[WIP] Change property and structure subscription to flows.

demo/muon-monitor/src/jsMain/kotlin/ru/mipt/npm/muon/monitor/MMAppComponent.kt

@@ -10,9 +10,9 @@ import hep.dataforge.vision.bootstrap.canvasControls
 import hep.dataforge.vision.bootstrap.card
 import hep.dataforge.vision.bootstrap.gridRow
 import hep.dataforge.vision.react.ThreeCanvasComponent
-import hep.dataforge.vision.react.configEditor
 import hep.dataforge.vision.react.flexColumn
 import hep.dataforge.vision.react.objectTree
+import hep.dataforge.vision.react.propertyEditor
 import hep.dataforge.vision.solid.specifications.Camera
 import hep.dataforge.vision.solid.specifications.Canvas3DOptions
 import hep.dataforge.vision.solid.three.ThreeCanvas
@@ -193,7 +193,7 @@ val MMApp = functionalComponent<MMAppProps>("Muon monitor") { props ->
                             else -> root[selected]
                         }
                         if (selectedObject != null) {
-                            configEditor(
+                            propertyEditor(
                                 selectedObject.config,
                                 selectedObject.descriptor,
                                 default = selectedObject.allProperties,

demo/spatial-showcase/src/jsMain/kotlin/hep/dataforge/vision/solid/demo/VariableBox.kt

@@ -5,7 +5,6 @@ import hep.dataforge.names.plus
 import hep.dataforge.names.startsWith
 import hep.dataforge.values.asValue
 import hep.dataforge.vision.getProperty
-import hep.dataforge.vision.properties
 import hep.dataforge.vision.set
 import hep.dataforge.vision.setProperty
 import hep.dataforge.vision.solid.*
@@ -34,8 +33,8 @@ internal class VariableBox(xSize: Number, ySize: Number, zSize: Number) : ThreeV
         scaleX = xSize
         scaleY = ySize
         scaleZ = zSize
-        properties[MeshThreeFactory.EDGES_ENABLED_KEY] = false
+        getProperty(MeshThreeFactory.EDGES_ENABLED_KEY, false)
-        properties[MeshThreeFactory.WIREFRAME_ENABLED_KEY] = false
+        getProperty(MeshThreeFactory.WIREFRAME_ENABLED_KEY, false)
     }
 
     override fun render(three: ThreePlugin): Object3D {
@@ -63,7 +62,7 @@ internal class VariableBox(xSize: Number, ySize: Number, zSize: Number) : ThreeV
         mesh.scale.set(xSize, ySize, zSize)
 
         //add listener to object properties
-        propertyInvalidated.onEach { name ->
+        propertyNameFlow.onEach { name ->
             when {
                 name.startsWith(GEOMETRY_KEY) -> {
                     val newXSize = getProperty(X_SIZE_KEY, false).number?.toDouble() ?: 1.0

settings.gradle.kts

@@ -1,6 +1,6 @@
 pluginManagement {
-    val kotlinVersion = "1.4.20"
+    val kotlinVersion = "1.4.21"
-    val toolsVersion = "0.7.0"
+    val toolsVersion = "0.7.1"
 
     repositories {
         mavenLocal()

ui/bootstrap/src/main/kotlin/hep/dataforge/vision/bootstrap/visionPropertyEditor.kt

@@ -3,29 +3,30 @@ package hep.dataforge.vision.bootstrap
 import hep.dataforge.meta.Meta
 import hep.dataforge.meta.descriptors.NodeDescriptor
 import hep.dataforge.vision.Vision
+import hep.dataforge.vision.allProperties
 import hep.dataforge.vision.getStyle
-import hep.dataforge.vision.properties
 import hep.dataforge.vision.react.configEditor
 import hep.dataforge.vision.react.metaViewer
+import hep.dataforge.vision.styles
 import org.w3c.dom.Element
 import react.RBuilder
 import react.dom.render
 
 public fun RBuilder.visionPropertyEditor(
-    item: Vision,
+    vision: Vision,
-    descriptor: NodeDescriptor? = item.descriptor,
+    descriptor: NodeDescriptor? = vision.descriptor,
     default: Meta? = null,
-    key: Any? = null
+    key: Any? = null,
 ) {
     card("Properties") {
-        configEditor(item.properties, descriptor, default, key)
+        configEditor(vision.allProperties(), descriptor, default, key)
     }
-    val styles = item.styles
+    val styles = vision.styles
-    if(styles.isNotEmpty()) {
+    if (styles.isNotEmpty()) {
         card("Styles") {
             accordion("styles") {
                 styles.forEach { styleName ->
-                    val style = item.getStyle(styleName)
+                    val style = vision.getStyle(styleName)
                     if (style != null) {
                         entry(styleName) {
                             metaViewer(style)
@@ -40,7 +41,7 @@ public fun RBuilder.visionPropertyEditor(
 public fun Element.visionPropertyEditor(
     item: Vision,
     descriptor: NodeDescriptor? = item.descriptor,
-    default: Meta? = null
+    default: Meta? = null,
 ): Unit = render(this) {
     visionPropertyEditor(item, descriptor, default)
 }

ui/react/src/main/kotlin/hep/dataforge/vision/react/PropertyEditor.kt

@@ -7,6 +7,14 @@ import hep.dataforge.names.NameToken
 import hep.dataforge.names.lastOrNull
 import hep.dataforge.names.plus
 import hep.dataforge.values.Value
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.channels.awaitClose
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.callbackFlow
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
+import kotlinx.coroutines.launch
 import kotlinx.html.js.onClickFunction
 import org.w3c.dom.Element
 import org.w3c.dom.events.Event
@@ -14,55 +22,59 @@ import react.*
 import react.dom.render
 import styled.*
 
