Fix some recomposition issues on chips

app/src/main/java/com/todoroo/astrid/activity/TaskListFragment.kt

@@ -918,9 +918,9 @@ class TaskListFragment : Fragment(), OnRefreshListener, Toolbar.OnMenuItemClickL
         showDateTimePicker(task)
     }
 
-    override fun toggleSubtasks(task: TaskContainer, collapsed: Boolean) {
+    override fun toggleSubtasks(task: Long, collapsed: Boolean) {
         lifecycleScope.launch {
-            taskDao.setCollapsed(task.id, collapsed)
+            taskDao.setCollapsed(task, collapsed)
         }
     }
 

app/src/main/java/org/tasks/compose/Chip.kt

@@ -11,6 +11,7 @@ import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.outlined.Cancel
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.remember
 import androidx.compose.ui.ExperimentalComposeUiApi
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.alpha
@@ -36,7 +37,7 @@ fun Chip(
     clear: (() -> Unit)? = null,
 ) {
     Chip(
-        color = Color(colorProvider(theme)),
+        color = remember(theme) { Color(colorProvider(theme)) },
         text = if (showText) name else null,
         icon = if (showIcon && icon != null) icon else null,
         onClick = onClick,

app/src/main/java/org/tasks/compose/SubtaskChip.kt

@@ -1,27 +1,30 @@
 package org.tasks.compose
 
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
 import androidx.compose.ui.platform.LocalContext
 import org.tasks.R
-import org.tasks.data.TaskContainer
 import java.text.NumberFormat
 
 @Composable
 fun SubtaskChip(
-    task: TaskContainer,
+    collapsed: Boolean,
+    children: Int,
     compact: Boolean,
     onClick: () -> Unit,
 ) {
     val context = LocalContext.current
     Chip(
-        icon = if (task.isCollapsed)
+        icon = if (collapsed)
             R.drawable.ic_keyboard_arrow_down_black_24dp
         else
             R.drawable.ic_keyboard_arrow_up_black_24dp,
         name = if (compact)
-            NumberFormat.getInstance().format(task.children)
+            NumberFormat.getInstance().format(children)
         else
-            context.resources.getQuantityString(R.plurals.subtask_count, task.children, task.children),
+            remember(children) {
+                context.resources.getQuantityString(R.plurals.subtask_count, children, children)
+            },
         theme = 0,
         showText = true,
         showIcon = true,

app/src/main/java/org/tasks/compose/edit/SubtaskRow.kt

@@ -210,7 +210,8 @@ fun ExistingSubtaskRow(
         )
         if (task.hasChildren()) {
             SubtaskChip(
-                task = task,
+                collapsed = task.isCollapsed,
+                children = task.children,
                 compact = true,
                 onClick = onToggleSubtaskClick,
             )

app/src/main/java/org/tasks/tasklist/TaskViewHolder.kt

@@ -226,24 +226,26 @@ class TaskViewHolder internal constructor(
                 ) {
                     chipProvider.Chips(
                         filter = filter,
-                        isSubtask = indent > 0,
-                        task = task,
+                        id = task.id,
+                        children = task.children,
+                        collapsed = task.isCollapsed,
+                        isHidden = task.isHidden,
+                        sortGroup = task.sortGroup,
+                        startDate = task.startDate,
+                        place = task.location?.place,
+                        list = task.caldav,
+                        tagsString = task.tagsString,
+                        isSubtask = task.hasParent(),
+                        isGoogleTask = task.isGoogleTask,
                         sortByStartDate = sortByStartDate,
-                        onClick = this::onChipClick
+                        toggleSubtasks = { task: Long, collapsed: Boolean -> callback.toggleSubtasks(task, collapsed) },
+                        onClick = { it: Filter -> callback.onClick(it) },
                     )
                 }
             }
         }
     }
 
