Merge "Add device name to About Phone page."

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

@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2018 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;
+
+/**
+ * Filter to max the length of a Bluetotoh device name to 248 bytes, as defined by the spec.
+ */
+public class BluetoothLengthDeviceNameFilter extends Utf8ByteLengthFilter {
+    private static final int BLUETOOTH_NAME_MAX_LENGTH_BYTES = 248;
+
+    public BluetoothLengthDeviceNameFilter() {
+        super(BLUETOOTH_NAME_MAX_LENGTH_BYTES);
+    }
+}

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

@@ -43,8 +43,6 @@ import com.android.settings.core.instrumentation.InstrumentedDialogFragment;
  */
 abstract class BluetoothNameDialogFragment extends InstrumentedDialogFragment
         implements TextWatcher {
-    private static final int BLUETOOTH_NAME_MAX_LENGTH_BYTES = 248;
-
     private AlertDialog mAlertDialog;
     private Button mOkButton;
 
@@ -109,7 +107,7 @@ abstract class BluetoothNameDialogFragment extends InstrumentedDialogFragment
         View view = layoutInflater.inflate(R.layout.dialog_edittext, null);
         mDeviceNameView = (EditText) view.findViewById(R.id.edittext);
         mDeviceNameView.setFilters(new InputFilter[] {
-                new Utf8ByteLengthFilter(BLUETOOTH_NAME_MAX_LENGTH_BYTES)
+                new BluetoothLengthDeviceNameFilter()
         });
         mDeviceNameView.setText(deviceName);    // set initial value before adding listener
         if (!TextUtils.isEmpty(deviceName)) {

src/com/android/settings/bluetooth/Utf8ByteLengthFilter.java

@@ -37,7 +37,7 @@ import android.text.Spanned;
  * pairs are encoded as 4 bytes, with the caveat that the maximum
  * length will be constrained more conservatively than necessary.
  */
-class Utf8ByteLengthFilter implements InputFilter {
+public class Utf8ByteLengthFilter implements InputFilter {
     private final int mMaxBytes;
 
     Utf8ByteLengthFilter(int maxBytes) {

src/com/android/settings/deviceinfo/BrandedAccountPreferenceController.java

@@ -31,7 +31,7 @@ import com.android.settings.core.BasePreferenceController;
 import com.android.settings.overlay.FeatureFactory;
 
 public class BrandedAccountPreferenceController extends BasePreferenceController {
-    private static final String KEY_PREFERENCE_TITLE = "account";
+    private static final String KEY_PREFERENCE_TITLE = "branded_account";
     private final Account[] mAccounts;
 
     public BrandedAccountPreferenceController(Context context) {

src/com/android/settings/deviceinfo/DeviceNamePreferenceController.java

@@ -0,0 +1,151 @@
+/*
+ * Copyright (C) 2018 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.deviceinfo;
+
+import android.annotation.Nullable;
+import android.content.Context;
+import android.net.wifi.WifiConfiguration;
+import android.net.wifi.WifiManager;
+import android.os.Build;
+import android.provider.Settings;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+import android.text.SpannedString;
+
+import com.android.settings.bluetooth.BluetoothLengthDeviceNameFilter;
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.widget.ValidatedEditTextPreference;
+import com.android.settings.wifi.tether.WifiDeviceNameTextValidator;
+import com.android.settingslib.bluetooth.LocalBluetoothAdapter;
+import com.android.settingslib.bluetooth.LocalBluetoothManager;
+
+public class DeviceNamePreferenceController extends BasePreferenceController
+        implements ValidatedEditTextPreference.Validator, Preference.OnPreferenceChangeListener {
+    private static final String PREF_KEY = "device_name";
+    private String mDeviceName;
+    protected WifiManager mWifiManager;
+    private final WifiDeviceNameTextValidator mWifiDeviceNameTextValidator;
+    private ValidatedEditTextPreference mPreference;
+    @Nullable
+    private LocalBluetoothManager mBluetoothManager;
+
+    public DeviceNamePreferenceController(Context context) {
+        super(context, PREF_KEY);
+        mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
+        mWifiDeviceNameTextValidator = new WifiDeviceNameTextValidator();
+        initializeDeviceName();
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        mPreference = (ValidatedEditTextPreference) screen.findPreference(PREF_KEY);
+        mPreference.setSummary(getSummary());
+        mPreference.setValidator(this);
+    }
+
+    private void initializeDeviceName() {
+        mDeviceName = Settings.Global.getString(mContext.getContentResolver(),
+                Settings.Global.DEVICE_NAME);
+        if (mDeviceName == null) {
+            mDeviceName = Build.MODEL;
+        }
+    }
+
+    @Override
+    public String getSummary() {
+        return mDeviceName;
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AVAILABLE;
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return PREF_KEY;
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        mDeviceName = (String) newValue;
+        setDeviceName(mDeviceName);
+        preference.setSummary(getSummary());
+        return true;
+    }
+
+    @Override
+    public boolean isTextValid(String deviceName) {
+        // BluetoothNameDialogFragment describes BT name filter as a 248 bytes long cap.
+        // Given the restrictions presented by the SSID name filter (32 char), I don't believe it is
+        // possible to construct an SSID that is not a valid Bluetooth name.
+        return mWifiDeviceNameTextValidator.isTextValid(deviceName);
+    }
+
+    public void setLocalBluetoothManager(LocalBluetoothManager localBluetoothManager) {
+        mBluetoothManager = localBluetoothManager;
+    }
+
+    /**
+     * This method presumes that security/validity checks have already been passed.
+     */
+    private void setDeviceName(String deviceName) {
+        setSettingsGlobalDeviceName(deviceName);
+        setBluetoothDeviceName(deviceName);
+        setTetherSsidName(deviceName);
+    }
+
+    private void setSettingsGlobalDeviceName(String deviceName) {
+        Settings.Global.putString(mContext.getContentResolver(), Settings.Global.DEVICE_NAME,
+                deviceName);
+    }
+
+    private void setBluetoothDeviceName(String deviceName) {
+        // Bluetooth manager doesn't exist for certain devices.
+        if (mBluetoothManager == null) {
+            return;
+        }
+
+        final LocalBluetoothAdapter localBluetoothAdapter = mBluetoothManager.getBluetoothAdapter();
+        if (localBluetoothAdapter != null) {
+            localBluetoothAdapter.setName(getFilteredBluetoothString(deviceName));
+        }
+    }
+
+    /**
+     * Using a UTF8ByteLengthFilter, we can filter a string to be compliant with the Bluetooth spec.
+     * For more information, see {@link com.android.settings.bluetooth.BluetoothNameDialogFragment}.
+     */
+    private static final String getFilteredBluetoothString(final String deviceName) {
+        CharSequence filteredSequence = new BluetoothLengthDeviceNameFilter().filter(deviceName, 0, deviceName.length(),
+                new SpannedString(""),
+                0, 0);
+        // null -> use the original
+        if (filteredSequence == null) {
+            return deviceName;
+        }
+        return filteredSequence.toString();
+    }
+
+    private void setTetherSsidName(String deviceName) {
+        final WifiConfiguration config = mWifiManager.getWifiApConfiguration();
+        config.SSID = deviceName;
+        // TODO: If tether is running, turn off the AP and restart it after setting config.
+        mWifiManager.setWifiApConfiguration(config);
+    }
+}

