/// <summary>
/// This method binds a function to a specific field on a JavaScript object.
/// </summary>
/// <param name="name">The name of the field.</param>
/// <param name="jsFunction">The callback function to execute when the JavaScript function is invoked.</param>
public void AddFunction(string name, JavaScriptNativeFunction jsFunction)
{
_scope.Run(() =>
{
var jsValue = _binder.BindFunction(jsFunction);
_value.SetProperty(JavaScriptPropertyId.FromString(name), jsValue, true);
});
}
/// <summary>
/// Creates a <see cref="JavaScriptValue"/> representing the host delegate.
/// </summary>
/// <remarks>This call requires an active context.</remarks>
public JavaScriptValue ToJsFunction(object obj, Type type)
{
var invokeInfo = type.GetMethod("Invoke");
if (null == invokeInfo)
{
throw new Exception($"Cannot convert delegate of type: {type} to JavaScript function.");
}
JavaScriptNativeFunction func = (v, s, args, argLength, data) =>
{
var parameters = invokeInfo.GetParameters();
var realParams = new object[parameters.Length];
var argIndex = 1;
for (int j = 0; j < parameters.Length; ++j)
{
var arg = args[argIndex++];
var param = parameters[j];
realParams[j] = ToHostObject(arg, param.ParameterType);
}
var result = invokeInfo.Invoke(obj, realParams);
var resultType = invokeInfo.ReturnType;
if (resultType == typeof(void))
{
return(JavaScriptValue.Invalid);
}
return(ToJsObject(result, JsConversions.TypeFor(result, resultType)));
};
return(_binder.BindFunction(func));
}