/// <summary>
/// For object constructed in JS, we need to create a C# representation and bind it to that
/// object. For this, we'll use a <see cref="Dictionary{TKey,TValue}"/>. Possibly a later addition
/// could use a custom serialization process and allow the user to control.
/// </summary>
private Dictionary <string, object> NewHostObject(JavaScriptValue arg)
{
// Create new Dictionary mapping to hold the properties, Create a new bindable JS object to replace
// the existing one. Note: This could cause issues if these objects are used as keys.
var d = new Dictionary <string, object>();
var replacement = _binder.BindObject(d);
var propNames = (string[])ToHostArray(arg.GetOwnPropertyNames(), typeof(string[]));
for (var i = 0; i < propNames.Length; ++i)
{
var propName = propNames[i];
var propId = JavaScriptPropertyId.FromString(propName);
var jsProp = arg.GetProperty(propId);
// Copy Properties into Replacement
replacement.SetProperty(propId, jsProp, true);
Type propType;
if (!TryInferType(jsProp, out propType))
{
throw new Exception($"Failed to create Host representation of JS object. Property: {propName}");
}
d[propName] = ToHostObject(jsProp, propType);
}
return(d);
}
/// <summary>
/// Creates the <see cref="JsBinding"/> instance representing the new bound JavaScript object.
/// </summary>
public JsBinding Build()
{
return(_scope.Run(() =>
{
// Create a host object binding or new JS Object binding
var jsValue = null != _boundTo
? _binder.BindObject(_boundTo)
: JavaScriptValue.CreateObject();
var binding = new JsBinding(_scope, _binder, _interop, jsValue);
// Bind Host Object Methods, Properties, and Fields if bound to host object
if (null != _boundTo && null != _hostType)
{
BindMethods(binding, _hostType, _boundTo);
BindProperties(binding, _hostType, _boundTo);
BindFields(binding, _hostType, _boundTo);
}
// Set custom binding values
if (null != _values)
{
for (int i = 0; i < _values.Count; ++i)
{
var valueDescriptor = _values[i];
binding.SetValue(valueDescriptor.Name, valueDescriptor.Value, valueDescriptor.ValueType);
}
}
return binding;
}));
}