diff --git a/dataforge-core/src/main/kotlin/hep/dataforge/context/Context.kt b/dataforge-core/src/main/kotlin/hep/dataforge/context/Context.kt
index 766d7b4..ece5f92 100644
--- a/dataforge-core/src/main/kotlin/hep/dataforge/context/Context.kt
+++ b/dataforge-core/src/main/kotlin/hep/dataforge/context/Context.kt
@@ -403,7 +403,7 @@ open class Context(
         get() = plugins[ExecutorPlugin::class] ?: parent?.executors ?: Global.executors
 
     override val coroutineContext: CoroutineContext
-        get() = this.executors.coroutineContext
+        get() = executors.coroutineContext
 
     companion object {
 
diff --git a/dataforge-core/src/main/kotlin/hep/dataforge/context/ExecutorPlugin.kt b/dataforge-core/src/main/kotlin/hep/dataforge/context/ExecutorPlugin.kt
index eb9896c..e388c44 100644
--- a/dataforge-core/src/main/kotlin/hep/dataforge/context/ExecutorPlugin.kt
+++ b/dataforge-core/src/main/kotlin/hep/dataforge/context/ExecutorPlugin.kt
@@ -41,7 +41,7 @@ interface ExecutorPlugin : Plugin, CoroutineScope {
 
 @PluginDef(group = "hep.dataforge", name = "executor", support = true, info = "Executor plugin")
 class DefaultExecutorPlugin(meta: Meta = Meta.empty()) : BasicPlugin(meta), ExecutorPlugin {
-    private val executors = HashMap<Meta, ExecutorService>();
+    private val executors = HashMap<Meta, ExecutorService>()
 
     /**
      * Create a default executor that uses plugin meta
@@ -51,21 +51,16 @@ class DefaultExecutorPlugin(meta: Meta = Meta.empty()) : BasicPlugin(meta), Exec
         getExecutor(meta)
     }
 
-    override fun getExecutor(meta: Meta): ExecutorService {
-        synchronized(context) {
-            return executors.getOrPut(meta) {
-                val workerName = meta.getString("workerName", "worker");
-                val threads = meta.getInt("threads", Runtime.getRuntime().availableProcessors())
-                val factory = { pool: ForkJoinPool ->
-                    ForkJoinPool.defaultForkJoinWorkerThreadFactory.newThread(pool).apply {
-                        name = "${context.name}_$workerName-$poolIndex"
-                    }
-                }
-                ForkJoinPool(
-                        threads,
-                        factory, null, false)
+    @Synchronized
+    override fun getExecutor(meta: Meta): ExecutorService = executors.getOrPut(meta) {
+        val workerName = meta.getString("workerName", "worker")
+        val threads = meta.getInt("threads", Runtime.getRuntime().availableProcessors())
+        val factory = { pool: ForkJoinPool ->
+            ForkJoinPool.defaultForkJoinWorkerThreadFactory.newThread(pool).apply {
+                name = "${context.name}_$workerName-$poolIndex"
             }
         }
+        ForkJoinPool(threads, factory, null, false)
     }
 
     override val coroutineContext: CoroutineContext by lazy { defaultExecutor.asCoroutineDispatcher() }
diff --git a/dataforge-core/src/main/kotlin/hep/dataforge/io/envelopes/EnvelopeReader.kt b/dataforge-core/src/main/kotlin/hep/dataforge/io/envelopes/EnvelopeReader.kt
index 28f656c..a980ec2 100644
--- a/dataforge-core/src/main/kotlin/hep/dataforge/io/envelopes/EnvelopeReader.kt
+++ b/dataforge-core/src/main/kotlin/hep/dataforge/io/envelopes/EnvelopeReader.kt
@@ -45,9 +45,7 @@ interface EnvelopeReader {
     /**
      * Read the envelope from channel
      */
-    fun read(channel: ReadableByteChannel): Envelope {
-        return read(Channels.newInputStream(channel))
-    }
+    fun read(channel: ReadableByteChannel): Envelope = read(Channels.newInputStream(channel))
 
