1 files changed, 88 insertions, 0 deletions
diff --git a/java/com/android/dialer/app/voicemail/WiredHeadsetManager.java b/java/com/android/dialer/app/voicemail/WiredHeadsetManager.java
new file mode 100644
index 000000000..24d4c6ff7
--- /dev/null
+++ b/java/com/android/dialer/app/voicemail/WiredHeadsetManager.java
@@ -0,0 +1,88 @@
+/*
+ * 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 com.android.dialer.app.voicemail;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.media.AudioManager;
+import android.util.Log;
+
+/** Listens for and caches headset state. */
+class WiredHeadsetManager {
+
+  private static final String TAG = WiredHeadsetManager.class.getSimpleName();
+  private final WiredHeadsetBroadcastReceiver mReceiver;
+  private boolean mIsPluggedIn;
+  private Listener mListener;
+  private Context mContext;
+
+  WiredHeadsetManager(Context context) {
+    mContext = context;
+    mReceiver = new WiredHeadsetBroadcastReceiver();
+
+    AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
+    mIsPluggedIn = audioManager.isWiredHeadsetOn();
+  }
+
+  void setListener(Listener listener) {
+    mListener = listener;
+  }
+
+  boolean isPluggedIn() {
+    return mIsPluggedIn;
+  }
+
+  void registerReceiver() {
+    // Register for misc other intent broadcasts.
+    IntentFilter intentFilter = new IntentFilter(Intent.ACTION_HEADSET_PLUG);
+    mContext.registerReceiver(mReceiver, intentFilter);
+  }
+
+  void unregisterReceiver() {
+    mContext.unregisterReceiver(mReceiver);
+  }
+
+  private void onHeadsetPluggedInChanged(boolean isPluggedIn) {
+    if (mIsPluggedIn != isPluggedIn) {
+      Log.v(TAG, "onHeadsetPluggedInChanged, mIsPluggedIn: " + mIsPluggedIn + " -> " + isPluggedIn);
+      boolean oldIsPluggedIn = mIsPluggedIn;
+      mIsPluggedIn = isPluggedIn;
+      if (mListener != null) {
+        mListener.onWiredHeadsetPluggedInChanged(oldIsPluggedIn, mIsPluggedIn);
+      }
+    }
+  }
+
+  interface Listener {
+
+    void onWiredHeadsetPluggedInChanged(boolean oldIsPluggedIn, boolean newIsPluggedIn);
+  }
+
+  /** Receiver for wired headset plugged and unplugged events. */
+  private class WiredHeadsetBroadcastReceiver extends BroadcastReceiver {
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+      if (AudioManager.ACTION_HEADSET_PLUG.equals(intent.getAction())) {
+        boolean isPluggedIn = intent.getIntExtra("state", 0) == 1;
+        Log.v(TAG, "ACTION_HEADSET_PLUG event, plugged in: " + isPluggedIn);
+        onHeadsetPluggedInChanged(isPluggedIn);
+      }
+    }
+  }
+}