DHCP: Add a superclass for DhcpStateMachine.
This can be used to switch between different DHCP client
implementations. The caller can declare objects of type
BaseDhcpStateMachine, and call its methods, without needing to
care what implementation is in use.
Bug: 19704592
Change-Id: Icefad9b0d0f83b349681388b1fa16b5e2e37c042
diff --git a/core/java/android/net/BaseDhcpStateMachine.java b/core/java/android/net/BaseDhcpStateMachine.java
new file mode 100644
index 0000000..a25847d
--- /dev/null
+++ b/core/java/android/net/BaseDhcpStateMachine.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * 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 android.net;
+
+import com.android.internal.util.StateMachine;
+
+/**
+ * Interface that must be implemented by DHCP state machines.
+ *
+ * This is an abstract class instead of a Java interface so that callers can just declare an object
+ * of this type and be able to call all the methods defined by either StateMachine or this class.
+ *
+ * @hide
+ */
+public abstract class BaseDhcpStateMachine extends StateMachine {
+ protected BaseDhcpStateMachine(String tag) {
+ super(tag);
+ }
+ public abstract void registerForPreDhcpNotification();
+ public abstract void doQuit();
+}