First server iteration.

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

@@ -2,6 +2,7 @@ package hep.dataforge.vision.html
 
 import hep.dataforge.names.Name
 import hep.dataforge.vision.Vision
+import kotlinx.html.FlowContent
 import kotlinx.html.TagConsumer
 
 public class BindingHtmlOutputScope<T, V : Vision>(
@@ -16,3 +17,11 @@ public class BindingHtmlOutputScope<T, V : Vision>(
         _bindings[htmlOutput.name] = vision
     }
 }
+
+public fun <T : Any> TagConsumer<T>.visionFragment(fragment: HtmlVisionFragment<Vision>): Map<Name, Vision> {
+    return BindingHtmlOutputScope<T, Vision>(this).apply(fragment.content).bindings
+}
+
+public fun FlowContent.visionFragment(fragment: HtmlVisionFragment<Vision>): Map<Name, Vision> {
+    return BindingHtmlOutputScope<Any?, Vision>(consumer).apply(fragment.content).bindings
+}

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

@@ -3,10 +3,7 @@ package hep.dataforge.vision.html
 import hep.dataforge.names.Name
 import hep.dataforge.names.toName
 import hep.dataforge.vision.Vision
-import kotlinx.html.DIV
+import kotlinx.html.*
-import kotlinx.html.TagConsumer
-import kotlinx.html.div
-import kotlinx.html.id
 
 public class HtmlOutput<V : Vision>(
     public val outputScope: HtmlOutputScope<*, V>,
@@ -28,7 +25,9 @@ public abstract class HtmlOutputScope<R, V : Vision>(
         name: Name,
         crossinline block: HtmlOutput<V>.() -> Unit = {},
     ): T = div {
-        this.id = resolveId(name)
+        id = resolveId(name)
+        classes = setOf(OUTPUT_CLASS)
+        attributes[NAME_ATTRIBUTE] = name.toString()
         @Suppress("UNCHECKED_CAST")
         HtmlOutput(this@HtmlOutputScope, name, this).block()
     }
@@ -49,4 +48,20 @@ public abstract class HtmlOutputScope<R, V : Vision>(
             renderVision(this, vision)
         }
     }
+
+    /**
+     * Process the resulting object produced by [TagConsumer]
+     */
+    protected open fun processResult(result: R) {
+        //do nothing by default
+    }
+
+    override fun finalize(): R {
+        return root.finalize().also { processResult(it) }
+    }
+
+    public companion object {
+        public const val OUTPUT_CLASS: String = "visionforge-output"
+        public const val NAME_ATTRIBUTE: String = "data-output-name"
+    }
 }

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

@@ -1,8 +1,20 @@
 package hep.dataforge.vision.html
 
 import hep.dataforge.vision.Vision
+import kotlinx.html.FlowContent
+import kotlinx.html.TagConsumer
 
-public class HtmlVisionFragment<V : Vision>(public val layout: HtmlOutputScope<out Any, V>.() -> Unit)
+public class HtmlFragment(public val content: TagConsumer<*>.() -> Unit)
 
-public fun buildVisionFragment(visit: HtmlOutputScope<out Any, Vision>.() -> Unit): HtmlVisionFragment<Vision> =
+public fun TagConsumer<*>.fragment(fragment: HtmlFragment) {
-    HtmlVisionFragment(visit)
+    fragment.content(this)
+}
+
+public fun FlowContent.fragment(fragment: HtmlFragment) {
+    fragment.content(consumer)
+}
+
+public class HtmlVisionFragment<V : Vision>(public val content: HtmlOutputScope<*, V>.() -> Unit)
+
+public fun buildVisionFragment(block: HtmlOutputScope<*, Vision>.() -> Unit): HtmlVisionFragment<Vision> =
+    HtmlVisionFragment(block)