-public external interface ConfigEditorItemProps : RProps {
+public external interface PropertyEditorItemProps : RProps {
 
     /**
      * Root config object - always non null
      */
-    public var root: MutableItemProvider
+    public var provider: MutableItemProvider
 
     /**
-     * Full path to the displayed node in [root]. Could be empty
+     * Full path to the displayed node in [provider]. Could be empty
      */
     public var name: Name
 
-    /**
-     * Root default
-     */
-    public var default: Meta?
-
     /**
      * Root descriptor
      */
     public var descriptor: NodeDescriptor?
+
+
+    public var scope: CoroutineScope?
+
+    /**
+     *
+     */
+    public var updateFlow: Flow<Name>?
 }
 
-private val ConfigEditorItem: FunctionalComponent<ConfigEditorItemProps> =
+private val PropertyEditorItem: FunctionalComponent<PropertyEditorItemProps> =
     functionalComponent("ConfigEditorItem") { props ->
-        configEditorItem(props)
+        propertyEditorItem(props)
     }
 
-private fun RBuilder.configEditorItem(props: ConfigEditorItemProps) {
+private fun RBuilder.propertyEditorItem(props: PropertyEditorItemProps) {
     var expanded: Boolean by useState { true }
-    var item: MetaItem<*>? by useState { props.root.getItem(props.name) }
+    var item: MetaItem<*>? by useState { props.provider.getItem(props.name) }
     val descriptorItem: ItemDescriptor? = props.descriptor?.get(props.name)
-    val defaultItem = props.default?.get(props.name)
+    var actualItem: MetaItem<Meta>? by useState { item ?: descriptorItem?.defaultItem() }
-    var actualItem: MetaItem<Meta>? by useState { item ?: defaultItem ?: descriptorItem?.defaultItem() }
 
     val token = props.name.lastOrNull()?.toString() ?: "Properties"
 
     fun update() {
-        item = props.root.getItem(props.name)
+        item = props.provider.getItem(props.name)
-        actualItem = item ?: defaultItem ?: descriptorItem?.defaultItem()
+        actualItem = item ?: descriptorItem?.defaultItem()
     }
 
-    useEffectWithCleanup(listOf(props.root)) {
+    if (props.updateFlow != null) {
-        props.root.onChange(this) { name, _, _ ->
+        useEffectWithCleanup(listOf(props.provider, props.updateFlow)) {
-            if (name == props.name) {
+            val updateJob = props.updateFlow!!.onEach { updatedName ->
-                update()
+                if (updatedName == props.name) {
-            }
+                    update()
+                }
+            }.launchIn(props.scope ?: GlobalScope)
+            return@useEffectWithCleanup { updateJob.cancel() }
         }
-        return@useEffectWithCleanup { props.root.removeListener(this) }
     }
 
     val expanderClick: (Event) -> Unit = {
@@ -71,15 +83,15 @@ private fun RBuilder.configEditorItem(props: ConfigEditorItemProps) {
 
     val valueChanged: (Value?) -> Unit = {
         if (it == null) {
-            props.root.remove(props.name)
+            props.provider.remove(props.name)
         } else {
-            props.root[props.name] = it
+            props.provider[props.name] = it
         }
         update()
     }
 
     val removeClick: (Event) -> Unit = {
-        props.root.remove(props.name)
+        props.provider.remove(props.name)
         update()
     }
 
@@ -121,7 +133,6 @@ private fun RBuilder.configEditorItem(props: ConfigEditorItemProps) {
                         add(NameToken(it))
                     }
                     item?.node?.items?.keys?.let { addAll(it) }
-                    defaultItem?.node?.items?.keys?.let { addAll(it) }
                 }
 
                 keys.filter { !it.body.startsWith("@") }.forEach { token ->
@@ -129,12 +140,11 @@ private fun RBuilder.configEditorItem(props: ConfigEditorItemProps) {
                         css {
                             +TreeStyles.treeItem
                         }
-                        child(ConfigEditorItem) {
+                        child(PropertyEditorItem) {
                             attrs {
                                 this.key = props.name.toString()
-                                this.root = props.root
+                                this.provider = props.provider
                                 this.name = props.name + token
-                                this.default = props.default
                                 this.descriptor = props.descriptor
                             }
                         }
@@ -190,63 +200,79 @@ private fun RBuilder.configEditorItem(props: ConfigEditorItemProps) {
     }
 }
 
-public external interface ConfigEditorProps : RProps {
+public external interface PropertyEditorProps : RProps {
-    public var id: Name
+    public var provider: MutableItemProvider
-    public var root: MutableItemProvider
+    public var updateFlow: Flow<Name>?
-    public var default: Meta?
     public var descriptor: NodeDescriptor?
+    public var scope: CoroutineScope?
 }
 
