MAP: Add developer option to control map version

Bug: 146916756
Test: manual
Change-Id: If32db03072e02b7b2477c7da943b6b0e6a9be260

1 files changed, 79 insertions, 0 deletions

diff --git a/src/com/android/settings/development/BluetoothMapVersionPreferenceController.java b/src/com/android/settings/development/BluetoothMapVersionPreferenceController.java
new file mode 100644
index 0000000000..ac20627004
--- /dev/null
+++ b/src/com/android/settings/development/BluetoothMapVersionPreferenceController.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2020 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.content.Context;
+import android.os.SystemProperties;
+import android.text.TextUtils;
+
+import androidx.annotation.VisibleForTesting;
+import androidx.preference.ListPreference;
+import androidx.preference.Preference;
+
+import com.android.settings.R;
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.development.DeveloperOptionsPreferenceController;
+
+/**
+ * Preference controller to control Bluetooth MAP version
+ */
+public class BluetoothMapVersionPreferenceController extends DeveloperOptionsPreferenceController
+        implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin {
+
+    private static final String BLUETOOTH_SELECT_MAP_VERSION_KEY =
+            "bluetooth_select_map_version";
+
+    @VisibleForTesting
+    static final String BLUETOOTH_MAP_VERSION_PROPERTY = "persist.bluetooth.mapversion";
+
+    private final String[] mListValues;
+    private final String[] mListSummaries;
+
+    public BluetoothMapVersionPreferenceController(Context context) {
+        super(context);
+
+        mListValues = context.getResources().getStringArray(R.array.bluetooth_map_version_values);
+        mListSummaries = context.getResources().getStringArray(R.array.bluetooth_map_versions);
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return BLUETOOTH_SELECT_MAP_VERSION_KEY;
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        SystemProperties.set(BLUETOOTH_MAP_VERSION_PROPERTY, newValue.toString());
+        updateState(mPreference);
+        return true;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        final ListPreference listPreference = (ListPreference) preference;
+        final String currentValue = SystemProperties.get(BLUETOOTH_MAP_VERSION_PROPERTY);
+        int index = 0; // Defaults to MAP 1.2
+        for (int i = 0; i < mListValues.length; i++) {
+            if (TextUtils.equals(currentValue, mListValues[i])) {
+                index = i;
+                break;
+            }
+        }
+        listPreference.setValue(mListValues[index]);
+        listPreference.setSummary(mListSummaries[index]);
+    }
+}