web: hide internal properties from AttrsScope, EventsListenerScope, StyleScope (#1802)

Co-authored-by: Oleksandr Karpovich <oleksandr.karpovich@jetbrains.com>

web/core/src/jsMain/kotlin/org/jetbrains/compose/web/attributes/AttrsScope.kt

@@ -28,16 +28,6 @@ typealias AttrsBuilder<T> = AttrsScopeBuilder<T>
  *
  */
 interface AttrsScope<TElement : Element>: EventsListenerScope {
-    @ComposeWebInternalApi
-    val attributesMap: Map<String, String>
-    @ComposeWebInternalApi
-    val styleScope: StyleScope
-
-    @ComposeWebInternalApi
-    val propertyUpdates: List<Pair<(Element, Any) -> Unit, Any>>
-    @ComposeWebInternalApi
-    var refEffect: (DisposableEffectScope.(TElement) -> DisposableEffectResult)?
-
     /**
      * [style] add inline CSS-style properties to the element via [StyleScope] context
      *
@@ -50,9 +40,7 @@ interface AttrsScope<TElement : Element>: EventsListenerScope {
      *
      * `attr("style", ...)` overrides everything added in `style { }` blocks
      */
-    fun style(builder: StyleScope.() -> Unit) {
-        styleScope.apply(builder)
-    }
+    fun style(builder: StyleScope.() -> Unit)
 
     /**
      * [classes] adds all values passed as params to the element's classList.
@@ -105,7 +93,7 @@ interface AttrsScope<TElement : Element>: EventsListenerScope {
     fun attr(attr: String, value: String): AttrsScope<TElement>
 
     /**
-     * [prop] allows setting values of element's properties which can't be set by ussing [attr].
+     * [prop] allows setting values of element's properties which can't be set using [attr].
      * [update] is a lambda with two parameters: `element` and `value`. `element` is a reference to a native element.
      * Some examples of properties that can set using [prop]: `value`, `checked`, `innerText`.
      *
@@ -124,9 +112,6 @@ interface AttrsScope<TElement : Element>: EventsListenerScope {
     @Suppress("UNCHECKED_CAST")
     fun <E : HTMLElement, V> prop(update: (E, V) -> Unit, value: V)
 
-    @ComposeWebInternalApi
-    fun copyFrom(attrsScope: AttrsScope<TElement>)
-
     companion object {
         const val CLASS = "class"
         const val ID = "id"
@@ -141,13 +126,13 @@ interface AttrsScope<TElement : Element>: EventsListenerScope {
     }
 }
 
-open class AttrsScopeBuilder<TElement : Element> : AttrsScope<TElement>, EventsListenerScope by EventsListenerScopeBuilder() {
-    override val attributesMap = mutableMapOf<String, String>()
-    override val styleScope: StyleScope = StyleScopeBuilder()
-
-    override val propertyUpdates = mutableListOf<Pair<(Element, Any) -> Unit, Any>>()
-    override var refEffect: (DisposableEffectScope.(TElement) -> DisposableEffectResult)? = null
-
+open class AttrsScopeBuilder<TElement : Element>(
+    internal val eventsListenerScopeBuilder: EventsListenerScopeBuilder = EventsListenerScopeBuilder()
+) : AttrsScope<TElement>, EventsListenerScope by eventsListenerScopeBuilder {
+    internal val attributesMap = mutableMapOf<String, String>()
+    internal val styleScope: StyleScopeBuilder = StyleScopeBuilder()
+    internal val propertyUpdates = mutableListOf<Pair<(Element, Any) -> Unit, Any>>()
+    internal var refEffect: (DisposableEffectScope.(TElement) -> DisposableEffectResult)? = null
     internal val classes: MutableList<String> = mutableListOf()
 
     /**
@@ -160,6 +145,22 @@ open class AttrsScopeBuilder<TElement : Element> : AttrsScope<TElement>, EventsL
         this.classes.addAll(classes)
     }
 
