--- /dev/null
+package com.moiseum.wolnelektury.view.login;
+
+import android.net.Uri;
+import android.support.annotation.StringRes;
+
+/**
+ * Created by Piotr Ostrowski on 12.09.2018.
+ */
+public interface LoginView {
+
+ void setProgressDialogVisibility(boolean visible);
+
+ void showToastMessage(@StringRes int messageResId);
+
+ void showCustomTabsAuthentication(Uri authorizationUrl);
+}