Show empty catalogue error view with actions

app/src/main/java/eu/kanade/tachiyomi/ui/catalogue/browse/BrowseCatalogueController.kt

@@ -41,8 +41,10 @@ import eu.kanade.tachiyomi.util.view.inflate
 import eu.kanade.tachiyomi.util.view.snack
 import eu.kanade.tachiyomi.util.view.visible
 import eu.kanade.tachiyomi.widget.AutofitRecyclerView
+import eu.kanade.tachiyomi.widget.EmptyView
 import java.util.concurrent.TimeUnit
 import kotlinx.android.synthetic.main.catalogue_controller.catalogue_view
+import kotlinx.android.synthetic.main.catalogue_controller.empty_view
 import kotlinx.android.synthetic.main.catalogue_controller.progress
 import kotlinx.android.synthetic.main.main_activity.drawer
 import rx.Observable
@@ -352,17 +354,33 @@ open class BrowseCatalogueController(bundle: Bundle) :
         snack?.dismiss()
 
         if (catalogue_view != null) {
-            snack = catalogue_view.snack(getErrorMessage(error), Snackbar.LENGTH_INDEFINITE) {
-                setAction(R.string.action_retry) {
+            val message = getErrorMessage(error)
+            val retryAction = View.OnClickListener {
+                empty_view.hide()
+
                 // If not the first page, show bottom progress bar.
-                    if (adapter.mainItemCount > 0) {
-                        val item = progressItem ?: return@setAction
-                        adapter.addScrollableFooterWithDelay(item, 0, true)
+                if (adapter.mainItemCount > 0 && progressItem != null) {
+                    adapter.addScrollableFooterWithDelay(progressItem!!, 0, true)
                 } else {
                     showProgressBar()
                 }
                 presenter.requestNext()
             }
+            val openInWebViewAction = View.OnClickListener {
+                openInWebView()
+            }
+
+            if (adapter.isEmpty) {
+                empty_view.show(message, listOf(
+                    EmptyView.Action(R.string.action_retry, retryAction),
+                    EmptyView.Action(R.string.action_open_in_web_view, openInWebViewAction)
+                ))
+            } else {
+                empty_view.hide()
+
+                snack = catalogue_view.snack(message, Snackbar.LENGTH_INDEFINITE) {
+                    setAction(R.string.action_retry, retryAction)
+                }
             }
         }
     }

app/src/main/java/eu/kanade/tachiyomi/widget/EmptyView.kt

@@ -2,12 +2,16 @@ package eu.kanade.tachiyomi.widget
 
 import android.content.Context
 import android.util.AttributeSet
+import android.view.View
+import android.widget.Button
+import android.widget.LinearLayout
 import android.widget.RelativeLayout
 import androidx.annotation.StringRes
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.util.view.gone
 import eu.kanade.tachiyomi.util.view.visible
 import kotlin.random.Random
+import kotlinx.android.synthetic.main.common_view_empty.view.actions_container
 import kotlinx.android.synthetic.main.common_view_empty.view.text_face
 import kotlinx.android.synthetic.main.common_view_empty.view.text_label
 
@@ -29,9 +33,30 @@ class EmptyView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
      * Show the information view
      * @param textResource text of information view
      */
-    fun show(@StringRes textResource: Int) {
+    fun show(@StringRes textResource: Int, actions: List<Action>? = null) {
+        show(context.getString(textResource), actions)
+    }
+
+    fun show(message: String, actions: List<Action>? = null) {
         text_face.text = getRandomErrorFace()
-        text_label.text = context.getString(textResource)
+        text_label.text = message
+
+        actions_container.removeAllViews()
+        if (!actions.isNullOrEmpty()) {
+            actions.forEach {
+                val button = Button(context).apply {
+                    layoutParams = LinearLayout.LayoutParams(
+                        LinearLayout.LayoutParams.WRAP_CONTENT,
+                        LinearLayout.LayoutParams.WRAP_CONTENT)
+
+                    setText(it.resId)
+                    setOnClickListener(it.listener)
+                }
+
+                actions_container.addView(button)
+            }
+        }
+
         this.visible()
     }
 
@@ -49,4 +74,9 @@ class EmptyView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
             return ERROR_FACES[Random.nextInt(ERROR_FACES.size)]
         }
     }
+
+    data class Action(
+        @StringRes val resId: Int,
+        val listener: View.OnClickListener
+    )
 }

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

@@ -4,11 +4,15 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:fitsSystemWindows="true">
+
         <LinearLayout
             android:id="@+id/catalogue_view"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
-        android:fitsSystemWindows="true"
             android:orientation="vertical"
             tools:context="eu.kanade.tachiyomi.ui.catalogue.browse.BrowseCatalogueController">
 
@@ -17,9 +21,18 @@
                 style="?android:attr/progressBarStyleLarge"
                 android:layout_width="wrap_content"
                 android:layout_height="match_parent"
-            android:layout_gravity="center_vertical|center_horizontal"
+                android:layout_gravity="center"
                 android:visibility="gone" />
 
         </LinearLayout>
 
+        <eu.kanade.tachiyomi.widget.EmptyView
+            android:id="@+id/empty_view"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:gravity="center"
+            android:visibility="gone" />
+
+    </FrameLayout>
+
 </androidx.coordinatorlayout.widget.CoordinatorLayout>

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

@@ -1,17 +1,17 @@
 <?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
-    android:layout_gravity="center">
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:gravity="center"
+    android:orientation="vertical"
+    android:padding="16dp">
 
     <TextView
         android:id="@+id/text_face"
         style="@style/TextAppearance.Medium.Body2.Hint"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_centerHorizontal="true"
-        android:layout_margin="16dp"
         android:gravity="center"
         android:textSize="48sp"
         tools:text="-_-" />
@@ -21,10 +21,15 @@
         style="@style/TextAppearance.Medium.Body2.Hint"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_below="@+id/text_face"
-        android:layout_centerHorizontal="true"
         android:layout_margin="16dp"
         android:gravity="center"
         tools:text="Label" />
 
-</RelativeLayout>
+    <LinearLayout
+        android:id="@+id/actions_container"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:orientation="vertical" />
+
+</LinearLayout>