private void OnInvokeFunction(CefBrowser browser, PluginMessage pluginMessage, JavaScriptPlugin handler)
{
var methodDescriptor = handler.Descriptor.Methods.Find(descriptor => descriptor.MethodName == pluginMessage.MemberName);
IJavaScriptPluginCallback returnCallback = null;
BrowserCallInfo parameterCallback = null;
if (pluginMessage.V8CallbackId != Guid.Empty)
{
if (methodDescriptor.HasCallbackParameter)
{
// Create a second stored callback info which represents the V8 callback function itself
// rather than the method that is being invoked now. This allows the callback function
// to be passed to and invoked by multiple native methods that accept a callback parameter.
parameterCallback = _pendingCallbacks.Get(pluginMessage.V8CallbackId);
if (parameterCallback == null)
{
var parameterCallbackMessage = new PluginMessage
{
MessageId = pluginMessage.V8CallbackId,
MessageType = PluginMessageType.ParameterCallback,
PluginId = string.Empty,
MemberName = string.Empty,
BrowserId = pluginMessage.BrowserId,
ContextId = pluginMessage.ContextId,
FrameId = pluginMessage.FrameId,
V8CallbackId = Guid.Empty
};
parameterCallback = CreateAndAddCall(browser.Clone(), parameterCallbackMessage, null, null);
}
}
var returnCallInfo = CreateAndAddCall(browser, pluginMessage, handler, parameterCallback);
if (!handler.IsValid)
{
RemoveAndCancelCall(returnCallInfo);
return;
}
returnCallback = returnCallInfo;
}
JArray callArgs = null;
if (!string.IsNullOrEmpty(pluginMessage.Data))
{
callArgs = JArray.Parse(pluginMessage.Data);
}
handler.InvokeFunction(
_pluginManager,
pluginMessage.BrowserId,
pluginMessage.FrameId,
pluginMessage.ContextId,
pluginMessage.MemberName,
new JArrayJavaScriptParameters(callArgs),
returnCallback);
}
protected override bool OnProcessMessageReceived(CefBrowser browser, CefProcessId sourceProcess, CefProcessMessage message)
{
if (browser != null)
{
// Clone the browser as CEFGlue will dispose the reference passed to this function when it returns
browser = browser.Clone();
}
// Use local variable to guard against client being disposed on different thread (assignment is atomic)
var core = _core;
return(core != null && core.OnProcessMessageReceived(browser, message));
}