public static int RegisterDelegate(JavaScriptFunction callback, SynchronizationContext syncContext)
{
var cookie = Interlocked.Increment(ref registrationTokens);
eventRegistrations[cookie] = Tuple.Create(callback, syncContext);
return(cookie);
}
public JavaScriptArray Filter(JavaScriptFunction predicate)
{
if (predicate == null)
{
throw new ArgumentNullException(nameof(predicate));
}
return(GetArrayBuiltin("filter").Invoke(this, predicate) as JavaScriptArray);
}
public void ForEach(JavaScriptFunction callee)
{
if (callee == null)
{
throw new ArgumentNullException(nameof(callee));
}
GetArrayBuiltin("forEach").Invoke(this, callee);
}
public JavaScriptValue ReduceRight(JavaScriptFunction aggregator, JavaScriptValue initialValue)
{
if (aggregator == null)
{
throw new ArgumentNullException(nameof(aggregator));
}
return(GetArrayBuiltin("reduceRight").Invoke(this, aggregator, initialValue));
}
public bool Some(JavaScriptFunction predicate)
{
if (predicate == null)
{
throw new ArgumentNullException(nameof(predicate));
}
return(GetEngine().Converter.ToBoolean(GetArrayBuiltin("some").Invoke(this, predicate)));
}
public JavaScriptArray Map(JavaScriptFunction converter)
{
if (converter == null)
{
throw new ArgumentNullException(nameof(converter));
}
return(GetArrayBuiltin("map").Invoke(this, converter) as JavaScriptArray);
}
internal JavaScriptValue CreateValueFromHandle(JavaScriptValueSafeHandle handle)
{
Debug.Assert(!(handle.IsClosed || handle.IsInvalid));
JsValueType kind;
Errors.ThrowIfIs(api_.JsGetValueType(handle, out kind));
JavaScriptValue result = null;
switch (kind)
{
case JsValueType.JsArray:
result = new JavaScriptArray(handle, JavaScriptValueType.Array, this);
break;
case JsValueType.JsFunction:
result = new JavaScriptFunction(handle, JavaScriptValueType.Function, this);
break;
case JsValueType.JsObject:
case JsValueType.JsNull:
case JsValueType.JsError:
result = new JavaScriptObject(handle, JavaScriptValueType.Object, this);
break;
case JsValueType.JsSymbol:
result = new JavaScriptSymbol(handle, JavaScriptValueType.Symbol, this);
break;
case JsValueType.JsArrayBuffer:
result = new JavaScriptArrayBuffer(handle, JavaScriptValueType.ArrayBuffer, this);
break;
case JsValueType.JsTypedArray:
result = new JavaScriptTypedArray(handle, JavaScriptValueType.TypedArray, this);
break;
case JsValueType.JsDataView:
result = new JavaScriptDataView(handle, JavaScriptValueType.DataView, this);
break;
case JsValueType.JsBoolean:
case JsValueType.JsNumber:
case JsValueType.JsString:
case JsValueType.JsUndefined:
default:
result = new JavaScriptValue(handle, kind.ToApiValueType(), this);
break;
}
return(result);
}
public void Sort(JavaScriptFunction compareFunction = null)
{
var fn = GetArrayBuiltin("sort");
List <JavaScriptValue> args = new List <JavaScriptValue>();
args.Add(this);
if (compareFunction != null)
{
args.Add(compareFunction);
}
fn.Invoke(args);
}
public void Sort(JavaScriptFunction compareFunction = null)
{
var fn = GetArrayBuiltin("sort");
if (compareFunction != null)
{
fn.Invoke(this, compareFunction);
}
else
{
fn.Invoke(this);
}
}
public JavaScriptValue ReduceRight(JavaScriptFunction aggregator)
{
if (aggregator == null)
{
throw new ArgumentNullException(nameof(aggregator));
}
var args = new List <JavaScriptValue>();
args.Add(this);
args.Add(aggregator);
return(GetArrayBuiltin("reduceRight").Invoke(args));
}
public JavaScriptArray Map(JavaScriptFunction converter)
