Appyx : quick management of PermanentChild

appnav/src/main/kotlin/io/element/android/appnav/LoggedInFlowNode.kt

@@ -26,8 +26,10 @@ import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.lifecycleScope
 import androidx.lifecycle.repeatOnLifecycle
 import com.bumble.appyx.core.composable.Children
+import com.bumble.appyx.core.composable.PermanentChild
 import com.bumble.appyx.core.lifecycle.subscribe
 import com.bumble.appyx.core.modality.BuildContext
+import com.bumble.appyx.core.navigation.model.permanent.PermanentNavModel
 import com.bumble.appyx.core.node.Node
 import com.bumble.appyx.core.plugin.Plugin
 import com.bumble.appyx.core.plugin.plugins
@@ -95,6 +97,10 @@ class LoggedInFlowNode @AssistedInject constructor(
         initialElement = NavTarget.RoomList,
         savedStateMap = buildContext.savedStateMap,
     ),
+    permanentNavModel = PermanentNavModel(
+        NavTarget.Permanent,
+        savedStateMap = buildContext.savedStateMap,
+    ),
     buildContext = buildContext,
     plugins = plugins
 ) {
@@ -328,7 +334,7 @@ class LoggedInFlowNode @AssistedInject constructor(
             val isFtueDisplayed by ftueState.shouldDisplayFlow.collectAsState()
 
             if (!isFtueDisplayed) {
-                PermanentChild(navTarget = NavTarget.Permanent)
+                PermanentChild(permanentNavModel = permanentNavModel, navTarget = NavTarget.Permanent)
             }
         }
     }

libraries/architecture/src/main/kotlin/io/element/android/libraries/architecture/BackstackNode.kt

@@ -19,6 +19,8 @@ package io.element.android.libraries.architecture
 import androidx.compose.runtime.Stable
 import com.bumble.appyx.core.children.ChildEntry
 import com.bumble.appyx.core.modality.BuildContext
+import com.bumble.appyx.core.navigation.model.combined.plus
+import com.bumble.appyx.core.navigation.model.permanent.PermanentNavModel
 import com.bumble.appyx.core.node.Node
 import com.bumble.appyx.core.node.ParentNode
 import com.bumble.appyx.core.plugin.Plugin
@@ -33,10 +35,11 @@ import com.bumble.appyx.navmodel.backstack.BackStack
 abstract class BackstackNode<NavTarget : Any>(
     val backstack: BackStack<NavTarget>,
     buildContext: BuildContext,
+    plugins: List<Plugin>,
+    val permanentNavModel: PermanentNavModel<NavTarget> = PermanentNavModel(emptySet(), null),
     childKeepMode: ChildEntry.KeepMode = ChildEntry.KeepMode.KEEP,
-    plugins: List<Plugin>
 ) : ParentNode<NavTarget>(
-    navModel = backstack,
+    navModel = backstack + permanentNavModel,
     buildContext = buildContext,
     plugins = plugins,
     childKeepMode = childKeepMode,