bugfix: enable onlive diagram update

Author: EnverOsmanov

README.md

@@ -0,0 +1,12 @@
+Chrome System Monitor
+=========
+Simple example of chrome application.
+
+## For developers
+To create unpacked application:
+
+```
+sbt
+chromeUnpackedFast
+````
+You can find result in `./target/chrome/unpacked-fast` folder.

src/main/scala/monitor/Timeline.scala

@@ -54,13 +54,17 @@ class Timeline[T](val sampleCount: Int, val sampleInterval: FiniteDuration)(fun:
     listeners -= listener
   }
 
-  private def tick(): Unit =
-    fun.foreach(addSample)
+  private def tick(): Future[Unit] = for {
+      sample <- fun
+      _ <- Future.traverse(addSample(sample))(_.toFuture)
+  } yield ()
 
 
   def start() = {
     if (intervalHandler.isEmpty)
       intervalHandler = Some(js.timers.setInterval(sampleInterval)(tick()))
+
+    this
   }
 
   def stop() = intervalHandler foreach js.timers.clearInterval

src/main/scala/monitor/modules/Memory.scala

@@ -25,17 +25,18 @@ object Memory extends Module {
 
   class Backend[T](scope: BackendScope[Timeline[T], _]) extends Listener[Timeline[T]] {
 
-    def update(timeline: Timeline[T]): CallbackTo[Unit] =
-      scope.forceUpdate
+    def update(timeline: Timeline[T]): CallbackTo[Unit] = {
+      println("Memory update")
 
+      scope.forceUpdate
+    }
   }
 
   val memoryTimeline = {
     val timeline = new Timeline[MemoryInfo](60, 1.second)(
       chrome.system.memory.Memory.getInfo
     )
     timeline.start()
-    timeline
   }
 
   val comp = ScalaComponent.builder[Timeline[MemoryInfo]]("Memory")