simplify participant data structure

move ParticipantUiState into ParticipantDisplayItem

Signed-off-by: Marcel Hibbe <dev@mhibbe.de>

app/src/main/java/com/nextcloud/talk/activities/CallActivity.kt

@@ -48,12 +48,12 @@ import androidx.activity.result.contract.ActivityResultContracts
 import androidx.annotation.DrawableRes
 import androidx.appcompat.app.AlertDialog
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.mutableStateListOf
 import androidx.core.graphics.drawable.DrawableCompat
 import androidx.core.graphics.toColorInt
 import androidx.core.net.toUri
 import androidx.lifecycle.ViewModelProvider
-import androidx.lifecycle.lifecycleScope
 import autodagger.AutoInjector
 import com.bluelinelabs.logansquare.LoganSquare
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
@@ -73,7 +73,6 @@ import com.nextcloud.talk.call.MessageSender
 import com.nextcloud.talk.call.MessageSenderMcu
 import com.nextcloud.talk.call.MessageSenderNoMcu
 import com.nextcloud.talk.call.MutableLocalCallParticipantModel
-import com.nextcloud.talk.call.ParticipantUiState
 import com.nextcloud.talk.call.ReactionAnimator
 import com.nextcloud.talk.call.components.ParticipantGrid
 import com.nextcloud.talk.chat.ChatActivity
@@ -154,7 +153,6 @@ import io.reactivex.Observer
 import io.reactivex.android.schedulers.AndroidSchedulers
 import io.reactivex.disposables.Disposable
 import io.reactivex.schedulers.Schedulers
-import kotlinx.coroutines.launch
 import okhttp3.Cache
 import org.apache.commons.lang3.StringEscapeUtils
 import org.greenrobot.eventbus.Subscribe
@@ -308,8 +306,6 @@ class CallActivity : CallBaseActivity() {
     private var mediaPlayer: MediaPlayer? = null
 
     private val participantItems = mutableStateListOf<ParticipantDisplayItem>()
-    private val participantUiStates = mutableStateListOf<ParticipantUiState>()
-
     private var binding: CallActivityBinding? = null
     private var audioOutputDialog: AudioOutputDialog? = null
     private var moreCallActionsDialog: MoreCallActionsDialog? = null
@@ -966,8 +962,9 @@ class CallActivity : CallBaseActivity() {
 
         binding!!.composeParticipantGrid.setContent {
             MaterialTheme {
+                val participantUiStates = participantItems.map { it.uiStateFlow.collectAsState().value }
                 ParticipantGrid(
-                    participants = participantUiStates.toList(),
+                    participantUiStates = participantUiStates,
                     eglBase = rootEglBase!!,
                     isVoiceOnlyCall = isVoiceOnlyCall
                 ) {
@@ -2555,7 +2552,6 @@ class CallActivity : CallBaseActivity() {
         val participant = participantItems.find { it.sessionKey == key }
         participant?.destroy()
         participantItems.removeAll { it.sessionKey == key }
-        participantUiStates.removeAll { it.sessionKey == key }
         initGrid()
     }
 
@@ -2674,17 +2670,6 @@ class CallActivity : CallBaseActivity() {
 
         if (participantItems.none { it.sessionKey == sessionKey }) {
             participantItems.add(participantDisplayItem)
-
-            lifecycleScope.launch {
-                participantDisplayItem.uiStateFlow.collect { uiState ->
-                    val index = participantUiStates.indexOfFirst { it.sessionKey == sessionKey }
-                    if (index >= 0) {
-                        participantUiStates[index] = uiState
-                    } else {
-                        participantUiStates.add(uiState)
-                    }
-                }
-            }
         }
 
         initGrid()

app/src/main/java/com/nextcloud/talk/adapters/ParticipantDisplayItem.kt

@@ -15,7 +15,6 @@ import android.text.TextUtils
 import android.util.Log
 import android.view.ViewGroup
 import com.nextcloud.talk.call.CallParticipantModel
-import com.nextcloud.talk.call.ParticipantUiState
 import com.nextcloud.talk.call.RaisedHand
 import com.nextcloud.talk.models.json.participants.Participant.ActorType
 import com.nextcloud.talk.utils.ApiUtils.getUrlForAvatar
@@ -30,6 +29,17 @@ import org.webrtc.MediaStream
 import org.webrtc.PeerConnection.IceConnectionState
 import org.webrtc.SurfaceViewRenderer
 
