protected string _propName; // name of the property in the parent control
protected override void Initialize()
{
var netRef = DotNetObjectRef.Create(this);
var events = GetEventNames();
_jsRef = Invoke <string>("initMarkupProperty", netRef, _host, _propName, _className, _props, events);
}
/// <summary>
/// Creates a new instance of <see cref="DotNetStaticClickHandler"/>
/// </summary>
/// <param name="clickHandler">The delegate for a click handler.</param>
public DotNetInstanceClickHandler(InstanceClickHandler clickHandler)
{
if (clickHandler == null)
{
throw new ArgumentNullException(nameof(clickHandler));
}
// the method needs to be public
if (!clickHandler.Method.IsPublic)
{
throw new ArgumentException("The click handler needs to be public", nameof(clickHandler));
}
// the method needs to have the attribute JSInvokable
var isJsInvokable = clickHandler
.Method
.CustomAttributes.Any(data => data.AttributeType == typeof(JSInvokableAttribute));
if (!isJsInvokable)
{
throw new ArgumentException("The passed in method must have the 'JSInvokable' attribute",
nameof(clickHandler));
}
//AssemblyName = assembly.GetName().Name;
// clickHandler.Method.DeclaringType.Assembly.GetName().Name;
InstanceRef = DotNetObjectRef.Create(clickHandler.Target);
MethodName = clickHandler.Method.Name;
}
public static Dictionary <string, DotNetObjectRef <TestDTO> > ReturnDotNetObjectByRef()
{
return(new Dictionary <string, DotNetObjectRef <TestDTO> >
{
{ "Some sync instance", DotNetObjectRef.Create(new TestDTO(1000)) }
});
}
public Task CallHelloHelperSayHello(string name)
{
// sayHello is implemented in wwwroot/exampleJsInterop.js
return(_jsRuntime.InvokeAsync <object>(
"exampleJsFunctions.sayHello",
DotNetObjectRef.Create(new HelloHelper(name))));
}
/////////////////////////////////////////////////////////
#region initialize
protected override void Initialize()
{
var netRef = DotNetObjectRef.Create(this);
var events = GetEventNames();
_jsRef = Invoke <string>("initCollectionView", netRef, _host, _props, events);
}
public void OnClose(Func <Exception, Task> callback)
{
this.closeCallback = new HubCloseCallback(callback);
this.runtime.InvokeSync <object>(ON_CLOSE_METHOD,
this.InternalConnectionId,
DotNetObjectRef.Create(this.closeCallback));
}
public void RegisterJsEvents()
{
foreach (var item in listDragTarget)
{
BvgJsInterop.HandleDrop(item.ElementID, item.ID, DotNetObjectRef.Create(classForJS));
}
}
protected DotNetObjectRef <T> CreateDotNetObjectRef <T>(T value) where T : class
{
lock (CreateDotNetObjectRefSyncObj)
{
JSRuntime.SetCurrentJSRuntime(jsRuntime);
return(DotNetObjectRef.Create(value));
}
}
private DotNetObjectRef <SpeechSynthesis> GetObjectRef()
{
if (_ObjectRefOfThis == null)
{
_ObjectRefOfThis = DotNetObjectRef.Create(this);
}
return(_ObjectRefOfThis);
}
public static async Task <Dictionary <string, DotNetObjectRef <TestDTO> > > ReturnDotNetObjectByRefAsync()
{
await Task.Yield();
return(new Dictionary <string, DotNetObjectRef <TestDTO> >
{
{ "Some async instance", DotNetObjectRef.Create(new TestDTO(1001)) }
});
}
// TODO: Find out a more smart way to register to global connect/disconnect events from the WebUSB API regardless if there are subscribers to the events.
