Hide add more reaction button if user do not have permission to send reaction #2093

Also:
 - move `userHasPermissionToSendMessage` to `TimelineRoomInfo`
 - remove `canReply` parameter which can be computed from other params.

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/TimelinePresenter.kt

@@ -98,6 +98,7 @@ class TimelinePresenter @AssistedInject constructor(
         val paginationState by timeline.paginationState.collectAsState()
         val syncUpdateFlow = room.syncUpdateFlow.collectAsState()
         val userHasPermissionToSendMessage by room.canSendMessageAsState(type = MessageEventType.ROOM_MESSAGE, updateKey = syncUpdateFlow.value)
+        val userHasPermissionToSendReaction by room.canSendMessageAsState(type = MessageEventType.REACTION_SENT, updateKey = syncUpdateFlow.value)
 
         val prevMostRecentItemId = rememberSaveable { mutableStateOf<String?>(null) }
         val newItemState = remember { mutableStateOf(NewEventState.None) }
@@ -175,12 +176,18 @@ class TimelinePresenter @AssistedInject constructor(
                 .launchIn(this)
         }
 
+        val timelineRoomInfo by remember {
+            derivedStateOf {
+                TimelineRoomInfo(
+                    isDirect = room.isDirect,
+                    userHasPermissionToSendMessage = userHasPermissionToSendMessage,
+                    userHasPermissionToSendReaction = userHasPermissionToSendReaction,
+                )
+            }
+        }
         return TimelineState(
-            timelineRoomInfo = TimelineRoomInfo(
-                isDirect = room.isDirect
-            ),
+            timelineRoomInfo = timelineRoomInfo,
             highlightedEventId = highlightedEventId.value,
-            userHasPermissionToSendMessage = userHasPermissionToSendMessage,
             paginationState = paginationState,
             timelineItems = timelineItems,
             showReadReceipts = readReceiptsEnabled,

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/TimelineState.kt

@@ -30,7 +30,6 @@ data class TimelineState(
     val timelineRoomInfo: TimelineRoomInfo,
     val showReadReceipts: Boolean,
     val highlightedEventId: EventId?,
-    val userHasPermissionToSendMessage: Boolean,
     val paginationState: MatrixTimeline.PaginationState,
     val newEventState: NewEventState,
     val sessionState: SessionState,
@@ -40,4 +39,6 @@ data class TimelineState(
 @Immutable
 data class TimelineRoomInfo(
     val isDirect: Boolean,
+    val userHasPermissionToSendMessage: Boolean,
+    val userHasPermissionToSendReaction: Boolean,
 )

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/TimelineStateProvider.kt

@@ -55,7 +55,6 @@ fun aTimelineState(timelineItems: ImmutableList<TimelineItem> = persistentListOf
         beginningOfRoomReached = false,
     ),
     highlightedEventId = null,
-    userHasPermissionToSendMessage = true,
     newEventState = NewEventState.None,
     sessionState = aSessionState(
         isSessionVerified = true,
@@ -218,4 +217,6 @@ internal fun aTimelineRoomInfo(
     isDirect: Boolean = false,
 ) = TimelineRoomInfo(
     isDirect = isDirect,
+    userHasPermissionToSendMessage = true,
+    userHasPermissionToSendReaction = true,
 )

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/TimelineView.kt

@@ -123,7 +123,6 @@ fun TimelineView(
                     isLastOutgoingMessage = (timelineItem as? TimelineItem.Event)?.isMine == true
                         && state.timelineItems.first().identifier() == timelineItem.identifier(),
                     highlightedItem = state.highlightedEventId?.value,
-                    userHasPermissionToSendMessage = state.userHasPermissionToSendMessage,
                     onClick = onMessageClicked,
                     onLongClick = onMessageLongClicked,
                     onUserDataClick = onUserDataClicked,

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/ATimelineItemEventRow.kt

@@ -35,7 +35,6 @@ internal fun ATimelineItemEventRow(
     showReadReceipts = showReadReceipts,
     isLastOutgoingMessage = isLastOutgoingMessage,
     isHighlighted = isHighlighted,
-    canReply = true,
     onClick = {},
     onLongClick = {},
     onUserDataClick = {},