+data class ParticipantUiState(
+    val sessionKey: String,
+    val nick: String,
+    val isConnected: Boolean,
+    val isAudioEnabled: Boolean,
+    val isStreamEnabled: Boolean,
+    val raisedHand: Boolean,
+    val avatarUrl: String?,
+    val mediaStream: MediaStream?
+)
+
 @Suppress("LongParameterList")
 class ParticipantDisplayItem(
     private val context: Context,

app/src/main/java/com/nextcloud/talk/call/ParticipantUiState.kt

@@ -1,21 +0,0 @@
-/*
- * Nextcloud Talk - Android Client
- *
- * SPDX-FileCopyrightText: 2025 Marcel Hibbe <dev@mhibbe.de>
- * SPDX-License-Identifier: GPL-3.0-or-later
- */
-
-package com.nextcloud.talk.call
-
-import org.webrtc.MediaStream
-
-data class ParticipantUiState(
-    val sessionKey: String,
-    val nick: String,
-    val isConnected: Boolean,
-    val isAudioEnabled: Boolean,
-    val isStreamEnabled: Boolean,
-    val raisedHand: Boolean,
-    val avatarUrl: String?,
-    val mediaStream: MediaStream?
-)

app/src/main/java/com/nextcloud/talk/call/components/AvatarWithFallback.kt

@@ -22,7 +22,7 @@ import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import coil.compose.AsyncImage
-import com.nextcloud.talk.call.ParticipantUiState
+import com.nextcloud.talk.adapters.ParticipantUiState
 
 @Composable
 fun AvatarWithFallback(participant: ParticipantUiState, modifier: Modifier = Modifier) {

app/src/main/java/com/nextcloud/talk/call/components/ParticipantGrid.kt

@@ -5,6 +5,8 @@
  * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
+@file:Suppress("MagicNumber", "TooManyFunctions")
+
 package com.nextcloud.talk.call.components
 
 import android.content.res.Configuration
@@ -23,16 +25,15 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalConfiguration
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
-import com.nextcloud.talk.call.ParticipantUiState
+import com.nextcloud.talk.adapters.ParticipantUiState
 import org.webrtc.EglBase
 import kotlin.math.ceil
 
-@Suppress("MagicNumber", "TooManyFunctions")
 @Composable
 fun ParticipantGrid(
     modifier: Modifier = Modifier,
     eglBase: EglBase?,
-    participants: List<ParticipantUiState>,
+    participantUiStates: List<ParticipantUiState>,
     isVoiceOnlyCall: Boolean,
     onClick: () -> Unit
 ) {
@@ -43,19 +44,19 @@ fun ParticipantGrid(
 
     val columns =
         if (isPortrait) {
-            when (participants.size) {
+            when (participantUiStates.size) {
                 1, 2, 3 -> 1
                 else -> 2
             }
         } else {
-            when (participants.size) {
+            when (participantUiStates.size) {
                 1 -> 1
                 2, 4 -> 2
                 else -> 3
             }
         }
 
-    val rows = ceil(participants.size / columns.toFloat()).toInt()
+    val rows = ceil(participantUiStates.size / columns.toFloat()).toInt()
 
     val heightForNonGridComponents = if (isVoiceOnlyCall) {
         // this is a workaround for now. It should ~summarize the height of callInfosLinearLayout and callControls
@@ -87,11 +88,11 @@ fun ParticipantGrid(
         contentPadding = PaddingValues(vertical = edgePadding)
     ) {
         items(
-            participants,
+            participantUiStates,
             key = { it.sessionKey }
         ) { participant ->
             ParticipantTile(
-                participant = participant,
+                participantUiState = participant,
                 modifier = Modifier
                     .height(itemHeight)
                     .fillMaxWidth(),
@@ -102,84 +103,76 @@ fun ParticipantGrid(
     }
 }
 