 @JsExport
-public val ConfigEditor: FunctionalComponent<ConfigEditorProps> = functionalComponent("ConfigEditor") { props ->
+public val PropertyEditor: FunctionalComponent<PropertyEditorProps> = functionalComponent("ConfigEditor") { props ->
-    child(ConfigEditorItem) {
+    child(PropertyEditorItem) {
         attrs {
             this.key = ""
-            this.root = props.root
+            this.provider = props.provider
             this.name = Name.EMPTY
-            this.default = props.default
             this.descriptor = props.descriptor
+            this.scope = props.scope
         }
     }
 }
 
+public fun RBuilder.propertyEditor(
+    provider: MutableItemProvider,
+    updateFlow: Flow<Name>? = null,
+    descriptor: NodeDescriptor? = null,
+    key: Any? = null,
+    scope: CoroutineScope? = null,
+) {
+    child(PropertyEditor) {
+        attrs {
+            this.key = key?.toString() ?: ""
+            this.provider = provider
+            this.updateFlow = updateFlow
+            this.descriptor = descriptor
+            this.scope = scope
+        }
+    }
+}
+
+private fun Config.flowUpdates(): Flow<Name> = callbackFlow {
+    onChange(this) { name, _, _ ->
+        launch {
+            send(name)
+        }
+    }
+    awaitClose {
+        removeListener(this)
+    }
+}
+
+public fun MutableItemProvider.withDefault(default: ItemProvider): MutableItemProvider = object : MutableItemProvider {
+    override fun getItem(name: Name): MetaItem<*>? = getItem(name) ?: default.getItem(name)
+
+    override fun setItem(name: Name, item: MetaItem<*>?) = this@withDefault.setItem(name, item)
+}
+
+
+
+public fun RBuilder.configEditor(
+    config: Config,
+    descriptor: NodeDescriptor? = null,
+    default: Meta? = null,
+    key: Any? = null,
+    scope: CoroutineScope? = null,
+) = propertyEditor(config.withDefault(default ?: ItemProvider.EMPTY), config.flowUpdates(), descriptor, key, scope)
+
 public fun Element.configEditor(
     config: Config,
     descriptor: NodeDescriptor? = null,
     default: Meta? = null,
     key: Any? = null,
+    scope: CoroutineScope? = null,
 ) {
     render(this) {
-        child(ConfigEditor) {
+        configEditor(config,descriptor,default, key, scope)
-            attrs {
-                this.key = key?.toString() ?: ""
-                this.root = config
-                this.descriptor = descriptor
-                this.default = default
-            }
-        }
     }
 }
-
-public fun RBuilder.configEditor(
-    config: MutableItemProvider,
-    descriptor: NodeDescriptor? = null,
-    default: Meta? = null,
-    key: Any? = null,
-) {
-    child(ConfigEditor) {
-        attrs {
-            this.key = key?.toString() ?: ""
-            this.root = config
-            this.descriptor = descriptor
-            this.default = default
-        }
-    }
-}
-//
-//public fun RBuilder.configEditor(
-//    obj: Configurable,
-//    descriptor: NodeDescriptor?,
-//    default: Meta? = null,
-//    key: Any? = null
-//): Unit = configEditor(obj.config, descriptor, default, key)

visionforge-core/src/commonMain/kotlin/hep/dataforge/vision/StyleSheet.kt

@@ -64,6 +64,15 @@ internal fun Vision.styleChanged(key: String, oldStyle: Meta?, newStyle: Meta?)
 }
 
 
+/**
+ * List of names of styles applied to this object. Order matters. Not inherited.
+ */
+public var Vision.styles: List<String>
+    get() = getOwnProperty(Vision.STYLE_KEY)?.stringList ?: emptyList()
+    set(value) {
+        setProperty(Vision.STYLE_KEY, value)
+    }
+
 /**
  * A stylesheet for this group and its descendants. Stylesheet is not applied directly,
  * but instead is just a repository for named configurations.

visionforge-core/src/commonMain/kotlin/hep/dataforge/vision/Vision.kt

@@ -1,15 +1,15 @@
 package hep.dataforge.vision
 
-import hep.dataforge.meta.*
+import hep.dataforge.meta.MetaItem
+import hep.dataforge.meta.MutableItemProvider
 import hep.dataforge.meta.descriptors.Described
 import hep.dataforge.meta.descriptors.NodeDescriptor
+import hep.dataforge.meta.descriptors.get
 import hep.dataforge.names.Name
 import hep.dataforge.names.asName
 import hep.dataforge.names.toName
 import hep.dataforge.provider.Type
-import hep.dataforge.values.asValue
 import hep.dataforge.vision.Vision.Companion.TYPE
-import hep.dataforge.vision.Vision.Companion.VISIBLE_KEY
 import kotlinx.coroutines.flow.Flow
 import kotlinx.serialization.Transient
 
@@ -26,7 +26,8 @@ public interface Vision : Described {
     public var parent: VisionGroup?
 
     /**
-     * A fast accessor method to get own property (no inheritance or styles
+     * A fast accessor method to get own property (no inheritance or styles).
+     * Should be equivalent to `getProperty(name,false,false,false)`.
      */
     public fun getOwnProperty(name: Name): MetaItem<*>?
 
