1 files changed, 72 insertions, 0 deletions
diff --git a/service/java/com/android/server/wifi/WifiStaStateNotifier.java b/service/java/com/android/server/wifi/WifiStaStateNotifier.java
new file mode 100644
index 000000000..05dd87993
--- /dev/null
+++ b/service/java/com/android/server/wifi/WifiStaStateNotifier.java
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2020 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 com.android.server.wifi;
+
+import android.annotation.NonNull;
+import android.net.wifi.IStaStateCallback;
+import android.os.Handler;
+import android.os.IBinder;
+import android.os.Looper;
+import android.os.RemoteException;
+import android.util.Log;
+
+import com.android.server.wifi.util.ExternalCallbackTracker;
+
+
+public class WifiStaStateNotifier {
+    private final ExternalCallbackTracker<IStaStateCallback> mRegisteredCallbacks;
+    private static WifiInjector mWifiInjector;
+    private static final String TAG = "WifiStaStateNotifier";
+    private static final boolean DEBUG = false;
+
+    WifiStaStateNotifier(@NonNull Looper looper, WifiInjector wifiInjector) {
+        mRegisteredCallbacks = new ExternalCallbackTracker<IStaStateCallback>(new Handler(looper));
+        mWifiInjector = wifiInjector;
+    }
+
+    public void addCallback(IBinder binder, IStaStateCallback callback,
+                            int callbackIdentifier) {
+        if (DEBUG) Log.d(TAG, "addCallback");
+        if (mRegisteredCallbacks.getNumCallbacks() > 0) {
+            if (DEBUG) Log.e(TAG, "Failed to add callback, only support single request!");
+            return;
+        }
+        if (!mRegisteredCallbacks.add(binder, callback, callbackIdentifier)) {
+            if (DEBUG) Log.e(TAG, "Failed to add callback");
+            return;
+        }
+        mWifiInjector.getActiveModeWarden().registerStaEventCallback();
+    }
+
+    public void removeCallback(int callbackIdentifier) {
+        if (DEBUG) Log.d(TAG, "removeCallback");
+        mRegisteredCallbacks.remove(callbackIdentifier);
+        mWifiInjector.getActiveModeWarden().unregisterStaEventCallback();
+    }
+
+    public void onStaToBeOff() {
+        if (DEBUG) Log.d(TAG, "onStaToBeOff");
+        for (IStaStateCallback callback : mRegisteredCallbacks.getCallbacks()) {
+            try {
+                if (DEBUG) Log.d(TAG, "callback onStaToBeOff");
+                callback.onStaToBeOff();
+            } catch (RemoteException e) {
+                // do nothing
+            }
+        }
+    }
+}