Solves #4: Display is not refreshed as the data change

app/src/main/java/fr/chenry/android/freshrss/components/subscriptions/AllSubscriptionsFragment.kt

 package fr.chenry.android.freshrss.components.subscriptions
 
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
 import fr.chenry.android.freshrss.store.*
 import fr.chenry.android.freshrss.store.dao.common.Subscription
 import fr.chenry.android.freshrss.store.dao.common.Subscriptions
 
 class AllSubscriptionsFragment: SubscriptionsFragment() {
-    override val subscriptions: Subscriptions get() = Store.subscriptions.values
+    override val liveData: LiveData<Subscriptions> = MutableLiveData<Subscriptions>().apply {
+        this.value = Store.subscriptions.values
+        Store.subscriptions.observeForever {this.value = Store.subscriptions.values}
+    }
 
     override fun onClick(subscription: Subscription) {
         Router.navigate(RouteName.SUBSCRIPTION_ARTICLES_ALL, mapOf("id" to subscription.id))

app/src/main/java/fr/chenry/android/freshrss/components/subscriptions/FavoritesSubscriptionsFragment.kt

+package fr.chenry.android.freshrss.components.subscriptions
+
+import android.os.Bundle
+import androidx.lifecycle.*
+import fr.chenry.android.freshrss.store.RouteName
+import fr.chenry.android.freshrss.store.Router
+import fr.chenry.android.freshrss.store.dao.common.Subscription
+import fr.chenry.android.freshrss.store.dao.common.Subscriptions
+import fr.chenry.android.freshrss.store.databindingsupport.viewmodels.UnreadSubscriptionsViewModel
+
+class FavoritesSubscriptionsFragment: SubscriptionsFragment() {
+    override val liveData = MutableLiveData<Subscriptions>().apply {this.value = listOf()}
+
+    override fun onClick(subscription: Subscription) {
+        Router.navigate(RouteName.SUBSCRIPTION_ARTICLES_UNREAD, mapOf("id" to subscription.id))
+    }
+}

app/src/main/java/fr/chenry/android/freshrss/components/subscriptions/MainSubscriptionFragment.kt

@@ -3,12 +3,14 @@ package fr.chenry.android.freshrss.components.subscriptions
 import android.os.Bundle
 import android.view.*
 import androidx.fragment.app.Fragment
+import androidx.lifecycle.LiveData
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import fr.chenry.android.freshrss.R
 import fr.chenry.android.freshrss.store.Store
 import fr.chenry.android.freshrss.store.dao.common.Subscription
 import fr.chenry.android.freshrss.store.dao.common.Subscriptions
+import fr.chenry.android.freshrss.utils.e
 import fr.chenry.android.freshrss.utils.getOrDefault
 import kotlinx.android.synthetic.main.fragment_main_subscription.*
 import kotlin.reflect.KClass
@@ -17,7 +19,7 @@ class MainSubscriptionFragment: Fragment() {
     private val fragment: KClass<out SubscriptionsFragment>
         get() = when(Store.subscriptionsSection.value) {
             SubscriptionSection.ALL -> AllSubscriptionsFragment::class
-            SubscriptionSection.FAVORITES -> AllSubscriptionsFragment::class
+            SubscriptionSection.FAVORITES -> FavoritesSubscriptionsFragment::class
             SubscriptionSection.UNREAD -> UnreadSubscriptionsFragment::class
             else -> TODO("Handle bad section")
         }
@@ -73,14 +75,18 @@ class MainSubscriptionFragment: Fragment() {
 }
 
 abstract class SubscriptionsFragment: Fragment() {
-    abstract val subscriptions: Subscriptions
+    abstract val liveData: LiveData<Subscriptions>
+    val subscriptions: Subscriptions get() =  liveData.value ?: listOf()
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         val view = inflater.inflate(R.layout.fragment_subscriptions, container, false)
 
         view.findViewById<RecyclerView>(R.id.subscriptions_list).let {
             it.layoutManager = LinearLayoutManager(context, RecyclerView.VERTICAL, false)
-            it.adapter = RecyclerViewAdapter(this)
+            it.adapter = RecyclerViewAdapter(this).apply {
+                liveData.observeForever {this.notifyDataSetChanged()}
+            }
+
         }
 
         return view

app/src/main/java/fr/chenry/android/freshrss/components/subscriptions/UnreadSubscriptionsFragment.kt

@@ -9,9 +9,8 @@ import fr.chenry.android.freshrss.store.dao.common.Subscriptions
 import fr.chenry.android.freshrss.store.databindingsupport.viewmodels.UnreadSubscriptionsViewModel
 
 class UnreadSubscriptionsFragment: SubscriptionsFragment() {
-
     private lateinit var model: UnreadSubscriptionsViewModel
-    override val subscriptions: Subscriptions get() = model.subscriptions
+    override val liveData get() = model.subscriptions
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)

app/src/main/java/fr/chenry/android/freshrss/store/dao/common/Subscription.kt

 package fr.chenry.android.freshrss.store.dao.common
 
+import androidx.databinding.BaseObservable
+import androidx.databinding.Bindable
+import fr.chenry.android.freshrss.BR
 import fr.chenry.android.freshrss.store.dao.store.ItemId
 import fr.chenry.android.freshrss.utils.escapeHtml4
 import fr.chenry.android.freshrss.utils.unescapeHtml4
@@ -16,13 +19,18 @@ typealias Subscriptions = List<Subscription>
 @Serializable
 data class Subscription(
     val id: String,
-    @Serializable(with = HtmlEntitiesSerializer::class) val title: String,
+    @Serializable(with = HtmlEntitiesSerializer::class)
+    val title: String,
     val categories: List<SubscriptionCategory>,
     val url: String,
     val htmlUrl: String
-) {
-    @Transient
+): BaseObservable() {
+    @Transient @get:Bindable
     var unreadCount = 0
+        set(value) {
+            field = value
+            notifyPropertyChanged(BR.unreadCount)
+        }
     @Transient
     var unreadList = listOf<ItemId>()
 }

app/src/main/java/fr/chenry/android/freshrss/store/databindingsupport/viewmodels/UnreadSubscriptionsViewModel.kt

@@ -14,7 +14,10 @@ class UnreadSubscriptionsViewModel: ViewModel() {
         }
     }
 
-    val subscriptions: Subscriptions get() = liveData.value?.values ?: listOf()
+    val subscriptions = MutableLiveData<Subscriptions>().apply {
+        this.value = liveData.value?.values ?: listOf()
+        liveData.observeForever {this.value = liveData.value?.values ?: listOf()}
+    }
 
     private fun load(): MapList<String, Subscription> {
         if(Store.subscriptions.isNullOrEmpty()) return MapList()