@@ -46,13 +47,13 @@ public interface Vision : Described {
     /**
      * Set the property value
      */
-    public fun setProperty(name: Name, item: MetaItem<*>?)
+    public fun setProperty(name: Name, item: MetaItem<*>?, notify: Boolean = true)
 
     /**
      * Flow of property invalidation events. It does not contain property values after invalidation since it is not clear
      * if it should include inherited properties etc.
      */
-    public val propertyInvalidated: Flow<Name>
+    public val propertyNameFlow: Flow<Name>
 
 
     /**
@@ -60,20 +61,6 @@ public interface Vision : Described {
      */
     public fun notifyPropertyChanged(propertyName: Name): Unit
 
-    /**
-     * List of names of styles applied to this object. Order matters. Not inherited.
-     */
-    public var styles: List<String>
-        get() = getProperty(
-            STYLE_KEY,
-            inherit = false,
-            includeStyles = false,
-            includeDefaults = true
-        )?.stringList ?: emptyList()
-        set(value) {
-            setProperty(STYLE_KEY, value)
-        }
-
     /**
      * Update this vision using external meta. Children are not updated.
      */
@@ -90,19 +77,27 @@ public interface Vision : Described {
 }
 
 /**
- * Convenient accessor for all properties of a vision. Provided properties include styles and defaults, but do not inherit.
+ * Convenient accessor for all properties of a vision.
+ * @param inherit - inherit property value from the parent by default. If null, inheritance is inferred from descriptor
  */
-public val Vision.properties: MutableItemProvider
+public fun Vision.allProperties(
-    get() = object : MutableItemProvider {
+    inherit: Boolean? = null,
-        override fun getItem(name: Name): MetaItem<*>? = getProperty(name,
+    includeStyles: Boolean = true,
-            inherit = false,
+    includeDefaults: Boolean = true,
-            includeStyles = true,
+): MutableItemProvider = object : MutableItemProvider {
-            includeDefaults = true
+    override fun getItem(name: Name): MetaItem<*>? {
+        val actualInherit = inherit ?: descriptor?.get(name)?.inherited ?: false
+        return getProperty(
+            name,
+            inherit = actualInherit,
+            includeStyles = includeStyles,
+            includeDefaults = includeDefaults
         )
-
-        override fun setItem(name: Name, item: MetaItem<*>?): Unit = setProperty(name, item)
     }
 
+    override fun setItem(name: Name, item: MetaItem<*>?): Unit = setProperty(name, item)
+}
+
 /**
  * Get [Vision] property using key as a String
  */
@@ -116,31 +111,13 @@ public fun Vision.getProperty(
 /**
  * A convenience method to pair [getProperty]
  */
-public fun Vision.setProperty(key: Name, value: Any?) {
+public fun Vision.setProperty(key: Name, item: Any?) {
-    properties[key] = value
+    setProperty(key, MetaItem.of(item))
 }
 
 /**
  * A convenience method to pair [getProperty]
  */
-public fun Vision.setProperty(key: String, value: Any?) {
+public fun Vision.setProperty(key: String, item: Any?) {
-    properties[key] = value
+    setProperty(key.toName(), MetaItem.of(item))
-}
-
-/**
- * Control visibility of the element
- */
-public var Vision.visible: Boolean?
-    get() = getProperty(VISIBLE_KEY).boolean
-    set(value) = setProperty(VISIBLE_KEY, value?.asValue())
-
-public fun Vision.props(inherit: Boolean = true): MutableItemProvider = object : MutableItemProvider {
-    override fun getItem(name: Name): MetaItem<*>? {
-        return getProperty(name, inherit)
-    }
-
-    override fun setItem(name: Name, item: MetaItem<*>?) {
-        setProperty(name, item)
-    }
-
 }

visionforge-core/src/commonMain/kotlin/hep/dataforge/vision/VisionBase.kt

@@ -1,9 +1,12 @@
 package hep.dataforge.vision
 
-import hep.dataforge.meta.*
+import hep.dataforge.meta.Config
+import hep.dataforge.meta.MetaItem
+import hep.dataforge.meta.MutableMeta
 import hep.dataforge.meta.descriptors.NodeDescriptor
 import hep.dataforge.meta.descriptors.defaultItem
 import hep.dataforge.meta.descriptors.get
+import hep.dataforge.meta.update
 import hep.dataforge.names.Name
 import hep.dataforge.names.asName
 import hep.dataforge.values.ValueType
@@ -30,34 +33,28 @@ public open class VisionBase : Vision {
     /**
      * Object own properties excluding styles and inheritance
      */
-    @SerialName("properties")
+    public var properties: Config? = null
-    protected var innerProperties: Config? = null
         private set
 
-    /**
-     * All own properties as a read-only Meta
-     */
-    public val ownProperties: Meta get() = innerProperties ?: Meta.EMPTY
-
     @Synchronized
     private fun getOrCreateConfig(): Config {
-        if (innerProperties == null) {
+        if (properties == null) {
             val newProperties = Config()
-            innerProperties = newProperties
+            properties = newProperties
             newProperties.onChange(this) { name, oldItem, newItem ->
                 if (oldItem != newItem) {
                     notifyPropertyChanged(name)
                 }
             }
         }
-        return innerProperties!!
+        return properties!!
     }
 
     /**
      * A fast accessor method to get own property (no inheritance or styles
      */
     override fun getOwnProperty(name: Name): MetaItem<*>? {
-        return innerProperties?.getItem(name)
+        return properties?.getItem(name)
     }
 
     override fun getProperty(
@@ -77,9 +74,11 @@ public open class VisionBase : Vision {
     }.merge()
 