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

@@ -22,7 +22,7 @@ public fun <T : Any> HtmlVisionFragment<Vision>.renderToObject(
     root: TagConsumer<T>,
     prefix: String? = null,
     renderer: HtmlVisionRenderer<Vision>,
-): T = StaticHtmlOutputScope(root, prefix, renderer).apply(layout).finalize()
+): T = StaticHtmlOutputScope(root, prefix, renderer).apply(content).finalize()
 
 public fun HtmlVisionFragment<Vision>.renderToString(renderer: HtmlVisionRenderer<Vision>): String =
     renderToObject(createHTML(), null, renderer)

visionforge-core/src/jsMain/kotlin/hep/dataforge/vision/html/DynamicHtmlOutputContext.kt

@@ -1,31 +0,0 @@
-package hep.dataforge.vision.html
-
-import hep.dataforge.vision.Vision
-import kotlinx.browser.document
-import kotlinx.html.TagConsumer
-import org.w3c.dom.Element
-import org.w3c.dom.HTMLElement
-
-public interface HtmlVisionBinding<in V: Vision>{
-    public fun bind(element: Element, vision: V): Unit
-}
-
-public fun <V: Vision> Map<String, V>.bind(binder: HtmlVisionBinding<V>){
-    forEach { (id, vision) ->
-        val element = document.getElementById(id) ?: error("Could not find element with id $id")
-        binder.bind(element, vision)
-    }
-}
-
-public fun HtmlVisionFragment<Vision>.bindToDocument(
-    root: TagConsumer<HTMLElement>,
-    binder: HtmlVisionBinding<Vision>,
-): HTMLElement = BindingHtmlOutputScope<HTMLElement, Vision>(root).apply(layout).let { scope ->
-    scope.finalize().apply {
-        scope.bindings.forEach { (name, vision) ->
-            val id = scope.resolveId(name)
-            val element = document.getElementById(id) ?: error("Could not find element with name $name and id $id")
-            binder.bind(element, vision)
-        }
-    }
-}

visionforge-core/src/jsMain/kotlin/hep/dataforge/vision/html/elementOutput.kt

@@ -0,0 +1,53 @@
+package hep.dataforge.vision.html
+
+import hep.dataforge.names.Name
+import hep.dataforge.names.toName
+import hep.dataforge.vision.Vision
+import kotlinx.browser.document
+import kotlinx.html.TagConsumer
+import org.w3c.dom.*
+
+public interface ElementVisionRenderer<in V : Vision> {
+    public fun render(element: Element, vision: V): Unit
+}
+
+public fun <V : Vision> Map<String, V>.bind(renderer: ElementVisionRenderer<V>) {
+    forEach { (id, vision) ->
+        val element = document.getElementById(id) ?: error("Could not find element with id $id")
+        renderer.render(element, vision)
+    }
+}
+
+public fun <V : Vision> Element.renderVisions(renderer: ElementVisionRenderer<V>, visionProvider: (Name) -> V?) {
+    val elements = getElementsByClassName(HtmlOutputScope.OUTPUT_CLASS)
+    elements.asList().forEach { element ->
+        val name = element.attributes[HtmlOutputScope.NAME_ATTRIBUTE]?.value
+        if (name == null) {
+            console.error("Attribute ${HtmlOutputScope.NAME_ATTRIBUTE} not defined in the output element")
+            return@forEach
+        }
+        val vision = visionProvider(name.toName())
+        if (vision == null) {
+            console.error("Vision with name $name is not resolved")
+            return@forEach
+        }
+        renderer.render(element, vision)
+    }
+}
+
+public fun <V : Vision> Document.renderVisions(renderer: ElementVisionRenderer<V>, visionProvider: (Name) -> V?): Unit {
+    documentElement?.renderVisions(renderer, visionProvider)
+}
+
+public fun HtmlVisionFragment<Vision>.renderInDocument(
+    root: TagConsumer<HTMLElement>,
+    renderer: ElementVisionRenderer<Vision>,
+): HTMLElement = BindingHtmlOutputScope<HTMLElement, Vision>(root).apply(content).let { scope ->
+    scope.finalize().apply {
+        scope.bindings.forEach { (name, vision) ->
+            val id = scope.resolveId(name)
+            val element = document.getElementById(id) ?: error("Could not find element with name $name and id $id")
+            renderer.render(element, vision)
+        }
+    }
+}