-    private fun onChipClick(tag: Any) {
-        if (tag is Filter) {
-            callback.onClick(tag)
-        } else if (tag is TaskContainer) {
-            callback.toggleSubtasks(tag, !tag.isCollapsed)
-        }
-    }
-
     private fun onCompleteBoxClick() {
         val newState = completeBox.isChecked
         if (newState != task.isCompleted) {
@@ -263,7 +265,7 @@ class TaskViewHolder internal constructor(
         fun onLinkClicked(vh: TaskViewHolder, url: String): Boolean
         fun onClick(taskViewHolder: TaskViewHolder)
         fun onClick(filter: Filter)
-        fun toggleSubtasks(task: TaskContainer, collapsed: Boolean)
+        fun toggleSubtasks(task: Long, collapsed: Boolean)
         fun onLongPress(taskViewHolder: TaskViewHolder): Boolean
         fun onChangeDueDate(task: TaskContainer)
     }

app/src/main/java/org/tasks/ui/ChipProvider.kt

@@ -2,6 +2,9 @@ package org.tasks.ui
 
 import android.app.Activity
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
 import com.todoroo.andlib.utility.DateUtilities
 import com.todoroo.astrid.api.CaldavFilter
 import com.todoroo.astrid.api.Filter
@@ -9,19 +12,18 @@ import com.todoroo.astrid.api.GtasksFilter
 import com.todoroo.astrid.api.TagFilter
 import com.todoroo.astrid.data.Task
 import org.tasks.R
-import org.tasks.Strings.isNullOrEmpty
 import org.tasks.billing.Inventory
 import org.tasks.compose.Chip
 import org.tasks.compose.FilterChip
 import org.tasks.compose.SubtaskChip
-import org.tasks.data.TaskContainer
+import org.tasks.data.Place
 import org.tasks.date.DateTimeUtils.toDateTime
 import org.tasks.filters.PlaceFilter
 import org.tasks.preferences.Preferences
 import org.tasks.themes.ColorProvider
 import org.tasks.time.DateTimeUtils.startOfDay
 import java.time.format.FormatStyle
-import java.util.*
+import java.util.Locale
 import javax.inject.Inject
 
 class ChipProvider @Inject constructor(
@@ -42,67 +44,95 @@ class ChipProvider @Inject constructor(
     }
 
     @Composable
-    private fun StartDateChip(task: TaskContainer, compact: Boolean, timeOnly: Boolean) {
-        val text = if (timeOnly
-            && task.sortGroup?.startOfDay() == task.startDate.startOfDay()
-            && preferences.showGroupHeaders()
-        ) {
-            task.startDate
-                .takeIf { Task.hasDueTime(it) }
-                ?.let { DateUtilities.getTimeString(activity, it.toDateTime()) }
-                ?: return
-        } else {
-            DateUtilities.getRelativeDateTime(
-                activity,
-                task.startDate,
-                locale,
-                if (compact) FormatStyle.SHORT else FormatStyle.MEDIUM,
-                false,
-                false
+    private fun StartDateChip(
+        sortGroup: Long?,
+        startDate: Long,
+        compact: Boolean,
+        timeOnly: Boolean
+    ) {
+        val text by remember(sortGroup, startDate, timeOnly, compact) {
+            derivedStateOf {
+                if (
+                    timeOnly &&
+                    sortGroup?.startOfDay() == startDate.startOfDay() &&
+                    preferences.showGroupHeaders()
+                ) {
+                    startDate
+                        .takeIf { Task.hasDueTime(it) }
+                        ?.let { DateUtilities.getTimeString(activity, it.toDateTime()) }
+                } else {
+                    DateUtilities.getRelativeDateTime(
+                        activity,
+                        startDate,
+                        locale,
+                        if (compact) FormatStyle.SHORT else FormatStyle.MEDIUM,
+                        false,
+                        false
+                    )
+                }
+            }
+        }
+        if (text != null) {
+            Chip(
+                R.drawable.ic_pending_actions_24px,
+                text,
+                0,
+                showText = true,
+                showIcon = true,
+                onClick = {},
+                colorProvider = this::getColor,
             )
         }
-        Chip(
-            R.drawable.ic_pending_actions_24px,
-            text,
-            0,
-            showText = true,
-            showIcon = true,
-            onClick = {},
-            colorProvider = this::getColor,
-        )
     }
 
