websockets

README.md

@@ -23,6 +23,7 @@ Features:
 * IME support (for Chinese, Japanese etc text input)
 * System clipboard (copy and paste) support
 * Show a system tray icon and menu (Windows only)
+* Non-blocking HTTP requests and WebSockets
 
 ### Documentation
 

examples/httprequest.nim

@@ -6,8 +6,9 @@ import windy
 
 # You can have many requests in-flight at the same time.
 
-# Calling startHttpRequest never fails. If there is any error, onError will
-# be called during the next pollEvents (or later).
+# Calling startHttpRequest never throws an exception.
+# If there is any error, onError will be called during
+# the next pollEvents (or later).
 
 let req = startHttpRequest("https://www.google.com")
 

examples/websocket.nim

@@ -0,0 +1,30 @@
+import windy
+
+# WebSockets do not block.
+
+# All callbacks are called on the main thread.
+
+# You can have many WebSockets open at the same time.
+
+# Calling openWebSocket never throws an exception.
+# If there is any error, onError will be called during
+# the next pollEvents (or later).
+
+let req = openWebSocket("wss://stream.pushbullet.com/websocket/test")
+
+req.onError = proc(msg: string) =
+  echo "onError: " & msg
+
+req.onOpen = proc() =
+  echo "onOpen"
+
+req.onMessage = proc(msg: string, kind: WebSocketMessageKind) =
+  echo "onMessage: ", msg
+
+req.onClose = proc() =
+  echo "onClose"
+
+# Closing the window exits the demo
+let window = newWindow("Windy Basic", ivec2(1280, 800))
+while not window.closeRequested:
+  pollEvents()

src/windy/platforms/macos/objc.nim

@@ -157,12 +157,13 @@ template addClass*(className, superName: string, cls: Class, body: untyped) =
       discard class_addProtocol(cls, objc_getProtocol(protocolName.cstring))
 
     template addMethod(methodName: string, fn: untyped) =
-      discard class_addMethod(
-        cls,
-        s(methodName),
-        cast[IMP](fn),
-        "".cstring
-      )
+      {.cast(raises: []).}:
+        discard class_addMethod(
+          cls,
+          s(methodName),
+          cast[IMP](fn),
+          "".cstring
+        )
 
     body
 

src/windy/platforms/macos/platform.nim

@@ -638,7 +638,7 @@ proc resetCursorRects(self: ID, cmd: SEL): ID {.cdecl.} =
       cursor = NSCursor.alloc().initWithImage(image, hotspot)
     self.NSView.addCursorRect(self.NSView.bounds, cursor)
 
-proc init() =
+proc init() {.raises: [].} =
   if initialized:
     return