Refactor: extract static values to Constants class, split packages

Change-Id: I5d9f07b6e0d82b40d9c1fa216b233af881ff11ab
diff --git a/apps/simplefabric/app/src/main/java/org/onosproject/simplefabric/cli/SimpleFabricCommandCompleter.java b/apps/simplefabric/app/src/main/java/org/onosproject/simplefabric/cli/SimpleFabricCommandCompleter.java
new file mode 100644
index 0000000..d216bac
--- /dev/null
+++ b/apps/simplefabric/app/src/main/java/org/onosproject/simplefabric/cli/SimpleFabricCommandCompleter.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.simplefabric.cli;
+
+import com.google.common.collect.Lists;
+import org.apache.karaf.shell.console.completer.ArgumentCompleter;
+import org.onosproject.cli.AbstractChoicesCompleter;
+
+import java.util.List;
+import java.util.Arrays;
+import java.util.Collections;
+
+/**
+ * SimpleFabric command completer.
+ */
+public class SimpleFabricCommandCompleter extends AbstractChoicesCompleter {
+
+    private static final List<String> COMMAND_LIST =
+        Arrays.asList("show", "intents", "reactive-intents", "refresh", "flush");
+
+    @Override
+    public List<String> choices() {
+        ArgumentCompleter.ArgumentList argumentList = getArgumentList();
+        if (argumentList == null) {
+            return Collections.emptyList();
+        }
+        List<String> argList = Lists.newArrayList(argumentList.getArguments());
+        String argOne = null;
+        if (argList.size() > 1) {
+            argOne = argList.get(1);
+        }
+        if (COMMAND_LIST.contains(argOne)) {
+            return Collections.emptyList();
+        } else {
+            return COMMAND_LIST;
+        }
+    }
+}
+