3430: Make list refresh/retry consistent (#3474)

* 3430: Make list refresh/retry consistent

* 3430: Add swipe-to-refresh and use states in filter lists

app/src/main/java/com/keylesspalace/tusky/ListsActivity.kt

@@ -101,6 +101,9 @@ class ListsActivity : BaseActivity(), Injectable, HasAndroidInjector {
             DividerItemDecoration(this, DividerItemDecoration.VERTICAL)
         )
 
+        binding.swipeRefreshLayout.setOnRefreshListener { viewModel.retryLoading() }
+        binding.swipeRefreshLayout.setColorSchemeResources(R.color.tusky_blue)
+
         lifecycleScope.launch {
             viewModel.state.collect(this@ListsActivity::update)
         }
@@ -166,6 +169,7 @@ class ListsActivity : BaseActivity(), Injectable, HasAndroidInjector {
     private fun update(state: ListsViewModel.State) {
         adapter.submitList(state.lists)
         binding.progressBar.visible(state.loadingState == LOADING)
+        binding.swipeRefreshLayout.isRefreshing = state.loadingState == LOADING
         when (state.loadingState) {
             INITIAL, LOADING -> binding.messageView.hide()
             ERROR_NETWORK -> {

app/src/main/java/com/keylesspalace/tusky/components/accountlist/AccountListFragment.kt

@@ -89,9 +89,11 @@ class AccountListFragment : Fragment(R.layout.fragment_account_list), AccountAct
         val layoutManager = LinearLayoutManager(view.context)
         binding.recyclerView.layoutManager = layoutManager
         (binding.recyclerView.itemAnimator as SimpleItemAnimator).supportsChangeAnimations = false
-
         binding.recyclerView.addItemDecoration(DividerItemDecoration(view.context, DividerItemDecoration.VERTICAL))
 
+        binding.swipeRefreshLayout.setOnRefreshListener { fetchAccounts() }
+        binding.swipeRefreshLayout.setColorSchemeResources(R.color.tusky_blue)
+
         val pm = PreferenceManager.getDefaultSharedPreferences(view.context)
         val animateAvatar = pm.getBoolean(PrefKeys.ANIMATE_GIF_AVATARS, false)
         val animateEmojis = pm.getBoolean(PrefKeys.ANIMATE_CUSTOM_EMOJIS, false)
@@ -287,6 +289,7 @@ class AccountListFragment : Fragment(R.layout.fragment_account_list), AccountAct
             return
         }
         fetching = true
+        binding.swipeRefreshLayout.isRefreshing = true
 
         if (fromId != null) {
             binding.recyclerView.post { adapter.setBottomLoading(true) }
@@ -295,6 +298,7 @@ class AccountListFragment : Fragment(R.layout.fragment_account_list), AccountAct
         viewLifecycleOwner.lifecycleScope.launch {
             try {
                 val response = getFetchCallByListType(fromId)
+
                 if (!response.isSuccessful) {
                     onFetchAccountsFailure(Exception(response.message()))
                     return@launch
@@ -317,6 +321,7 @@ class AccountListFragment : Fragment(R.layout.fragment_account_list), AccountAct
 
     private fun onFetchAccountsSuccess(accounts: List<TimelineAccount>, linkHeader: String?) {
         adapter.setBottomLoading(false)
+        binding.swipeRefreshLayout.isRefreshing = false
 
         val links = HttpHeaderLink.parse(linkHeader)
         val next = HttpHeaderLink.findByRelationType(links, "next")
@@ -366,6 +371,7 @@ class AccountListFragment : Fragment(R.layout.fragment_account_list), AccountAct
 
     private fun onFetchAccountsFailure(throwable: Throwable) {
         fetching = false
+        binding.swipeRefreshLayout.isRefreshing = false
         Log.e(TAG, "Fetch failure", throwable)
 
         if (adapter.itemCount == 0) {

app/src/main/java/com/keylesspalace/tusky/components/conversation/ConversationsFragment.kt

@@ -141,9 +141,13 @@ class ConversationsFragment :
                         binding.statusView.show()
 
                         if ((loadState.refresh as LoadState.Error).error is IOException) {
-                            binding.statusView.setup(R.drawable.elephant_offline, R.string.error_network, null)
+                            binding.statusView.setup(R.drawable.elephant_offline, R.string.error_network) {
+                                refreshContent()
+                            }
                         } else {
-                            binding.statusView.setup(R.drawable.elephant_error, R.string.error_generic, null)
+                            binding.statusView.setup(R.drawable.elephant_error, R.string.error_generic) {
+                                refreshContent()
+                            }
                         }
                     }
                     is LoadState.Loading -> {

app/src/main/java/com/keylesspalace/tusky/components/filters/FiltersActivity.kt

@@ -12,8 +12,8 @@ import com.keylesspalace.tusky.entity.Filter
 import com.keylesspalace.tusky.util.hide
 import com.keylesspalace.tusky.util.show
 import com.keylesspalace.tusky.util.viewBinding
+import com.keylesspalace.tusky.util.visible
 import kotlinx.coroutines.launch
-import java.io.IOException
 import javax.inject.Inject
 
 class FiltersActivity : BaseActivity(), FiltersListener {
@@ -33,10 +33,14 @@ class FiltersActivity : BaseActivity(), FiltersListener {
             setDisplayHomeAsUpEnabled(true)
             setDisplayShowHomeEnabled(true)
         }
+
         binding.addFilterButton.setOnClickListener {
             launchEditFilterActivity()
         }
 
