Rename ParentNode & Node to Node and LeafNode

CHANGELOG.md

@@ -14,8 +14,9 @@ Please refer to [2.0.0-alpha10 – Migration guide](2.0.0-alpha10.md)
 - [#642](https://github.com/bumble-tech/appyx/pull/642) – Renamings
 - [#643](https://github.com/bumble-tech/appyx/pull/643) – Unify AppyxComponent composable between appyx-navigation and appyx-interactions modules
 - [#651](https://github.com/bumble-tech/appyx/pull/651) - Keep only one instance of SaveStateMap typealias and moved it to `com.bumble.appyx.utils.multiplatform` package 
-- [#654](https://github.com/bumble-tech/appyx/pull/654) - Renamings 
 - [#652](https://github.com/bumble-tech/appyx/pull/652) - KSP processor renamed from `mutable-ui-processor` to `appyx-processor`
+- [#654](https://github.com/bumble-tech/appyx/pull/654) - Renamings 
+- [#657](https://github.com/bumble-tech/appyx/pull/657) - Rename ParentNode & Node to Node and LeafNode 
 
 ### Fixed
 

appyx-navigation/android/src/androidTest/kotlin/com/bumble/appyx/navigation/AppyxTestScenario.kt

@@ -14,7 +14,7 @@ import com.bumble.appyx.utils.testing.ui.rules.AppyxTestActivity
 import java.util.concurrent.CountDownLatch
 import java.util.concurrent.TimeUnit
 
-class AppyxTestScenario<T : Node>(
+class AppyxTestScenario<T : Node<*>>(
     private val composeTestRule: ComposeTestRule = createEmptyComposeRule(),
     /** Add decorations like custom theme or CompositionLocalProvider. Do not forget to invoke `content()`. */
     private val decorator: (@Composable (content: @Composable () -> Unit) -> Unit) = { content -> content() },

appyx-navigation/android/src/androidTest/kotlin/com/bumble/appyx/navigation/node/PermanentChildTest.kt

@@ -13,7 +13,7 @@ import com.bumble.appyx.navigation.AppyxTestScenario
 import com.bumble.appyx.navigation.children.nodeOrNull
 import com.bumble.appyx.navigation.composable.PermanentChild
 import com.bumble.appyx.navigation.modality.NodeContext
-import com.bumble.appyx.navigation.node.PermanentChildTest.TestParentNode.Child
+import com.bumble.appyx.navigation.node.PermanentChildTest.TestNode.Child
 import com.bumble.appyx.utils.multiplatform.Parcelable
 import com.bumble.appyx.utils.multiplatform.Parcelize
 import org.junit.Assert.assertEquals
@@ -22,8 +22,8 @@ import org.junit.Test
 
 class PermanentChildTest {
 
-    var nodeFactory: (nodeContext: NodeContext) -> TestParentNode = {
-        TestParentNode(nodeContext = it)
+    var nodeFactory: (nodeContext: NodeContext) -> TestNode = {
+        TestNode(nodeContext = it)
     }
 
     @get:Rule
@@ -65,7 +65,7 @@ class PermanentChildTest {
 
     private fun createPermanentAppyxComponentWithInteractionKey() {
         nodeFactory = {
-            TestParentNode(
+            TestNode(
                 nodeContext = it,
                 permanentAppyxComponent = PermanentAppyxComponent(
                     savedStateMap = null,
@@ -76,11 +76,11 @@ class PermanentChildTest {
 
     }
 
-    class TestParentNode(
+    class TestNode(
         nodeContext: NodeContext,
         private val permanentAppyxComponent: PermanentAppyxComponent<Child> =
             PermanentAppyxComponent(savedStateMap = nodeContext.savedStateMap)
-    ) : ParentNode<Child>(
+    ) : Node<Child>(
         nodeContext = nodeContext,
         appyxComponent = permanentAppyxComponent
     ) {
@@ -90,7 +90,7 @@ class PermanentChildTest {
 
         var renderPermanentChild by mutableStateOf(true)
 
-        override fun buildChildNode(navTarget: Child, nodeContext: NodeContext): Node =
+        override fun buildChildNode(navTarget: Child, nodeContext: NodeContext): Node<*> =
             node(nodeContext) { modifier ->
                 BasicText(
                     text = navTarget.toString(),

appyx-navigation/common/src/androidMain/kotlin/com/bumble/appyx/navigation/integration/AndroidNodeHost.kt

@@ -12,13 +12,13 @@ import com.bumble.appyx.utils.customisations.NodeCustomisationDirectoryImpl
 