     @Synchronized
-    override fun setProperty(name: Name, item: MetaItem<*>?) {
+    override fun setProperty(name: Name, item: MetaItem<*>?, notify: Boolean) {
         getOrCreateConfig().setItem(name, item)
-        notifyPropertyChanged(name)
+        if(notify) {
+            notifyPropertyChanged(name)
+        }
     }
 
     override val descriptor: NodeDescriptor? get() = null
@@ -96,11 +95,11 @@ public open class VisionBase : Vision {
     @Transient
     private val _propertyInvalidationFlow: MutableSharedFlow<Name> = MutableSharedFlow()
 
-    override val propertyInvalidated: SharedFlow<Name> get() = _propertyInvalidationFlow
+    override val propertyNameFlow: SharedFlow<Name> get() = _propertyInvalidationFlow
 
     override fun notifyPropertyChanged(propertyName: Name) {
         if (propertyName == STYLE_KEY) {
-            updateStyles(properties.getItem(STYLE_KEY)?.stringList ?: emptyList())
+            updateStyles(styles)
         }
 
         _propertyInvalidationFlow.tryEmit(propertyName)

visionforge-core/src/commonMain/kotlin/hep/dataforge/vision/VisionChange.kt

@@ -64,7 +64,7 @@ private fun Vision.isolate(manager: VisionManager): Vision {
 public class VisionChange(
     public val reset: Boolean = false,
     public val vision: Vision? = null,
-    public val properties: Meta? = null,
+    @Serializable(MetaSerializer::class) public val properties: Meta? = null,
     public val children: Map<Name, VisionChange>? = null,
 ) {
 
@@ -81,7 +81,7 @@ private fun CoroutineScope.collectChange(
 ) {
 
     //Collect properties change
-    source.propertyInvalidated.onEach { propertyName ->
+    source.propertyNameFlow.onEach { propertyName ->
         val newItem = source.getProperty(propertyName, inherit = false, includeStyles = false, includeDefaults = false)
         collector().propertyChanged(name, propertyName, newItem)
     }.launchIn(this)

visionforge-core/src/commonMain/kotlin/hep/dataforge/vision/misc.kt

@@ -31,16 +31,15 @@ public inline fun <reified E : Enum<E>> NodeDescriptor.enum(key: Name, default:
 }
 
 @DFExperimental
-public val Vision.ownProperties: Meta?
+public val Vision.properties: Config?
-    get() = (this as? VisionBase)?.ownProperties
+    get() = (this as? VisionBase)?.properties
 
-@DFExperimental
+/**
-public val Vision.describedProperties: Meta
+ * Control visibility of the element
-    get() = Meta {
+ */
-        descriptor?.items?.forEach { (key, _) ->
+public var Vision.visible: Boolean?
-            key put getProperty(key)
+    get() = getProperty(Vision.VISIBLE_KEY).boolean
-        }
+    set(value) = setProperty(Vision.VISIBLE_KEY, value?.asValue())
-    }
 
 public fun Vision.configure(meta: Meta?): Unit = update(VisionChange(properties = meta))
 

visionforge-core/src/commonMain/kotlin/hep/dataforge/vision/visionDescriptor.kt

@@ -0,0 +1,25 @@
+package hep.dataforge.vision
+
+import hep.dataforge.meta.Meta
+import hep.dataforge.meta.boolean
+import hep.dataforge.meta.descriptors.ItemDescriptor
+import hep.dataforge.meta.descriptors.attributes
+import hep.dataforge.meta.get
+import hep.dataforge.meta.set
+
+private const val INHERITED_DESCRIPTOR_ATTRIBUTE = "inherited"
+
+public var ItemDescriptor.inherited: Boolean
+    get() = attributes[INHERITED_DESCRIPTOR_ATTRIBUTE].boolean ?: false
+    set(value) = attributes {
+        set(INHERITED_DESCRIPTOR_ATTRIBUTE, value)
+    }
+
+
+public val Vision.describedProperties: Meta
+    get() = Meta {
+        descriptor?.items?.forEach { (key, descriptor) ->
+            key put getProperty(key, inherit = descriptor.inherited)
+        }
+    }
+

visionforge-fx/src/main/kotlin/hep/dataforge/vision/editor/VisualObjectEditorFragment.kt

@@ -19,8 +19,8 @@ class VisualObjectEditorFragment(val selector: (Vision) -> Meta) : Fragment() {
     constructor(
         item: Vision?,
         descriptor: NodeDescriptor?,
-        selector: (Vision) -> MutableItemProvider = { it.properties }
+        selector: (Vision) -> MutableItemProvider = { it.allProperties() },
-    ) : this({it.describedProperties}) {
+    ) : this({ it.describedProperties }) {
         this.item = item
         this.descriptorProperty.set(descriptor)
     }

visionforge-fx/src/main/kotlin/hep/dataforge/vision/solid/FXReferenceFactory.kt

@@ -15,7 +15,7 @@ class FXReferenceFactory(val plugin: FX3DPlugin) : FX3DFactory<SolidReferenceGro
         val prototype = obj.prototype
         val node = plugin.buildNode(prototype)
 
