protected override void Execute()
{
if (cb != null)
{
var args = new List <CefV8Value>();
foreach (var arg in arguments)
{
args.Add(Extension.ConvertToV8Value(arg));
}
cb.ExecuteFunctionWithContext(cbcontext, null, args.ToArray());
}
}
private static object InvokeScript(CefV8Context context, string memberName, params object[] args)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
if (!context.Enter())
{
throw new CefException("Failed to enter V8 context.");
}
try
{
// TODO: this list can be private list of context, 'cause we can invoke only one function at one time
List <CefV8Value> proxies = new List <CefV8Value>(16);
// javascript 'this' object
CefV8Value obj = null;
CefV8Value target = context.GetGlobal();
proxies.Add(target);
if (!memberName.Contains('.'))
{
obj = target;
target = obj.GetValue(memberName);
proxies.Add(target);
}
else
{
foreach (var member in memberName.Split('.'))
{
obj = target;
target = obj.GetValue(member); // TODO: do analysis of target - if it is not an object - throw
if (!target.IsObject)
{
throw new CefException("Argument 'memberName' must be member access expression to a function. Invalid object in path.");
}
proxies.Add(target);
}
}
if (!target.IsFunction)
{
throw new ArgumentException("Argument 'memberName' must be member access expression to a function.");
}
CefV8Value[] v8Args;
if (args.Length == 0)
{
v8Args = null;
}
else
{
v8Args = new CefV8Value[args.Length]; // TODO: InvokeScript core can be optimized by prevent recreating arrays
for (var i = 0; i < args.Length; i++)
{
var value = CefConvert.ToV8Value(args[i]);
v8Args[i] = value;
}
}
var v8RetVal = target.ExecuteFunctionWithContext(context, obj, v8Args);
// force destroing of proxies, to avoid unneccessary GC load (CLR and V8)
foreach (var proxy in proxies)
{
proxy.Dispose();
}
proxies.Clear();
// FIXME: not sure if exception CAN be null, this need to be checked
if (v8RetVal.HasException)
{
var exception = v8RetVal.GetException();
throw new JavaScriptException(exception.GetMessage());
}
//if (!string.IsNullOrEmpty(exception))
var result = CefConvert.ToObject(v8RetVal);
v8RetVal.Dispose();
return(result);
}
finally
{
if (!context.Exit())
{
throw new CefException("Failed to exit V8 context.");
}
}
}