+    /**
+     * [style] add inline CSS-style properties to the element via [StyleScope] context
+     *
+     * Example:
+     * ```
+     * Div({
+     *      style { maxWidth(5.px) }
+     * })
+     * ```
+     *
+     * `attr("style", ...)` overrides everything added in `style { }` blocks
+     */
+    override fun style(builder: StyleScope.() -> Unit) {
+        styleScope.apply(builder)
+    }
+
     /**
      * [ref] can be used to retrieve a reference to a html element.
      * The lambda that `ref` takes in is not Composable. It will be called only once when an element added into a composition.
@@ -212,14 +213,14 @@ open class AttrsScopeBuilder<TElement : Element> : AttrsScope<TElement>, EventsL
     }
 
     @ComposeWebInternalApi
-    override fun copyFrom(attrsScope: AttrsScope<TElement>) {
+    internal fun copyFrom(attrsScope: AttrsScopeBuilder<TElement>) {
         refEffect = attrsScope.refEffect
         styleScope.copyFrom(attrsScope.styleScope)
 
         attributesMap.putAll(attrsScope.attributesMap)
         propertyUpdates.addAll(attrsScope.propertyUpdates)
 
-        copyListenersFrom(attrsScope)
+        eventsListenerScopeBuilder.copyListenersFrom(attrsScope.eventsListenerScopeBuilder)
     }
 }
 

web/core/src/jsMain/kotlin/org/jetbrains/compose/web/attributes/EventsListenerScope.kt

@@ -25,9 +25,6 @@ typealias EventsListenerBuilder = EventsListenerScopeBuilder
  * use [addEventListener]
  */
 interface EventsListenerScope {
-    @ComposeWebInternalApi
-    val listeners: List<SyntheticEventListener<*>>
-    
     @ComposeWebInternalApi
     fun registerEventListener(listener: SyntheticEventListener<*>)
 
@@ -197,8 +194,6 @@ interface EventsListenerScope {
         registerEventListener(SyntheticEventListener(SCROLL, listener))
     }
 
-    fun collectListeners(): List<SyntheticEventListener<*>> = listeners
-    
     /**
      * [addEventListener] used for adding arbitrary events to the element. It resembles the standard DOM addEventListener method
      * @param eventName - the name of the event
@@ -219,9 +214,6 @@ interface EventsListenerScope {
         registerEventListener(SyntheticEventListener(eventName, listener))
     }
 
-    @ComposeWebInternalApi
-    fun copyListenersFrom(from: EventsListenerScope)
-    
     companion object {
         const val COPY = "copy"
         const val CUT = "cut"
@@ -276,14 +268,16 @@ interface EventsListenerScope {
     }
 }
 
-open class EventsListenerScopeBuilder: EventsListenerScope {
-    override val listeners: MutableList<SyntheticEventListener<*>> = mutableListOf()
+open class EventsListenerScopeBuilder : EventsListenerScope {
+    private val listeners: MutableList<SyntheticEventListener<*>> = mutableListOf()
 
     override fun registerEventListener(listener: SyntheticEventListener<*>) {
         listeners.add(listener)
     }
 
-    override fun copyListenersFrom(from: EventsListenerScope) {
+    internal fun copyListenersFrom(from: EventsListenerScopeBuilder) {
         listeners.addAll(from.listeners)
     }
+
+    internal fun collectListeners(): List<SyntheticEventListener<*>> = listeners
 }

web/core/src/jsMain/kotlin/org/jetbrains/compose/web/attributes/builders/InputAttrsScope.kt

@@ -38,8 +38,9 @@ typealias InputAttrsBuilder<T> = InputAttrsScope<T>
  * [onSelect] - add `select` event listener
  */
 class InputAttrsScope<ValueType>(
-    val inputType: InputType<ValueType>
-) : AttrsScopeBuilder<HTMLInputElement>() {
+    val inputType: InputType<ValueType>,
+    attrsScope: AttrsScope<HTMLInputElement>
+) : AttrsScope<HTMLInputElement> by attrsScope {
 
     fun value(value: String): InputAttrsScope<ValueType> {
         when (inputType) {

web/core/src/jsMain/kotlin/org/jetbrains/compose/web/attributes/builders/SelectAttrsScope.kt