-        obj.propertyInvalidated.onEach {  name->
+        obj.propertyNameFlow.onEach { name->
             if (name.firstOrNull()?.body == SolidReferenceGroup.REFERENCE_CHILD_PROPERTY_PREFIX) {
                 val childName = name.firstOrNull()?.index?.toName() ?: error("Wrong syntax for reference child property: '$name'")
                 val propertyName = name.cutFirst()

visionforge-fx/src/main/kotlin/hep/dataforge/vision/solid/VisualObjectFXBinding.kt

@@ -18,7 +18,7 @@ class VisualObjectFXBinding(val fx: FX3DPlugin, val obj: Vision) {
     private val bindings = HashMap<Name, ObjectBinding<MetaItem<*>?>>()
 
     init {
-        obj.propertyInvalidated.onEach { name ->
+        obj.propertyNameFlow.onEach { name ->
             bindings.filter { it.key.startsWith(name) }.forEach { entry ->
                 Platform.runLater {
                     entry.value.invalidate()

visionforge-gdml/src/commonMain/kotlin/hep/dataforge/vision/gdml/GDMLTransformer.kt

@@ -38,7 +38,6 @@ public class GDMLTransformerSettings {
 
     public var solidAction: (GDMLSolid) -> Action = { Action.PROTOTYPE }
     public var volumeAction: (GDMLGroup) -> Action = { Action.PROTOTYPE }
-
 }
 
 private class GDMLTransformer(val settings: GDMLTransformerSettings) {
@@ -324,7 +323,7 @@ private class GDMLTransformer(val settings: GDMLTransformerSettings) {
         }
     }
 
-    fun finalize(final: SolidGroup): SolidGroup {
+    private fun finalize(final: SolidGroup): SolidGroup {
         //final.prototypes = proto
         final.useStyle("GDML") {
             Solid.ROTATION_ORDER_KEY put RotationOrder.ZXY

visionforge-gdml/src/commonMain/kotlin/hep/dataforge/vision/gdml/GdmlOptimizer.kt

@@ -3,7 +3,6 @@ package hep.dataforge.vision.gdml
 import hep.dataforge.meta.DFExperimental
 import hep.dataforge.meta.sequence
 import hep.dataforge.vision.Vision
-import hep.dataforge.vision.ownProperties
 import hep.dataforge.vision.properties
 import hep.dataforge.vision.solid.*
 
@@ -28,8 +27,8 @@ internal fun Vision.updateFrom(other: Vision): Vision {
             scaleY = scaleY.toDouble() * other.scaleY.toDouble()
             scaleZ = scaleZ.toDouble() * other.scaleZ.toDouble()
         }
-        other.ownProperties?.sequence()?.forEach { (name, item) ->
+        other.properties?.sequence()?.forEach { (name, item) ->
-            if (properties.getItem(name) == null) {
+            if (getProperty(name) == null) {
                 setProperty(name, item)
             }
         }

visionforge-solid/src/commonMain/kotlin/hep/dataforge/vision/solid/Composite.kt

@@ -1,5 +1,6 @@
 package hep.dataforge.vision.solid
 
+import hep.dataforge.meta.Meta
 import hep.dataforge.meta.update
 import hep.dataforge.names.NameToken
 import hep.dataforge.vision.*
@@ -39,7 +40,7 @@ public inline fun VisionContainerBuilder<Solid>.composite(
     val children = group.children.values.filterIsInstance<Solid>()
     if (children.size != 2) error("Composite requires exactly two children")
     return Composite(type, children[0], children[1]).also {
-        it.configure { update(group.ownProperties) }
+        it.configure { update(group.properties ?: Meta.EMPTY) }
         if (group.position != null) {
             it.position = group.position
         }

visionforge-solid/src/commonMain/kotlin/hep/dataforge/vision/solid/PolyLine.kt

@@ -6,7 +6,7 @@ import hep.dataforge.names.asName
 import hep.dataforge.names.plus
 import hep.dataforge.vision.VisionBuilder
 import hep.dataforge.vision.VisionContainerBuilder
-import hep.dataforge.vision.props
+import hep.dataforge.vision.allProperties
 import hep.dataforge.vision.set
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
@@ -16,7 +16,7 @@ import kotlinx.serialization.Serializable
 public class PolyLine(public var points: List<Point3D>) : SolidBase(), Solid {
 
     //var lineType by string()
-    public var thickness: Number by props().number(1.0, key = SolidMaterial.MATERIAL_KEY + THICKNESS_KEY)
+    public var thickness: Number by allProperties(inherit = false).number(1.0, key = SolidMaterial.MATERIAL_KEY + THICKNESS_KEY)
 
     public companion object {
         public val THICKNESS_KEY: Name = "thickness".asName()

visionforge-solid/src/commonMain/kotlin/hep/dataforge/vision/solid/Solid.kt

@@ -81,7 +81,7 @@ public interface Solid : Vision {
             if (first.position != second.position) return false
             if (first.rotation != second.rotation) return false
             if (first.scale != second.scale) return false
-            if (first.ownProperties != second.ownProperties) return false
+            if (first.properties != second.properties) return false
             return true
         }
 
