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Leanback: only update rows if necessary

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This commit is contained in:
Felix 2018-12-23 18:47:30 +01:00
parent 3aba5af840
commit 7fcd6630ef
2 changed files with 27 additions and 27 deletions
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2
leanback/src/main/java/de/nicidienase/chaosflix/leanback/DiffCallbacks.kt
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@ -17,7 +17,7 @@ object DiffCallbacks {
val conferenceDiffCallback = object: DiffCallback<Conference>() {
override fun areItemsTheSame(oldItem: Conference, newItem: Conference): Boolean {
return oldItem.url == newItem.url
return oldItem.id == newItem.id
}
override fun areContentsTheSame(oldItem: Conference, newItem: Conference): Boolean {

52
leanback/src/main/java/de/nicidienase/chaosflix/leanback/conferences/ConferencesBrowseFragment.kt
View file

@ -88,10 +88,24 @@ class ConferencesBrowseFragment : BrowseSupportFragment() {
onItemViewClickedListener = ItemViewClickedListener(this)
adapter = rowsAdapter
}
override fun onStart() {
super.onStart()
viewModel.getConferenceGroups().observe(this, Observer { conferenceGroups ->
if (conferenceGroups != null && conferenceGroups.isNotEmpty()) {
val conferenceRows = ArrayList<Row>()
errorFragment?.dismiss(fragmentManager)
for (group in conferenceGroups.sorted()) {
var row = conferencesGroupRows.get(group.name)
if (row == null) {
row = buildRow(ArrayList(), conferencePresenter, ConferenceUtil.getStringForTag(group.name))
conferencesGroupRows[group.name] = row
bindConferencesToRow(group, row)
}
conferenceRows.add(row)
}
Log.i(TAG, "got ${conferenceGroups.size} conference-groups, loading ${conferenceRows.size} rows")
updateConferencesSection(conferenceRows)
}
})
viewModel.getUpdateState().observe(this, Observer { downloaderEvent ->
when (downloaderEvent?.state) {
@ -106,34 +120,12 @@ class ConferencesBrowseFragment : BrowseSupportFragment() {
val errorMessage = downloaderEvent.error ?: "Error refreshing events"
errorFragment?.setErrorContent(errorMessage, fragmentManager)
} else {
if (downloaderEvent.data?.isEmpty() ?: false) {
errorFragment?.setErrorContent("No Events found for this conference", fragmentManager)
} else {
errorFragment?.dismiss(fragmentManager)
}
errorFragment?.dismiss(fragmentManager)
}
}
}
})
viewModel.getConferenceGroups().observe(this, Observer { conferenceGroups ->
if (conferenceGroups != null && conferenceGroups.isNotEmpty()) {
val conferenceRows = ArrayList<Row>()
errorFragment?.dismiss(fragmentManager)
for (group in conferenceGroups.sorted()) {
var row = conferencesGroupRows.get(group.name)
if (row == null) {
row = buildRow(ArrayList(), conferencePresenter, ConferenceUtil.getStringForTag(group.name))
conferencesGroupRows[group.name] = row
}
conferenceRows.add(row)
bindConferencesToRow(group, row)
}
Log.i(TAG, "got ${conferenceGroups?.size} conference-groups, loading ${conferenceRows.size} rows")
updateConferencesSection(conferenceRows)
}
})
viewModel.getBookmarkedEvents().observe(this, Observer { bookmarks ->
if (bookmarks != null) {
watchListAdapter.setItems(bookmarks, DiffCallbacks.eventDiffCallback)
@ -183,6 +175,10 @@ class ConferencesBrowseFragment : BrowseSupportFragment() {
streamsDivider)
private fun updateConferencesSection(rows: List<Row>) {
if (! rows.map { rowsAdapter.indexOf(it) }.contains(-1)){
Log.i(TAG, "skipping conf-section update, all rows allready contained")
return
}
clearSection(Section.Conferences)
val i = rowsAdapter.indexOf(conferencesSection)
rowsAdapter.addAll(i + 1, rows)
@ -191,6 +187,10 @@ class ConferencesBrowseFragment : BrowseSupportFragment() {
private fun updateSection(section: Section, rowProvider: () -> List<Row>, before: Row) {
val rows = rowProvider.invoke()
if(!rows.map { rowsAdapter.indexOf(it) }.contains(-1)){
Log.i(TAG, "skipping adding section, all rows allready contained")
return
}
if (rows.isNotEmpty()) {
if (sectionVisible(section)) {
clearSection(section)