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/TimelineItemEventRow.kt

@@ -81,6 +81,7 @@ import io.element.android.features.messages.impl.timeline.model.event.TimelineIt
 import io.element.android.features.messages.impl.timeline.model.event.TimelineItemVideoContent
 import io.element.android.features.messages.impl.timeline.model.event.aTimelineItemImageContent
 import io.element.android.features.messages.impl.timeline.model.event.aTimelineItemTextContent
+import io.element.android.features.messages.impl.timeline.model.event.canBeRepliedTo
 import io.element.android.features.messages.impl.timeline.model.metadata
 import io.element.android.libraries.androidutils.system.openUrlInExternalApp
 import io.element.android.libraries.designsystem.colors.AvatarColorsProvider
@@ -112,7 +113,6 @@ fun TimelineItemEventRow(
     showReadReceipts: Boolean,
     isLastOutgoingMessage: Boolean,
     isHighlighted: Boolean,
-    canReply: Boolean,
     onClick: () -> Unit,
     onLongClick: () -> Unit,
     onUserDataClick: (UserId) -> Unit,
@@ -151,6 +151,7 @@ fun TimelineItemEventRow(
         } else {
             Spacer(modifier = Modifier.height(2.dp))
         }
+        val canReply = timelineRoomInfo.userHasPermissionToSendMessage && event.content.canBeRepliedTo()
         if (canReply) {
             val state: SwipeableActionsState = rememberSwipeableActionsState()
             val offset = state.offset.floatValue
@@ -335,6 +336,7 @@ private fun TimelineItemEventRowContent(
         if (event.reactionsState.reactions.isNotEmpty()) {
             TimelineItemReactionsView(
                 reactionsState = event.reactionsState,
+                userCanSendReaction = timelineRoomInfo.userHasPermissionToSendReaction,
                 isOutgoing = event.isMine,
                 onReactionClicked = onReactionClicked,
                 onReactionLongClicked = onReactionLongClicked,

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/TimelineItemGroupedEventsRow.kt

@@ -131,7 +131,6 @@ private fun TimelineItemGroupedEventsRowContent(
                         isLastOutgoingMessage = isLastOutgoingMessage,
                         highlightedItem = highlightedItem,
                         sessionState = sessionState,
-                        userHasPermissionToSendMessage = false,
                         onClick = onClick,
                         onLongClick = onLongClick,
                         inReplyToClick = inReplyToClick,

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/TimelineItemReactionsLayout.kt

@@ -26,8 +26,8 @@ import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.IntOffset
 import androidx.compose.ui.unit.dp
 import io.element.android.features.messages.impl.R
-import io.element.android.libraries.designsystem.preview.PreviewsDayNight
 import io.element.android.libraries.designsystem.preview.ElementPreview
+import io.element.android.libraries.designsystem.preview.PreviewsDayNight
 import io.element.android.libraries.designsystem.utils.CommonDrawables
 
 /**
@@ -46,7 +46,7 @@ import io.element.android.libraries.designsystem.utils.CommonDrawables
 @Composable
 fun TimelineItemReactionsLayout(
     expandButton: @Composable () -> Unit,
-    addMoreButton: @Composable () -> Unit,
+    addMoreButton: (@Composable () -> Unit)?,
     modifier: Modifier = Modifier,
     itemSpacing: Dp = 0.dp,
     rowSpacing: Dp = 0.dp,
@@ -82,21 +82,21 @@ fun TimelineItemReactionsLayout(
 