     /**
      * Read the envelope from buffer (could produce lazy envelope)
@@ -59,9 +57,7 @@ interface EnvelopeReader {
     /**
      * Read the envelope from NIO file (could produce lazy envelope)
      */
-    fun read(file: Path): Envelope {
-        return Files.newByteChannel(file, READ).use { read(it) }
-    }
+    fun read(file: Path): Envelope = Files.newByteChannel(file, READ).use { read(it) }
 
     companion object {
 
diff --git a/dataforge-core/src/main/kotlin/hep/dataforge/values/Value.kt b/dataforge-core/src/main/kotlin/hep/dataforge/values/Value.kt
index d725e95..8eff65f 100644
--- a/dataforge-core/src/main/kotlin/hep/dataforge/values/Value.kt
+++ b/dataforge-core/src/main/kotlin/hep/dataforge/values/Value.kt
@@ -160,21 +160,19 @@ interface Value : Serializable, Comparable<Value> {
          * @param obj a [Object] object.
          * @return a [Value] object.
          */
-        fun of(value: Any?): Value {
-            return when (value) {
-                null -> Value.NULL
-                is Value -> value
-                is Number -> NumberValue(value)
-                is Instant -> TimeValue(value)
-                is LocalDateTime -> TimeValue(value)
-                is Boolean -> BooleanValue.ofBoolean(value)
-                is String -> StringValue(value)
-                is Collection<Any?> -> Value.of(value)
-                is Stream<*> -> Value.of(value.toList())
-                is Array<*> -> Value.of(value.map(::of))
-                is Enum<*> -> StringValue(value.name)
-                else -> StringValue(value.toString())
-            }
+        fun of(value: Any?): Value = when (value) {
+            null -> NULL
+            is Value -> value
+            is Number -> NumberValue(value)
+            is Instant -> TimeValue(value)
+            is LocalDateTime -> TimeValue(value)
+            is Boolean -> BooleanValue.ofBoolean(value)
+            is String -> StringValue(value)
+            is Collection<Any?> -> of(value)
+            is Stream<*> -> of(value.toList())
+            is Array<*> -> of(value.map(::of))
+            is Enum<*> -> StringValue(value.name)
+            else -> StringValue(value.toString())
         }
     }
 }
diff --git a/dataforge-gui/src/main/kotlin/hep/dataforge/fx/KodexFX.kt b/dataforge-gui/src/main/kotlin/hep/dataforge/fx/KodexFX.kt
index dd3b322..03a873d 100644
--- a/dataforge-gui/src/main/kotlin/hep/dataforge/fx/KodexFX.kt
+++ b/dataforge-gui/src/main/kotlin/hep/dataforge/fx/KodexFX.kt
@@ -1,5 +1,6 @@
 package hep.dataforge.fx
 
+import hep.dataforge.context.Context
 import hep.dataforge.context.Global
 import hep.dataforge.goals.Coal
 import hep.dataforge.goals.Goal
@@ -14,13 +15,13 @@ import javafx.scene.image.ImageView
 import javafx.scene.layout.Region
 import javafx.scene.paint.Color
 import javafx.stage.Stage
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.plus
 import tornadofx.*
 import java.util.*
 import java.util.concurrent.Executor
 import java.util.function.BiConsumer
-import kotlin.collections.HashMap
+import kotlin.coroutines.CoroutineContext
+import kotlin.coroutines.EmptyCoroutineContext
 
 val dfIcon: Image = Image(Global::class.java.getResourceAsStream("/img/df.png"))
 val dfIconView = ImageView(dfIcon)
@@ -73,9 +74,14 @@ private fun removeMonitor(component: UIComponent, id: String) {
     }
 }
 
-fun <R> UIComponent.runGoal(id: String, scope: CoroutineScope = GlobalScope, block: suspend GoalMonitor.() -> R): Coal<R> {
+fun <R> UIComponent.runGoal(
+    context: Context,
+    id: String,
+    coroutineContext: CoroutineContext = EmptyCoroutineContext,
+    block: suspend GoalMonitor.() -> R,
+): Coal<R> {
     val monitor = getMonitor(id);
-    return Coal(scope, Collections.emptyList(), id) {
+    return Coal(context + coroutineContext, Collections.emptyList(), id) {
         monitor.progress = -1.0
         block(monitor).also {
             monitor.progress = 1.0
@@ -121,9 +127,9 @@ fun addWindowResizeListener(component: Region, action: Runnable) {
 
 fun colorToString(color: Color): String {
     return String.format("#%02X%02X%02X",
-            (color.red * 255).toInt(),
-            (color.green * 255).toInt(),
-            (color.blue * 255).toInt())
+        (color.red * 255).toInt(),
+        (color.green * 255).toInt(),
+        (color.blue * 255).toInt())
 }
 
