1 files changed, 158 insertions, 0 deletions
diff --git a/dom/plugins/ipc/NPEventWindows.h b/dom/plugins/ipc/NPEventWindows.h
new file mode 100644
index 0000000000..b2429883f8
--- /dev/null
+++ b/dom/plugins/ipc/NPEventWindows.h
@@ -0,0 +1,158 @@
+/* -*- 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_NPEventWindows_h
+#define mozilla_dom_plugins_NPEventWindows_h 1
+
+#ifndef WM_MOUSEHWHEEL
+#  define WM_MOUSEHWHEEL (0x020E)
+#endif
+
+#include "npapi.h"
+namespace mozilla {
+
+namespace plugins {
+
+// We use an NPRemoteEvent struct so that we can store the extra data on
+// the stack so that we don't need to worry about managing the memory.
+struct NPRemoteEvent {
+  NPEvent event;
+  union {
+    RECT rect;
+    WINDOWPOS windowpos;
+  } lParamData;
+  double contentsScaleFactor;
+};
+
+}  // namespace plugins
+
+}  // namespace mozilla
+
+namespace IPC {
+
+template <>
+struct ParamTraits<mozilla::plugins::NPRemoteEvent> {
+  typedef mozilla::plugins::NPRemoteEvent paramType;
+
+  static void Write(Message* aMsg, const paramType& aParam) {
+    // Make a non-const copy of aParam so that we can muck with
+    // its insides for tranport
+    paramType paramCopy;
+
+    paramCopy.event = aParam.event;
+
+    // We can't blindly ipc events because they may sometimes contain
+    // pointers to memory in the sending process. For example, the
+    // WM_IME_CONTROL with the IMC_GETCOMPOSITIONFONT message has lParam
+    // set to a pointer to a LOGFONT structure.
+    switch (paramCopy.event.event) {
+      case WM_WINDOWPOSCHANGED:
+        // The lParam parameter of WM_WINDOWPOSCHANGED holds a pointer to
+        // a WINDOWPOS structure that contains information about the
+        // window's new size and position
+        paramCopy.lParamData.windowpos =
+            *(reinterpret_cast<WINDOWPOS*>(paramCopy.event.lParam));
+        break;
+      case WM_PAINT:
+        // The lParam parameter of WM_PAINT holds a pointer to an RECT
+        // structure specifying the bounding box of the update area.
+        paramCopy.lParamData.rect =
+            *(reinterpret_cast<RECT*>(paramCopy.event.lParam));
+        break;
+
+      // the white list of events that we will ipc to the client
+      case WM_CHAR:
+      case WM_SYSCHAR:
+
+      case WM_KEYUP:
+      case WM_SYSKEYUP:
+
+      case WM_KEYDOWN:
+      case WM_SYSKEYDOWN:
+
+      case WM_DEADCHAR:
+      case WM_SYSDEADCHAR:
+      case WM_CONTEXTMENU:
+
+      case WM_CUT:
+      case WM_COPY:
+      case WM_PASTE:
+      case WM_CLEAR:
+      case WM_UNDO:
+
+      case WM_MOUSELEAVE:
+      case WM_MOUSEMOVE:
+      case WM_LBUTTONDOWN:
+      case WM_MBUTTONDOWN:
+      case WM_RBUTTONDOWN:
+      case WM_LBUTTONUP:
+      case WM_MBUTTONUP:
+      case WM_RBUTTONUP:
+      case WM_LBUTTONDBLCLK:
+      case WM_MBUTTONDBLCLK:
+      case WM_RBUTTONDBLCLK:
+
+      case WM_MOUSEWHEEL:
+      case WM_MOUSEHWHEEL:
+
+      case WM_SETFOCUS:
+      case WM_KILLFOCUS:
+
+      case WM_IME_STARTCOMPOSITION:
+      case WM_IME_COMPOSITION:
+      case WM_IME_ENDCOMPOSITION:
+      case WM_IME_CHAR:
+      case WM_IME_SETCONTEXT:
+      case WM_IME_COMPOSITIONFULL:
+      case WM_IME_KEYDOWN:
+      case WM_IME_KEYUP:
+      case WM_IME_SELECT:
+      case WM_INPUTLANGCHANGEREQUEST:
+      case WM_INPUTLANGCHANGE:
+        break;
+
+      default:
+        // RegisterWindowMessage events should be passed.
+        if (paramCopy.event.event >= 0xC000) break;
+
+        // FIXME/bug 567465: temporarily work around unhandled
+        // events by forwarding a "dummy event".  The eventual
+        // fix will be to stop trying to send these events
+        // entirely.
+        paramCopy.event.event = WM_NULL;
+        break;
+    }
+
+    aMsg->WriteBytes(&paramCopy, sizeof(paramType));
+  }
+
+  static bool Read(const Message* aMsg, PickleIterator* aIter,
+                   paramType* aResult) {
+    if (!aMsg->ReadBytesInto(aIter, aResult, sizeof(paramType))) {
+      return false;
+    }
+
+    if (aResult->event.event == WM_PAINT) {
+      // restore the lParam to point at the RECT
+      aResult->event.lParam =
+          reinterpret_cast<LPARAM>(&aResult->lParamData.rect);
+    } else if (aResult->event.event == WM_WINDOWPOSCHANGED) {
+      // restore the lParam to point at the WINDOWPOS
+      aResult->event.lParam =
+          reinterpret_cast<LPARAM>(&aResult->lParamData.windowpos);
+    }
+
+    return true;
+  }
+
+  static void Log(const paramType& aParam, std::wstring* aLog) {
+    aLog->append(L"(WINEvent)");
+  }
+};
+
+}  // namespace IPC
+
+#endif  // ifndef mozilla_dom_plugins_NPEventWindows_h