 
 /**
- * Composable function to host [Node].
+ * Composable function to host [Node<*>].
  *
  * This wrapper uses [LocalConfiguration] to provide [ScreenSize] automatically.
  */
 @Suppress("ComposableParamOrder") // detekt complains as 'factory' param isn't a pure lambda
 @Composable
-fun <N : Node> NodeHost(
+fun <N : Node<*>> NodeHost(
     lifecycle: Lifecycle,
     integrationPoint: IntegrationPoint,
     modifier: Modifier = Modifier,

appyx-navigation/common/src/androidMain/kotlin/com/bumble/appyx/navigation/node/AndroidNodeExt.kt

@@ -2,5 +2,5 @@ package com.bumble.appyx.navigation.node
 
 import com.bumble.appyx.navigation.platform.PlatformLifecycleRegistry
 
-val Node.androidLifecycle: androidx.lifecycle.Lifecycle
+val Node<*>.androidLifecycle: androidx.lifecycle.Lifecycle
     get() = (lifecycle as PlatformLifecycleRegistry).androidLifecycleRegistry

appyx-navigation/common/src/commonMain/kotlin/com/bumble/appyx/navigation/builder/Builder.kt

@@ -6,5 +6,5 @@ import com.bumble.appyx.navigation.node.Node
 // Changing this to an interface would be a breaking change
 @Suppress("UnnecessaryAbstractClass")
 abstract class Builder<P> {
-    abstract fun build(nodeContext: NodeContext, payload: P): Node
+    abstract fun build(nodeContext: NodeContext, payload: P): Node<*>
 }

appyx-navigation/common/src/commonMain/kotlin/com/bumble/appyx/navigation/builder/SimpleBuilder.kt

@@ -6,5 +6,5 @@ import com.bumble.appyx.navigation.node.Node
 // Changing this to an interface would be a breaking change
 @Suppress("UnnecessaryAbstractClass")
 abstract class SimpleBuilder {
-    abstract fun build(nodeContext: NodeContext): Node
+    abstract fun build(nodeContext: NodeContext): Node<*>
 }

appyx-navigation/common/src/commonMain/kotlin/com/bumble/appyx/navigation/children/ChildAware.kt

@@ -4,7 +4,7 @@ import com.bumble.appyx.navigation.node.Node
 import com.bumble.appyx.navigation.plugin.NodeAware
 import kotlin.reflect.KClass
 
-interface ChildAware<N: Node> : NodeAware<N> {
+interface ChildAware<N: Node<*>> : NodeAware<N> {
 
     fun <T : Any> whenChildAttached(
         child: KClass<T>,

appyx-navigation/common/src/commonMain/kotlin/com/bumble/appyx/navigation/children/ChildAwareCallbackInfo.kt

@@ -10,15 +10,15 @@ import kotlin.reflect.safeCast
 
 internal sealed class ChildAwareCallbackInfo {
 
-    abstract fun onRegistered(activeNodes: List<Node>)
+    abstract fun onRegistered(activeNodes: List<Node<*>>)
 
     class Single<T : Any>(
         private val child: KClass<T>,
         private val callback: ChildCallback<T>,
         private val parentLifecycle: Lifecycle,
     ) : ChildAwareCallbackInfo() {
 
-        fun onNewNodeAppeared(newNode: Node) {
+        fun onNewNodeAppeared(newNode: Node<*>) {
             if (parentLifecycle.isDestroyed) return
             val castedNode = child.safeCast(newNode)
             if (castedNode != null) {
@@ -31,7 +31,7 @@ internal sealed class ChildAwareCallbackInfo {
             }
         }
 
-        override fun onRegistered(activeNodes: List<Node>) {
+        override fun onRegistered(activeNodes: List<Node<*>>) {
             activeNodes.forEach { node ->
                 onNewNodeAppeared(node)
             }
@@ -47,17 +47,17 @@ internal sealed class ChildAwareCallbackInfo {
     ) : ChildAwareCallbackInfo() {
 
         fun onNewNodeAppeared(
-            activeNodes: Collection<Node>,
-            newNode: Node,
-            ignoreNodes: Set<Node>,
+            activeNodes: Collection<Node<*>>,
+            newNode: Node<*>,
+            ignoreNodes: Set<Node<*>>,
         ) {
             val second = getOther(newNode) ?: return
             activeNodes
                 .filter { second.isInstance(it) && it != newNode && it !in ignoreNodes }
                 .forEach { notify(newNode, it) }
         }
 
-        override fun onRegistered(activeNodes: List<Node>) {
+        override fun onRegistered(activeNodes: List<Node<*>>) {
             activeNodes.forEachIndexed { index, node ->
                 onNewNodeAppeared(
                     // Do not include already handled nodes to avoid call duplication
@@ -68,7 +68,7 @@ internal sealed class ChildAwareCallbackInfo {
             }
         }
 