 /**
@@ -144,9 +150,10 @@ fun runNow(r: Runnable) {
  * A display window that could be toggled
  */
 class ToggleUIComponent(
-        val component: UIComponent,
-        val owner: Node,
-        val toggle: BooleanProperty) {
+    val component: UIComponent,
+    val owner: Node,
+    val toggle: BooleanProperty,
+) {
     val stage: Stage by lazy {
         val res = component.modalStage ?: component.openWindow(owner = owner.scene.window)
         ?: throw RuntimeException("Can'topen window for $component")
diff --git a/dataforge-storage/src/main/kotlin/hep/dataforge/storage/Storage.kt b/dataforge-storage/src/main/kotlin/hep/dataforge/storage/Storage.kt
index 0bc5071..e9fec74 100644
--- a/dataforge-storage/src/main/kotlin/hep/dataforge/storage/Storage.kt
+++ b/dataforge-storage/src/main/kotlin/hep/dataforge/storage/Storage.kt
@@ -62,6 +62,10 @@ interface StorageElement : Named, Metoid, Provider, ContextAware, AutoConnectibl
             parent?.fullName?.plus(name) ?: Name.ofSingle(name)
         }
 
+    override fun close() {
+        //DO nothing
+    }
+
     companion object {
         const val STORAGE_TARGET = "storage"
     }
@@ -75,14 +79,14 @@ interface Storage : StorageElement {
     /**
      * Top level children of this storage
      */
-    val children: Collection<StorageElement>
+    fun getChildren(): Collection<StorageElement>
 
     /**
      * Names of direct children for provider
      */
     @get:ProvidesNames(STORAGE_TARGET)
     val childrenNames: Collection<String>
-        get() = runBlocking { children.map { it.name } }
+        get() = runBlocking { getChildren().map { it.name } }
 
     /**
      * Get storage element (name notation for recursive calls). Null if not present
@@ -99,7 +103,7 @@ interface Storage : StorageElement {
 
     operator fun get(name: Name): StorageElement? {
         return if (name.length == 1) {
-            children.find { it.name == name.unescaped }
+            getChildren().find { it.name == name.unescaped }
         } else {
             (get(name.first) as Storage?)?.get(name.cutFirst())
         }
@@ -107,14 +111,6 @@ interface Storage : StorageElement {
 
 
     override fun getDefaultTarget(): String = STORAGE_TARGET
-
-    /**
-     * By default closes all children on close. If overridden, children should be closed before parent.
-     */
-
-    override fun close() {
-        children.forEach { it.close() }
-    }
 }
 
 /**
@@ -202,7 +198,5 @@ interface StorageElementType : Named {
     fun create(context: Context, meta: Meta, parent: StorageElement? = null): StorageElement
 
 
-    fun create(parent: StorageElement, meta: Meta): StorageElement {
-        return create(parent.context, meta, parent)
-    }
+    fun create(parent: StorageElement, meta: Meta): StorageElement = create(parent.context, meta, parent)
 }
\ No newline at end of file
diff --git a/dataforge-storage/src/main/kotlin/hep/dataforge/storage/StorageConnection.kt b/dataforge-storage/src/main/kotlin/hep/dataforge/storage/StorageConnection.kt
index aecccde..3ada89e 100644
--- a/dataforge-storage/src/main/kotlin/hep/dataforge/storage/StorageConnection.kt
+++ b/dataforge-storage/src/main/kotlin/hep/dataforge/storage/StorageConnection.kt
@@ -50,7 +50,6 @@ class StorageConnection(storageFactory: () -> MutableStorage) : Connection, Cont
         isOpen = true
     }
 
-    @Throws(Exception::class)
     override fun close() {
         if (isOpen) {
             storage.close()
diff --git a/dataforge-storage/src/main/kotlin/hep/dataforge/storage/StorageManager.kt b/dataforge-storage/src/main/kotlin/hep/dataforge/storage/StorageManager.kt
index 4ae730c..7744ff8 100644
--- a/dataforge-storage/src/main/kotlin/hep/dataforge/storage/StorageManager.kt
+++ b/dataforge-storage/src/main/kotlin/hep/dataforge/storage/StorageManager.kt
@@ -27,7 +27,6 @@ import hep.dataforge.meta.buildMeta
 import hep.dataforge.nullable
 import hep.dataforge.providers.Provides
 import hep.dataforge.providers.ProvidesNames
-import kotlin.streams.toList
 
 
 @PluginDef(name = "storage", group = "hep.dataforge", info = "Dataforge root storage plugin")
@@ -37,7 +36,7 @@ class StorageManager : BasicPlugin(), MutableStorage {
     private val _connectionHelper = ConnectionHelper(this)
     private val _children = HashMap<String, StorageElement>()
 
