Add layout for advanced BT detail header

If device supports metadata, then we display advanced UI in Bluetooth
details header. This CL adds layout for this header.

In advanced layout, it will show:
1. Device name
2. Left, right and case icon
3. Left, right and case battery level

Once API is ready, following CL will get metadata from it and set it
to UI.
Bug: 122460277
Test: RunSettingsRoboTests
Change-Id: Ide044cf9705f350b431b2cb3a9ad82cc4425a17e

src/com/android/settings/bluetooth/AdvancedBluetoothDetailsHeaderController.java

@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2019 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.settings.bluetooth;
+
+import android.content.Context;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffColorFilter;
+import android.graphics.drawable.Drawable;
+import android.widget.TextView;
+
+import androidx.annotation.VisibleForTesting;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.R;
+import com.android.settings.Utils;
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.fuelgauge.BatteryMeterView;
+import com.android.settingslib.bluetooth.CachedBluetoothDevice;
+import com.android.settingslib.widget.LayoutPreference;
+
+/**
+ * This class adds a header with device name and status (connected/disconnected, etc.).
+ */
+public class AdvancedBluetoothDetailsHeaderController extends BasePreferenceController {
+
+    private LayoutPreference mLayoutPreference;
+    private CachedBluetoothDevice mCachedDevice;
+
+    public AdvancedBluetoothDetailsHeaderController(Context context, String prefKey) {
+        super(context, prefKey);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        //TODO(b/122460277): decide whether it is available by {@code bluetoothDevice}
+        return CONDITIONALLY_UNAVAILABLE;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        mLayoutPreference = screen.findPreference(getPreferenceKey());
+        mLayoutPreference.setVisible(isAvailable());
+        refresh();
+    }
+
+    public void init(CachedBluetoothDevice cachedBluetoothDevice) {
+        mCachedDevice = cachedBluetoothDevice;
+    }
+
+    private void refresh() {
+        if (mLayoutPreference != null && mCachedDevice != null) {
+            final TextView title = mLayoutPreference.findViewById(R.id.entity_header_title);
+            title.setText(mCachedDevice.getName());
+            final TextView summary = mLayoutPreference.findViewById(R.id.entity_header_summary);
+            summary.setText(mCachedDevice.getConnectionSummary());
+        }
+    }
+
+    @VisibleForTesting
+    Drawable createBtBatteryIcon(Context context, int level) {
+        final BatteryMeterView.BatteryMeterDrawable drawable =
+                new BatteryMeterView.BatteryMeterDrawable(context,
+                        context.getColor(R.color.meter_background_color));
+        drawable.setBatteryLevel(level);
+        drawable.setShowPercent(false);
+        drawable.setBatteryColorFilter(new PorterDuffColorFilter(
+                Utils.getColorAttrDefaultColor(context, android.R.attr.colorControlNormal),
+                PorterDuff.Mode.SRC_IN));
+
+        return drawable;
+    }
+
+}

src/com/android/settings/bluetooth/BluetoothDetailsButtonsController.java

@@ -90,4 +90,4 @@ public class BluetoothDetailsButtonsController extends BluetoothDetailsControlle
         return KEY_ACTION_BUTTONS;
     }
 
-}
+}

src/com/android/settings/bluetooth/BluetoothDetailsController.java

@@ -89,4 +89,4 @@ public abstract class BluetoothDetailsController extends AbstractPreferenceContr
      * should update the preferences it manages based on the new state.
      */
     protected abstract void refresh();
-}
+}

src/com/android/settings/bluetooth/BluetoothDetailsHeaderController.java

@@ -62,7 +62,8 @@ public class BluetoothDetailsHeaderController extends BluetoothDetailsController
     protected void setHeaderProperties() {
         final Pair<Drawable, String> pair = BluetoothUtils
                 .getBtClassDrawableWithDescription(mContext, mCachedDevice,
-                mContext.getResources().getFraction(R.fraction.bt_battery_scale_fraction, 1, 1));
+                        mContext.getResources().getFraction(R.fraction.bt_battery_scale_fraction, 1,
+                                1));
         String summaryText = mCachedDevice.getConnectionSummary();
         // If both the hearing aids are connected, two device status should be shown.
         // If Second Summary is unavailable, to set it to null.
@@ -84,4 +85,4 @@ public class BluetoothDetailsHeaderController extends BluetoothDetailsController
     public String getPreferenceKey() {
         return KEY_DEVICE_HEADER;
     }
-}
+}

src/com/android/settings/bluetooth/BluetoothDetailsMacAddressController.java

@@ -62,4 +62,4 @@ public class BluetoothDetailsMacAddressController extends BluetoothDetailsContro
         }
         return mFooterPreference.getKey();
     }
-}
+}

src/com/android/settings/bluetooth/BluetoothDetailsProfilesController.java

@@ -264,4 +264,4 @@ public class BluetoothDetailsProfilesController extends BluetoothDetailsControll
     public String getPreferenceKey() {
         return KEY_PROFILES_GROUP;
     }
-}
+}

src/com/android/settings/bluetooth/BluetoothDeviceDetailsFragment.java

@@ -108,6 +108,7 @@ public class BluetoothDeviceDetailsFragment extends RestrictedDashboardFragment
         mManager = getLocalBluetoothManager(context);
         mCachedDevice = getCachedDevice(mDeviceAddress);
         super.onAttach(context);
+        use(AdvancedBluetoothDetailsHeaderController.class).init(mCachedDevice);
 
         final BluetoothFeatureProvider featureProvider = FeatureFactory.getFactory(
                 context).getBluetoothFeatureProvider(context);