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refactor: unread count from RecyclerView scroll listener

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This commit is contained in:
andrekir 2024-06-16 08:26:07 -03:00
parent e5396524fb
commit 0774124603
1 changed files with 25 additions and 13 deletions
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38
app/src/main/java/com/geeksville/mesh/ui/MessagesFragment.kt
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@ -101,19 +101,32 @@ class MessagesFragment : Fragment(), Logging {
fun scrollToFirstUnreadMessage() {
val position = messages.indexOfFirst { !it.read }
if (position > 0) {
if (position >= 0) {
val rect = Rect()
binding.toolbar.getGlobalVisibleRect(rect)
val toolbarOffset = rect.bottom
val offset = binding.messageListView.height - toolbarOffset
layoutManager.scrollToPositionWithOffset(position, offset)
messages[position].apply { model.clearUnreadCount(contact_key, received_time) }
} else {
scrollToBottom()
}
}
fun clearUnreadCount() {
val firstUnreadItem = messages.firstOrNull { !it.read } ?: return
val lastVisibleItemPosition = layoutManager.findLastVisibleItemPosition()
if (lastVisibleItemPosition != RecyclerView.NO_POSITION) {
val lastVisibleItem = messages[lastVisibleItemPosition]
val contactKey = lastVisibleItem.contact_key
val timestamp = lastVisibleItem.received_time
if (timestamp >= firstUnreadItem.received_time) {
model.clearUnreadCount(contactKey, timestamp)
}
}
}
override fun getItemCount(): Int = messages.size
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
@ -301,20 +314,19 @@ class MessagesFragment : Fragment(), Logging {
binding.messageListView.layoutManager = layoutManager
binding.messageListView.addOnScrollListener(object : RecyclerView.OnScrollListener() {
override fun onScrollStateChanged(recyclerView: RecyclerView, newState: Int) {
super.onScrollStateChanged(recyclerView, newState)
if (newState == RecyclerView.SCROLL_STATE_IDLE) {
messagesAdapter.clearUnreadCount()
}
}
override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
super.onScrolled(recyclerView, dx, dy)
val firstUnreadItem = messagesAdapter.messages.firstOrNull { !it.read }
if (firstUnreadItem != null && dy > 0) {
val lastVisibleItemPosition = layoutManager.findLastVisibleItemPosition()
if (lastVisibleItemPosition != RecyclerView.NO_POSITION) {
val lastVisibleItem = messagesAdapter.messages[lastVisibleItemPosition]
val timestamp = lastVisibleItem.received_time
if (timestamp > firstUnreadItem.received_time) {
model.clearUnreadCount(contactKey, timestamp)
}
}
if (dy == 0) {
messagesAdapter.clearUnreadCount()
}
}
})