-    override val children get() = _children.values
+    override fun getChildren() = _children.values
 
     override fun getConnectionHelper(): ConnectionHelper = _connectionHelper
 
diff --git a/dataforge-storage/src/main/kotlin/hep/dataforge/storage/files/FileStorage.kt b/dataforge-storage/src/main/kotlin/hep/dataforge/storage/files/FileStorage.kt
index a38e0e8..541aa39 100644
--- a/dataforge-storage/src/main/kotlin/hep/dataforge/storage/files/FileStorage.kt
+++ b/dataforge-storage/src/main/kotlin/hep/dataforge/storage/files/FileStorage.kt
@@ -20,7 +20,6 @@ import hep.dataforge.Named
 import hep.dataforge.asName
 import hep.dataforge.connections.ConnectionHelper
 import hep.dataforge.context.Context
-import hep.dataforge.context.launch
 import hep.dataforge.description.ValueDef
 import hep.dataforge.description.ValueDefs
 import hep.dataforge.io.envelopes.Envelope
@@ -33,8 +32,8 @@ import hep.dataforge.storage.MutableStorage
 import hep.dataforge.storage.StorageElement
 import hep.dataforge.storage.StorageElementType
 import hep.dataforge.storage.StorageManager
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.joinAll
+import kotlinx.coroutines.async
+import kotlinx.coroutines.awaitAll
 import kotlinx.coroutines.runBlocking
 import java.nio.file.*
 import kotlin.streams.asSequence
@@ -74,17 +73,17 @@ class FileStorage(
 
     override fun getConnectionHelper(): ConnectionHelper = _connectionHelper
 
-    private var isInitialized = false
-    private val _children = HashMap<Path, StorageElement>()
-
-
-    override val children: Collection<StorageElement>
-        get() = runBlocking(Dispatchers.IO) {
-            if (!isInitialized) {
-                refresh()
+    override fun getChildren(): Collection<StorageElement> = runBlocking {
+        Files.list(path).toList().map { path ->
+            async{
+                type.read(context, path, this@FileStorage).also {
+                    if(it == null){
+                        logger.warn("Can't read $path")
+                    }
+                }
             }
-            _children.values
-        }
+        }.awaitAll().filterNotNull()
+    }
 
 
     override fun resolveType(meta: Meta): StorageElementType? {
@@ -105,33 +104,8 @@ class FileStorage(
 
 //TODO actually watch for file change
 
-    override fun create(meta: Meta): StorageElement {
-        val path = path.resolve(meta.getString("path", meta.getString("name")))
-        return _children.getOrPut(path) {
-            resolveType(meta)
-                ?.create(this, meta)
-                ?: error("Can't resolve storage element type.")
-        }
-    }
-
-    /**
-     * Manually refresh storage state
-     */
-    suspend fun refresh() {
-        //Remove non-existent entries
-        _children.keys.filter { !Files.exists(it) }.forEach { _children.remove(it) }
-
-        //update existing entries if needed
-        Files.list(path).map { path ->
-            launch {
-                if (!_children.contains(path)) {
-                    type.read(context, path, this@FileStorage)?.let { _children[path] = it }
-                        ?: logger.debug("Could not resolve type for $path in $this")
-                }
-            }
-        }.toList().joinAll()
-        isInitialized = true
-    }
+    override fun create(meta: Meta): StorageElement =
+        resolveType(meta)?.create(this, meta) ?: error("Can't resolve storage element type.")
 
     companion object {
 
@@ -161,7 +135,7 @@ class FileStorage(
             return file.fileName.toString().substringBeforeLast(".")
         }
 
-        val directory = FileStorage.Directory()
+        val directory = Directory()
     }
 
     open class Directory : FileStorageElementType {
@@ -208,7 +182,7 @@ class FileStorage(
                     null
                 }
             } else {
-                //Otherwise delegate to the type
+                //Otherwise, delegate to the type
                 type.read(context, path, parent)
             }.also {
                 if (it != null && parent == null) {
diff --git a/numass-core/src/main/kotlin/inr/numass/data/storage/NumassDataFactory.kt b/numass-core/src/main/kotlin/inr/numass/data/storage/NumassDataFactory.kt
index 89d8d50..345eafc 100644
--- a/numass-core/src/main/kotlin/inr/numass/data/storage/NumassDataFactory.kt
+++ b/numass-core/src/main/kotlin/inr/numass/data/storage/NumassDataFactory.kt
@@ -22,7 +22,7 @@ class NumassDataFactory : DataFactory<NumassSet>(NumassSet::class.java) {
      */
     private fun Storage.sequence(prefix: Name = Name.empty()): Sequence<Pair<Name, StorageElement>> {
         return sequence {
-            runBlocking { children }.forEach {
+            runBlocking { getChildren() }.forEach {
                 val newName = prefix + it.name
                 yield(Pair(newName, it))
                 if (it is Storage) {
diff --git a/numass-main/src/main/kotlin/inr/numass/scripts/utils/ScanTree.kt b/numass-main/src/main/kotlin/inr/numass/scripts/utils/ScanTree.kt
index a8a0efe..738529a 100644
--- a/numass-main/src/main/kotlin/inr/numass/scripts/utils/ScanTree.kt
+++ b/numass-main/src/main/kotlin/inr/numass/scripts/utils/ScanTree.kt
@@ -20,7 +20,7 @@ private suspend fun createSummaryNode(storage: Storage): MetaBuilder {
             .setValue("name", storage.name)
             .setValue("path", storage.fullName)
 
