Introduce BluetoothAudioChannelModePreferenceCtrl

- Create new BluetoothAudioChannelModePreferenceController
 - Create controller inside the DashboardFragment
 - Port logic from DevelopmentSettings into the controller

Bug: 34203528
Test: make RunSettingsRoboTests -j40
Change-Id: I4abe87dd70be83c8b3cf2a3ad43b8856a01eadbb

src/com/android/settings/development/BluetoothAudioChannelModePreferenceController.java

@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2017 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.development;
+
+import android.bluetooth.BluetoothCodecConfig;
+import android.content.Context;
+
+import com.android.settings.R;
+import com.android.settingslib.core.lifecycle.Lifecycle;
+
+public class BluetoothAudioChannelModePreferenceController extends
+        AbstractBluetoothA2dpPreferenceController {
+
+    private static final int DEFAULT_INDEX = 0;
+    private static final String BLUETOOTH_SELECT_A2DP_CHANNEL_MODE_KEY =
+            "bluetooth_select_a2dp_channel_mode";
+
+    public BluetoothAudioChannelModePreferenceController(Context context, Lifecycle lifecycle,
+            BluetoothA2dpConfigStore store) {
+        super(context, lifecycle, store);
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return BLUETOOTH_SELECT_A2DP_CHANNEL_MODE_KEY;
+    }
+
+    @Override
+    protected String[] getListValues() {
+        return mContext.getResources().getStringArray(
+                R.array.bluetooth_a2dp_codec_channel_mode_values);
+    }
+
+    @Override
+    protected String[] getListSummaries() {
+        return mContext.getResources().getStringArray(
+                R.array.bluetooth_a2dp_codec_channel_mode_summaries);
+    }
+
+    @Override
+    protected int getDefaultIndex() {
+        return DEFAULT_INDEX;
+    }
+
+    @Override
+    protected void writeConfigurationValues(Object newValue) {
+        final int index = mPreference.findIndexOfValue(newValue.toString());
+        int channelModeValue = BluetoothCodecConfig.CHANNEL_MODE_NONE; // default
+        switch (index) {
+            case 0:
+                // Reset to default
+                break;
+            case 1:
+                channelModeValue = BluetoothCodecConfig.CHANNEL_MODE_MONO;
+                break;
+            case 2:
+                channelModeValue = BluetoothCodecConfig.CHANNEL_MODE_STEREO;
+                break;
+            default:
+                break;
+        }
+        mBluetoothA2dpConfigStore.setChannelMode(channelModeValue);
+    }
+
+    @Override
+    protected int getCurrentA2dpSettingIndex(BluetoothCodecConfig config) {
+        final int channelMode = config.getChannelMode();
+        int index = DEFAULT_INDEX;
+        switch (channelMode) {
+            case BluetoothCodecConfig.CHANNEL_MODE_MONO:
+                index = 1;
+                break;
+            case BluetoothCodecConfig.CHANNEL_MODE_STEREO:
+                index = 2;
+                break;
+            case BluetoothCodecConfig.CHANNEL_MODE_NONE:
+            default:
+                break;
+        }
+        return index;
+    }
+}

src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java

@@ -383,7 +383,8 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
                 bluetoothA2dpConfigStore));
         controllers.add(new BluetoothAudioBitsPerSamplePreferenceController(context, lifecycle,
                 bluetoothA2dpConfigStore));
-        // bluetooth audio channel mode
+        controllers.add(new BluetoothAudioChannelModePreferenceController(context, lifecycle,
+                bluetoothA2dpConfigStore));
         // bluetooth audio ldac codec: playback quality
         controllers.add(new ShowTapsPreferenceController(context));
         controllers.add(new PointerLocationPreferenceController(context));

tests/robotests/src/android/bluetooth/BluetoothCodecConfig.java

@@ -30,6 +30,7 @@ public class BluetoothCodecConfig {
     public static final int BITS_PER_SAMPLE_NONE = 0;
     public static final int CHANNEL_MODE_NONE = 0;
     public static final int BITS_PER_SAMPLE_24 =  0x1 << 1;
+    public static final int CHANNEL_MODE_STEREO = 0x1 << 1;
 
     public int getSampleRate() {
         return 0;
@@ -42,4 +43,8 @@ public class BluetoothCodecConfig {
     public int getBitsPerSample() {
         return 0;
     }
+
+    public int getChannelMode() {
+        return 0;
+    }
 }

tests/robotests/src/com/android/settings/development/BluetoothAudioChannelModePreferenceControllerTest.java

@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2017 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.development;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.bluetooth.BluetoothCodecConfig;
+import android.content.Context;
+import android.support.v7.preference.ListPreference;
+import android.support.v7.preference.PreferenceScreen;
+
+import com.android.settings.TestConfig;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+import com.android.settingslib.core.lifecycle.Lifecycle;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class BluetoothAudioChannelModePreferenceControllerTest {
+
+    @Mock
+    private BluetoothCodecConfig mBluetoothCodecConfig;
+    @Mock
+    private ListPreference mPreference;
+    @Mock
+    private PreferenceScreen mScreen;
+    @Mock
+    private BluetoothA2dpConfigStore mBluetoothA2dpConfigStore;
+
+    /**
+     * 0: Use System Selection (Default)
+     * 1: Mono
+     * 2: Stereo
+     */
+    private String[] mListValues;
+    private Context mContext;
+    private BluetoothAudioChannelModePreferenceController mController;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mController = spy(new BluetoothAudioChannelModePreferenceController(mContext,
+                new Lifecycle(), mBluetoothA2dpConfigStore));
+        mListValues = mController.getListValues();
+        when(mScreen.findPreference(mController.getPreferenceKey())).thenReturn(mPreference);
+        mController.displayPreference(mScreen);
+    }
+
+    @Test
+    public void writeConfigurationValues_option2_shouldWriteOption2ToSharedStore() {
+        when(mPreference.findIndexOfValue(mListValues[2])).thenReturn(2);
+        mController.writeConfigurationValues(mListValues[2]);
+
+        verify(mBluetoothA2dpConfigStore).setChannelMode(BluetoothCodecConfig.CHANNEL_MODE_STEREO);
+    }
+
+    @Test
+    public void writeConfigurationValues_default_shouldSetDefault() {
+        when(mPreference.findIndexOfValue(mListValues[0])).thenReturn(0);
+        mController.writeConfigurationValues(mListValues[0]);
+
+        verify(mBluetoothA2dpConfigStore).setChannelMode(
+                BluetoothCodecConfig.CHANNEL_MODE_NONE);
+    }
+
+    @Test
+    public void getCurrentA2dpSettingIndex_option2_shouldReturnSecondIndex() {
+        when(mBluetoothCodecConfig.getChannelMode()).thenReturn(
+                BluetoothCodecConfig.CHANNEL_MODE_STEREO);
+
+        final int index = mController.getCurrentA2dpSettingIndex(mBluetoothCodecConfig);
+
+        assertThat(index).isEqualTo(2);
+    }
+
+    @Test
+    public void getCurrentA2dpSettingIndex_unknownOption_shouldReturnDefault() {
+        when(mBluetoothCodecConfig.getCodecType()).thenReturn(1381391835);
+
+        final int index = mController.getCurrentA2dpSettingIndex(mBluetoothCodecConfig);
+
+        assertThat(index).isEqualTo(0);
+    }
+}