/* 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/plugins/PluginWidgetChild.h"
#include "mozilla/plugins/PluginWidgetParent.h"
#include "PluginWidgetProxy.h"
#include "mozilla/DebugOnly.h"
#include "nsDebug.h"

#if defined(XP_WIN)
#include "mozilla/plugins/PluginInstanceParent.h"
using mozilla::plugins::PluginInstanceParent;
#endif

#define PWLOG(...)
// #define PWLOG(...) printf_stderr(__VA_ARGS__)

namespace mozilla {
namespace plugins {

PluginWidgetChild::PluginWidgetChild() :
  mWidget(nullptr)
{
  MOZ_COUNT_CTOR(PluginWidgetChild);
}

PluginWidgetChild::~PluginWidgetChild()
{
  MOZ_COUNT_DTOR(PluginWidgetChild);
}

// Called by the proxy widget when it is destroyed by layout. Only gets
// called once.
void
PluginWidgetChild::ProxyShutdown()
{
  PWLOG("PluginWidgetChild::ProxyShutdown()\n");
  if (mWidget) {
    SendDestroy();
    mWidget = nullptr;
  }
}

void
PluginWidgetChild::KillWidget()
{
  PWLOG("PluginWidgetChild::KillWidget()\n");
  if (mWidget) {
    mWidget->ChannelDestroyed();
  }
  mWidget = nullptr;
}

void
PluginWidgetChild::ActorDestroy(ActorDestroyReason aWhy)
{
  PWLOG("PluginWidgetChild::ActorDestroy()\n");
  KillWidget();
}

bool
PluginWidgetChild::RecvParentShutdown(const uint16_t& aType)
{
  PWLOG("PluginWidgetChild::RecvParentShutdown()\n");
  KillWidget();
  if (aType == PluginWidgetParent::CONTENT) {
    Send__delete__(this);
  }
  return true;
}

bool
PluginWidgetChild::RecvUpdateWindow(const uintptr_t& aChildId)
{
#if defined(XP_WIN)
  NS_ASSERTION(aChildId, "Expected child hwnd value for remote plugin instance.");
  PluginInstanceParent* parentInstance =
    PluginInstanceParent::LookupPluginInstanceByID(aChildId);
  NS_ASSERTION(parentInstance, "Expected matching plugin instance");
  if (parentInstance) {
    // sync! update call to the plugin instance that forces the
    // plugin to paint its child window.
    parentInstance->CallUpdateWindow();
  }
  return true;
#else
  NS_NOTREACHED("PluginWidgetChild::RecvUpdateWindow calls unexpected on this platform.");
  return false;
#endif
}

} // namespace plugins
} // namespace mozilla