{
if (converter == null)
{
throw new ArgumentNullException(nameof(converter));
}
var args = new List <JavaScriptValue>();
args.Add(this);
args.Add(converter);
return(GetArrayBuiltin("map").Invoke(args) as JavaScriptArray);
}
public bool Some(JavaScriptFunction predicate)
{
if (predicate == null)
{
throw new ArgumentNullException(nameof(predicate));
}
var args = new List <JavaScriptValue>();
args.Add(this);
args.Add(predicate);
return(GetEngine().Converter.ToBoolean(GetArrayBuiltin("some").Invoke(args)));
}
public void ForEach(JavaScriptFunction callee)
{
if (callee == null)
{
throw new ArgumentNullException(nameof(callee));
}
var args = new List <JavaScriptValue>();
args.Add(this);
args.Add(callee);
GetArrayBuiltin("forEach").Invoke(args);
}
public JavaScriptArray Filter(JavaScriptFunction predicate)
{
if (predicate == null)
{
throw new ArgumentNullException(nameof(predicate));
}
var args = new List <JavaScriptValue>();
args.Add(this);
args.Add(predicate);
return(GetArrayBuiltin("filter").Invoke(args) as JavaScriptArray);
}
internal JavaScriptObject CreateObjectFromHandle(JavaScriptValueSafeHandle handle)
{
JsValueType kind;
Errors.ThrowIfIs(api_.JsGetValueType(handle, out kind));
JavaScriptObject result = null;
switch (kind)
{
case JsValueType.JsArray:
result = new JavaScriptArray(handle, JavaScriptValueType.Array, this);
break;
case JsValueType.JsFunction:
result = new JavaScriptFunction(handle, JavaScriptValueType.Function, this);
break;
case JsValueType.JsObject:
case JsValueType.JsError:
case JsValueType.JsNull:
result = new JavaScriptObject(handle, JavaScriptValueType.Object, this);
break;
case JsValueType.JsArrayBuffer:
result = new JavaScriptArrayBuffer(handle, JavaScriptValueType.ArrayBuffer, this);
break;
case JsValueType.JsTypedArray:
result = new JavaScriptTypedArray(handle, JavaScriptValueType.TypedArray, this);
break;
case JsValueType.JsDataView:
result = new JavaScriptDataView(handle, JavaScriptValueType.DataView, this);
break;
case JsValueType.JsBoolean:
case JsValueType.JsNumber:
case JsValueType.JsString:
case JsValueType.JsUndefined:
case JsValueType.JsSymbol:
default:
throw new ArgumentException();
}
return(result);
}
public static int RegisterDelegate(JavaScriptFunction callback, SynchronizationContext syncContext)
{
var cookie = Interlocked.Increment(ref registrationTokens);
eventRegistrations[cookie] = Tuple.Create(callback, syncContext);
return cookie;
}
private void ProjectProperties(string owningTypeName, JavaScriptObject target, JavaScriptEngine engine, IEnumerable <PropertyInfo> properties)
{
foreach (var prop in properties)
{
if (prop.GetIndexParameters().Length > 0)
{
throw new NotSupportedException("Index properties not supported for projecting CLR to JavaScript objects.");
}
JavaScriptFunction jsGet = null, jsSet = null;
if (prop.GetMethod != null)
{
jsGet = engine.CreateFunction((eng, ctor, thisObj, args) =>
{
var @this = thisObj as JavaScriptObject;
if (@this == null)
{
eng.SetException(eng.CreateTypeError("Could not retrieve property '" + prop.Name + "' because there was an invalid 'this' context."));
return(eng.UndefinedValue);
}
object external = null;
if (!prop.GetMethod.IsStatic)
{
external = @this.ExternalObject;
if (external == null)
{
external = @this.Prototype.ExternalObject;
}
if (external == null)
{
throw new Exception("this object not found for method invocation. Perhaps it has been garbage collected.");
