Implement face unlock running indicator on Keyguard.

Icon is still dummy.

Bug: 16502879
Change-Id: Ibea1e594f322e919049a42a26ff858d2169415e7

2 files changed, 29 insertions, 0 deletions

diff --git a/packages/Keyguard/src/com/android/keyguard/KeyguardUpdateMonitor.java b/packages/Keyguard/src/com/android/keyguard/KeyguardUpdateMonitor.java
index e4d7850..58cbaba 100644
--- a/packages/Keyguard/src/com/android/keyguard/KeyguardUpdateMonitor.java
+++ b/packages/Keyguard/src/com/android/keyguard/KeyguardUpdateMonitor.java
@@ -83,6 +83,11 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener {
     private static final int FAILED_BIOMETRIC_UNLOCK_ATTEMPTS_BEFORE_BACKUP = 3;
     private static final int LOW_BATTERY_THRESHOLD = 20;
 
+    private static final String ACTION_FACE_UNLOCK_STARTED
+            = "com.android.facelock.FACE_UNLOCK_STARTED";
+    private static final String ACTION_FACE_UNLOCK_STOPPED
+            = "com.android.facelock.FACE_UNLOCK_STOPPED";
+
     // Callback messages
     private static final int MSG_TIME_UPDATE = 301;
     private static final int MSG_BATTERY_UPDATE = 302;
@@ -107,6 +112,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener {
     private static final int MSG_KEYGUARD_BOUNCER_CHANGED = 322;
     private static final int MSG_FINGERPRINT_PROCESSED = 323;
     private static final int MSG_FINGERPRINT_ACQUIRED = 324;
+    private static final int MSG_FACE_UNLOCK_STATE_CHANGED = 325;
 
     private static KeyguardUpdateMonitor sInstance;
 
@@ -211,6 +217,9 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener {
                 case MSG_FINGERPRINT_PROCESSED:
                     handleFingerprintProcessed(msg.arg1);
                     break;
+                case MSG_FACE_UNLOCK_STATE_CHANGED:
+                    handleFaceUnlockStateChanged(msg.arg1 != 0);
+                    break;
             }
         }
     };
@@ -285,6 +294,15 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener {
         }
     }
 
+    private void handleFaceUnlockStateChanged(boolean running) {
+        for (int i = 0; i < mCallbacks.size(); i++) {
+            KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();
+            if (cb != null) {
+                cb.onFaceUnlockStateChanged(running);
+            }
+        }
+    }
+
     private boolean isTrustDisabled(int userId) {
         final DevicePolicyManager dpm =
                 (DevicePolicyManager) mContext.getSystemService(Context.DEVICE_POLICY_SERVICE);
@@ -376,6 +394,10 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener {
                        intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0), 0));
             } else if (Intent.ACTION_BOOT_COMPLETED.equals(action)) {
                 dispatchBootCompleted();
+            } else if (ACTION_FACE_UNLOCK_STARTED.equals(action)) {
+                mHandler.sendMessage(mHandler.obtainMessage(MSG_FACE_UNLOCK_STATE_CHANGED, 1, 0));
+            } else if (ACTION_FACE_UNLOCK_STOPPED.equals(action)) {
+                mHandler.sendMessage(mHandler.obtainMessage(MSG_FACE_UNLOCK_STATE_CHANGED, 0, 0));
             }
         }
     };
@@ -588,6 +610,8 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener {
         filter.addAction(DevicePolicyManager.ACTION_DEVICE_POLICY_MANAGER_STATE_CHANGED);
         filter.addAction(Intent.ACTION_USER_REMOVED);
         filter.addAction(AlarmManager.ACTION_NEXT_ALARM_CLOCK_CHANGED);
+        filter.addAction(ACTION_FACE_UNLOCK_STARTED);
+        filter.addAction(ACTION_FACE_UNLOCK_STOPPED);
         context.registerReceiver(mBroadcastReceiver, filter);
 
         final IntentFilter bootCompleteFilter = new IntentFilter();
diff --git a/packages/Keyguard/src/com/android/keyguard/KeyguardUpdateMonitorCallback.java b/packages/Keyguard/src/com/android/keyguard/KeyguardUpdateMonitorCallback.java
index 0aefa2d..4827e79 100644
--- a/packages/Keyguard/src/com/android/keyguard/KeyguardUpdateMonitorCallback.java
+++ b/packages/Keyguard/src/com/android/keyguard/KeyguardUpdateMonitorCallback.java
@@ -188,4 +188,9 @@ public class KeyguardUpdateMonitorCallback {
      * Called when fingerprint is acquired but not yet recognized
      */
     public void onFingerprintAcquired(int info) { }
+
+    /**
+     * Called when the state of face unlock changed.
+     */
+    public void onFaceUnlockStateChanged(boolean running) { }
 }