABORT("shadow layer deleted out of order!");
return; // unreached
case Deletion:
// See comment near Destroy() above.
Disconnect();
break;
case AbnormalShutdown:
Disconnect();
break;
case NormalShutdown:
// let IPDL-generated code automatically clean up Shmems and so
// forth; our channel is disconnected anyway
break;
case FailedConstructor:
NS_RUNTIMEABORT("FailedConstructor isn't possible in PLayerTransaction");
return; // unreached
}
mLayer = nullptr;
}
} // namespace layers
} // namespace mozilla
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