-    storage.children.forEach { element ->
+    storage.getChildren().forEach { element ->
         if(element is Storage && element.name.startsWith("Fill")){
             builder.putNode(createSummaryNode(element))
         } else if(element is NumassDataLoader){
diff --git a/numass-main/src/main/kotlin/inr/numass/subthreshold/Threshold.kt b/numass-main/src/main/kotlin/inr/numass/subthreshold/Threshold.kt
index ddd1ace..0ad196a 100644
--- a/numass-main/src/main/kotlin/inr/numass/subthreshold/Threshold.kt
+++ b/numass-main/src/main/kotlin/inr/numass/subthreshold/Threshold.kt
@@ -43,7 +43,7 @@ object Threshold {
         fun Storage.loaders(): Sequence<NumassDataLoader> {
             return sequence<NumassDataLoader> {
                 print("Reading ${this@loaders.fullName}")
-                runBlocking { this@loaders.children }.forEach {
+                runBlocking { this@loaders.getChildren() }.forEach {
                     if (it is NumassDataLoader) {
                         yield(it)
                     } else if (it is Storage) {
diff --git a/numass-viewer/src/main/kotlin/inr/numass/viewer/AmplitudeView.kt b/numass-viewer/src/main/kotlin/inr/numass/viewer/AmplitudeView.kt
index 440dfa6..d0a4993 100644
--- a/numass-viewer/src/main/kotlin/inr/numass/viewer/AmplitudeView.kt
+++ b/numass-viewer/src/main/kotlin/inr/numass/viewer/AmplitudeView.kt
@@ -25,6 +25,7 @@ import javafx.collections.ObservableMap
 import javafx.scene.control.CheckBox
 import javafx.scene.control.ChoiceBox
 import javafx.scene.image.ImageView
+import kotlinx.coroutines.Dispatchers
 import tornadofx.*
 
 class AmplitudeView : View(title = "Numass amplitude spectrum plot", icon = ImageView(dfIcon)) {
@@ -127,7 +128,7 @@ class AmplitudeView : View(title = "Numass amplitude spectrum plot", icon = Imag
     private fun invalidate() {
         data.forEach { (key, point) ->
             plots.getOrPut(key) {
-                runGoal<Plottable>("loadAmplitudeSpectrum_$key") {
+                runGoal<Plottable>(app.context, "loadAmplitudeSpectrum_$key", Dispatchers.IO) {
                     val valueAxis = if (normalize) {
                         NumassAnalyzer.COUNT_RATE_KEY
                     } else {
diff --git a/numass-viewer/src/main/kotlin/inr/numass/viewer/HVView.kt b/numass-viewer/src/main/kotlin/inr/numass/viewer/HVView.kt
index 1bd2b2f..86b2082 100644
--- a/numass-viewer/src/main/kotlin/inr/numass/viewer/HVView.kt
+++ b/numass-viewer/src/main/kotlin/inr/numass/viewer/HVView.kt
@@ -15,6 +15,7 @@ import javafx.collections.FXCollections
 import javafx.collections.MapChangeListener
 import javafx.collections.ObservableMap
 import javafx.scene.image.ImageView
+import kotlinx.coroutines.Dispatchers
 import tornadofx.*
 
 
@@ -54,7 +55,7 @@ class HVView : View(title = "High voltage time plot", icon = ImageView(dfIcon))
             }
             if (change.wasAdded()) {
                 runLater { container.progress = -1.0 }
-                runGoal("hvData[${change.key}]") {
+                runGoal(app.context,"hvData[${change.key}]", Dispatchers.IO) {
                     change.valueAdded.getHvData()
                 } ui { table ->
                     if (table != null) {
diff --git a/numass-viewer/src/main/kotlin/inr/numass/viewer/MainView.kt b/numass-viewer/src/main/kotlin/inr/numass/viewer/MainView.kt
index 10f55fb..fa88c13 100644
--- a/numass-viewer/src/main/kotlin/inr/numass/viewer/MainView.kt
+++ b/numass-viewer/src/main/kotlin/inr/numass/viewer/MainView.kt
@@ -17,7 +17,10 @@ import javafx.scene.layout.Priority
 import javafx.scene.text.Font
 import javafx.stage.DirectoryChooser
 import javafx.stage.FileChooser
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.javafx.JavaFx
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import org.controlsfx.control.StatusBar
 import tornadofx.*
 import java.io.File
@@ -28,6 +31,8 @@ class MainView : View(title = "Numass viewer", icon = dfIconView) {
 
     private val pointCache by inject<PointCache>()
 