-@Suppress("MagicNumber")
 @Preview
 @Composable
 fun ParticipantGridPreview() {
     ParticipantGrid(
-        participants = getTestParticipants(1),
+        participantUiStates = getTestParticipants(1),
         eglBase = null,
         isVoiceOnlyCall = false
     ) {}
 }
 
-@Suppress("MagicNumber")
 @Preview
 @Composable
 fun TwoParticipants() {
     ParticipantGrid(
-        participants = getTestParticipants(2),
+        participantUiStates = getTestParticipants(2),
         eglBase = null,
         isVoiceOnlyCall = false
     ) {}
 }
 
-@Suppress("MagicNumber")
 @Preview
 @Composable
 fun ThreeParticipants() {
     ParticipantGrid(
-        participants = getTestParticipants(3),
+        participantUiStates = getTestParticipants(3),
         eglBase = null,
         isVoiceOnlyCall = false
     ) {}
 }
 
-@Suppress("MagicNumber")
 @Preview
 @Composable
 fun FourParticipants() {
     ParticipantGrid(
-        participants = getTestParticipants(4),
+        participantUiStates = getTestParticipants(4),
         eglBase = null,
         isVoiceOnlyCall = false
     ) {}
 }
 
-@Suppress("MagicNumber")
 @Preview
 @Composable
 fun FiveParticipants() {
     ParticipantGrid(
-        participants = getTestParticipants(5),
+        participantUiStates = getTestParticipants(5),
         eglBase = null,
         isVoiceOnlyCall = false
     ) {}
 }
 
-@Suppress("MagicNumber")
 @Preview
 @Composable
 fun SevenParticipants() {
     ParticipantGrid(
-        participants = getTestParticipants(7),
+        participantUiStates = getTestParticipants(7),
         eglBase = null,
         isVoiceOnlyCall = false
     ) {}
 }
 
-@Suppress("MagicNumber")
 @Preview
 @Composable
 fun FiftyParticipants() {
     ParticipantGrid(
-        participants = getTestParticipants(50),
+        participantUiStates = getTestParticipants(50),
         eglBase = null,
         isVoiceOnlyCall = false
     ) {}
 }
 
-@Suppress("MagicNumber")
 @Preview(
     showBackground = false,
     heightDp = 360,
@@ -188,13 +181,12 @@ fun FiftyParticipants() {
 @Composable
 fun OneParticipantLandscape() {
     ParticipantGrid(
-        participants = getTestParticipants(1),
+        participantUiStates = getTestParticipants(1),
         eglBase = null,
         isVoiceOnlyCall = false
     ) {}
 }
 
-@Suppress("MagicNumber")
 @Preview(
     showBackground = false,
     heightDp = 360,
@@ -203,13 +195,12 @@ fun OneParticipantLandscape() {
 @Composable
 fun TwoParticipantsLandscape() {
     ParticipantGrid(
-        participants = getTestParticipants(2),
+        participantUiStates = getTestParticipants(2),
         eglBase = null,
         isVoiceOnlyCall = false
     ) {}
 }
 
-@Suppress("MagicNumber")
 @Preview(
     showBackground = false,
     heightDp = 360,
@@ -218,13 +209,12 @@ fun TwoParticipantsLandscape() {
 @Composable
 fun ThreeParticipantsLandscape() {
     ParticipantGrid(
-        participants = getTestParticipants(3),
+        participantUiStates = getTestParticipants(3),
         eglBase = null,
         isVoiceOnlyCall = false
     ) {}
 }
 
-@Suppress("MagicNumber")
 @Preview(
     showBackground = false,
     heightDp = 360,
@@ -233,13 +223,12 @@ fun ThreeParticipantsLandscape() {
 @Composable
 fun FourParticipantsLandscape() {
     ParticipantGrid(
-        participants = getTestParticipants(4),
+        participantUiStates = getTestParticipants(4),
         eglBase = null,
         isVoiceOnlyCall = false
     ) {}
 }
 
