private static JavaScriptValue ToJSMethod(IServiceNode node, Action <IEnumerable <JavaScriptValue> > a)
{
IJSValueService jsValueService = node.GetService <IJSValueService>();
return(jsValueService.CreateFunction(
(JavaScriptNativeFunction)((callee, isConstructCall, arguments, argumentCount, callbackData) =>
{
a(arguments.Skip(1));
return jsValueService.JSValue_Undefined;
}), IntPtr.Zero));
}
public static T ReadProperty <T>(this IJSValueService service, JavaScriptValue target, JavaScriptPropertyId id, T defaultValue)
{
if (service.HasProperty(target, id))
{
return(service.ReadProperty <T>(target, id));
}
else
{
return(defaultValue);
}
}
public static JavaScriptValue CreateTypedArray(this IJSValueService valueService, JSTypedArray source, JavaScriptValue?arrayBufferSource)
{
IContextSwitchService switchService = valueService.CurrentNode.GetService <IRuntimeService>().InternalContextSwitchService;
if (source.JSSource.IsValid)
{
return(source.JSSource);
}
switch (source.BufferSource)
{
case SharedBufferSourceEnum.CreateByDotnet:
return(switchService.With <JavaScriptValue>(
() =>
{
if (arrayBufferSource == null)
{
throw new ArgumentNullException(nameof(arrayBufferSource));
}
var result = JavaScriptValue.CreateTypedArray(source.ArrayType, arrayBufferSource.Value, source.Position, source.UnitCount);
source.SetJSSource(result, switchService);
return result;
}
));
case SharedBufferSourceEnum.CreateByJavascript:
throw new InvalidOperationException("invalid source typed array"); //create by javascript should already have JavaScriptValue assigned
case SharedBufferSourceEnum.CreateInJavascript:
return(switchService.With <JavaScriptValue>(
() =>
{
var result = JavaScriptValue.CreateTypedArray(source.ArrayType, JavaScriptValue.Invalid, source.Position, source.UnitCount);
source.SetJSSource(result, switchService); //hold the objec
//get the internal storage
JavaScriptValue.GetTypedArrayStorage(result, out IntPtr data, out uint bufferLength, out JavaScriptTypedArrayType type, out int elementSize);
source.InitWindow(data, false);
source.InitBeforeConvert(source.Buffer);
return result;
}
));
case SharedBufferSourceEnum.CreateByExternal:
throw new ArgumentException("TypedArray does not support create from external");
default:
throw new ArgumentOutOfRangeException("Invalid BufferSource property in JSTypedArray object");
}
}
/// <summary>
/// Create DataView in javascript
/// this method requires a sourceArrayBuffer which make sure the arraybuffer is initialized before transfer to javascript
/// </summary>
/// <param name="sourceArrayBuffer">ArrayBuffer object</param>
/// <param name="source"></param>
/// <returns></returns>
public static JavaScriptValue CreateDataView(this IJSValueService valueService, JavaScriptValue sourceArrayBuffer, JSDataView source)
{
IContextSwitchService switchService = valueService.CurrentNode.GetService <IRuntimeService>().InternalContextSwitchService;
if (source.JSSource.IsValid)
{
return(source.JSSource);
}
switch (source.BufferSource)
{
case SharedBufferSourceEnum.CreateByDotnet:
return(switchService.With <JavaScriptValue>(
() =>
{
var result = JavaScriptValue.CreateDataView(sourceArrayBuffer, source.Position, (uint)source.Size);
source.SetJSSource(result, switchService);
source.InitBeforeConvert(source.Buffer);
return result;
}
));
case SharedBufferSourceEnum.CreateByJavascript:
throw new InvalidOperationException("invalid source typed array"); //create by javascript should already have JavaScriptValue assigned
case SharedBufferSourceEnum.CreateInJavascript:
return(switchService.With <JavaScriptValue>(
() =>
{
var result = JavaScriptValue.CreateDataView(sourceArrayBuffer, source.Position, (uint)source.Size);
source.SetJSSource(result, switchService);
JavaScriptValue.GetDataViewStorage(result, out IntPtr data, out uint bufferLength);
source.InitWindow(data, false);
source.InitBeforeConvert(source.Buffer);
return result;
}
));
case SharedBufferSourceEnum.CreateByExternal:
throw new ArgumentException("DataView does not support create from external");
default:
throw new ArgumentOutOfRangeException("Invalid BufferSource property in JSDataView object");
}
}
public static JavaScriptValue CreateArrayBuffer(this IJSValueService valueService, JSArrayBuffer source)
{
IContextSwitchService switchService = valueService.CurrentNode.GetService <IRuntimeService>().InternalContextSwitchService;
return(switchService.With <JavaScriptValue>(() =>
{
if (source.JSSource.IsValid)
{
return source.JSSource;
}
switch (source.BufferSource)
{
case SharedBufferSourceEnum.CreateByJavascript:
throw new InvalidOperationException("invalid source array buffer"); //create by javascript should already have JavaScriptValue assigned
case SharedBufferSourceEnum.CreateInJavascript:
{
JavaScriptValue result = JavaScriptValue.CreateArrayBuffer((uint)source.Size);
source.SetJSSource(result, switchService); //hold the varient
var data = JavaScriptValue.GetArrayBufferStorage(result, out uint bufferSize);
source.InitWindow(data, false);
source.InitBeforeConvert(source.Buffer);
return result;
}
case SharedBufferSourceEnum.CreateByDotnet:
case SharedBufferSourceEnum.CreateByExternal:
{
var result = JavaScriptValue.CreateExternalArrayBuffer(source.Buffer.Handle, (uint)source.Buffer.ByteLength, null, IntPtr.Zero); //do not handle GC callback, user should control the varient life cycle
source.SetJSSource(result, switchService); //hold the varient
return result;
}
default:
throw new ArgumentOutOfRangeException("Invalid BufferSource property in JSArryBuffer object");
}
}
));
}