@@ -5,7 +5,7 @@
 
 package androidx.compose.web.attributes
 
-import org.jetbrains.compose.web.attributes.AttrsScopeBuilder
+import org.jetbrains.compose.web.attributes.AttrsScope
 import org.jetbrains.compose.web.attributes.EventsListenerScope.Companion.CHANGE
 import org.jetbrains.compose.web.attributes.EventsListenerScope.Companion.INPUT
 import org.jetbrains.compose.web.attributes.SyntheticEventListener
@@ -20,7 +20,7 @@ import org.w3c.dom.events.Event
 )
 typealias SelectAttrsBuilder = SelectAttrsScope
 
-class SelectAttrsScope : AttrsScopeBuilder<HTMLSelectElement>() {
+class SelectAttrsScope(attrsScope: AttrsScope<HTMLSelectElement>) : AttrsScope<HTMLSelectElement> by attrsScope {
 
     fun onInput(
         listener: (SyntheticInputEvent<String?, HTMLSelectElement>) -> Unit

web/core/src/jsMain/kotlin/org/jetbrains/compose/web/attributes/builders/TextAreaAttrsScope.kt

@@ -26,7 +26,7 @@ import org.w3c.dom.HTMLTextAreaElement
 )
 typealias TextAreaAttrsBuilder = TextAreaAttrsScope
 
-class TextAreaAttrsScope : AttrsScopeBuilder<HTMLTextAreaElement>() {
+class TextAreaAttrsScope(attrsScope: AttrsScope<HTMLTextAreaElement>) : AttrsScope<HTMLTextAreaElement> by attrsScope {
 
     fun value(value: String): AttrsScope<HTMLTextAreaElement> {
         prop(setInputValue, value)

web/core/src/jsMain/kotlin/org/jetbrains/compose/web/css/StyleScope.kt

@@ -10,13 +10,19 @@ package org.jetbrains.compose.web.css
 import org.jetbrains.compose.web.internal.runtime.ComposeWebInternalApi
 import kotlin.properties.ReadOnlyProperty
 
+@Deprecated(
+    message = "Renamed to StyleScope",
+    replaceWith = ReplaceWith("StyleScope", "org.jetbrains.compose.web.css.StyleScope")
+)
+typealias StyleBuilder = StyleScope
+
 /**
- * StyleBuilder serves for two main purposes. Passed as a builder context (in [AttrsScope]), it
+ * StyleScope serves for two main purposes. Passed as a builder context (in [AttrsScope]), it
  * makes it possible to:
  * 1. Add inlined css properties to the element (@see [property])
  * 2. Set values to CSS variables (@see [variable])
  */
-interface StyleBuilder {
+interface StyleScope {
     /**
      * Adds arbitrary CSS property to the inline style of the element
      * @param propertyName - the name of css property as [per spec](https://developer.mozilla.org/en-US/docs/Web/CSS/Reference)
@@ -131,20 +137,14 @@ interface StyleHolder {
     val variables: StylePropertyList
 }
 
-interface StyleScope : StyleBuilder, StyleHolder {
-    @ComposeWebInternalApi
-    fun copyFrom(sb: StyleScope)
-}
-
 @Deprecated(
     message = "Renamed to StyleScopeBuilder",
     replaceWith = ReplaceWith("StyleScopeBuilder", "org.jetbrains.compose.web.css.StyleScopeBuilder")
 )
 typealias StyleBuilderImpl = StyleScopeBuilder
 
-@OptIn(ComposeWebInternalApi::class)
 @Suppress("EqualsOrHashCode")
-open class StyleScopeBuilder : StyleScope {
+open class StyleScopeBuilder : StyleScope, StyleHolder {
     override val properties: MutableStylePropertyList = mutableListOf()
     override val variables: MutableStylePropertyList = mutableListOf()
 
@@ -164,7 +164,8 @@ open class StyleScopeBuilder : StyleScope {
         } else false
     }
 