+    val storageView by inject<StorageView>()
+
     private val statusBar = StatusBar()
 //    private val logFragment = LogFragment().apply {
 //        addLogHandler(context.logger)
@@ -140,7 +145,7 @@ class MainView : View(title = "Numass viewer", icon = dfIconView) {
         if (Files.isDirectory(path)) {
             if (Files.exists(path.resolve(NumassDataLoader.META_FRAGMENT_NAME))) {
                 //build set view
-                runGoal("viewer.load.set[$path]") {
+                runGoal(app.context, "viewer.load.set[$path]", Dispatchers.IO) {
                     title = "Load set ($path)"
                     message = "Building numass set..."
                     NumassDataLoader(app.context, null, path.fileName.toString(), path)
@@ -158,12 +163,12 @@ class MainView : View(title = "Numass viewer", icon = dfIconView) {
                 }
             } else {
                 //build storage
-                runGoal("viewer.load.storage[$path]") {
-                    title = "Load storage ($path)"
-                    message = "Building numass storage tree..."
-                    NumassDirectory.INSTANCE.read(app.context, path)
-                } ui {
-                    contentView = StorageView(it as Storage)
+                app.context.launch {
+                    val storageElement = NumassDirectory.INSTANCE.read(app.context, path) as Storage
+                    withContext(Dispatchers.JavaFx){
+                        contentView = storageView
+                        storageView.storageProperty.set(storageElement)
+                    }
                 }
             }
         } else {
diff --git a/numass-viewer/src/main/kotlin/inr/numass/viewer/PointCache.kt b/numass-viewer/src/main/kotlin/inr/numass/viewer/PointCache.kt
index 22549d3..e31bf66 100644
--- a/numass-viewer/src/main/kotlin/inr/numass/viewer/PointCache.kt
+++ b/numass-viewer/src/main/kotlin/inr/numass/viewer/PointCache.kt
@@ -62,37 +62,3 @@ class PointCache : Controller() {
         cache.clear()
     }
 }
-
-
-//class CachedSet(set: NumassSet, context: Context)  {
-//    override val points: ObservableList<CachedPoint> by lazy {
-//        set.points.map { CachedPoint(it, context) }.toObservable()
-//    }
-//    init {
-//        var watcher: WatchService? = null
-//
-//        if (set is NumassDataLoader) {
-//            context.launch(Dispatchers.IO) {
-//                watcher = set.path.fileSystem.newWatchService()
-//                try {
-//                    val key: WatchKey = set.path.register(watcher!!, ENTRY_CREATE)
-//                    while (true) {
-//                        key.pollEvents().forEach { event ->
-//                            if (event.kind() == ENTRY_CREATE) {
-//                                val path: Path = event.context() as Path
-//                                if (path.fileName.toString().startsWith(NumassDataLoader.POINT_FRAGMENT_NAME)) {
-//                                    val envelope: Envelope = NumassEnvelopeType.infer(path)?.reader?.read(path)
-//                                        ?: kotlin.error("Can't read point file")
-//                                    val point = NumassDataUtils.read(envelope)
-//                                    points.add(CachedPoint(point, context))
-//                                }
-//                            }
-//                        }
-//                    }
-//                } catch (x: IOException) {
-//                    x.printStackTrace()
-//                }
-//            }
-//        }
-//    }
-//}
diff --git a/numass-viewer/src/main/kotlin/inr/numass/viewer/SlowControlView.kt b/numass-viewer/src/main/kotlin/inr/numass/viewer/SlowControlView.kt
index e030740..9d5d6fa 100644
--- a/numass-viewer/src/main/kotlin/inr/numass/viewer/SlowControlView.kt
+++ b/numass-viewer/src/main/kotlin/inr/numass/viewer/SlowControlView.kt
@@ -16,6 +16,7 @@ import javafx.collections.FXCollections
 import javafx.collections.MapChangeListener
 import javafx.collections.ObservableMap
 import javafx.scene.image.ImageView
+import kotlinx.coroutines.Dispatchers
 import tornadofx.*
 
