Implement subscribe action snackbar

wordpress-mobile · May 10, 2024 · 5b45a34 · 5b45a34
1 parent 7fdb8b3
commit 5b45a34
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diff --git a/WordPress/src/main/java/org/wordpress/android/ui/reader/ReaderTagsFeedFragment.kt b/WordPress/src/main/java/org/wordpress/android/ui/reader/ReaderTagsFeedFragment.kt
@@ -277,6 +277,26 @@ class ReaderTagsFeedFragment : ViewPagerFragment(R.layout.reader_tag_feed_fragme
         }
     }
 
+    private fun observeSnackbarEvents() {
+        viewModel.snackbarEvents.observeEvent(viewLifecycleOwner) { snackbarMessageHolder ->
+            activity?.findViewById<View>(R.id.coordinator)?.let { coordinator ->
+                with(snackbarMessageHolder) {
+                    val snackbar = WPSnackbar.make(
+                        coordinator,
+                        uiHelpers.getTextOfUiString(requireContext(), message),
+                        Snackbar.LENGTH_LONG
+                    )
+                    if (buttonTitle != null) {
+                        snackbar.setAction(uiHelpers.getTextOfUiString(requireContext(), buttonTitle)) {
+                            buttonAction.invoke()
+                        }
+                    }
+                    snackbar.show()
+                }
+            }
+        }
+    }
+
     private fun observeOpenMoreMenuEvents() {
         viewModel.openMoreMenuEvents.observe(viewLifecycleOwner) {
             val readerCardUiState = it.readerCardUiState

diff --git a/.../main/java/org/wordpress/android/ui/reader/viewmodels/tagsfeed/ReaderTagsFeedViewModel.kt b/.../main/java/org/wordpress/android/ui/reader/viewmodels/tagsfeed/ReaderTagsFeedViewModel.kt
@@ -3,6 +3,7 @@ package org.wordpress.android.ui.reader.viewmodels.tagsfeed
 import androidx.annotation.VisibleForTesting
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MediatorLiveData
+import androidx.lifecycle.viewModelScope
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -13,6 +14,7 @@ import org.wordpress.android.datasets.wrappers.ReaderPostTableWrapper
 import org.wordpress.android.models.ReaderPost
 import org.wordpress.android.models.ReaderTag
 import org.wordpress.android.modules.BG_THREAD
+import org.wordpress.android.ui.pages.SnackbarMessageHolder
 import org.wordpress.android.ui.reader.ReaderTypes
 import org.wordpress.android.ui.reader.discover.FEATURED_IMAGE_HEIGHT_WIDTH_RATION
 import org.wordpress.android.ui.reader.discover.PHOTON_WIDTH_QUALITY_RATION
@@ -56,9 +58,16 @@ class ReaderTagsFeedViewModel @Inject constructor(
     private val _navigationEvents = MediatorLiveData<Event<ReaderNavigationEvents>>()
     val navigationEvents: LiveData<Event<ReaderNavigationEvents>> = _navigationEvents
 
+    // Unlike the snackbarEvents observable which only expects messages from ReaderPostCardActionsHandler,
+    // this observable is controlled by this ViewModel.
     private val _errorMessageEvents = MediatorLiveData<Event<Int>>()
     val errorMessageEvents: LiveData<Event<Int>> = _errorMessageEvents
 
+    // This observable just expects messages from ReaderPostCardActionsHandler. Nothing is directly triggered
+    // from this ViewModel.
+    private val _snackbarEvents = MediatorLiveData<Event<SnackbarMessageHolder>>()
+    val snackbarEvents: LiveData<Event<SnackbarMessageHolder>> = _snackbarEvents
+
     private val _openMoreMenuEvents = SingleLiveEvent<MoreMenuUiState>()
     val openMoreMenuEvents: LiveData<MoreMenuUiState> = _openMoreMenuEvents
 
@@ -84,7 +93,9 @@ class ReaderTagsFeedViewModel @Inject constructor(
 
         if (!hasInitialized) {
             hasInitialized = true
+            readerPostCardActionsHandler.initScope(viewModelScope)
             initNavigationEvents()
+            initSnackbarEvents()
         }
 
         // Initially add all tags to the list with the posts loading UI
@@ -110,6 +121,12 @@ class ReaderTagsFeedViewModel @Inject constructor(
         }
     }
 
+    private fun initSnackbarEvents() {
+        _snackbarEvents.addSource(readerPostCardActionsHandler.snackbarEvents) { event ->
+            _snackbarEvents.value = event
+        }
+    }
+
     /**
      * Fetch posts for a single tag. This method will emit a new state to [uiStateFlow] for different [UiState]s:
      * [UiState.Initial], [UiState.Loaded], [UiState.Loading], [UiState.Empty], but only for the tag being fetched.