-        private fun notify(node1: Node, node2: Node) {
+        private fun notify(node1: Node<*>, node2: Node<*>) {
             if (parentLifecycle.isDestroyed) return
             val lifecycle =
                 MinimumCombinedLifecycle(
@@ -83,7 +83,7 @@ internal sealed class ChildAwareCallbackInfo {
             }
         }
 
-        private fun getOther(node: Node): KClass<*>? =
+        private fun getOther(node: Node<*>): KClass<*>? =
             when {
                 child1.isInstance(node) -> child2
                 child2.isInstance(node) -> child1

appyx-navigation/common/src/commonMain/kotlin/com/bumble/appyx/navigation/children/ChildAwareExt.kt

@@ -2,13 +2,13 @@ package com.bumble.appyx.navigation.children
 
 import com.bumble.appyx.navigation.node.Node
 
-inline fun <reified T : Node> ChildAware<*>.whenChildAttached(
+inline fun <reified T : Node<*>> ChildAware<*>.whenChildAttached(
     noinline callback: ChildCallback<T>,
 ) {
     whenChildAttached(T::class, callback)
 }
 
-inline fun <reified T1 : Node, reified T2 : Node> ChildAware<*>.whenChildrenAttached(
+inline fun <reified T1 : Node<*>, reified T2 : Node<*>> ChildAware<*>.whenChildrenAttached(
     noinline callback: ChildrenCallback<T1, T2>,
 ) {
     whenChildrenAttached(T1::class, T2::class, callback)

appyx-navigation/common/src/commonMain/kotlin/com/bumble/appyx/navigation/children/ChildAwareImpl.kt

@@ -4,8 +4,8 @@ import com.bumble.appyx.interactions.core.Element
 import com.bumble.appyx.navigation.lifecycle.DefaultPlatformLifecycleObserver
 import com.bumble.appyx.navigation.lifecycle.Lifecycle
 import com.bumble.appyx.navigation.lifecycle.isDestroyed
+import com.bumble.appyx.navigation.node.LeafNode
 import com.bumble.appyx.navigation.node.Node
-import com.bumble.appyx.navigation.node.ParentNode
 import com.bumble.appyx.navigation.withPrevious
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -14,7 +14,7 @@ import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.launch
 import kotlin.reflect.KClass
 
-class ChildAwareImpl<N : Node> : ChildAware<N> {
+class ChildAwareImpl<N : Node<*>> : ChildAware<N> {
 
     private val callbacks: MutableList<ChildAwareCallbackInfo> = ArrayList()
 
@@ -29,11 +29,11 @@ class ChildAwareImpl<N : Node> : ChildAware<N> {
         this.node = node
         lifecycle = node.lifecycle
         coroutineScope = lifecycle.coroutineScope
-        if (node is ParentNode<*>) {
+        if (node is LeafNode) {
+            children = MutableStateFlow(emptyMap())
+        } else {
             children = node.children
             coroutineScope.launch { observeChanges() }
-        } else {
-            children = MutableStateFlow(emptyMap())
         }
     }
 
@@ -43,7 +43,7 @@ class ChildAwareImpl<N : Node> : ChildAware<N> {
             .withPrevious()
             .collect { (previous, current) ->
                 val newNodes = current - previous.orEmpty()
-                val visitedSet = HashSet<Node>()
+                val visitedSet = HashSet<Node<*>>()
                 newNodes.forEach { node ->
                     notifyWhenChanged(node, current, visitedSet)
                     visitedSet.add(node)
@@ -78,7 +78,7 @@ class ChildAwareImpl<N : Node> : ChildAware<N> {
         callback.onRegistered(getCreatedNodes(children.value))
     }
 
-    private fun notifyWhenChanged(child: Node, nodes: Collection<Node>, ignore: Set<Node>) {
+    private fun notifyWhenChanged(child: Node<*>, nodes: Collection<Node<*>>, ignore: Set<Node<*>>) {
         for (callback in callbacks) {
             when (callback) {
                 is ChildAwareCallbackInfo.Double<*, *> -> callback.onNewNodeAppeared(

appyx-navigation/common/src/commonMain/kotlin/com/bumble/appyx/navigation/children/ChildEntry.kt

@@ -22,7 +22,7 @@ sealed class ChildEntry<T> {
     /** All public APIs should return this type of child which is ready to work with. */
     class Initialized<T>(
         override val key: Element<T>,
-        val node: Node,
+        val node: Node<*>,
     ) : ChildEntry<T>()
 
     class Suspended<T>(

appyx-navigation/common/src/commonMain/kotlin/com/bumble/appyx/navigation/children/ChildEntryExt.kt

@@ -2,7 +2,7 @@ package com.bumble.appyx.navigation.children
 
 import com.bumble.appyx.navigation.node.Node
 
-val <T> ChildEntry<T>.nodeOrNull: Node?
+val <T> ChildEntry<T>.nodeOrNull: Node<*>?
     get() =
         when (this) {
             is ChildEntry.Initialized -> node

appyx-navigation/common/src/commonMain/kotlin/com/bumble/appyx/navigation/children/ChildNodeBuilder.kt