 /**
@@ -43,7 +44,7 @@ class SlowControlView : View(title = "Numass slow control view", icon = ImageVie
                 plot.remove(change.key)
             }
             if (change.wasAdded()) {
-                runGoal("loadTable[${change.key}]") {
+                runGoal(app.context,"loadTable[${change.key}]", Dispatchers.IO) {
                     val plotData = getData(change.valueAdded)
                     val names = plotData.format.namesAsArray().filter { it != "timestamp" }
 
diff --git a/numass-viewer/src/main/kotlin/inr/numass/viewer/SpectrumView.kt b/numass-viewer/src/main/kotlin/inr/numass/viewer/SpectrumView.kt
index 95f1899..0c4fca1 100644
--- a/numass-viewer/src/main/kotlin/inr/numass/viewer/SpectrumView.kt
+++ b/numass-viewer/src/main/kotlin/inr/numass/viewer/SpectrumView.kt
@@ -3,13 +3,10 @@ package inr.numass.viewer
 import hep.dataforge.configure
 import hep.dataforge.fx.dfIcon
 import hep.dataforge.fx.plots.PlotContainer
-import hep.dataforge.fx.runGoal
-import hep.dataforge.fx.ui
 import hep.dataforge.names.Name
 import hep.dataforge.plots.data.DataPlot
 import hep.dataforge.plots.jfreechart.JFreeChartFrame
 import hep.dataforge.tables.Adapters
-import hep.dataforge.values.Values
 import inr.numass.data.analyzers.countInWindow
 import inr.numass.data.api.NumassSet
 import javafx.beans.property.SimpleIntegerProperty
@@ -20,6 +17,10 @@ import javafx.geometry.Insets
 import javafx.geometry.Orientation
 import javafx.scene.image.ImageView
 import javafx.util.converter.NumberStringConverter
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.javafx.JavaFx
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import org.controlsfx.control.RangeSlider
 import tornadofx.*
 import java.util.concurrent.atomic.AtomicInteger
@@ -123,13 +124,13 @@ class SpectrumView : View(title = "Numass spectrum plot", icon = ImageView(dfIco
             val plot: DataPlot =
                 frame.plots[Name.ofSingle(name)] as DataPlot? ?: DataPlot(name).apply { frame.add(this) }
 
-            runGoal("spectrumData[$name]") {
-                set.points.map {
+            app.context.launch {
+                val points = set.points.map {
                     pointCache.getCachedPoint("$name/${it.voltage}[${it.index}]", it)
                 }.map { cachedPoint ->
                     val count = cachedPoint.spectrum.await().countInWindow(loChannel.toShort(), upChannel.toShort())
                     val seconds = cachedPoint.length.toMillis() / 1000.0
-                    runLater {
+                    launch(Dispatchers.JavaFx) {
                         container.progress = progress.incrementAndGet().toDouble() / totalProgress
                     }
                     Adapters.buildXYDataPoint(
@@ -138,10 +139,10 @@ class SpectrumView : View(title = "Numass spectrum plot", icon = ImageView(dfIco
                         sqrt(count.toDouble()) / seconds
                     )
                 }
-            } ui { points: List<Values> ->
-                plot.fillData(points)
-                container.progress = 1.0
-                //spectrumExportButton.isDisable = false
+                withContext(Dispatchers.JavaFx) {
+                    plot.fillData(points)
+                    container.progress = 1.0
+                }
             }
         }
     }
diff --git a/numass-viewer/src/main/kotlin/inr/numass/viewer/StorageView.kt b/numass-viewer/src/main/kotlin/inr/numass/viewer/StorageView.kt
index 95c6760..bddfce3 100644
--- a/numass-viewer/src/main/kotlin/inr/numass/viewer/StorageView.kt
+++ b/numass-viewer/src/main/kotlin/inr/numass/viewer/StorageView.kt
@@ -6,19 +6,25 @@ import hep.dataforge.meta.Meta
 import hep.dataforge.meta.Metoid
 import hep.dataforge.names.AlphanumComparator
 import hep.dataforge.storage.Storage
+import hep.dataforge.storage.files.FileStorage
 import hep.dataforge.storage.files.FileTableLoader
 import hep.dataforge.storage.tables.TableLoader
 import inr.numass.data.api.NumassPoint
 import inr.numass.data.api.NumassSet
 import inr.numass.data.storage.NumassDataLoader
 import javafx.beans.property.SimpleBooleanProperty
+import javafx.beans.property.SimpleObjectProperty
 import javafx.collections.ObservableList
 import javafx.scene.control.ContextMenu
 import javafx.scene.control.TreeItem
 import tornadofx.*
+import java.nio.file.WatchService
 
 
-class StorageView(val storage: Storage) : View(title = "Numass storage", icon = dfIconView) {
+class StorageView : View(title = "Numass storage", icon = dfIconView) {
+
+    val storageProperty = SimpleObjectProperty<Storage>()
+    val storage by storageProperty
 
     private val pointCache by inject<PointCache>()
 