visionforge-server/src/main/kotlin/hep/dataforge/vision/server/VisionServer.kt

@@ -1,92 +1,137 @@
-//package hep.dataforge.vision.server
+package hep.dataforge.vision.server
-//
+
-//import hep.dataforge.meta.*
+import hep.dataforge.context.Context
-//import hep.dataforge.names.Name
+import hep.dataforge.meta.*
-//import hep.dataforge.names.toName
+import hep.dataforge.names.Name
-//import hep.dataforge.vision.server.VisionServer.Companion.DEFAULT_PAGE
+import hep.dataforge.names.toName
-//import io.ktor.application.Application
+import hep.dataforge.vision.Vision
-//import io.ktor.application.featureOrNull
+import hep.dataforge.vision.VisionManager
-//import io.ktor.application.install
+import hep.dataforge.vision.flowChanges
-//import io.ktor.features.CORS
+import hep.dataforge.vision.html.*
-//import io.ktor.http.content.resources
+import hep.dataforge.vision.server.VisionServer.Companion.DEFAULT_PAGE
-//import io.ktor.http.content.static
+import io.ktor.application.*
-//import io.ktor.routing.Routing
+import io.ktor.features.CORS
-//import io.ktor.routing.route
+import io.ktor.html.respondHtml
-//import io.ktor.routing.routing
+import io.ktor.http.*
-//import io.ktor.server.engine.ApplicationEngine
+import io.ktor.http.cio.websocket.Frame
-//import io.ktor.websocket.WebSockets
+import io.ktor.http.content.resources
-//import kotlinx.html.TagConsumer
+import io.ktor.http.content.static
-//import java.awt.Desktop
+import io.ktor.response.respond
-//import java.net.URI
+import io.ktor.response.respondText
-//import kotlin.text.get
+import io.ktor.routing.*
-//
+import io.ktor.server.engine.ApplicationEngine
-//public enum class ServerUpdateMode {
+import io.ktor.websocket.WebSockets
-//    NONE,
+import io.ktor.websocket.webSocket
-//    PUSH,
+import kotlinx.html.*
-//    PULL
+import kotlinx.html.stream.createHTML
-//}
+import java.awt.Desktop
-//
+import java.net.URI
-//public class VisionServer internal constructor(
+import kotlin.time.milliseconds
-//    private val routing: Routing,
+
-//    private val rootRoute: String,
+public class VisionServer internal constructor(
-//) : Configurable {
+    private val visionManager: VisionManager,
-//    override val config: Config = Config()
+    private val routing: Routing,
-//    public var updateMode: ServerUpdateMode by config.enum(ServerUpdateMode.NONE, key = UPDATE_MODE_KEY)
+    private val rootRoute: String,
-//    public var updateInterval: Long by config.long(300, key = UPDATE_INTERVAL_KEY)
+) : Configurable {
-//    public var embedData: Boolean by config.boolean(false)
+    override val config: Config = Config()
-//
+    public var updateInterval: Long by config.long(300, key = UPDATE_INTERVAL_KEY)
-//    /**
+    public var cacheFragments: Boolean by config.boolean(true)
-//     * a list of headers that should be applied to all pages
+
-//     */
+    /**
-//    private val globalHeaders: ArrayList<HtmlFragment> = ArrayList<HtmlFragment>()
+     * a list of headers that should be applied to all pages
-//
+     */
-//    public fun header(block: TagConsumer<*>.() -> Unit) {
+    private val globalHeaders: ArrayList<HtmlFragment> = ArrayList()
-//        globalHeaders.add(HtmlFragment(block))
+
-//    }
+    public fun header(block: TagConsumer<*>.() -> Unit) {
-//
+        globalHeaders.add(HtmlFragment(block))
-//    public fun page(
+    }
-//        plotlyFragment: PlotlyFragment,
+
-//        route: String = DEFAULT_PAGE,
+    private fun HTML.buildPage(
-//        title: String = "Plotly server page '$route'",
+        visionFragment: HtmlVisionFragment<Vision>,
-//        headers: List<HtmlFragment> = emptyList(),
+        title: String,
-//    ) {
+        headers: List<HtmlFragment>,
-//        routing.createRouteFromPath(rootRoute).apply {
+    ): Map<Name, Vision> {
-//            val plots = HashMap<String, Plot>()
+        lateinit var result: Map<Name, Vision>
-//            route(route) {
+
-//                //Update websocket
+        head {
-//                webSocket("ws/{id}") {
+            meta {
-//                    val plotId: String = call.parameters["id"] ?: error("Plot id not defined")
+                charset = "utf-8"
-//
+                (globalHeaders + headers).forEach {
-//                    application.log.debug("Opened server socket for $plotId")
+                    fragment(it)
-//
+                }
-//                    val plot = plots[plotId] ?: error("Plot with id='$plotId' not registered")
+            }
-//
+            title(title)
-//                    try {
+        }
-//                        plot.collectUpdates(plotId, this, updateInterval).collect { update ->
+        body {
-//                            val json = update.toJson()
+            result = visionFragment(visionFragment)
-//                            outgoing.send(Frame.Text(json.toString()))
+            script {
-//                        }
+                type = "text/javascript"
-//                    } catch (ex: Exception) {
