Merge "AutoTileManager: Auto add cast tile when the device is casting."
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/AutoTileManager.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/AutoTileManager.java
index c9be2c8..007c50c 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/AutoTileManager.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/AutoTileManager.java
@@ -25,6 +25,8 @@
 import com.android.systemui.qs.AutoAddTracker;
 import com.android.systemui.qs.QSTileHost;
 import com.android.systemui.qs.SecureSetting;
+import com.android.systemui.statusbar.policy.CastController;
+import com.android.systemui.statusbar.policy.CastController.CastDevice;
 import com.android.systemui.statusbar.policy.DataSaverController;
 import com.android.systemui.statusbar.policy.DataSaverController.Listener;
 import com.android.systemui.statusbar.policy.HotspotController;
@@ -42,6 +44,7 @@
     public static final String INVERSION = "inversion";
     public static final String WORK = "work";
     public static final String NIGHT = "night";
+    public static final String CAST = "cast";
 
     private final Context mContext;
     private final QSTileHost mHost;
@@ -51,6 +54,7 @@
     private final DataSaverController mDataSaverController;
     private final ManagedProfileController mManagedProfileController;
     private final NightDisplayListener mNightDisplayListener;
+    private final CastController mCastController;
 
     @Inject
     public AutoTileManager(Context context, AutoAddTracker autoAddTracker, QSTileHost host,
@@ -58,7 +62,8 @@
             HotspotController hotspotController,
             DataSaverController dataSaverController,
             ManagedProfileController managedProfileController,
-            NightDisplayListener nightDisplayListener) {
+            NightDisplayListener nightDisplayListener,
+            CastController castController) {
         mAutoTracker = autoAddTracker;
         mContext = context;
         mHost = host;
@@ -67,6 +72,7 @@
         mDataSaverController = dataSaverController;
         mManagedProfileController = managedProfileController;
         mNightDisplayListener = nightDisplayListener;
+        mCastController = castController;
         if (!mAutoTracker.isAdded(HOTSPOT)) {
             hotspotController.addCallback(mHotspotCallback);
         }
@@ -95,6 +101,9 @@
                 && ColorDisplayManager.isNightDisplayAvailable(mContext)) {
             nightDisplayListener.setCallback(mNightDisplayCallback);
         }
+        if (!mAutoTracker.isAdded(CAST)) {
+            castController.addCallback(mCastCallback);
+        }
     }
 
     public void destroy() {
@@ -108,6 +117,7 @@
         if (ColorDisplayManager.isNightDisplayAvailable(mContext)) {
             mNightDisplayListener.setCallback(null);
         }
+        mCastController.removeCallback(mCastCallback);
     }
 
     public void unmarkTileAsAutoAdded(String tabSpec) {
@@ -181,4 +191,27 @@
             mHandler.post(() -> mNightDisplayListener.setCallback(null));
         }
     };
+
+    @VisibleForTesting
+    final CastController.Callback mCastCallback = new CastController.Callback() {
+        @Override
+        public void onCastDevicesChanged() {
+            if (mAutoTracker.isAdded(CAST)) return;
+
+            boolean isCasting = false;
+            for (CastDevice device : mCastController.getCastDevices()) {
+                if (device.state == CastDevice.STATE_CONNECTED
+                        || device.state == CastDevice.STATE_CONNECTING) {
+                    isCasting = true;
+                    break;
+                }
+            }
+
+            if (isCasting) {
+                mHost.addTile(CAST);
+                mAutoTracker.setTileAdded(CAST);
+                mHandler.post(() -> mCastController.removeCallback(mCastCallback));
+            }
+        }
+    };
 }
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/AutoTileManagerTest.java b/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/AutoTileManagerTest.java
index f3740c4..87699b8 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/AutoTileManagerTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/AutoTileManagerTest.java
@@ -16,6 +16,7 @@
 
 package com.android.systemui.statusbar.phone;
 
+import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.verify;
@@ -31,6 +32,8 @@
 import com.android.systemui.SysuiTestCase;
 import com.android.systemui.qs.AutoAddTracker;
 import com.android.systemui.qs.QSTileHost;
+import com.android.systemui.statusbar.policy.CastController;
+import com.android.systemui.statusbar.policy.CastController.CastDevice;
 import com.android.systemui.statusbar.policy.DataSaverController;
 import com.android.systemui.statusbar.policy.HotspotController;
 
@@ -40,6 +43,9 @@
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
+import java.util.Collections;
+import java.util.Set;
+
 @RunWith(AndroidTestingRunner.class)
 @RunWithLooper
 @SmallTest
@@ -47,6 +53,7 @@
 
     @Mock private QSTileHost mQsTileHost;
     @Mock private AutoAddTracker mAutoAddTracker;
+    @Mock private CastController mCastController;
 
     private AutoTileManager mAutoTileManager;
 
@@ -58,7 +65,8 @@
                 mock(HotspotController.class),
                 mock(DataSaverController.class),
                 mock(ManagedProfileController.class),
-                mock(NightDisplayListener.class));
+                mock(NightDisplayListener.class),
+                mCastController);
     }
 
     @Test
@@ -108,4 +116,24 @@
                 ColorDisplayManager.AUTO_MODE_DISABLED);
         verify(mQsTileHost, never()).addTile("night");
     }
+
+    private static Set<CastDevice> buildFakeCastDevice(boolean isCasting) {
+        CastDevice cd = new CastDevice();
+        cd.state = isCasting ? CastDevice.STATE_CONNECTED : CastDevice.STATE_DISCONNECTED;
+        return Collections.singleton(cd);
+    }
+
+    @Test
+    public void castTileAdded_whenDeviceIsCasting() {
+        doReturn(buildFakeCastDevice(true)).when(mCastController).getCastDevices();
+        mAutoTileManager.mCastCallback.onCastDevicesChanged();
+        verify(mQsTileHost).addTile("cast");
+    }
+
+    @Test
+    public void castTileNotAdded_whenDeviceIsNotCasting() {
+        doReturn(buildFakeCastDevice(false)).when(mCastController).getCastDevices();
+        mAutoTileManager.mCastCallback.onCastDevicesChanged();
+        verify(mQsTileHost, never()).addTile("cast");
+    }
 }