         // Used to render the collapsed state, this takes the rows inputted and adds the extra button to the last row,
         // removing only as many trailing reactions as needed to make space for it.
-        fun replaceTrailingItemsWithButtons(rowsIn: List<List<Placeable>>, expandButton: Placeable, addMoreButton: Placeable): List<List<Placeable>> {
+        fun replaceTrailingItemsWithButtons(rowsIn: List<List<Placeable>>, expandButton: Placeable, addMoreButton: Placeable?): List<List<Placeable>> {
             val rows = rowsIn.toMutableList()
             val lastRow = rows.last()
-            val buttonsWidth = expandButton.width + itemSpacing.toPx().toInt() + addMoreButton.width
+            val buttonsWidth = expandButton.width + itemSpacing.toPx().toInt() + (addMoreButton?.width ?: 0)
             var rowX = 0
             lastRow.forEachIndexed { i, placeable ->
                 val horizontalSpacing = if (i == 0) 0 else itemSpacing.toPx().toInt()
                 rowX += placeable.width + horizontalSpacing
                 if (rowX > constraints.maxWidth - (buttonsWidth + horizontalSpacing)) {
-                    val lastRowWithButton = lastRow.take(i) + listOf(expandButton, addMoreButton)
+                    val lastRowWithButton = lastRow.take(i) + listOfNotNull(expandButton, addMoreButton)
                     rows[rows.size - 1] = lastRowWithButton
                     return rows
                 }
             }
-            val lastRowWithButton = lastRow + listOf(expandButton, addMoreButton)
+            val lastRowWithButton = lastRow + listOfNotNull(expandButton, addMoreButton)
             rows[rows.size - 1] = lastRowWithButton
             return rows
         }
@@ -155,16 +155,15 @@ fun TimelineItemReactionsLayout(
         val newConstrains = constraints.copy(minHeight = maxHeight)
         reactionsPlaceables = subcompose(2, reactions).map { it.measure(newConstrains) }
         expandPlaceable = subcompose(3, expandButton).first().measure(newConstrains)
-        val addMorePlaceable = subcompose(4, addMoreButton).first().measure(newConstrains)
-
+        val addMorePlaceable = addMoreButton?.let { subcompose(4, addMoreButton).first().measure(newConstrains) }
 
         // Calculate the layout of the rows with the reactions button and add more button
-        val reactionsAndAddMore = calculateRows(reactionsPlaceables + listOf(addMorePlaceable))
+        val reactionsAndAddMore = calculateRows(reactionsPlaceables + listOfNotNull(addMorePlaceable))
         // If we have extended beyond the defined number of rows we are showing the expand/collapse ui
         if (rowsBeforeCollapsible?.let { reactionsAndAddMore.size > it } == true) {
             if (expanded) {
                 // Show all subviews with the add more button at the end
-                var reactionsAndButtons = calculateRows(reactionsPlaceables + listOf(expandPlaceable, addMorePlaceable))
+                var reactionsAndButtons = calculateRows(reactionsPlaceables + listOfNotNull(expandPlaceable, addMorePlaceable))
                 reactionsAndButtons = ensureCollapseAndAddMoreButtonsAreOnTheSameRow(reactionsAndButtons)
                 layoutRows(reactionsAndButtons)
             } else {

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/TimelineItemReactionsView.kt

@@ -31,8 +31,8 @@ import io.element.android.features.messages.impl.R
 import io.element.android.features.messages.impl.timeline.aTimelineItemReactions
 import io.element.android.features.messages.impl.timeline.model.AggregatedReaction
 import io.element.android.features.messages.impl.timeline.model.TimelineItemReactions
-import io.element.android.libraries.designsystem.preview.PreviewsDayNight
 import io.element.android.libraries.designsystem.preview.ElementPreview
+import io.element.android.libraries.designsystem.preview.PreviewsDayNight
 import io.element.android.libraries.designsystem.utils.CommonDrawables
 import kotlinx.collections.immutable.ImmutableList
 