src/com/android/settings/deviceinfo/aboutphone/MyDeviceInfoFragment.java

@@ -16,6 +16,8 @@
 
 package com.android.settings.deviceinfo.aboutphone;
 
+import static com.android.settings.bluetooth.Utils.getLocalBtManager;
+
 import android.app.Activity;
 import android.app.Fragment;
 import android.content.Context;
@@ -54,6 +56,7 @@ import com.android.settings.search.Indexable;
 import com.android.settings.widget.EntityHeaderController;
 import com.android.settingslib.core.AbstractPreferenceController;
 import com.android.settingslib.core.lifecycle.Lifecycle;
+import com.android.settings.deviceinfo.DeviceNamePreferenceController;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -102,6 +105,10 @@ public class MyDeviceInfoFragment extends DashboardFragment {
         final List<AbstractPreferenceController> controllers = new ArrayList<>();
         controllers.add(new PhoneNumberPreferenceController(context));
         controllers.add(new BrandedAccountPreferenceController(context));
+        DeviceNamePreferenceController deviceNamePreferenceController =
+                new DeviceNamePreferenceController(context);
+        deviceNamePreferenceController.setLocalBluetoothManager(getLocalBtManager(context));
+        controllers.add(deviceNamePreferenceController);
         controllers.add(new SimStatusPreferenceController(context, fragment));
         controllers.add(new DeviceModelPreferenceController(context, fragment));
         controllers.add(new ImeiInfoPreferenceController(context, fragment));
@@ -117,7 +124,6 @@ public class MyDeviceInfoFragment extends DashboardFragment {
         controllers.add(new FccEquipmentIdPreferenceController(context));
         controllers.add(
                 new BuildNumberPreferenceController(context, activity, fragment, lifecycle));
-        // TODO: Add preference controller for getting the device name.
         return controllers;
     }
 

src/com/android/settings/wifi/tether/WifiDeviceNameTextValidator.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2018 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.wifi.tether;
+
+import com.android.settings.widget.ValidatedEditTextPreference;
+import com.android.settings.wifi.WifiUtils;
+
+/**
+ * Validates a text field for a valid Wi-Fi SSID name.
+ */
+public class WifiDeviceNameTextValidator implements ValidatedEditTextPreference.Validator {
+    @Override
+    public boolean isTextValid(String value) {
+        return !WifiUtils.isSSIDTooLong(value) && !WifiUtils.isSSIDTooShort(value);
+    }
+}

src/com/android/settings/wifi/tether/WifiTetherSSIDPreferenceController.java

@@ -35,10 +35,12 @@ public class WifiTetherSSIDPreferenceController extends WifiTetherBasePreference
     static final String DEFAULT_SSID = "AndroidAP";
 
     private String mSSID;
+    private WifiDeviceNameTextValidator mWifiDeviceNameTextValidator;
 
     public WifiTetherSSIDPreferenceController(Context context,
             OnTetherConfigUpdateListener listener) {
         super(context, listener);
+        mWifiDeviceNameTextValidator = new WifiDeviceNameTextValidator();
     }
 
     @Override
@@ -70,7 +72,7 @@ public class WifiTetherSSIDPreferenceController extends WifiTetherBasePreference
 
     @Override
     public boolean isTextValid(String value) {
-        return !WifiUtils.isSSIDTooLong(value) && !WifiUtils.isSSIDTooShort(value);
+        return mWifiDeviceNameTextValidator.isTextValid(value);
     }
 
     public String getSSID() {