-@Suppress("MagicNumber")
 @Preview(
     showBackground = false,
     heightDp = 360,
@@ -248,13 +237,12 @@ fun FourParticipantsLandscape() {
 @Composable
 fun SevenParticipantsLandscape() {
     ParticipantGrid(
-        participants = getTestParticipants(7),
+        participantUiStates = getTestParticipants(7),
         eglBase = null,
         isVoiceOnlyCall = false
     ) {}
 }
 
-@Suppress("MagicNumber")
 @Preview(
     showBackground = false,
     heightDp = 360,
@@ -263,7 +251,7 @@ fun SevenParticipantsLandscape() {
 @Composable
 fun FiftyParticipantsLandscape() {
     ParticipantGrid(
-        participants = getTestParticipants(50),
+        participantUiStates = getTestParticipants(50),
         eglBase = null,
         isVoiceOnlyCall = false
     ) {}

app/src/main/java/com/nextcloud/talk/call/components/ParticipantTile.kt

@@ -29,7 +29,7 @@ import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import com.nextcloud.talk.R
-import com.nextcloud.talk.call.ParticipantUiState
+import com.nextcloud.talk.adapters.ParticipantUiState
 import com.nextcloud.talk.utils.ColorGenerator
 import org.webrtc.EglBase
 
@@ -38,28 +38,28 @@ const val NICK_BLUR_RADIUS = 4f
 
 @Composable
 fun ParticipantTile(
-    participant: ParticipantUiState,
+    participantUiState: ParticipantUiState,
     eglBase: EglBase?,
     modifier: Modifier = Modifier,
     isVoiceOnlyCall: Boolean
 ) {
-    val colorInt = ColorGenerator.shared.usernameToColor(participant.nick)
+    val colorInt = ColorGenerator.shared.usernameToColor(participantUiState.nick)
 
     Box(
         modifier = modifier
             .clip(RoundedCornerShape(12.dp))
             .background(Color(colorInt))
     ) {
-        if (!isVoiceOnlyCall && participant.isStreamEnabled && participant.mediaStream != null) {
+        if (!isVoiceOnlyCall && participantUiState.isStreamEnabled && participantUiState.mediaStream != null) {
-            WebRTCVideoView(participant, eglBase)
+            WebRTCVideoView(participantUiState, eglBase)
         } else {
             AvatarWithFallback(
-                participant = participant,
+                participant = participantUiState,
                 modifier = Modifier.align(Alignment.Center)
             )
         }
 
-        if (participant.raisedHand) {
+        if (participantUiState.raisedHand) {
             Icon(
                 painter = painterResource(id = R.drawable.ic_hand_back_left),
                 contentDescription = "Raised Hand",
@@ -71,7 +71,7 @@ fun ParticipantTile(
             )
         }
 
-        if (!participant.isAudioEnabled) {
+        if (!participantUiState.isAudioEnabled) {
             Icon(
                 painter = painterResource(id = R.drawable.ic_mic_off_white_24px),
                 contentDescription = "Mic Off",
@@ -84,7 +84,7 @@ fun ParticipantTile(
         }
 
         Text(
-            text = participant.nick,
+            text = participantUiState.nick,
             color = Color.White,
             modifier = Modifier
                 .align(Alignment.BottomStart)
@@ -98,7 +98,7 @@ fun ParticipantTile(
             )
         )
 
-        if (!participant.isConnected) {
+        if (!participantUiState.isConnected) {
             CircularProgressIndicator(
                 modifier = Modifier.align(Alignment.Center)
             )
@@ -120,7 +120,7 @@ fun ParticipantTilePreview() {
         mediaStream = null
     )
     ParticipantTile(
-        participant = participant,
+        participantUiState = participant,
         modifier = Modifier
             .fillMaxWidth()
             .height(300.dp),

app/src/main/java/com/nextcloud/talk/call/components/WebRTCVideoView.kt

@@ -11,7 +11,7 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.viewinterop.AndroidView
-import com.nextcloud.talk.call.ParticipantUiState
+import com.nextcloud.talk.adapters.ParticipantUiState
 import org.webrtc.EglBase
 import org.webrtc.SurfaceViewRenderer