+        binding.swipeRefreshLayout.setOnRefreshListener { loadFilters() }
+        binding.swipeRefreshLayout.setColorSchemeResources(R.color.tusky_blue)
+
         setTitle(R.string.pref_title_timeline_filters)
     }
 
@@ -48,41 +52,46 @@ class FiltersActivity : BaseActivity(), FiltersListener {
 
     private fun observeViewModel() {
         lifecycleScope.launch {
-            viewModel.filters.collect { filters ->
-                binding.filtersView.show()
-                binding.addFilterButton.show()
-                binding.filterProgressBar.hide()
-                refreshFilterDisplay(filters)
-            }
-        }
+            viewModel.state.collect { state ->
+                binding.progressBar.visible(state.loadingState == FiltersViewModel.LoadingState.LOADING)
+                binding.swipeRefreshLayout.isRefreshing = state.loadingState == FiltersViewModel.LoadingState.LOADING
+                binding.addFilterButton.visible(state.loadingState == FiltersViewModel.LoadingState.LOADED)
 
-        lifecycleScope.launch {
-            viewModel.error.collect { error ->
-                if (error is IOException) {
-                    binding.filterMessageView.setup(
-                        R.drawable.elephant_offline,
-                        R.string.error_network
-                    ) { loadFilters() }
+                when (state.loadingState) {
+                    FiltersViewModel.LoadingState.INITIAL, FiltersViewModel.LoadingState.LOADING -> binding.messageView.hide()
+                    FiltersViewModel.LoadingState.ERROR_NETWORK -> {
+                        binding.messageView.setup(R.drawable.elephant_offline, R.string.error_network) {
+                            loadFilters()
+                        }
+                        binding.messageView.show()
+                    }
+                    FiltersViewModel.LoadingState.ERROR_OTHER -> {
+                        binding.messageView.setup(R.drawable.elephant_error, R.string.error_generic) {
+                            loadFilters()
+                        }
+                        binding.messageView.show()
+                    }
+                    FiltersViewModel.LoadingState.LOADED -> {
+                        if (state.filters.isEmpty()) {
+                            binding.messageView.setup(
+                                R.drawable.elephant_friend_empty,
+                                R.string.message_empty,
+                                null
+                            )
+                            binding.messageView.show()
                         } else {
-                    binding.filterMessageView.setup(
-                        R.drawable.elephant_error,
-                        R.string.error_generic
-                    ) { loadFilters() }
+                            binding.messageView.hide()
+                            binding.filtersList.adapter = FiltersAdapter(this@FiltersActivity, state.filters)
+                            binding.filtersList.show()
+                        }
                     }
                 }
             }
         }
-
-    private fun refreshFilterDisplay(filters: List<Filter>) {
-        binding.filtersView.adapter = FiltersAdapter(this, filters)
     }
 
     private fun loadFilters() {
-        binding.filterMessageView.hide()
-        binding.filtersView.hide()
-        binding.addFilterButton.hide()
-        binding.filterProgressBar.show()
-
+        binding.filtersList.hide()
         viewModel.load()
     }
 

app/src/main/java/com/keylesspalace/tusky/components/filters/FiltersViewModel.kt

@@ -9,6 +9,7 @@ import com.keylesspalace.tusky.appstore.EventHub
 import com.keylesspalace.tusky.appstore.PreferenceChangedEvent
 import com.keylesspalace.tusky.entity.Filter
 import com.keylesspalace.tusky.network.MastodonApi
+import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.launch
 import retrofit2.HttpException
@@ -18,27 +19,39 @@ class FiltersViewModel @Inject constructor(
     private val api: MastodonApi,
     private val eventHub: EventHub
 ) : ViewModel() {
-    val filters: MutableStateFlow<List<Filter>> = MutableStateFlow(listOf())
-    val error: MutableStateFlow<Throwable?> = MutableStateFlow(null)
+
+    enum class LoadingState {
+        INITIAL, LOADING, LOADED, ERROR_NETWORK, ERROR_OTHER
+    }
+
+    data class State(val filters: List<Filter>, val loadingState: LoadingState)
+
+    val state: Flow<State> get() = _state
+    private val _state = MutableStateFlow(State(emptyList(), LoadingState.INITIAL))
 