@@ -5,5 +5,5 @@ import com.bumble.appyx.navigation.node.Node
 
 fun interface ChildNodeBuilder<NavTarget> {
 
-    fun buildChildNode(navTarget: NavTarget, nodeContext: NodeContext): Node
+    fun buildChildNode(navTarget: NavTarget, nodeContext: NodeContext): Node<*>
 }

appyx-navigation/common/src/commonMain/kotlin/com/bumble/appyx/navigation/children/ChildNodeCreationManager.kt

@@ -4,7 +4,7 @@ import com.bumble.appyx.interactions.core.Element
 import com.bumble.appyx.interactions.core.state.MutableSavedStateMap
 import com.bumble.appyx.navigation.modality.AncestryInfo
 import com.bumble.appyx.navigation.modality.NodeContext
-import com.bumble.appyx.navigation.node.ParentNode
+import com.bumble.appyx.navigation.node.Node
 import com.bumble.appyx.navigation.node.build
 import com.bumble.appyx.utils.multiplatform.SavedStateMap
 import com.bumble.appyx.utils.customisations.NodeCustomisationDirectory
@@ -25,23 +25,23 @@ internal class ChildNodeCreationManager<NavTarget : Any>(
     private val customisations: NodeCustomisationDirectory,
     private val keepMode: ChildEntry.KeepMode,
 ) {
-    private lateinit var parentNode: ParentNode<NavTarget>
+    private lateinit var node: Node<NavTarget>
     private val _children =
         MutableStateFlow<Map<Element<NavTarget>, ChildEntry<NavTarget>>>(emptyMap())
     val children: StateFlow<ChildEntryMap<NavTarget>> = _children.asStateFlow()
 
-    fun launch(parentNode: ParentNode<NavTarget>) {
-        this.parentNode = parentNode
+    fun launch(node: Node<NavTarget>) {
+        this.node = node
         savedStateMap.restoreChildren()?.also { restoredMap ->
             _children.update { restoredMap }
             savedStateMap = null
         }
-        syncAppyxComponentWithChildren(parentNode)
+        syncAppyxComponentWithChildren(node)
     }
 
-    private fun syncAppyxComponentWithChildren(parentNode: ParentNode<NavTarget>) {
-        parentNode.lifecycle.coroutineScope.launch {
-            parentNode.appyxComponent.elements.collect { state ->
+    private fun syncAppyxComponentWithChildren(node: Node<NavTarget>) {
+        node.lifecycle.coroutineScope.launch {
+            node.appyxComponent.elements.collect { state ->
                 val appyxComponentKeepKeys: Set<Element<NavTarget>>
                 val appyxComponentSuspendKeys: Set<Element<NavTarget>>
                 val appyxComponentKeys: Set<Element<NavTarget>>
@@ -165,9 +165,9 @@ internal class ChildNodeCreationManager<NavTarget : Any>(
 
     private fun childContext(savedState: SavedStateMap?): NodeContext =
         NodeContext(
-            ancestryInfo = AncestryInfo.Child(parentNode),
+            ancestryInfo = AncestryInfo.Child(node),
             savedStateMap = savedState,
-            customisations = customisations.getSubDirectoryOrSelf(parentNode::class),
+            customisations = customisations.getSubDirectoryOrSelf(node::class),
         )
 
     private fun childEntry(
@@ -180,7 +180,7 @@ internal class ChildNodeCreationManager<NavTarget : Any>(
         } else {
             ChildEntry.Initialized(
                 key = key,
-                node = parentNode
+                node = node
                     .buildChildNode(key.interactionTarget, childContext(savedState))
                     .build()
             )
@@ -192,7 +192,7 @@ internal class ChildNodeCreationManager<NavTarget : Any>(
             is ChildEntry.Suspended ->
                 ChildEntry.Initialized(
                     key = key,
-                    node = parentNode.buildChildNode(
+                    node = node.buildChildNode(
                         navTarget = key.interactionTarget,
                         nodeContext = childContext(savedState),
                     ).build()

appyx-navigation/common/src/commonMain/kotlin/com/bumble/appyx/navigation/clienthelper/interactor/Interactor.kt

@@ -7,7 +7,7 @@ import com.bumble.appyx.navigation.node.Node
 import com.bumble.appyx.navigation.plugin.NodeAware
 import com.bumble.appyx.navigation.plugin.NodeLifecycleAware
 
-open class Interactor<N : Node>(
+open class Interactor<N : Node<*>>(
     private val childAwareImpl: ChildAware<N> = ChildAwareImpl()
 ) : NodeAware<N>,
     NodeLifecycleAware,