C++ NPNetscapeFuncs::getproperty方法代码示例

static void
cloud_spy_log (const gchar * log_domain, GLogLevelFlags log_level, const gchar * message, gpointer user_data)
{
  NPNetscapeFuncs * browser = cloud_spy_nsfuncs;
  NPP instance = static_cast<NPP> (user_data);
  NPObject * window = NULL, * console = NULL;
  NPVariant variant, result;
  NPError error;

  (void) log_domain;
  (void) log_level;

  error = browser->getvalue (instance, NPNVWindowNPObject, &window);
  if (error != NPERR_NO_ERROR)
    goto beach;

  VOID_TO_NPVARIANT (variant);
  if (!browser->getproperty (instance, window, browser->getstringidentifier ("console"), &variant))
    goto beach;
  console = NPVARIANT_TO_OBJECT (variant);

  STRINGZ_TO_NPVARIANT (message, variant);
  VOID_TO_NPVARIANT (result);
  if (!browser->invoke (instance, console, browser->getstringidentifier ("log"), &variant, 1, &result))
    goto beach;
  browser->releasevariantvalue (&result);

beach:
  if (console != NULL)
    browser->releaseobject (console);
  if (window != NULL)
    browser->releaseobject (window);
}

static inline gchar *
get_string_property (NPP         instance,
                     NPObject   *obj,
                     const char *name)
{
  NPVariant result = { NPVariantType_Void };
  NPString result_str;
  gchar *result_copy;

  result_copy = NULL;

  if (!funcs.getproperty (instance, obj,
                          funcs.getstringidentifier (name),
                          &result))
    goto out;

  if (!NPVARIANT_IS_STRING (result))
    goto out;

  result_str = NPVARIANT_TO_STRING (result);
  result_copy = g_strndup (result_str.UTF8Characters, result_str.UTF8Length);

 out:
  funcs.releasevariantvalue (&result);
  return result_copy;
}

bool NPN_GetProperty(NPP id, NPObject* obj, NPIdentifier identifier, NPVariant *variant)
{
    char msg[1024];
    sprintf(msg, "NPN_GetProperty");
    logger->logMessage(msg);

    bool rv = NPNFuncs.getproperty(id, obj, identifier, variant);

    sprintf(msg, "--Return: %x", rv);
    logger->logMessage(msg);

    return rv;
}

SEXP R_NPAPI_GetProperty(SEXP plug, SEXP Robj, SEXP Rname, SEXP RconvRet)
{
 
  NPP inst = (NPP) R_ExternalPtrAddr(GET_SLOT( plug , Rf_install( "ref" ) ) );
  NPNetscapeFuncs *funcs = (NPNetscapeFuncs *) R_ExternalPtrAddr(GET_SLOT( GET_SLOT(plug, Rf_install("funcs")), Rf_install("ref")));

  NPVariant *obj = (NPVariant *) R_ExternalPtrAddr(GET_SLOT( Robj , Rf_install( "ref" ) ) );
  
  if(!NPVARIANT_IS_OBJECT(*obj))
    {
      //What should we return in this case?
      Rf_error("Robj is not an NPVariant containing an NPObject.");
      return R_NilValue;
    }
  convert_t convRet = (convert_t) INTEGER(RconvRet)[0];


  NPVariant *ret = (NPVariant *) funcs->memalloc(sizeof(NPVariant)); 
  
  const char *ccname = CHAR(STRING_ELT(Rname, 0));

  bool success = funcs->getproperty(inst, obj->value.objectValue, funcs->getstringidentifier(ccname), ret);
 
  if(!success)
    {
      Rf_error("Invoke failed.");
      return R_NilValue;
    }
    
  SEXP ans;
  PROTECT(ans = R_NilValue);
  //ConvertNPToR returns a bool which indicates whether it is safe to release the converted object.
  bool canfree = ConvertNPToR(ret, inst, funcs, convRet, &ans);

  if(canfree)
    funcs->releasevariantvalue(ret);
  
  UNPROTECT(1);
  
  return ans ;
}

bool NPN_GetProperty(NPP npp, NPObject* obj, NPIdentifier propertyName,
                     NPVariant *result)
{
  return NPNFuncs.getproperty(npp, obj, propertyName, result);
}

NPError
NPP_New(NPMIMEType    mimetype,
	NPP           instance,
	uint16_t      mode,
	int16_t       argc,
	char        **argn,
	char        **argv,
	NPSavedData  *saved)
{
  /* instance initialization function */
  NPError ret = NPERR_NO_ERROR;
  PluginData *data;
  GError *error = NULL;

  /* first, check if the location is what we expect */
  NPObject *window;
  NPVariant document;
  NPVariant location;
  NPVariant href;

  g_debug ("plugin created");

  funcs.getvalue (instance, NPNVWindowNPObject, &window);

  funcs.getproperty (instance, window,
		     funcs.getstringidentifier ("document"),
		     &document);
  g_assert (NPVARIANT_IS_OBJECT (document));

  funcs.getproperty (instance, NPVARIANT_TO_OBJECT (document),
		     funcs.getstringidentifier ("location"),
		     &location);
  g_assert (NPVARIANT_IS_OBJECT (location));

  funcs.getproperty (instance, NPVARIANT_TO_OBJECT (location),
		     funcs.getstringidentifier ("href"),
		     &href);
  g_assert (NPVARIANT_IS_STRING (href));

  if (strncmp (NPVARIANT_TO_STRING (href).UTF8Characters, ORIGIN, sizeof (ORIGIN)-1))
    {
      g_debug ("origin does not match, is %s", NPVARIANT_TO_STRING (href).UTF8Characters);

      if (!ALLOW_FOREIGN_ORIGIN)
	{
	  ret = NPERR_GENERIC_ERROR;
	  goto out;
	}
    }

  data = g_slice_new (PluginData);
  instance->pdata = data;

  data->proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION,
					       G_DBUS_PROXY_FLAGS_NONE,
					       NULL, /* interface info */
					       "org.gnome.Shell",
					       "/org/gnome/Shell",
					       "org.gnome.Shell",
					       NULL, /* GCancellable */
					       &error);
  if (!data->proxy) {
    /* ignore error if the shell is not running, otherwise warn */
    if (error->domain != G_DBUS_ERROR ||
	error->code != G_DBUS_ERROR_NAME_HAS_NO_OWNER)
      {
	g_warning ("Failed to set up Shell proxy: %s", error->message);
	g_error_clear (&error);
      }
    ret = NPERR_GENERIC_ERROR;
  }

  g_debug ("plugin created successfully");

 out:
  funcs.releaseobject (window);
  funcs.releasevariantvalue (&document);
  funcs.releasevariantvalue (&location);
  funcs.releasevariantvalue (&href);

  return ret;
}