[not part of build] 2-way plugin scripting example.

modules/plugin/samples/4x-scriptable/nsI4xScriptablePlugin.idl

@@ -22,10 +22,14 @@
 
 #include "nsISupports.idl"
 
+interface acmeIScriptObject;
+
 [scriptable, uuid(482e1890-1fe5-11d5-9cf8-0060b0fbd8ac)]
 interface nsI4xScriptablePlugin : nsISupports {
   void showVersion();
   void clear();
   
   readonly attribute string version;
+  
+  void setWindow(in acmeIScriptObject window);
 };

modules/plugin/samples/4x-scriptable/nsScriptablePeer.cpp

@@ -47,6 +47,8 @@
 // be callable from JavaScript
 //
 #include "plugin.h"
+#include "acmeIScriptObject.h"
+#include "npapi.h"
 
 static NS_DEFINE_IID(kI4xScriptablePluginIID, NS_I4XSCRIPTABLEPLUGIN_IID);
 static NS_DEFINE_IID(kIClassInfoIID, NS_ICLASSINFO_IID);
@@ -54,8 +56,9 @@ static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
 
 nsScriptablePeer::nsScriptablePeer(CPlugin* aPlugin)
 {
-  mPlugin = aPlugin;
   mRefCnt = 0;
+  mPlugin = aPlugin;
+  mWindow = nsnull;
 }
 
 nsScriptablePeer::~nsScriptablePeer()
@@ -133,3 +136,33 @@ NS_IMETHODIMP nsScriptablePeer::GetVersion(char * *aVersion)
     mPlugin->getVersion(aVersion);
   return NS_OK;
 }
+
+NS_IMETHODIMP nsScriptablePeer::SetWindow(acmeIScriptObject *window)
+{
+  NS_IF_ADDREF(window);
+  NS_IF_RELEASE(mWindow);
+  mWindow = window;
+  
+  // evaluate a JavaScript expression.
+  acmeIScriptObject* result;
+  nsresult rv = window->Evaluate("Math.PI", &result);
+  if (NS_SUCCEEDED(rv) && result) {
+      double value;
+      result->ToNumber(&value);
+      NS_RELEASE(result);
+  }
+
+  // read the current window's location.
+  acmeIScriptObject* location = nsnull;
+  rv = window->GetProperty("location", &location);
+  if (NS_SUCCEEDED(rv) && location) {
+    char* locationStr = NULL;
+    rv = location->ToString(&locationStr);
+    if (NS_SUCCEEDED(rv) && locationStr) {
+      NPN_MemFree(locationStr);
+    }
+    NS_RELEASE(location);
+  }
+  
+  return NS_OK;
+}

modules/plugin/samples/4x-scriptable/nsScriptablePeer.h

@@ -100,6 +100,7 @@ public:
 
 protected:
   CPlugin* mPlugin;
+  acmeIScriptObject* mWindow;
 };
 
 #endif