Adds saving media to drafts.

app/src/main/java/com/keylesspalace/tusky/util/ListUtils.java

@@ -0,0 +1,36 @@
+/* Copyright 2017 Andrew Dawson
+ *
+ * This file is a part of Tusky.
+ *
+ * This program is free software; you can redistribute it and/or modify it under the terms of the
+ * GNU General Public License as published by the Free Software Foundation; either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
+ * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+ * Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with Tusky; if not,
+ * see <http://www.gnu.org/licenses>. */
+
+package com.keylesspalace.tusky.util;
+
+import android.support.annotation.Nullable;
+
+import java.util.List;
+
+public class ListUtils {
+    /** @return true if list is null or else return list.isEmpty() */
+    public static boolean isEmpty(@Nullable List list) {
+        return list == null || list.isEmpty();
+    }
+
+    /** @return 0 if list is null, or else return list.size() */
+    public static int getSize(@Nullable List list) {
+        if (list == null) {
+            return 0;
+        } else {
+            return list.size();
+        }
+    }
+}