internal object GetExternalObjectFrom(JavaScriptValue value)
{
Debug.Assert(value != null);
IntPtr handlePtr;
var r = api_.JsGetExternalData(value.handle_, out handlePtr);
if (r == JsErrorCode.JsErrorInvalidArgument)
{
return(null);
}
Errors.ThrowIfIs(r);
GCHandle gcHandle = GCHandle.FromIntPtr(handlePtr);
ExternalObjectThunkData thunk = gcHandle.Target as ExternalObjectThunkData;
if (thunk == null)
{
return(null);
}
if (thunk.userDataStrong != null)
{
return(thunk.userDataStrong);
}
object result;
thunk.userData.TryGetTarget(out result);
return(result);
}
public JavaScriptObject CreateExternalObject(object externalData, JavaScriptExternalObjectFinalizeCallback finalizeCallback)
{
ExternalObjectThunkData thunk = new ExternalObjectThunkData()
{
callback = finalizeCallback, engine = new WeakReference <JavaScriptEngine>(this), userData = new WeakReference <object>(externalData),
};
GCHandle handle = GCHandle.Alloc(thunk);
externalObjects_.Add(thunk);
JavaScriptValueSafeHandle result;
Errors.ThrowIfIs(api_.JsCreateExternalObject(GCHandle.ToIntPtr(handle), FinalizerCallbackPtr, out result));
return(CreateObjectFromHandle(result));
}
internal object GetExternalObjectFrom(JavaScriptValue value)
{
Debug.Assert(value != null);
IntPtr handlePtr;
Errors.ThrowIfIs(api_.JsGetExternalData(value.handle_, out handlePtr));
GCHandle gcHandle = GCHandle.FromIntPtr(handlePtr);
ExternalObjectThunkData thunk = gcHandle.Target as ExternalObjectThunkData;
if (thunk == null)
{
return(null);
}
object result;
thunk.userData.TryGetTarget(out result);
return(result);
}
public JavaScriptObject CreateExternalObject(object externalData, JavaScriptExternalObjectFinalizeCallback finalizeCallback)
{
if (externalObjectsDict.TryGetValue(externalData, out var obj))
{
return(obj);
}
ExternalObjectThunkData thunk = new ExternalObjectThunkData()
{
callback = finalizeCallback, engine = engineWeakReference, userDataStrong = externalData, order = ++lastExternalObjectId /*, userData = new WeakReferenceStruct<object>(externalData),*/
};
GCHandle handle = GCHandle.Alloc(thunk);
strongGCHandles.Add(handle);
externalObjects_.Add(thunk);
JavaScriptValueSafeHandle result;
Errors.ThrowIfIs(api_.JsCreateExternalObject(GCHandle.ToIntPtr(handle), FinalizerCallbackPtr, out result));
obj = CreateObjectFromHandle(result);
externalObjectsDict.Add(externalData, obj);
return(obj);
}
public JavaScriptObject CreateExternalObject(object externalData, JavaScriptExternalObjectFinalizeCallback finalizeCallback)
{
ExternalObjectThunkData thunk = new ExternalObjectThunkData() { callback = finalizeCallback, engine = new WeakReference<JavaScriptEngine>(this), userData = new WeakReference<object>(externalData), };
GCHandle handle = GCHandle.Alloc(thunk);
externalObjects_.Add(thunk);
ClaimContext();
JavaScriptValueSafeHandle result;
Errors.ThrowIfIs(api_.JsCreateExternalObject(GCHandle.ToIntPtr(handle), NativeCallbackPtr, out result));
return CreateObjectFromHandle(result);
}
