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Code Releases Activity Actions

Reintroduce Compose State to AppState

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This commit is contained in:
Reinout Meliesie 2024-12-19 15:22:01 +01:00
parent 5bece30b4b
commit 8413cf7ae7
Signed by: zedfrigg
GPG key ID: 3AFCC06481308BC6
2 changed files with 18 additions and 20 deletions
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27
app/src/main/java/com/kernelmaft/zanbur/app-state.kt
View file

@ -1,25 +1,26 @@
package com.kernelmaft.zanbur
import androidx.compose.runtime.*
object AppState {
val groups : List <Group> get () = groupsAsMutable
private var groupsAsMutable : List <Group> = emptyList ()
private val subscribers : MutableList < ( List <Group> ) -> Unit > = mutableListOf ()
fun subscribe ( subscriber : ( List <Group> ) -> Unit ) = subscribers . add (subscriber)
fun addGroup ( group : Group ) {
groupsAsMutable += group
subscribers . forEach { it (groups) }
}
// The index of a group in this list is always equal to its ID
val groups : State < List <Group> > get () = groupsAsMutable
private val groupsAsMutable : MutableState < List <Group> > = mutableStateOf ( emptyList () )
fun setCurrentScene ( groupId : Int , scene : Scene ) {
groupsAsMutable = groupsAsMutable . mapIndexed { index , group ->
groupsAsMutable . value = groupsAsMutable . value . mapIndexed { index , group ->
if ( index == groupId ) group . copy ( currentScene = scene )
else group
}
subscribers . forEach { it (groups) }
}
fun addGroup ( group : Group ) {
val newGroups = groupsAsMutable . value . toMutableList ()
// Wow this is sooo much better than Java
if ( newGroups . getOrNull ( group . id ) != null ) newGroups . removeAt ( group . id )
newGroups . add ( group . id , group )
groupsAsMutable . value = newGroups
}
}

11
app/src/main/java/com/kernelmaft/zanbur/main.kt
View file

@ -3,7 +3,6 @@ package com.kernelmaft.zanbur
import android.os.*
import androidx.activity.compose.*
import androidx.compose.foundation.layout.*
import androidx.compose.runtime.*
import androidx.compose.ui.*
import androidx.compose.ui.unit.*
import androidx.datastore.preferences.*
@ -23,14 +22,12 @@ class MainActivity : EdgeToEdgeActivity () {
Config . groups . forEach { AppState . addGroup (it) }
val groups = mutableStateOf ( AppState . groups )
AppState . subscribe { groups . value = it }
lifecycleScope . launch (IO) {
val prefs = dataStore . data . firstOrNull ()
val savedSceneName = prefs ?. get ( stringPreferencesKey ("scene") )
if ( savedSceneName != null ) {
val savedScene = AppState . groups [0] . scenes . find { it . name == savedSceneName }
val savedScene = AppState . groups . value [0] . scenes
. find { it . name == savedSceneName }
savedScene ?. let { AppState . setCurrentScene ( 0 , it ) }
}
}
@ -38,7 +35,7 @@ class MainActivity : EdgeToEdgeActivity () {
setContent {
AppFrame {
Column ( Modifier . width ( 300 . dp ) ) {
groups . value . forEach { group ->
AppState . groups . value . forEach { group ->
SceneSwitcher (group) { newScene ->
AppState . setCurrentScene ( group . id , newScene )
publishSceneChange ( group , newScene )
@ -54,7 +51,7 @@ class MainActivity : EdgeToEdgeActivity () {
override fun onStop () {
super . onStop ()
val currentScene = AppState . groups [0] . currentScene
val currentScene = AppState . groups . value [0] . currentScene
if ( currentScene != null ) lifecycleScope . launch (IO) {
dataStore . edit {
it [ stringPreferencesKey ("scene") ] = currentScene . name