+
-//                        application.log.debug("Closed server socket for $plotId")
+                val normalizedRoute = if (rootRoute.endsWith("/")) {
-//                    }
+                    rootRoute
-//                }
+                } else {
-//                //Plots in their json representation
+                    "$rootRoute/"
-//                get("data/{id}") {
+                }
-//                    val id: String = call.parameters["id"] ?: error("Plot id not defined")
+
-//
+                src = TODO()//"${normalizedRoute}js/plotlyConnect.js"
-//                    val plot: Plot? = plots[id]
+            }
-//                    if (plot == null) {
+        }
-//                        call.respond(HttpStatusCode.NotFound, "Plot with id = $id not found")
+
-//                    } else {
+        return result
-//                        call.respondText(
+    }
-//                            plot.toJsonString(),
+
-//                            contentType = ContentType.Application.Json,
+    public fun page(
-//                            status = HttpStatusCode.OK
+        visionFragment: HtmlVisionFragment<Vision>,
-//                        )
+        route: String = DEFAULT_PAGE,
-//                    }
+        title: String = "VisionForge server page '$route'",
-//                }
+        headers: List<HtmlFragment> = emptyList(),
-//                //filled pages
+    ) {
-//                get {
+        val visions = HashMap<Name, Vision>()
+
+        val cachedHtml: String? = if (cacheFragments) {
+            createHTML(true).html {
+                visions.putAll(buildPage(visionFragment, title, headers))
+            }
+        } else {
+            null
+        }
+
+        routing.createRouteFromPath(rootRoute).apply {
+            route(route) {
+                //Update websocket
+                webSocket("ws") {
+                    val name: String = call.request.queryParameters["name"]
+                        ?: error("Vision name is not defined in parameters")
+
+                    application.log.debug("Opened server socket for $name")
+                    val vision: Vision = visions[name.toName()] ?: error("Plot with id='$name' not registered")
+                    try {
+                        vision.flowChanges(this, updateInterval.milliseconds).collect { update ->
+                            val json = visionManager.encodeToString(update)
+                            outgoing.send(Frame.Text(json))
+                        }
+                    } catch (ex: Exception) {
+                        application.log.debug("Closed server socket for $name")
+                    }
+                }
+                //Plots in their json representation
+                get("vision") {
+                    val name: String = call.request.queryParameters["name"]
+                        ?: error("Vision name is not defined in parameters")
+
+                    val vision: Vision? = visions[name.toName()]
+                    if (vision == null) {
+                        call.respond(HttpStatusCode.NotFound, "Vision with name '$name' not found")
+                    } else {
+                        call.respondText(
+                            visionManager.encodeToString(vision),
+                            contentType = ContentType.Application.Json,
+                            status = HttpStatusCode.OK
+                        )
+                    }
+                }
+                //filled pages
+                get {
 //                    val origin = call.request.origin
 //                    val url = URLBuilder().apply {
 //                        protocol = URLProtocol.createOrDefault(origin.scheme)
@@ -95,125 +140,68 @@
 //                        port = origin.port
 //                        encodedPath = origin.uri
 //                    }.build()
-//                    call.respondHtml {
+                    if (cachedHtml == null) {
-//                        val normalizedRoute = if (rootRoute.endsWith("/")) {
+                        call.respondHtml {
-//                            rootRoute
+                            visions.putAll(buildPage(visionFragment, title, headers))
-//                        } else {
+                        }
-//                            "$rootRoute/"
+                    } else {
-//                        }
+                        call.respondText(cachedHtml, ContentType.Text.Html.withCharset(Charsets.UTF_8))
-//
+                    }
-//                        head {
+                }
-//                            meta {
+            }
-//                                charset = "utf-8"
+        }
-//                                (globalHeaders + headers).forEach {
+    }
-//                                    it.visit(consumer)
+
-//                                }
+    public fun page(
-//                                script {
+        route: String = DEFAULT_PAGE,