public async Task Initialize()
{
if (!this._initialized)
{
await this.JSRuntime.InvokeAsync <object>(REGISTER_USB_METHOD, DotNetObjectRef.Create(this));
this._initialized = true;
}
}
public HubConnection(IJSRuntime runtime, HttpConnectionOptions options)
{
this.runtime = runtime;
this.Options = options;
this.InternalConnectionId = Guid.NewGuid().ToString();
runtime.InvokeSync <object>(CREATE_CONNECTION_METHOD,
this.InternalConnectionId,
DotNetObjectRef.Create(this.Options));
}
internal DotNetObjectRef <SpeechSynthesisUtterance> GetObjectRef()
{
_ObjectRefCounter++;
if (_ObjectRefCounter == 1)
{
_ObjectRef = DotNetObjectRef.Create(this);
}
return(_ObjectRef);
}
public async Task InitAsync()
{
Logger.LogDebug("Init JsonRequestHandler");
const string InitializeJavaScriptInteropName = "InitializeJavaScriptInterop";
Logger.LogDebug(InitializeJavaScriptInteropName);
Microsoft.JSInterop.JSRuntime.SetCurrentJSRuntime(JSRuntime);
await JSRuntime.InvokeAsync <object>(InitializeJavaScriptInteropName, DotNetObjectRef.Create(this));
}
public Task <string> GetTokenAsync()
{
//return _jsRuntime.InvokeAsync<object>("B2CService.login");
return(_jsRuntime.InvokeAsync <string>("B2CService.login", DotNetObjectRef.Create(this)));
//var token = await _jsRuntime.InvokeAsync<object>("B2CService.login");
////return _jsRuntime.InvokeAsync<string>("myPromiseFn");
//return token.ToString();
}
public Task Read_Throws_IfJsonContainsUnknownContent() => WithJSRuntime(_ =>
{
// Arrange
var dotNetObjectRef = DotNetObjectRef.Create(new TestModel());
var json = "{\"foo\":2}";
// Act & Assert
var ex = Assert.Throws <JsonException>(() => JsonSerializer.Deserialize <DotNetObjectRef <TestModel> >(json));
Assert.Equal("Unexcepted JSON property foo.", ex.Message);
});
public LocationService(IMediator mediator, IConfiguration configuration, IJSRuntime jsRuntime)
{
Mediator = mediator;
BingKey = configuration["bing"];
JS = jsRuntime;
lock (Lock)
{
JSRuntime.SetCurrentJSRuntime(jsRuntime);
Ref = DotNetObjectRef.Create(this);
}
}
public Task Read_Throws_IfJsonIsMissingDotNetObjectProperty() => WithJSRuntime(_ =>
{
// Arrange
var dotNetObjectRef = DotNetObjectRef.Create(new TestModel());
var json = "{}";
// Act & Assert
var ex = Assert.Throws <JsonException>(() => JsonSerializer.Deserialize <DotNetObjectRef <TestModel> >(json));
Assert.Equal("Required property __dotNetObject not found.", ex.Message);
});
public async Task CloseSSEAsync()
{
try
{
await _jsRuntime.InvokeAsync <object>(
"BlazorSignalR.ServerSentEventsTransport.CloseConnection", DotNetObjectRef.Create(this));
}
catch (Exception e)
{
_logger.LogError($"Failed to stop SSE {e}");
}
}
public Task Read_Throws_IfDotNetObjectIdAppearsMultipleTimes() => WithJSRuntime(_ =>
{
// Arrange
var input = new TestModel();
var dotNetObjectRef = DotNetObjectRef.Create(input);
var objectId = dotNetObjectRef.ObjectId;
var json = $"{{\"__dotNetObject\":{objectId},\"__dotNetObject\":{objectId}}}";
// Act & Assert
var ex = Record.Exception(() => JsonSerializer.Deserialize <DotNetObjectRef <TestModel> >(json));
Assert.IsAssignableFrom <JsonException>(ex);
});
public async Task CloseWebSocketAsync()
{
Log.ClosingWebSocket(_logger);
try
{
await _jsRuntime.InvokeAsync <object>(
"BlazorSignalR.WebSocketsTransport.CloseConnection", DotNetObjectRef.Create(this));
}
catch (Exception e)
{
Log.ClosingWebSocketFailed(_logger, e);
}
}
public InstanceMethodOutput InstanceMethod(InstanceMethodInput input)
{
// This method shows we can pass in values marshalled both as JSON (the dict itself)
// and by ref (the incoming dtoByRef), plus that we can return values marshalled as
// JSON (the returned dictionary) and by ref (the outgoingByRef value)
return(new InstanceMethodOutput
{
ThisTypeName = GetType().Name,
StringValueUpper = input.StringValue.ToUpperInvariant(),
IncomingByRef = input.DTOByRef.Value.GetNonSerializedValue(),
OutgoingByRef = DotNetObjectRef.Create(new TestDTO(1234)),
});
}
public Task NotifiesAssociatedJsRuntimeOfDisposal() => WithJSRuntime(jsRuntime =>
{
// Arrange
var objRef = DotNetObjectRef.Create(new object());
var trackingId = objRef.__dotNetObject;
// Act
objRef.Dispose();
// Assert
var ex = Assert.Throws <ArgumentException>(() => jsRuntime.ObjectRefManager.FindDotNetObject(trackingId));
Assert.StartsWith("There is no tracked object with id '1'.", ex.Message);
});
internal void RegisterHandle(string methodName, HubMethodCallback callback)
{
if (this.callbacks.TryGetValue(methodName, out var methodHandlers))
{
methodHandlers[callback.Id] = callback;
}
else
{
this.callbacks[methodName] = new Dictionary <string, HubMethodCallback>
{
{ callback.Id, callback }
};
}
this.runtime.InvokeSync <object>(ON_METHOD, this.InternalConnectionId, DotNetObjectRef.Create(callback));
}
public Task Read_ReadsJson() => WithJSRuntime(_ =>
{
// Arrange
var input = new TestModel();
var dotNetObjectRef = DotNetObjectRef.Create(input);
var objectId = dotNetObjectRef.ObjectId;
var json = $"{{\"__dotNetObject\":{objectId}}}";
// Act
var deserialized = JsonSerializer.Deserialize <DotNetObjectRef <TestModel> >(json);
// Assert
Assert.Same(input, deserialized.Value);
Assert.Equal(objectId, deserialized.ObjectId);
});
/// <summary>
/// Creates a new instance of <see cref="DotNetInstanceHoverHandler"/>
/// </summary>
/// <param name="legendItemOnHoverHandler">The delegate for a hover handler</param>
public DotNetInstanceHoverHandler(LegendItemOnHover legendItemOnHoverHandler)
{
// Check for null
ArgValidation.AssertNotNullOrEmpty(nameof(legendItemOnHoverHandler), legendItemOnHoverHandler);
// Check for the method to be public and static
ArgValidation.AssertIsPublic(legendItemOnHoverHandler.Method);
// Check for the JsInvokable attribute
ArgValidation.AssertHasCustomAttribute(legendItemOnHoverHandler.Method, typeof(JSInvokableAttribute));
// The parameters and return type is taken care of by the delegate's definition
InstanceRef = DotNetObjectRef.Create(legendItemOnHoverHandler.Target);
MethodName = legendItemOnHoverHandler.Method.Name;
}
public Task Read_ReturnsTheCorrectInstance() => WithJSRuntime(_ =>
{
// Arrange
// Track a few instances and verify that the deserialized value returns the correct value.