@@ -40,6 +40,7 @@ import kotlinx.collections.immutable.ImmutableList
 fun TimelineItemReactionsView(
     reactionsState: TimelineItemReactions,
     isOutgoing: Boolean,
+    userCanSendReaction: Boolean,
     onReactionClicked: (emoji: String) -> Unit,
     onReactionLongClicked: (emoji: String) -> Unit,
     onMoreReactionsClicked: () -> Unit,
@@ -49,6 +50,7 @@ fun TimelineItemReactionsView(
     TimelineItemReactionsView(
         modifier = modifier,
         reactions = reactionsState.reactions,
+        userCanSendReaction = userCanSendReaction,
         expanded = expanded,
         isOutgoing = isOutgoing,
         onReactionClick = onReactionClicked,
@@ -61,6 +63,7 @@ fun TimelineItemReactionsView(
 @Composable
 private fun TimelineItemReactionsView(
     reactions: ImmutableList<AggregatedReaction>,
+    userCanSendReaction: Boolean,
     isOutgoing: Boolean,
     expanded: Boolean,
     onReactionClick: (emoji: String) -> Unit,
@@ -93,19 +96,26 @@ private fun TimelineItemReactionsView(
                     onLongClick = {}
                 )
             },
-            addMoreButton = {
-                MessagesReactionButton(
-                    content = MessagesReactionsButtonContent.Icon(CommonDrawables.ic_add_reaction),
-                    onClick = onMoreReactionsClick,
-                    onLongClick = {}
-                )
-            },
+            addMoreButton = if (userCanSendReaction) {
+                {
+                    MessagesReactionButton(
+                        content = MessagesReactionsButtonContent.Icon(CommonDrawables.ic_add_reaction),
+                        onClick = onMoreReactionsClick,
+                        onLongClick = {}
+                    )
+                }
+            } else null,
             reactions = {
                 reactions.forEach { reaction ->
                     CompositionLocalProvider(LocalLayoutDirection provides currentLayout) {
                         MessagesReactionButton(
                             content = MessagesReactionsButtonContent.Reaction(reaction = reaction),
-                            onClick = { onReactionClick(reaction.key) },
+                            onClick = {
+                                // Always allow user to redact their own reactions
+                                if (reaction.isHighlighted || userCanSendReaction) {
+                                    onReactionClick(reaction.key)
+                                }
+                            },
                             onLongClick = { onReactionLongClick(reaction.key) }
                         )
                     }
@@ -157,6 +167,7 @@ private fun ContentToPreview(
         reactionsState = TimelineItemReactions(
             reactions
         ),
+        userCanSendReaction = true,
         isOutgoing = isOutgoing,
         onReactionClicked = {},
         onReactionLongClicked = {},

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/TimelineItemRow.kt

@@ -18,11 +18,10 @@ package io.element.android.features.messages.impl.timeline.components
 
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
-import io.element.android.features.messages.impl.timeline.TimelineRoomInfo
 import io.element.android.features.messages.impl.timeline.TimelineEvents
+import io.element.android.features.messages.impl.timeline.TimelineRoomInfo
 import io.element.android.features.messages.impl.timeline.model.TimelineItem
 import io.element.android.features.messages.impl.timeline.model.event.TimelineItemStateContent
-import io.element.android.features.messages.impl.timeline.model.event.canBeRepliedTo
 import io.element.android.features.messages.impl.timeline.session.SessionState
 import io.element.android.libraries.matrix.api.core.EventId
 import io.element.android.libraries.matrix.api.core.UserId
@@ -34,7 +33,6 @@ internal fun TimelineItemRow(
     showReadReceipts: Boolean,
     isLastOutgoingMessage: Boolean,
     highlightedItem: String?,
-    userHasPermissionToSendMessage: Boolean,
     sessionState: SessionState,
     onUserDataClick: (UserId) -> Unit,
     onClick: (TimelineItem.Event) -> Unit,
@@ -77,7 +75,6 @@ internal fun TimelineItemRow(
                     showReadReceipts = showReadReceipts,
                     isLastOutgoingMessage = isLastOutgoingMessage,
                     isHighlighted = highlightedItem == timelineItem.identifier(),
-                    canReply = userHasPermissionToSendMessage && timelineItem.content.canBeRepliedTo(),
                     onClick = { onClick(timelineItem) },
                     onLongClick = { onLongClick(timelineItem) },
                     onUserDataClick = onUserDataClick,