-//                                    type = "text/javascript"
+        title: String = "Plotly server page '$route'",
-//                                    src = "${normalizedRoute}js/plotly.min.js"
+        headers: List<HtmlFragment> = emptyList(),
-//                                }
+        content: HtmlOutputScope<*, Vision>.() -> Unit,
-//                                script {
+    ) {
-//                                    type = "text/javascript"
+        page(buildVisionFragment(content), route, title, headers)
-//                                    src = "${normalizedRoute}js/plotlyConnect.js"
+    }
-//                                }
+
-//                            }
+
-//                            title(title)
+    public companion object {
-//                        }
+        public const val DEFAULT_PAGE: String = "/"
-//                        body {
+        public val UPDATE_MODE_KEY: Name = "update.mode".toName()
-//                            val container =
+        public val UPDATE_INTERVAL_KEY: Name = "update.interval".toName()
-//                                ServerPlotlyRenderer(url, updateMode, updateInterval, embedData) { plotId, plot ->
+    }
-//                                    plots[plotId] = plot
+}
-//                                }
+
-//                            with(plotlyFragment) {
+
-//                                render(container)
+/**
-//                            }
+ * Attach plotly application to given server
-//                        }
+ */
-//                    }
+public fun Application.visionModule(context: Context, route: String = DEFAULT_PAGE): VisionServer {
-//                }
+    if (featureOrNull(WebSockets) == null) {
-//            }
+        install(WebSockets)
-//        }
+    }
-//    }
+
-//
+    if (featureOrNull(CORS) == null) {
-//    public fun page(
+        install(CORS) {
-//        route: String = DEFAULT_PAGE,
+            anyHost()
-//        title: String = "Plotly server page '$route'",
+        }
-//        headers: List<HtmlFragment> = emptyList(),
+    }
-//        content: FlowContent.(renderer: PlotlyRenderer) -> Unit,
+
-//    ) {
+
-//        page(PlotlyFragment(content), route, title, headers)
+    val routing = routing {
-//    }
+        route(route) {
-//
+            static {
-//
+                resources()
-//    public companion object {
+            }
-//        public const val DEFAULT_PAGE: String = "/"
+        }
-//        public val UPDATE_MODE_KEY: Name = "update.mode".toName()
+    }
-//        public val UPDATE_INTERVAL_KEY: Name = "update.interval".toName()
+
-//    }
+    val visionManager = context.plugins.fetch(VisionManager)
-//}
+
-//
+    return VisionServer(visionManager, routing, route)
-//
+}
-///**
+
-// * Attach plotly application to given server
+public fun ApplicationEngine.show() {
-// */
+    val connector = environment.connectors.first()
-//public fun Application.visionModule(route: String = DEFAULT_PAGE): VisionServer {
+    val uri = URI("http", null, connector.host, connector.port, null, null, null)
-//    if (featureOrNull(WebSockets) == null) {
+    Desktop.getDesktop().browse(uri)
-//        install(WebSockets)
+}
-//    }
+
-//
+public fun ApplicationEngine.close(): Unit = stop(1000, 5000)
-//    if (featureOrNull(CORS) == null) {
-//        install(CORS) {
-//            anyHost()
-//        }
-//    }
-//
-//
-//    val routing = routing {
-//        route(route) {
-//            static {
-//                resources()
-//            }
-//        }
-//    }
-//
-//    return VisionServer(routing, route)
-//}
-//
-//
-///**
-// * Configure server to start sending updates in push mode. Does not affect loaded pages
-// */
-//public fun VisionServer.pushUpdates(interval: Long = 100): VisionServer = apply {
-//    updateMode = ServerUpdateMode.PUSH
-//    updateInterval = interval
-//}
-//
-///**
-// * Configure client to request regular updates from server. Pull updates are more expensive than push updates since
-// * they contain the full plot data and server can't decide what to send.
-// */
-//public fun VisionServer.pullUpdates(interval: Long = 1000): VisionServer = apply {
-//    updateMode = ServerUpdateMode.PULL
-//    updateInterval = interval
-//}
-//
-/////**
-//// * Start static server (updates via reload)
-//// */
-////@OptIn(KtorExperimentalAPI::class)
-////public fun Plotly.serve(
-////    scope: CoroutineScope = GlobalScope,
-////    host: String = "localhost",
-////    port: Int = 7777,
-////    block: PlotlyServer.() -> Unit,
-////): ApplicationEngine = scope.embeddedServer(io.ktor.server.cio.CIO, port, host) {
-////    plotlyModule().apply(block)
-////}.start()
-//
-//
-//public fun ApplicationEngine.show() {
-//    val connector = environment.connectors.first()
-//    val uri = URI("http", null, connector.host, connector.port, null, null, null)
-//    Desktop.getDesktop().browse(uri)
-//}
-//
-//public fun ApplicationEngine.close(): Unit = stop(1000, 5000)

