1 files changed, 95 insertions, 0 deletions
diff --git a/dom/plugins/ipc/NPEventUnix.h b/dom/plugins/ipc/NPEventUnix.h
new file mode 100644
index 000000000..2a1945837
--- /dev/null
+++ b/dom/plugins/ipc/NPEventUnix.h
@@ -0,0 +1,95 @@
+/* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 8 -*- */
+/* 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;
+};
+
+}
+
+}
+
+
+//
+// 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