1 files changed, 72 insertions, 0 deletions
diff --git a/WordPress/src/main/java/org/wordpress/android/ui/prefs/EmptyViewRecyclerView.java b/WordPress/src/main/java/org/wordpress/android/ui/prefs/EmptyViewRecyclerView.java
new file mode 100644
index 000000000..f48affb53
--- /dev/null
+++ b/WordPress/src/main/java/org/wordpress/android/ui/prefs/EmptyViewRecyclerView.java
@@ -0,0 +1,72 @@
+package org.wordpress.android.ui.prefs;
+
+import android.content.Context;
+import android.support.v7.widget.RecyclerView;
+import android.util.AttributeSet;
+import android.view.View;
+
+/**
+ * RecyclerView with setEmptyView method which displays a view when RecyclerView adapter is empty.
+ */
+public class EmptyViewRecyclerView extends RecyclerView {
+    private View mEmptyView;
+
+    final private AdapterDataObserver observer = new AdapterDataObserver() {
+        @Override
+        public void onChanged() {
+            toggleEmptyView();
+        }
+
+        @Override
+        public void onItemRangeInserted(int positionStart, int itemCount) {
+            toggleEmptyView();
+        }
+
+        @Override
+        public void onItemRangeRemoved(int positionStart, int itemCount) {
+            toggleEmptyView();
+        }
+    };
+
+    public EmptyViewRecyclerView(Context context) {
+        super(context);
+    }
+
+    public EmptyViewRecyclerView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public EmptyViewRecyclerView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    @Override
+    public void setAdapter(Adapter adapterNew) {
+        final RecyclerView.Adapter adapterOld = getAdapter();
+
+        if (adapterOld != null) {
+            adapterOld.unregisterAdapterDataObserver(observer);
+        }
+
+        super.setAdapter(adapterNew);
+
+        if (adapterNew != null) {
+            adapterNew.registerAdapterDataObserver(observer);
+        }
+
+        toggleEmptyView();
+    }
+
+    public void setEmptyView(View emptyView) {
+        mEmptyView = emptyView;
+        toggleEmptyView();
+    }
+
+    private void toggleEmptyView() {
+        if (mEmptyView != null && getAdapter() != null) {
+            final boolean empty = getAdapter().getItemCount() == 0;
+            mEmptyView.setVisibility(empty ? VISIBLE : GONE);
+            this.setVisibility(empty ? GONE : VISIBLE);
+        }
+    }
+}