     @Composable
     fun Chips(
         filter: Filter?,
-        isSubtask: Boolean,
-        task: TaskContainer,
+        id: Long,
+        children: Int,
+        collapsed: Boolean,
+        isHidden: Boolean,
+        sortGroup: Long?,
+        startDate: Long,
+        place: Place?,
+        tagsString: String?,
         sortByStartDate: Boolean,
-        onClick: (Any) -> Unit,
+        list: String?,
+        isSubtask: Boolean,
+        isGoogleTask: Boolean,
+        toggleSubtasks: (Long, Boolean) -> Unit,
+        onClick: (Filter) -> Unit,
     ) {
-        if (task.hasChildren() && preferences.showSubtaskChip) {
-            SubtaskChip(task, !showText, onClick = { onClick(task) })
+        if (children > 0 && remember { preferences.showSubtaskChip }) {
+            SubtaskChip(
+                collapsed = collapsed,
+                children = children,
+                compact = !showText,
+                onClick = { toggleSubtasks(id, !collapsed) }
+            )
         }
-        if (task.isHidden && preferences.showStartDateChip) {
-            StartDateChip(task, !showText, sortByStartDate)
+        if (isHidden && remember { preferences.showStartDateChip }) {
+            StartDateChip(sortGroup, startDate, !showText, sortByStartDate)
         }
-        if (task.hasLocation() && filter !is PlaceFilter && preferences.showPlaceChip) {
-            val location = task.getLocation()
-            if (location != null) {
-                FilterChip(
-                    filter = PlaceFilter(location.place),
-                    defaultIcon = R.drawable.ic_outline_place_24px,
-                    onClick = onClick,
-                    showText = showText,
-                    showIcon = showIcon,
-                    colorProvider = this::getColor,
-                )
-            }
+        if (place != null && filter !is PlaceFilter && remember { preferences.showPlaceChip }) {
+            FilterChip(
+                filter = PlaceFilter(place),
+                defaultIcon = R.drawable.ic_outline_place_24px,
+                onClick = onClick,
+                showText = showText,
+                showIcon = showIcon,
+                colorProvider = this::getColor,
+            )
         }
+
         if (!isSubtask && preferences.showListChip && filter !is CaldavFilter) {
-            lists.getCaldavList(task.caldav)?.let { list ->
+            remember(list, isGoogleTask) {
+                lists
+                    .getCaldavList(list)
+                    ?.let { if (isGoogleTask) GtasksFilter(it) else CaldavFilter(it) }
+            }?.let {
                 FilterChip(
-                    filter = if (task.isGoogleTask) GtasksFilter(list) else CaldavFilter(list),
+                    filter = it,
                     defaultIcon = R.drawable.ic_list_24px,
                     onClick = onClick,
                     showText = showText,
@@ -111,14 +141,15 @@ class ChipProvider @Inject constructor(
                 )
             }
         }
-        val tagString = task.tagsString
-        if (!isNullOrEmpty(tagString) && preferences.showTagChip) {
-            val tags = tagString.split(",").toHashSet()
-            if (filter is TagFilter) {
-                tags.remove(filter.uuid)
+        if (!tagsString.isNullOrBlank() && remember { preferences.showTagChip }) {
+            remember(tagsString, filter) {
+                val tags = tagsString.split(",").toHashSet()
+                if (filter is TagFilter) {
+                    tags.remove(filter.uuid)
+                }
+                tags.mapNotNull(lists::getTag)
+                    .sortedBy(TagFilter::listingTitle)
             }
-            tags.mapNotNull(lists::getTag)
-                .sortedBy(TagFilter::listingTitle)
                 .forEach {
                     FilterChip(
                         filter = it,