Bug 539280 - Add support for NPNVnetscapeWindow query on Linux, r=karlt

dom/plugins/PPluginInstance.ipdl

@@ -49,6 +49,7 @@ using NPError;
 using NPRemoteWindow;
 using NPRemoteEvent;
 using NPRect;
+using mozilla::plugins::NativeWindowHandle;
 
 namespace mozilla {
 namespace plugins {
@@ -94,7 +95,7 @@ parent:
   rpc NPN_GetValue_NPNVprivateModeBool()
     returns (bool value, NPError result);
   rpc NPN_GetValue_NPNVnetscapeWindow()
-    returns (intptr_t value, NPError result);
+    returns (NativeWindowHandle value, NPError result);
 
   rpc NPN_SetValue_NPPVpluginWindow(bool windowed)
     returns (NPError result);

dom/plugins/PluginInstanceChild.cpp

@@ -210,7 +210,7 @@ PluginInstanceChild::NPN_GetValue(NPNVariable aVar,
         if (mWindow.type == NPWindowTypeDrawable) {
             HWND hwnd = NULL;
             NPError result;
-            if (!CallNPN_GetValue_NPNVnetscapeWindow((intptr_t*)&hwnd, &result)) {
+            if (!CallNPN_GetValue_NPNVnetscapeWindow(&hwnd, &result)) {
                 return NPERR_GENERIC_ERROR;
             }
             *static_cast<HWND*>(aValue) = hwnd;
@@ -220,6 +220,10 @@ PluginInstanceChild::NPN_GetValue(NPNVariable aVar,
             *static_cast<HWND*>(aValue) = mPluginWindowHWND;
             return NPERR_NO_ERROR;
         }
+#elif defined(MOZ_X11)
+        NPError result;
+        CallNPN_GetValue_NPNVnetscapeWindow(static_cast<XID*>(aValue), &result);
+        return result;
 #else
         return NPERR_GENERIC_ERROR;
 #endif

dom/plugins/PluginInstanceParent.cpp

@@ -151,16 +151,20 @@ PluginInstanceParent::AnswerNPN_GetValue_NPNVisOfflineBool(bool* value,
 }
 
 bool
-PluginInstanceParent::AnswerNPN_GetValue_NPNVnetscapeWindow(intptr_t* value,
+PluginInstanceParent::AnswerNPN_GetValue_NPNVnetscapeWindow(NativeWindowHandle* value,
                                                             NPError* result)
 {
 #ifdef XP_WIN
-    HWND hwnd;
-    *result = mNPNIface->getvalue(mNPP, NPNVnetscapeWindow, &hwnd);
-    *value = (intptr_t)hwnd;
-    return true;
-#endif
+    HWND id;
+#elif defined(MOZ_X11)
+    XID id;
+#else
     return false;
+#endif
+
+    *result = mNPNIface->getvalue(mNPP, NPNVnetscapeWindow, &id);
+    *value = id;
+    return true;
 }
 
 bool

dom/plugins/PluginInstanceParent.h

@@ -104,7 +104,8 @@ public:
     virtual bool
     AnswerNPN_GetValue_NPNVisOfflineBool(bool* value, NPError* result);
     virtual bool
-    AnswerNPN_GetValue_NPNVnetscapeWindow(intptr_t* value, NPError* result);
+    AnswerNPN_GetValue_NPNVnetscapeWindow(NativeWindowHandle* value,
+                                          NPError* result);
     virtual bool
     AnswerNPN_GetValue_NPNVWindowNPObject(
                                        PPluginScriptableObjectParent** value,

dom/plugins/PluginMessageUtils.h

@@ -109,6 +109,14 @@ struct NPRemoteWindow
 #endif
 };
 
+#ifdef XP_WIN
+typedef HWND NativeWindowHandle;
+#elif defined(MOZ_X11)
+typedef XID NativeWindowHandle;
+#else
+#error Need NativeWindowHandle for this platform
+#endif
+
 // XXX maybe not the best place for these. better one?
 
 #define VARSTR(v_)  case v_: return #v_