Migrate from Bucket

app/src/main/java/ica/tees/mywallet/components/SystemBackButtonHandler.kt

@@ -0,0 +1,54 @@
+package ica.tees.mywallet.components
+
+import androidx.activity.ComponentActivity
+import androidx.activity.OnBackPressedCallback
+import androidx.activity.OnBackPressedDispatcherOwner
+import androidx.compose.runtime.*
+import androidx.compose.ui.platform.LocalLifecycleOwner
+
+private val LocalBackPressedDispatcher =
+    staticCompositionLocalOf<OnBackPressedDispatcherOwner?> { null }
+
+
+private class ComposableBackNavigationHandler(enabled: Boolean) : OnBackPressedCallback(enabled) {
+    lateinit var onBackPressed: () -> Unit
+
+    override fun handleOnBackPressed() {
+        onBackPressed()
+    }
+
+}
+
+
+@Composable
+internal fun ComposableHandler(
+    enabled: Boolean = true,
+    onBackPressed: () -> Unit
+) {
+    val dispatcher = (LocalBackPressedDispatcher.current ?: return).onBackPressedDispatcher
+
+    val handler = remember { ComposableBackNavigationHandler(enabled) }
+
+    DisposableEffect(dispatcher) {
+        dispatcher.addCallback(handler)
+
+
+        onDispose { handler.remove() }
+    }
+
+    LaunchedEffect(enabled) {
+        handler.isEnabled = enabled
+        handler.onBackPressed = onBackPressed
+    }
+}
+
+@Composable
+internal fun SystemBackButtonHandler(onBackPressed: () -> Unit) {
+    CompositionLocalProvider(
+        LocalBackPressedDispatcher provides LocalLifecycleOwner.current as ComponentActivity
+    ) {
+        ComposableHandler {
+            onBackPressed()
+        }
+    }
+}