visionforge-solid/build.gradle.kts

@@ -14,11 +14,5 @@ kotlin {
                 api(project(":visionforge-core"))
             }
         }
-        jsMain {
-            dependencies {
-                implementation(npm("three", "0.122.0"))
-                implementation(npm("three-csg-ts", "1.0.1"))
-            }
-        }
     }
 }

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

@@ -4,7 +4,7 @@ import hep.dataforge.context.*
 import hep.dataforge.meta.Meta
 import hep.dataforge.names.*
 import hep.dataforge.vision.Vision
-import hep.dataforge.vision.html.HtmlVisionBinding
+import hep.dataforge.vision.html.ElementVisionRenderer
 import hep.dataforge.vision.solid.*
 import hep.dataforge.vision.solid.specifications.Canvas3DOptions
 import hep.dataforge.vision.visible
@@ -15,7 +15,7 @@ import kotlin.collections.set
 import kotlin.reflect.KClass
 import info.laht.threekt.objects.Group as ThreeGroup
 
-public class ThreePlugin : AbstractPlugin(), HtmlVisionBinding<Solid> {
+public class ThreePlugin : AbstractPlugin(), ElementVisionRenderer<Solid> {
     override val tag: PluginTag get() = Companion.tag
 
     public val solidManager: SolidManager by require(SolidManager)
@@ -122,7 +122,7 @@ public class ThreePlugin : AbstractPlugin(), HtmlVisionBinding<Solid> {
         attach(element)
     }
 
-    override fun bind(element: Element, vision: Solid) {
+    override fun render(element: Element, vision: Solid) {
         createCanvas(element).render(vision)
     }