}
}
try
{
return(FromObject(prop.GetValue(external)));
}
catch (Exception ex)
{
eng.SetException(FromObject(ex), ex);
return(eng.UndefinedValue);
}
}, owningTypeName + "." + prop.Name + ".get");
}
if (prop.SetMethod != null)
{
jsSet = engine.CreateFunction((eng, ctor, thisObj, args) =>
{
var @this = thisObj as JavaScriptObject;
if (@this == null)
{
eng.SetException(eng.CreateTypeError("Could not retrieve property '" + prop.Name + "' because there was an invalid 'this' context."));
return(eng.UndefinedValue);
}
try
{
var val = ToObject(args.First());
if (prop.PropertyType == typeof(int))
{
val = (int)(double)val;
}
var obj = @this.ExternalObject;
if (obj == null && @this.Prototype.ExternalObject == engine.GlobalObject.Prototype.ExternalObject)
{
obj = @this.Prototype.ExternalObject;
}
prop.SetValue(obj, val);
return(eng.UndefinedValue);
}
catch (Exception ex)
{
eng.SetException(FromObject(ex), ex);
return(eng.UndefinedValue);
}
}, owningTypeName + "." + prop.Name + ".set");
}
var descriptor = engine.CreateObject();
if (jsGet != null)
{
descriptor.SetPropertyByName("get", jsGet);
}
if (jsSet != null)
{
descriptor.SetPropertyByName("set", jsSet);
}
descriptor.SetPropertyByName("enumerable", engine.TrueValue);
target.DefineProperty(prop.Name, descriptor);
}
}
private void ProjectEvents(string owningTypeName, JavaScriptObject target, JavaScriptEngine engine, IEnumerable <EventInfo> events, JavaScriptProjection baseTypeProjection, bool instance)
{
var eventsArray = events.ToArray();
var eventsLookup = eventsArray.ToDictionary(ei => ei.Name.ToLower());
// General approach here
// if there is a base thing, invoke that
// for each event, register a delegate that marshals it back to JavaScript
var add = engine.CreateFunction((eng, ctor, thisObj, args) =>
{
bool callBase = instance && (baseTypeProjection?.HasInstanceEvents ?? false);
var @this = thisObj as JavaScriptObject;
if (@this == null)
{
return(eng.UndefinedValue);
}
if (callBase)
{
var baseObj = baseTypeProjection.Prototype;
var baseFn = baseObj.GetPropertyByName("addEventListener") as JavaScriptFunction;
if (baseFn != null)
{
baseFn.Call(@this, args);
}
}
var argsArray = args.ToArray();
if (argsArray.Length < 2)
{
return(eng.UndefinedValue);
}
string eventName = argsArray[0].ToString();
JavaScriptFunction callbackFunction = argsArray[1] as JavaScriptFunction;
if (callbackFunction == null)
{
return(eng.UndefinedValue);
}
EventInfo curEvent;
if (!eventsLookup.TryGetValue(eventName, out curEvent))
{
return(eng.UndefinedValue);
}
MethodInfo targetMethod = curEvent.EventHandlerType.GetMethod("Invoke");
var paramsExpr = targetMethod.GetParameters().Select(p => Expression.Parameter(p.ParameterType, p.Name)).ToArray();
int cookie = EventMarshaler.RegisterDelegate(callbackFunction, SynchronizationContext.Current);
var marshaler = Expression.Lambda(curEvent.EventHandlerType, Expression.Block(
Expression.Call(
typeof(EventMarshaler).GetMethod(nameof(EventMarshaler.InvokeJavaScriptCallback)),
Expression.Constant(cookie),
Expression.NewArrayInit(typeof(string), targetMethod.GetParameters().Select(p => Expression.Constant(p.Name))),
Expression.NewArrayInit(typeof(object), paramsExpr))
), paramsExpr);
curEvent.AddMethod.Invoke(@this.ExternalObject, new object[] { marshaler.Compile() });
return(eng.UndefinedValue);
}, owningTypeName + ".addEventListener");
target.SetPropertyByName("addEventListener", add);
}
