1 files changed, 80 insertions, 0 deletions
diff --git a/widget/PluginWidgetProxy.h b/widget/PluginWidgetProxy.h
new file mode 100644
index 0000000000..dde703c095
--- /dev/null
+++ b/widget/PluginWidgetProxy.h
@@ -0,0 +1,80 @@
+/* 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/. */
+
+#ifndef mozilla_widget_RemotePlugin_h__
+#define mozilla_widget_RemotePlugin_h__
+
+#ifndef XP_WIN
+#  error "Plugin widgets are Windows-only."
+#endif
+
+#include "PuppetWidget.h"
+#include "mozilla/dom/BrowserChild.h"
+
+/*
+ * PluginWidgetProxy is a nsIWidget wrapper we hand around in plugin and layout
+ * code. It wraps a native widget it creates in the chrome process. Since this
+ * is for plugins, only a limited set of the widget apis need to be overridden,
+ * the rest of the implementation is in PuppetWidget or nsBaseWidget.
+ */
+
+namespace mozilla {
+namespace plugins {
+class PluginWidgetChild;
+}  // namespace plugins
+namespace widget {
+
+class PluginWidgetProxy final : public PuppetWidget {
+ public:
+  explicit PluginWidgetProxy(dom::BrowserChild* aBrowserChild,
+                             mozilla::plugins::PluginWidgetChild* aChannel);
+
+ protected:
+  virtual ~PluginWidgetProxy();
+
+ public:
+  NS_DECL_ISUPPORTS_INHERITED
+
+  // nsIWidget
+  using PuppetWidget::Create;  // for Create signature not overridden here
+  [[nodiscard]] virtual nsresult Create(
+      nsIWidget* aParent, nsNativeWidget aNativeParent,
+      const LayoutDeviceIntRect& aRect,
+      nsWidgetInitData* aInitData = nullptr) override;
+  virtual void Destroy() override;
+  virtual void SetFocus(Raise, mozilla::dom::CallerType aCallerType) override;
+  virtual void SetParent(nsIWidget* aNewParent) override;
+
+  virtual nsIWidget* GetParent(void) override;
+  virtual void* GetNativeData(uint32_t aDataType) override;
+  void SetNativeData(uint32_t aDataType, uintptr_t aVal) override;
+  virtual nsTransparencyMode GetTransparencyMode() override {
+    return eTransparencyOpaque;
+  }
+  virtual void GetWindowClipRegion(
+      nsTArray<LayoutDeviceIntRect>* aRects) override;
+
+ public:
+  /**
+   * When tabs are closed PPluginWidget can terminate before plugin code is
+   * finished tearing us down. When this happens plugin calls over mActor
+   * fail triggering an abort in the content process. To protect against this
+   * the connection tells us when it is torn down here so we can avoid making
+   * calls while content finishes tearing us down.
+   */
+  void ChannelDestroyed() { mActor = nullptr; }
+
+ private:
+  // Our connection with the chrome widget, created on PBrowser.
+  mozilla::plugins::PluginWidgetChild* mActor;
+  // PuppetWidget does not implement parent apis, but we need
+  // them for plugin widgets.
+  nsCOMPtr<nsIWidget> mParent;
+  uintptr_t mCachedPluginPort;
+};
+
+}  // namespace widget
+}  // namespace mozilla
+
+#endif