@@ -89,7 +89,7 @@ public interface Solid : Vision {
             var result = +(solid.position?.hashCode() ?: 0)
             result = 31 * result + (solid.rotation?.hashCode() ?: 0)
             result = 31 * result + (solid.scale?.hashCode() ?: 0)
-            result = 31 * result + solid.properties.hashCode()
+            result = 31 * result + solid.allProperties().hashCode()
             return result
         }
     }
@@ -99,7 +99,7 @@ public interface Solid : Vision {
  * Get the layer number this solid belongs to. Return 0 if layer is not defined.
  */
 public var Solid.layer: Int
-    get() = properties.getItem(LAYER_KEY).int ?: 0
+    get() = allProperties().getItem(LAYER_KEY).int ?: 0
     set(value) {
         setProperty(LAYER_KEY, value)
     }

visionforge-solid/src/commonMain/kotlin/hep/dataforge/vision/solid/SolidGroup.kt

@@ -130,7 +130,7 @@ internal class Prototypes(
         includeDefaults: Boolean,
     ): MetaItem<*>? = null
 
-    override fun setProperty(name: Name, item: MetaItem<*>?) {
+    override fun setProperty(name: Name, item: MetaItem<*>?, notify: Boolean) {
         TODO("Not yet implemented")
     }
 

visionforge-solid/src/commonMain/kotlin/hep/dataforge/vision/solid/SolidMaterial.kt

@@ -41,14 +41,14 @@ public operator fun ColorAccessor?.invoke(webColor: String) {
  * Set color as RGB integer
  */
 public operator fun ColorAccessor?.invoke(rgb: Int) {
-    this?.value = rgb.asValue()
+    this?.value = Colors.rgbToString(rgb).asValue()
 }
 
 /**
  * Set color as RGB
  */
 public operator fun ColorAccessor?.invoke(r: UByte, g: UByte, b: UByte) {
-    this?.value =  Colors.rgbToString(r, g, b).asValue()
+    this?.value = Colors.rgbToString(r, g, b).asValue()
 }
 
 @VisionBuilder
@@ -112,7 +112,15 @@ public class SolidMaterial : Scheme() {
     }
 }
 
-public val Solid.color: ColorAccessor get() = ColorAccessor(properties, MATERIAL_COLOR_KEY)
+public val Solid.color: ColorAccessor
+    get() = ColorAccessor(
+        allProperties(
+            inherit = true,
+            includeStyles = true,
+            includeDefaults = true
+        ),
+        MATERIAL_COLOR_KEY
+    )
 
 public var Solid.material: SolidMaterial?
     get() = getProperty(MATERIAL_KEY).node?.let { SolidMaterial.read(it) }
@@ -120,7 +128,11 @@ public var Solid.material: SolidMaterial?
 
 @VisionBuilder
 public fun Solid.material(builder: SolidMaterial.() -> Unit) {
-    val node = properties.getItem(MATERIAL_KEY).node
+    val node = allProperties(
+        inherit = true,
+        includeStyles = true,
+        includeDefaults = true
+    ).getItem(MATERIAL_KEY).node
     if (node != null) {
         SolidMaterial.update(node, builder)
     } else {

visionforge-solid/src/commonMain/kotlin/hep/dataforge/vision/solid/SolidReference.kt

@@ -47,12 +47,12 @@ public class SolidReferenceGroup(
         return getOwnProperty(childPropertyName(childName, propertyName))
     }
 
-    private fun setChildProperty(childName: Name, propertyName: Name, item: MetaItem<*>?) {
+    private fun setChildProperty(childName: Name, propertyName: Name, item: MetaItem<*>?, notify: Boolean) {
-        setProperty(childPropertyName(childName, propertyName), item)
+        setProperty(childPropertyName(childName, propertyName), item, notify)
     }
 
     private fun prototypeFor(name: Name): Solid {
-        return if(name.isEmpty()) prototype else {
+        return if (name.isEmpty()) prototype else {
             (prototype as? SolidGroup)?.get(name) as? Solid
                 ?: error("Prototype with name $name not found in $this")
         }
@@ -98,8 +98,8 @@ public class SolidReferenceGroup(
 
         override fun getOwnProperty(name: Name): MetaItem<*>? = getChildProperty(childName, name)
 
-        override fun setProperty(name: Name, item: MetaItem<*>?) {
+        override fun setProperty(name: Name, item: MetaItem<*>?, notify: Boolean) {
-            setChildProperty(childName, name, item)
+            setChildProperty(childName, name, item, notify)
         }
 
         override fun getProperty(
@@ -119,16 +119,16 @@ public class SolidReferenceGroup(
         }.merge()
 
         override var parent: VisionGroup?
-            get(){
+            get() {
                 val parentName = childName.cutLast()
-                return if( parentName.isEmpty()) this@SolidReferenceGroup else ReferenceChild(parentName)
+                return if (parentName.isEmpty()) this@SolidReferenceGroup else ReferenceChild(parentName)
             }
             set(value) {
                 error("Setting a parent for a reference child is not possible")
             }
 
-        override val propertyInvalidated: Flow<Name>
+        override val propertyNameFlow: Flow<Name>
-            get() = this@SolidReferenceGroup.propertyInvalidated.filter { name ->
+            get() = this@SolidReferenceGroup.propertyNameFlow.filter { name ->
                 name.startsWith(childToken(childName))
             }.map { name ->
                 name.cutFirst()

visionforge-solid/src/commonMain/kotlin/hep/dataforge/vision/solid/transform/RemoveSingleChild.kt

@@ -9,7 +9,7 @@ import hep.dataforge.vision.solid.*
 internal fun mergeChild(parent: VisionGroup, child: Vision): Vision {
     return child.apply {
 