@@ -28,7 +34,11 @@ class StorageView(val storage: Storage) : View(title = "Numass storage", icon =
     private val hvView: HVView by inject()
     private val scView: SlowControlView by inject()
 
-    init {
+    private var watcher: WatchService? = null
+
+
+    fun clear() {
+        watcher?.close()
         ampView.clear()
         timeView.clear()
         spectrumView.clear()
@@ -81,7 +91,7 @@ class StorageView(val storage: Storage) : View(title = "Numass storage", icon =
         }
 
         fun getChildren(): ObservableList<Container>? = when (content) {
-            is Storage -> content.children.map {
+            is Storage -> content.getChildren().map {
                 buildContainer(it, this)
             }.sortedWith(Comparator.comparing({ it.id }, AlphanumComparator)).asObservable()
             is NumassSet -> content.points
@@ -90,6 +100,35 @@ class StorageView(val storage: Storage) : View(title = "Numass storage", icon =
                 .asObservable()
             else -> null
         }
+        /*
+                    is NumassDataLoader -> {
+                val res = content.points.sortedBy { it.index }.map { buildContainer(it, this) }.toObservable()
+                watchJob = app.context.launch(Dispatchers.IO) {
+                    val key: WatchKey = content.path.register(watcher!!, ENTRY_CREATE)
+                    coroutineContext[Job]?.invokeOnCompletion {
+                        key.cancel()
+                    }
+                    while (watcher != null && isActive) {
+                        try {
+                            key.pollEvents().forEach { event ->
+                                if (event.kind() == ENTRY_CREATE) {
+                                    val path: Path = event.context() as Path
+                                    if (path.fileName.toString().startsWith(NumassDataLoader.POINT_FRAGMENT_NAME)) {
+                                        val envelope: Envelope = NumassEnvelopeType.infer(path)?.reader?.read(path)
+                                            ?: kotlin.error("Can't read point file")
+                                        val point = NumassDataUtils.read(envelope)
+                                        res.add(buildContainer(point, this@Container))
+                                    }
+                                }
+                            }
+                        } catch (x: Throwable) {
+                            app.context.logger.error("Error during dynamic point read", x)
+                        }
+                    }
+                }
+                res
+            }
+         */
 
 
         val hasChildren: Boolean = (content is Storage) || (content is NumassSet)
@@ -99,13 +138,24 @@ class StorageView(val storage: Storage) : View(title = "Numass storage", icon =
     override val root = splitpane {
         treeview<Container> {
             //isShowRoot = false
-            root = TreeItem(Container(storage.name, storage))
-            root.isExpanded = true
-            lazyPopulate(leafCheck = {
-                !it.value.hasChildren
-            }) {
-                it.value.getChildren()
+            storageProperty.onChange { storage ->
+                clear()
+                if (storage == null) return@onChange
+                root = TreeItem(Container(storage.name, storage))
+                root.isExpanded = true
+                lazyPopulate(leafCheck = {
+                    !it.value.hasChildren
+                }) {
+                    it.value.getChildren()
+                }
+                watcher?.close()
+                watcher = if (storage is FileStorage) {
+                    storage.path.fileSystem.newWatchService()
+                } else {
+                    null
+                }
             }
+
             cellFormat { value: Container ->
                 when (value.content) {
                     is Storage -> {
diff --git a/numass-viewer/src/main/kotlin/inr/numass/viewer/TimeView.kt b/numass-viewer/src/main/kotlin/inr/numass/viewer/TimeView.kt
index 81d7c4c..ec7d4a2 100644
--- a/numass-viewer/src/main/kotlin/inr/numass/viewer/TimeView.kt
+++ b/numass-viewer/src/main/kotlin/inr/numass/viewer/TimeView.kt
@@ -21,6 +21,7 @@ import javafx.beans.binding.DoubleBinding
 import javafx.collections.FXCollections
 import javafx.collections.ObservableMap
 import javafx.scene.image.ImageView
+import kotlinx.coroutines.Dispatchers
 import tornadofx.*
 
 class TimeView : View(title = "Numass time spectrum plot", icon = ImageView(dfIcon)) {
@@ -103,7 +104,7 @@ class TimeView : View(title = "Numass time spectrum plot", icon = ImageView(dfIc
     private fun invalidate() {
         data.forEach { key, point ->
             plots.getOrPut(key) {
-                runGoal<Plottable>("loadAmplitudeSpectrum_$key") {
+                runGoal<Plottable>(app.context, "loadAmplitudeSpectrum_$key", Dispatchers.IO) {
 
                     val initialEstimate = analyzer.analyze(point)
                     val cr = initialEstimate.getDouble("cr")