Labs: setting to clear highlighted message on scroll

Change-Id: If07012f29159bb10cbd90f410955b49684891945

library/ui-strings/src/main/res/values/strings_sc.xml

@@ -229,6 +229,9 @@
 
     <string name="action_send_as_sticker">Send as sticker</string>
 
+    <string name="settings_clear_highlight_on_scroll">Clear highlight on scroll</string>
+    <string name="settings_clear_highlight_on_scroll_summary">Remove highlight from messages when you scroll</string>
+
     <!-- SC-TMP, until merged upstream: https://github.com/vector-im/element-android/pull/5781 -->
     <string name="settings_call_ringtone_use_default_stun_title">Allow fallback call assist server</string>
     <string name="settings_call_ringtone_use_default_stun_summary">Will use %s as assist when your homeserver does not offer one (your IP address will be seen by the stun server during a call

vector/src/main/java/im/vector/app/features/home/room/detail/TimelineFragment.kt

@@ -323,6 +323,8 @@ class TimelineFragment :
 
     private val lazyLoadedViews = RoomDetailLazyLoadedViews()
 
+    private val clearHighlightOnScroll by lazy { vectorPreferences.clearHighlightOnScroll() }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         analyticsScreenName = MobileScreen.ScreenName.Room
@@ -1335,6 +1337,9 @@ class TimelineFragment :
                     // If we do not clear the focus manually, it will keep it forever?
                     // We want to listen to new focus events to re-enable the stickToBottom though.
                     messageComposerViewModel.handle(MessageComposerAction.ClearFocus)
+                    if (clearHighlightOnScroll) {
+                        timelineViewModel.clearHighlight()
+                    }
                 }
                 super.onScrolled(recyclerView, dx, dy)
             }

vector/src/main/java/im/vector/app/features/home/room/detail/TimelineViewModel.kt

@@ -1153,6 +1153,12 @@ class TimelineViewModel @AssistedInject constructor(
         _viewEvents.post(RoomDetailViewEvents.NavigateToEvent(targetEventId, action.isFirstUnreadEvent))
     }
 
+    fun clearHighlight() = withState { state ->
+        if (state.highlightedEventId != null) {
+            setState { copy(highlightedEventId = null) }
+        }
+    }
+
     private fun handleResendEvent(action: RoomDetailAction.ResendMessage) {
         if (room == null) return
         val targetEventId = action.eventId

vector/src/main/java/im/vector/app/features/settings/VectorPreferences.kt

@@ -263,6 +263,7 @@ class VectorPreferences @Inject constructor(
         const val SETTINGS_ROOM_SORT_ORDER_NULL = "SETTINGS_ROOM_SORT_ORDER_NULL"
         const val SETTINGS_ROOM_SORT_ORDER_NON_NULL = "SETTINGS_ROOM_SORT_ORDER_NON_NULL"
         private const val SETTINGS_ENABLE_MEMBER_NAME_CLICK = "SETTINGS_ENABLE_MEMBER_NAME_CLICK"
+        private const val SETTINGS_CLEAR_HIGHLIGHT_ON_SCROLL = "SETTINGS_CLEAR_HIGHLIGHT_ON_SCROLL"
 
         private const val DID_ASK_TO_ENABLE_SESSION_PUSH = "DID_ASK_TO_ENABLE_SESSION_PUSH"
 
@@ -1258,6 +1259,11 @@ class VectorPreferences @Inject constructor(
         return defaultPrefs.getBoolean(SETTINGS_ENABLE_MEMBER_NAME_CLICK, true)
     }
 
+    // SC addition
+    fun clearHighlightOnScroll(): Boolean {
+        return defaultPrefs.getBoolean(SETTINGS_CLEAR_HIGHLIGHT_ON_SCROLL, false)
+    }
+
 
     /**
      * I likely do more fresh installs of the app than anyone else, so a shortcut to change some of the default settings to
@@ -1286,6 +1292,7 @@ class VectorPreferences @Inject constructor(
                 .putBoolean(SETTINGS_FLOATING_DATE, true)
                 .putBoolean(SETTINGS_FOLLOW_SYSTEM_LOCALE, true)
                 .putBoolean(SETTINGS_ENABLE_MEMBER_NAME_CLICK, false)
+                .putBoolean(SETTINGS_CLEAR_HIGHLIGHT_ON_SCROLL, true)
                 .apply()
     }
 

vector/src/main/res/xml/vector_settings_labs.xml

@@ -37,6 +37,12 @@
             android:title="@string/settings_read_receipt_follows_read_marker"
             android:summary="@string/settings_read_receipt_follows_read_marker_summary" />
 
+        <im.vector.app.core.preference.VectorSwitchPreference
+            android:defaultValue="false"
+            android:key="SETTINGS_CLEAR_HIGHLIGHT_ON_SCROLL"
+            android:title="@string/settings_clear_highlight_on_scroll"
+            android:summary="@string/settings_clear_highlight_on_scroll_summary" />
+
         <im.vector.app.core.preference.VectorSwitchPreference
             android:defaultValue="false"
             android:key="SETTINGS_ALLOW_URL_PREVIEW_IN_ENCRYPTED_ROOM_KEY"