widget/PluginWidgetProxy.cpp
author Chris H-C <chutten@mozilla.com>
Mon, 04 Jul 2016 11:16:05 -0400
changeset 312997 df28918fe2361f0b54ca9ce4773a29c4c0675d06
parent 310548 08d20351a75460e22d4c1957d2c0e076b291700c
child 316850 baabb29c04ef0d00cf76a2fc19ddf74e0e474252
permissions -rw-r--r--
bug 1218576 - Support remote accumulation via JS histograms. r=gfritzsche The JS histograms, too, need to dispatch their accumulations from child to parent. JSHistograms_Add now only supports histograms that are in gHistogramsMap or that were created in the parent process. After bug 1288745, maybe we'll be able to change this to be less convoluted. MozReview-Commit-ID: 3qTH89YKbGP

/* 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 "PluginWidgetProxy.h"
#include "mozilla/dom/TabChild.h"
#include "mozilla/plugins/PluginWidgetChild.h"
#include "nsDebug.h"

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

/* static */
already_AddRefed<nsIWidget>
nsIWidget::CreatePluginProxyWidget(TabChild* aTabChild,
                                   mozilla::plugins::PluginWidgetChild* aActor)
{
  nsCOMPtr<nsIWidget> widget =
    new mozilla::widget::PluginWidgetProxy(aTabChild, aActor);
  return widget.forget();
}

namespace mozilla {
namespace widget {

NS_IMPL_ISUPPORTS_INHERITED(PluginWidgetProxy, PuppetWidget, nsIWidget)

#define ENSURE_CHANNEL do {                                   \
  if (!mActor) {                                              \
    NS_WARNING("called on an invalid channel.");              \
    return NS_ERROR_FAILURE;                                  \
  }                                                           \
} while (0)

PluginWidgetProxy::PluginWidgetProxy(dom::TabChild* aTabChild,
                                     mozilla::plugins::PluginWidgetChild* aActor) :
  PuppetWidget(aTabChild),
  mActor(aActor),
  mCachedPluginPort(0)
{
  // See ChannelDestroyed() in the header
  mActor->SetWidget(this);
}

PluginWidgetProxy::~PluginWidgetProxy()
{
  PWLOG("PluginWidgetProxy::~PluginWidgetProxy()\n");
}

nsresult
PluginWidgetProxy::Create(nsIWidget* aParent,
                          nsNativeWidget aNativeParent,
                          const LayoutDeviceIntRect& aRect,
                          nsWidgetInitData* aInitData)
{
  ENSURE_CHANNEL;
  PWLOG("PluginWidgetProxy::Create()\n");

  nsresult rv = NS_ERROR_UNEXPECTED;
  mActor->SendCreate(&rv);
  if (NS_FAILED(rv)) {
    NS_WARNING("failed to create chrome widget, plugins won't paint.");
    return rv;
  }

  BaseCreate(aParent, aInitData);
  mParent = aParent;

  mBounds = aRect;
  mEnabled = true;
  mVisible = true;

  return NS_OK;
}

NS_IMETHODIMP
PluginWidgetProxy::SetParent(nsIWidget* aNewParent)
{
  nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
  nsIWidget* parent = GetParent();
  if (parent) {
    parent->RemoveChild(this);
  }
  if (aNewParent) {
    aNewParent->AddChild(this);
  }
  mParent = aNewParent;
  return NS_OK;
}

nsIWidget*
PluginWidgetProxy::GetParent(void)
{
  return mParent.get();
}

void
PluginWidgetProxy::Destroy()
{
  PWLOG("PluginWidgetProxy::Destroy()\n");

  if (mActor) {
    // Communicate that the layout widget has been torn down before the sub
    // protocol.
    mActor->ProxyShutdown();
    mActor = nullptr;
  }

  PuppetWidget::Destroy();
}

void
PluginWidgetProxy::GetWindowClipRegion(nsTArray<LayoutDeviceIntRect>* aRects)
{
  if (mClipRects && mClipRectCount) {
    aRects->AppendElements(mClipRects.get(), mClipRectCount);
  }
}

void*
PluginWidgetProxy::GetNativeData(uint32_t aDataType)
{
  if (!mActor) {
    return nullptr;
  }
  auto tab = static_cast<mozilla::dom::TabChild*>(mActor->Manager());
  if (tab && tab->IsDestroyed()) {
    return nullptr;
  }
  switch (aDataType) {
    case NS_NATIVE_PLUGIN_PORT:
    case NS_NATIVE_WINDOW:
    case NS_NATIVE_SHAREABLE_WINDOW:
      break;
    default:
      NS_WARNING("PluginWidgetProxy::GetNativeData received request for unsupported data type.");
      return nullptr;
  }
  // The parent side window handle or xid never changes so we can
  // cache this for our lifetime.
  if (mCachedPluginPort) {
    return (void*)mCachedPluginPort;
  }
  mActor->SendGetNativePluginPort(&mCachedPluginPort);
  PWLOG("PluginWidgetProxy::GetNativeData %p\n", (void*)mCachedPluginPort);
  return (void*)mCachedPluginPort;
}

#if defined(XP_WIN)
void
PluginWidgetProxy::SetNativeData(uint32_t aDataType, uintptr_t aVal)
{
  if (!mActor) {
    return;
  }

  auto tab = static_cast<mozilla::dom::TabChild*>(mActor->Manager());
  if (tab && tab->IsDestroyed()) {
    return;
  }

  switch (aDataType) {
    case NS_NATIVE_CHILD_WINDOW:
      mActor->SendSetNativeChildWindow(aVal);
      break;
    default:
      NS_ERROR("SetNativeData called with unsupported data type.");
  }
}
#endif

NS_IMETHODIMP
PluginWidgetProxy::SetFocus(bool aRaise)
{
  ENSURE_CHANNEL;
  PWLOG("PluginWidgetProxy::SetFocus(%d)\n", aRaise);
  mActor->SendSetFocus(aRaise);
  return NS_OK;
}

} // namespace widget
} // namespace mozilla