1 files changed, 237 insertions, 0 deletions
diff --git a/dom/plugins/ipc/PluginWidgetParent.cpp b/dom/plugins/ipc/PluginWidgetParent.cpp
new file mode 100644
index 000000000..3c9a95b52
--- /dev/null
+++ b/dom/plugins/ipc/PluginWidgetParent.cpp
@@ -0,0 +1,237 @@
+/* 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 "PluginWidgetParent.h"
+#include "mozilla/dom/TabParent.h"
+#include "mozilla/dom/ContentParent.h"
+#include "nsComponentManagerUtils.h"
+#include "nsWidgetsCID.h"
+
+#include "mozilla/Unused.h"
+#include "mozilla/DebugOnly.h"
+#include "nsDebug.h"
+
+#if defined(MOZ_WIDGET_GTK)
+#include "nsPluginNativeWindowGtk.h"
+#endif
+
+using namespace mozilla;
+using namespace mozilla::widget;
+
+#define PWLOG(...)
+//#define PWLOG(...) printf_stderr(__VA_ARGS__)
+
+#if defined(XP_WIN)
+namespace mozilla {
+namespace dom {
+// For nsWindow
+const wchar_t* kPluginWidgetContentParentProperty =
+  L"kPluginWidgetParentProperty";
+} }
+#endif
+
+namespace mozilla {
+namespace plugins {
+
+static NS_DEFINE_CID(kWidgetCID, NS_CHILD_CID);
+
+// This macro returns true to prevent an abort in the child process when
+// ipc message delivery fails.
+#define ENSURE_CHANNEL {                                      \
+  if (!mWidget) {                                             \
+    NS_WARNING("called on an invalid remote widget.");        \
+    return true;                                              \
+  }                                                           \
+}
+
+PluginWidgetParent::PluginWidgetParent()
+{
+  PWLOG("PluginWidgetParent::PluginWidgetParent()\n");
+  MOZ_COUNT_CTOR(PluginWidgetParent);
+}
+
+PluginWidgetParent::~PluginWidgetParent()
+{
+  PWLOG("PluginWidgetParent::~PluginWidgetParent()\n");
+  MOZ_COUNT_DTOR(PluginWidgetParent);
+  // A destroy call can actually get skipped if a widget is associated
+  // with the last out-of-process page, make sure and cleanup any left
+  // over widgets if we have them.
+  KillWidget();
+}
+
+mozilla::dom::TabParent*
+PluginWidgetParent::GetTabParent()
+{
+  return static_cast<mozilla::dom::TabParent*>(Manager());
+}
+
+void
+PluginWidgetParent::SetParent(nsIWidget* aParent)
+{
+  // This will trigger sync send messages to the plugin process window
+  // procedure and a cascade of events to that window related to focus
+  // and activation.
+  if (mWidget && aParent) {
+    mWidget->SetParent(aParent);
+  }
+}
+
+// When plugins run in chrome, nsPluginNativeWindow(Plat) implements platform
+// specific functionality that wraps plugin widgets. With e10s we currently
+// bypass this code on Window, and reuse a bit of it on Linux. Content still
+// makes use of some of the utility functions as well.
+
+bool
+PluginWidgetParent::RecvCreate(nsresult* aResult, uint64_t* aScrollCaptureId,
+                               uintptr_t* aPluginInstanceId)
+{
+  PWLOG("PluginWidgetParent::RecvCreate()\n");
+
+  *aScrollCaptureId = 0;
+  *aPluginInstanceId = 0;
+
+  mWidget = do_CreateInstance(kWidgetCID, aResult);
+  NS_ASSERTION(NS_SUCCEEDED(*aResult), "widget create failure");
+
+#if defined(MOZ_WIDGET_GTK)
+  // We need this currently just for GTK in setting up a socket widget
+  // we can send over to content -> plugin.
+  PLUG_NewPluginNativeWindow((nsPluginNativeWindow**)&mWrapper);
+  if (!mWrapper) {
+    KillWidget();
+    return false;
+  }
+  // Give a copy of this to the widget, which handles some update
+  // work for us.
+  mWidget->SetNativeData(NS_NATIVE_PLUGIN_OBJECT_PTR, (uintptr_t)mWrapper.get());
+#endif
+
+  // This returns the top level window widget
+  nsCOMPtr<nsIWidget> parentWidget = GetTabParent()->GetWidget();
+  // If this fails, bail.
+  if (!parentWidget) {
+    *aResult = NS_ERROR_NOT_AVAILABLE;
+    KillWidget();
+    return true;
+  }
+
+  nsWidgetInitData initData;
+  initData.mWindowType = eWindowType_plugin_ipc_chrome;
+  initData.mUnicode = false;
+  initData.clipChildren = true;
+  initData.clipSiblings = true;
+  *aResult = mWidget->Create(parentWidget.get(), nullptr,
+                             LayoutDeviceIntRect(0, 0, 0, 0), &initData);
+  if (NS_FAILED(*aResult)) {
+    KillWidget();
+    // This should never fail, abort.
