1 files changed, 90 insertions, 0 deletions
diff --git a/dom/plugins/ipc/NPEventUnix.h b/dom/plugins/ipc/NPEventUnix.h
new file mode 100644
index 0000000000..55494b4d8c
--- /dev/null
+++ b/dom/plugins/ipc/NPEventUnix.h
@@ -0,0 +1,90 @@
+/* -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 8 -*- */
+/* vim: set sw=2 ts=8 et tw=80 ft=cpp : */
+/* 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_dom_plugins_NPEventUnix_h
+#define mozilla_dom_plugins_NPEventUnix_h 1
+
+#include "npapi.h"
+
+#ifdef MOZ_X11
+#  include "mozilla/X11Util.h"
+#endif
+
+namespace mozilla {
+
+namespace plugins {
+
+struct NPRemoteEvent {
+  NPEvent event;
+};
+
+}  // namespace plugins
+
+}  // namespace mozilla
+
+//
+// XEvent is defined as a union of all more specific X*Events.
+// Luckily, as of xorg 1.6.0 / X protocol 11 rev 0, the only pointer
+// field contained in any of these specific X*Event structs is a
+// |Display*|.  So to simplify serializing these XEvents, we make the
+//
+// ********** XXX ASSUMPTION XXX **********
+//
+// that the process to which the event is forwarded shares the same
+// display as the process on which the event originated.
+//
+// With this simplification, serialization becomes a simple memcpy to
+// the output stream.  Deserialization starts as just a memcpy from
+// the input stream, BUT we then have to write the correct |Display*|
+// into the right field of each X*Event that contains one.
+//
+
+namespace IPC {
+
+template <>
+struct ParamTraits<mozilla::plugins::NPRemoteEvent>  // synonym for XEvent
+{
+  typedef mozilla::plugins::NPRemoteEvent paramType;
+
+  static void Write(Message* aMsg, const paramType& aParam) {
+    aMsg->WriteBytes(&aParam, sizeof(paramType));
+  }
+
+  static bool Read(const Message* aMsg, PickleIterator* aIter,
+                   paramType* aResult) {
+    if (!aMsg->ReadBytesInto(aIter, aResult, sizeof(paramType))) {
+      return false;
+    }
+
+#ifdef MOZ_X11
+    SetXDisplay(aResult->event);
+#endif
+    return true;
+  }
+
+  static void Log(const paramType& aParam, std::wstring* aLog) {
+    // TODO
+    aLog->append(L"(XEvent)");
+  }
+
+#ifdef MOZ_X11
+ private:
+  static void SetXDisplay(XEvent& ev) {
+    Display* display = mozilla::DefaultXDisplay();
+    if (ev.type >= KeyPress) {
+      ev.xany.display = display;
+    } else {
+      // XXX assuming that this is an error event
+      // (type == 0? not clear from Xlib.h)
+      ev.xerror.display = display;
+    }
+  }
+#endif
+};
+
+}  // namespace IPC
+
+#endif  // ifndef mozilla_dom_plugins_NPEventX11_h