var instance1 = new TestModel();
var instance2 = new TestModel();
var ref1 = DotNetObjectRef.Create(instance1);
var ref2 = DotNetObjectRef.Create(instance2);
var json = $"[{{\"__dotNetObject\":{ref2.ObjectId}}},{{\"__dotNetObject\":{ref1.ObjectId}}}]";
// Act
var deserialized = JsonSerializer.Deserialize <DotNetObjectRef <TestModel>[]>(json);
// Assert
Assert.Same(instance2, deserialized[0].Value);
Assert.Same(instance1, deserialized[1].Value);
});
private async Task ProcessEventStream(string url, IDuplexPipe application, CancellationToken transportCtsToken)
{
Log.StartReceive(_logger);
try
{
// Creates a task to represent the SSE js processing
TaskCompletionSource <object> task = new TaskCompletionSource <object>();
_jsTask = task;
// Create connection
await _jsRuntime.InvokeAsync <object>(
"BlazorSignalR.ServerSentEventsTransport.CreateConnection", url, DotNetObjectRef.Create(this));
// If canceled, stop fake processing
transportCtsToken.Register(() => { task.SetCanceled(); });
// Wait until js side stops
await task.Task;
if (task.Task.IsCanceled)
{
Log.ReceiveCanceled(_logger);
}
}
catch (Exception ex)
{
_logger.LogDebug($"SSE JS Side error {ex.Message}");
_error = ex;
}
finally
{
_application.Output.Complete(_error);
Log.ReceiveStopped(_logger);
// Close JS side SSE
await CloseSSEAsync();
}
}
public async Task StartAsync(Uri url, TransferFormat transferFormat, CancellationToken cancellationToken)
{
if (url == null)
{
throw new ArgumentNullException(nameof(url));
}
if (transferFormat != TransferFormat.Binary && transferFormat != TransferFormat.Text)
{
throw new ArgumentException(
$"The '{transferFormat}' transfer format is not supported by this transport.",
nameof(transferFormat));
}
Log.StartTransport(_logger, transferFormat);
// Create connection
_startTask = new TaskCompletionSource <object>();
await _jsRuntime.InvokeAsync <object>(
"BlazorSignalR.WebSocketsTransport.CreateConnection", url.ToString(),
transferFormat == TransferFormat.Binary, DotNetObjectRef.Create(this));
await _startTask.Task;
_startTask = null;
Log.StartedTransport(_logger);
// Create the pipe pair (Application's writer is connected to Transport's reader, and vice versa)
PipeOptions options = ClientPipeOptions.DefaultOptions;
DuplexPipe.DuplexPipePair pair = DuplexPipe.CreateConnectionPair(options, options);
_transport = pair.Transport;
_application = pair.Application;
Running = ProcessSocketAsync();
}
public void SyncCallResultCanIncludeDotNetObjects()
{
// Arrange
var runtime = new TestJSInProcessRuntime
{
NextResultJson = "[{\"__dotNetObject\":2},{\"__dotNetObject\":1}]"
};
JSRuntime.SetCurrentJSRuntime(runtime);
var obj1 = new object();
var obj2 = new object();
// Act
var syncResult = runtime.Invoke <DotNetObjectRef <object>[]>(
"test identifier",
DotNetObjectRef.Create(obj1),
"some other arg",
DotNetObjectRef.Create(obj2));
var call = runtime.InvokeCalls.Single();
// Assert
Assert.Equal(new[] { obj2, obj1 }, syncResult.Select(r => r.Value));
}
