import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

accessible/windows/msaa/HTMLWin32ObjectAccessible.h

@@ -0,0 +1,70 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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_a11y_HTMLWin32ObjectAccessible_h_
+#define mozilla_a11y_HTMLWin32ObjectAccessible_h_
+
+#include "BaseAccessibles.h"
+
+#if defined(MOZ_CONTENT_SANDBOX)
+#include "mozilla/mscom/Ptr.h"
+#endif
+
+struct IAccessible;
+
+namespace mozilla {
+namespace a11y {
+
+class HTMLWin32ObjectOwnerAccessible : public AccessibleWrap
+{
+public:
+  // This will own the HTMLWin32ObjectAccessible. We create this where the
+  // <object> or <embed> exists in the tree, so that get_accNextSibling() etc.
+  // will still point to Gecko accessible sibling content. This is necessary
+  // because the native plugin accessible doesn't know where it exists in the
+  // Mozilla tree, and returns null for previous and next sibling. This would
+  // have the effect of cutting off all content after the plugin.
+  HTMLWin32ObjectOwnerAccessible(nsIContent* aContent,
+                                 DocAccessible* aDoc, void* aHwnd);
+  virtual ~HTMLWin32ObjectOwnerAccessible() {}
+
+  // Accessible
+  virtual void Shutdown();
+  virtual mozilla::a11y::role NativeRole();
+  virtual bool NativelyUnavailable() const;
+
+protected:
+  void* mHwnd;
+  RefPtr<Accessible> mNativeAccessible;
+};
+
+/**
+  * This class is used only internally, we never! send out an IAccessible linked
+  *   back to this object. This class is used to represent a plugin object when
+  *   referenced as a child or sibling of another Accessible node. We need only
+  *   a limited portion of the Accessible interface implemented here. The
+  *   in depth accessible information will be returned by the actual IAccessible
+  *   object returned by us in Accessible::NewAccessible() that gets the IAccessible
+  *   from the windows system from the window handle.
+  */
+class HTMLWin32ObjectAccessible : public DummyAccessible
+{
+public:
+  HTMLWin32ObjectAccessible(void* aHwnd, DocAccessible* aDoc);
+  virtual ~HTMLWin32ObjectAccessible() {}
+
+  virtual void GetNativeInterface(void** aNativeAccessible) override;
+
+protected:
+  void* mHwnd;
+#if defined(MOZ_CONTENT_SANDBOX)
+  mscom::ProxyUniquePtr<IAccessible> mCOMProxy;
+#endif
+};
+
+} // namespace a11y
+} // namespace mozilla
+
+#endif