+    return false;
+  }
+
+  mWidget->EnableDragDrop(true);
+
+#if defined(MOZ_WIDGET_GTK)
+  // For setup, initially GTK code expects 'window' to hold the parent.
+  mWrapper->window = mWidget->GetNativeData(NS_NATIVE_PLUGIN_PORT);
+  DebugOnly<nsresult> drv = mWrapper->CreateXEmbedWindow(false);
+  NS_ASSERTION(NS_SUCCEEDED(drv), "widget call failure");
+  mWrapper->SetAllocation();
+  PWLOG("Plugin XID=%p\n", (void*)mWrapper->window);
+#elif defined(XP_WIN)
+  DebugOnly<DWORD> winres =
+    ::SetPropW((HWND)mWidget->GetNativeData(NS_NATIVE_WINDOW),
+               mozilla::dom::kPluginWidgetContentParentProperty,
+               GetTabParent()->Manager()->AsContentParent());
+  NS_ASSERTION(winres, "SetPropW call failure");
+
+  *aScrollCaptureId = mWidget->CreateScrollCaptureContainer();
+  *aPluginInstanceId =
+    reinterpret_cast<uintptr_t>(mWidget->GetNativeData(NS_NATIVE_PLUGIN_ID));
+#endif
+
+  // This is a special call we make to nsBaseWidget to register this
+  // window as a remote plugin window which is expected to receive
+  // visibility updates from the compositor, which ships this data
+  // over with corresponding layer updates.
+  mWidget->RegisterPluginWindowForRemoteUpdates();
+
+  return true;
+}
+
+void
+PluginWidgetParent::KillWidget()
+{
+  PWLOG("PluginWidgetParent::KillWidget() widget=%p\n", (void*)mWidget.get());
+  if (mWidget) {
+    mWidget->UnregisterPluginWindowForRemoteUpdates();
+    mWidget->Destroy();
+#if defined(MOZ_WIDGET_GTK)
+    mWidget->SetNativeData(NS_NATIVE_PLUGIN_OBJECT_PTR, (uintptr_t)0);
+    mWrapper = nullptr;
+#elif defined(XP_WIN)
+    ::RemovePropW((HWND)mWidget->GetNativeData(NS_NATIVE_WINDOW),
+                  mozilla::dom::kPluginWidgetContentParentProperty);
+#endif
+    mWidget = nullptr;
+  }
+}
+
+void
+PluginWidgetParent::ActorDestroy(ActorDestroyReason aWhy)
+{
+  PWLOG("PluginWidgetParent::ActorDestroy(%d)\n", aWhy);
+  KillWidget();
+}
+
+// Called by TabParent's Destroy() in response to an early tear down (Early
+// in that this is happening before layout in the child has had a chance
+// to destroy the child widget.) when the tab is closing.
+void
+PluginWidgetParent::ParentDestroy()
+{
+  PWLOG("PluginWidgetParent::ParentDestroy()\n");
+}
+
+bool
+PluginWidgetParent::RecvSetFocus(const bool& aRaise)
+{
+  ENSURE_CHANNEL;
+  PWLOG("PluginWidgetParent::RecvSetFocus(%d)\n", aRaise);
+  mWidget->SetFocus(aRaise);
+  return true;
+}
+
+bool
+PluginWidgetParent::RecvGetNativePluginPort(uintptr_t* value)
+{
+  ENSURE_CHANNEL;
+#if defined(MOZ_WIDGET_GTK)
+  *value = (uintptr_t)mWrapper->window;
+  NS_ASSERTION(*value, "no xid??");
+#else
+  *value = (uintptr_t)mWidget->GetNativeData(NS_NATIVE_PLUGIN_PORT);
+  NS_ASSERTION(*value, "no native port??");
+#endif
+  PWLOG("PluginWidgetParent::RecvGetNativeData() %p\n", (void*)*value);
+  return true;
+}
+
+bool
+PluginWidgetParent::RecvSetNativeChildWindow(const uintptr_t& aChildWindow)
+{
+#if defined(XP_WIN)
+  ENSURE_CHANNEL;
+  PWLOG("PluginWidgetParent::RecvSetNativeChildWindow(%p)\n",
+        (void*)aChildWindow);
+  mWidget->SetNativeData(NS_NATIVE_CHILD_WINDOW, aChildWindow);
+  return true;
+#else
+  NS_NOTREACHED("PluginWidgetParent::RecvSetNativeChildWindow not implemented!");
+  return false;
+#endif
+}
+
+} // namespace plugins
+} // namespace mozilla