     fun load() {
+        this@FiltersViewModel._state.value = _state.value.copy(loadingState = LoadingState.LOADING)
+
         viewModelScope.launch {
             api.getFilters().fold(
                 { filters ->
-                    this@FiltersViewModel.filters.value = filters
+                    this@FiltersViewModel._state.value = State(filters, LoadingState.LOADED)
                 },
                 { throwable ->
                     if (throwable is HttpException && throwable.code() == 404) {
                         api.getFiltersV1().fold(
                             { filters ->
-                                this@FiltersViewModel.filters.value = filters.map { it.toFilter() }
+                                this@FiltersViewModel._state.value = State(filters.map { it.toFilter() }, LoadingState.LOADED)
                             },
                             { throwable ->
-                                error.value = throwable
+                                // TODO log errors (also below)
+
+                                this@FiltersViewModel._state.value = _state.value.copy(loadingState = LoadingState.ERROR_OTHER)
                             }
                         )
+                        this@FiltersViewModel._state.value = _state.value.copy(loadingState = LoadingState.ERROR_OTHER)
                     } else {
-                        error.value = throwable
+                        this@FiltersViewModel._state.value = _state.value.copy(loadingState = LoadingState.ERROR_NETWORK)
                     }
                 }
             )
@@ -49,7 +62,7 @@ class FiltersViewModel @Inject constructor(
         viewModelScope.launch {
             api.deleteFilter(filter.id).fold(
                 {
-                    filters.value = filters.value.filter { it.id != filter.id }
+                    this@FiltersViewModel._state.value = State(this@FiltersViewModel._state.value.filters.filter { it.id != filter.id }, LoadingState.LOADED)
                     for (context in filter.context) {
                         eventHub.dispatch(PreferenceChangedEvent(context))
                     }
@@ -58,7 +71,7 @@ class FiltersViewModel @Inject constructor(
                     if (throwable is HttpException && throwable.code() == 404) {
                         api.deleteFilterV1(filter.id).fold(
                             {
-                                filters.value = filters.value.filter { it.id != filter.id }
+                                this@FiltersViewModel._state.value = State(this@FiltersViewModel._state.value.filters.filter { it.id != filter.id }, LoadingState.LOADED)
                             },
                             {
                                 Snackbar.make(parent, "Error deleting filter '${filter.title}'", Snackbar.LENGTH_SHORT).show()

app/src/main/java/com/keylesspalace/tusky/components/timeline/TimelineFragment.kt

@@ -245,9 +245,13 @@ class TimelineFragment :
                         binding.statusView.show()
 
                         if ((loadState.refresh as LoadState.Error).error is IOException) {
-                            binding.statusView.setup(R.drawable.elephant_offline, R.string.error_network)
+                            binding.statusView.setup(R.drawable.elephant_offline, R.string.error_network) {
+                                onRefresh()
+                            }
                         } else {
-                            binding.statusView.setup(R.drawable.elephant_error, R.string.error_generic)
+                            binding.statusView.setup(R.drawable.elephant_error, R.string.error_generic) {
+                                onRefresh()
+                            }
                         }
                     }
                     is LoadState.Loading -> {

app/src/main/res/layout/activity_filters.xml

@@ -10,21 +10,27 @@
         android:id="@+id/includedToolbar"
         layout="@layout/toolbar_basic" />
 
+    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+        android:id="@+id/swipeRefreshLayout"
+        android:layout_marginTop="?attr/actionBarSize"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
         <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/filtersView"
+            android:id="@+id/filtersList"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
-        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
-        />
+            app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />
+    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
 
     <com.keylesspalace.tusky.view.BackgroundMessageView
-        android:id="@+id/filterMessageView"
+        android:id="@+id/messageView"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_gravity="center" />
 
     <ProgressBar
-        android:id="@+id/filterProgressBar"
+        android:id="@+id/progressBar"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_gravity="center" />
@@ -36,8 +42,7 @@
         android:layout_margin="16dp"
         android:contentDescription="@string/filter_addition_title"
         android:src="@drawable/ic_plus_24dp"
-        app:layout_anchor="@id/filtersView"
+        app:layout_anchor="@id/filtersList"
         app:layout_anchorGravity="bottom|end" />
 
-
 </androidx.coordinatorlayout.widget.CoordinatorLayout>

app/src/main/res/layout/activity_lists.xml

@@ -13,14 +13,20 @@
             android:id="@+id/includedToolbar"
             layout="@layout/toolbar_basic" />
 
-        <androidx.recyclerview.widget.RecyclerView
-            android:id="@+id/listsRecycler"
+        <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+            android:id="@+id/swipeRefreshLayout"
             android:layout_width="0dp"
             android:layout_height="0dp"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintLeft_toLeftOf="parent"
             app:layout_constraintRight_toRightOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/includedToolbar" />
+            app:layout_constraintTop_toBottomOf="@id/includedToolbar">
+
+            <androidx.recyclerview.widget.RecyclerView
+                android:id="@+id/listsRecycler"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent" />
+        </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
 
         <ProgressBar
             android:id="@+id/progressBar"

app/src/main/res/layout/fragment_account_list.xml

@@ -4,11 +4,18 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
+    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+        android:id="@+id/swipeRefreshLayout"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
         <androidx.recyclerview.widget.RecyclerView
             android:id="@+id/recyclerView"
             android:layout_width="match_parent"
             android:layout_height="match_parent" />
 
+    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
+
     <com.keylesspalace.tusky.view.BackgroundMessageView
         android:id="@+id/messageView"
         android:layout_width="wrap_content"