-    override fun copyFrom(sb: StyleScope) {
+    @ComposeWebInternalApi
+    internal fun copyFrom(sb: StyleHolder) {
         properties.addAll(sb.properties)
         variables.addAll(sb.variables)
     }

web/core/src/jsMain/kotlin/org/jetbrains/compose/web/elements/Base.kt

@@ -127,7 +127,10 @@ fun <TElement : Element> TagElement(
                 set(attrsScope.classes, DomElementWrapper::updateClasses)
                 set(attrsScope.styleScope, DomElementWrapper::updateStyleDeclarations)
                 set(attrsScope.collect(), DomElementWrapper::updateAttrs)
-                set(attrsScope.collectListeners(), DomElementWrapper::updateEventListeners)
+                set(
+                    attrsScope.eventsListenerScopeBuilder.collectListeners(),
+                    DomElementWrapper::updateEventListeners
+                )
                 set(attrsScope.propertyUpdates, DomElementWrapper::updateProperties)
             }
         },

web/core/src/jsMain/kotlin/org/jetbrains/compose/web/elements/Elements.kt

@@ -598,11 +598,7 @@ fun Select(
     applyAttrs = {
         if (multiple) multiple()
         if (attrs != null) {
-            val selectAttrsBuilder = with(SelectAttrsScope()) {
-                attrs()
-                this
-            }
-            copyFrom(selectAttrsBuilder)
+            SelectAttrsScope(this).attrs()
         }
     },
     content = content
@@ -682,7 +678,7 @@ fun TextArea(
     TagElement(
         elementBuilder = TextArea,
         applyAttrs = {
-            val textAreaAttrsBuilder = TextAreaAttrsScope()
+            val textAreaAttrsBuilder = TextAreaAttrsScope(this)
             textAreaAttrsBuilder.onInput {
                 // controlled state needs to be restored after every input
                 keyForRestoringControlledState.value = keyForRestoringControlledState.value + 1
@@ -693,8 +689,6 @@ fun TextArea(
             if (firstProvidedValueWasNotNull) {
                 textAreaAttrsBuilder.value(value ?: "")
             }
-
-            this.copyFrom(textAreaAttrsBuilder)
         },
         content = {
             DisposableEffect(keyForRestoringControlledState.value) {
@@ -1006,7 +1000,7 @@ fun <K> Input(
     TagElement(
         elementBuilder = Input,
         applyAttrs = {
-            val inputAttrsBuilder = InputAttrsScope(type)
+            val inputAttrsBuilder = InputAttrsScope(type, this)
             inputAttrsBuilder.type(type)
             inputAttrsBuilder.onInput {
                 // controlled state needs to be restored after every input
@@ -1014,8 +1008,6 @@ fun <K> Input(
             }
 
             inputAttrsBuilder.attrs()
-
-            this.copyFrom(inputAttrsBuilder)
         },
         content = {
             if (type == InputType.Radio) {

web/core/src/jsTest/kotlin/elements/AttributesTests.kt

@@ -164,7 +164,10 @@ class AttributesTests {
         assertEquals(attrsScopeCopyFrom.styleScope, copyToAttrsScope.styleScope)
         assertEquals(attrsScopeCopyFrom.refEffect, copyToAttrsScope.refEffect)
         assertEquals(attrsScopeCopyFrom.propertyUpdates, copyToAttrsScope.propertyUpdates)
-        assertEquals(attrsScopeCopyFrom.collectListeners(), copyToAttrsScope.collectListeners())
+        assertEquals(
+            attrsScopeCopyFrom.eventsListenerScopeBuilder.collectListeners(),
+            copyToAttrsScope.eventsListenerScopeBuilder.collectListeners()
+        )
     }
 
     @Test
@@ -186,7 +189,7 @@ class AttributesTests {
         assertEquals("id1", copyToAttrsScope.attributesMap["id"])
         assertEquals(StyleScopeBuilder().apply { width(100.px) }, copyToAttrsScope.styleScope)
 
-        val listeners = copyToAttrsScope.collectListeners()
+        val listeners = copyToAttrsScope.eventsListenerScopeBuilder.collectListeners()
         assertEquals(1, listeners.size)
         assertEquals("click", listeners[0].event)
     }

web/settings.gradle.kts

@@ -77,7 +77,6 @@ if (extra["compose.web.tests.skip.benchmarks"]!!.toString().toBoolean() != true)
 
 if (extra["compose.web.buildSamples"]!!.toString().toBoolean() == true) {
     println("building with examples")
-    module(":examples:falling-balls-web", "../examples/falling-balls-web")
     module(":examples:compose-web-lp", "../examples/web-landing")
     module(":examples:web-compose-bird", "../examples/web-compose-bird")
     module(":examples:web-with-react", "../examples/web-with-react")