-        configure(parent.ownProperties)
+        configure(parent.properties)
 
         //parent.properties?.let { config.update(it) }
 

visionforge-solid/src/commonTest/kotlin/hep/dataforge/vision/solid/PropertyTest.kt

@@ -2,10 +2,7 @@ package hep.dataforge.vision.solid
 
 import hep.dataforge.meta.int
 import hep.dataforge.names.asName
-import hep.dataforge.vision.getProperty
+import hep.dataforge.vision.*
-import hep.dataforge.vision.setProperty
-import hep.dataforge.vision.styleSheet
-import hep.dataforge.vision.useStyle
 import kotlin.test.Test
 import kotlin.test.assertEquals
 

visionforge-solid/src/commonTest/kotlin/hep/dataforge/vision/solid/SerializationTest.kt

@@ -4,7 +4,7 @@ import hep.dataforge.names.Name
 import hep.dataforge.names.toName
 import hep.dataforge.vision.MutableVisionGroup
 import hep.dataforge.vision.get
-import hep.dataforge.vision.ownProperties
+import hep.dataforge.vision.properties
 import kotlin.test.Test
 import kotlin.test.assertEquals
 
@@ -33,7 +33,7 @@ class SerializationTest {
         val string =  SolidManager.encodeToString(cube)
         println(string)
         val newCube = SolidManager.decodeFromString(string)
-        assertEquals(cube.ownProperties, newCube.ownProperties)
+        assertEquals(cube.properties, newCube.properties)
     }
 
     @Test
@@ -54,7 +54,7 @@ class SerializationTest {
         val string = SolidManager.encodeToString(group)
         println(string)
         val reconstructed = SolidManager.decodeFromString(string) as SolidGroup
-        assertEquals(group["cube"]?.ownProperties, reconstructed["cube"]?.ownProperties)
+        assertEquals(group["cube"]?.properties, reconstructed["cube"]?.properties)
     }
 
 }

visionforge-solid/src/commonTest/kotlin/hep/dataforge/vision/solid/VisionUpdateTest.kt

@@ -29,7 +29,7 @@ class VisionUpdateTest {
         targetVision.update(dif)
         assertTrue { targetVision["top"] is SolidGroup }
         assertEquals("red", (targetVision["origin"] as Solid).color.string) // Should work
-        assertEquals("#00007b", (targetVision["top"] as SolidGroup).color.string) // new item always takes precedence
+        assertEquals("#00007b", (targetVision["top"] as Solid).color.string) // new item always takes precedence
     }
 
     @Test

visionforge-threejs/src/main/kotlin/hep/dataforge/vision/solid/three/MeshThreeFactory.kt

@@ -45,7 +45,7 @@ public abstract class MeshThreeFactory<in T : Solid>(
         }.applyProperties(obj)
 
         //add listener to object properties
-        obj.propertyInvalidated.onEach { name ->
+        obj.propertyNameFlow.onEach { name ->
             when {
                 name.startsWith(Solid.GEOMETRY_KEY) -> {
                     val oldGeometry = mesh.geometry as BufferGeometry

visionforge-threejs/src/main/kotlin/hep/dataforge/vision/solid/three/ThreeLabelFactory.kt

@@ -27,7 +27,7 @@ public object ThreeLabelFactory : ThreeFactory<SolidLabel> {
         })
         return Mesh(textGeo, getMaterial(obj, true)).apply {
             updatePosition(obj)
-            obj.propertyInvalidated.onEach { _ ->
+            obj.propertyNameFlow.onEach { _ ->
                 //TODO
                 three.logger.warn{"Label parameter change not implemented"}
             }.launchIn(three.updateScope)

visionforge-threejs/src/main/kotlin/hep/dataforge/vision/solid/three/ThreeLineFactory.kt

@@ -30,7 +30,7 @@ public object ThreeLineFactory : ThreeFactory<PolyLine> {
             updatePosition(obj)
             //layers.enable(obj.layer)
             //add listener to object properties
-            obj.propertyInvalidated.onEach { propertyName ->
+            obj.propertyNameFlow.onEach { propertyName ->
                 updateProperty(obj, propertyName)
             }.launchIn(three.updateScope)
         }

visionforge-threejs/src/main/kotlin/hep/dataforge/vision/solid/three/ThreePlugin.kt

@@ -68,7 +68,7 @@ public class ThreePlugin : AbstractPlugin(), ElementVisionRenderer {
                     updatePosition(obj)
                     //obj.onChildrenChange()
 
-                    obj.propertyInvalidated.onEach { name ->
+                    obj.propertyNameFlow.onEach { name ->
                         if (
                             name.startsWith(Solid.POSITION_KEY) ||
                             name.startsWith(Solid.ROTATION) ||

visionforge-threejs/src/main/kotlin/hep/dataforge/vision/solid/three/ThreeReferenceFactory.kt

@@ -47,7 +47,7 @@ public object ThreeReferenceFactory : ThreeFactory<SolidReferenceGroup> {
 
         //TODO apply child properties
 
-        obj.propertyInvalidated.onEach { name->
+        obj.propertyNameFlow.onEach { name->
             if (name.firstOrNull()?.body == REFERENCE_CHILD_PROPERTY_PREFIX) {
                 val childName = name.firstOrNull()?.index?.toName() ?: error("Wrong syntax for reference child property: '$name'")
                 val propertyName = name.cutFirst()