| /* |
| * 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.bluetooth; |
| |
| import android.bluetooth.BluetoothAdapter; |
| import android.bluetooth.BluetoothDevice; |
| import android.content.Context; |
| import android.support.annotation.VisibleForTesting; |
| import android.text.TextUtils; |
| |
| import com.android.settings.R; |
| import com.android.settings.widget.SummaryUpdater; |
| import com.android.settingslib.bluetooth.BluetoothCallback; |
| import com.android.settingslib.bluetooth.CachedBluetoothDevice; |
| import com.android.settingslib.bluetooth.LocalBluetoothAdapter; |
| import com.android.settingslib.bluetooth.LocalBluetoothManager; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Set; |
| |
| /** |
| * Helper class that listeners to bluetooth callback and notify client when there is update in |
| * bluetooth summary info. |
| */ |
| public final class BluetoothSummaryUpdater extends SummaryUpdater implements BluetoothCallback { |
| |
| private final LocalBluetoothManager mBluetoothManager; |
| private final LocalBluetoothAdapter mBluetoothAdapter; |
| |
| private boolean mEnabled; |
| private int mConnectionState; |
| |
| public BluetoothSummaryUpdater(Context context, OnSummaryChangeListener listener, |
| LocalBluetoothManager bluetoothManager) { |
| super(context, listener); |
| mBluetoothManager = bluetoothManager; |
| mBluetoothAdapter = mBluetoothManager != null |
| ? mBluetoothManager.getBluetoothAdapter() : null; |
| } |
| |
| @Override |
| public void onBluetoothStateChanged(int bluetoothState) { |
| mEnabled = bluetoothState == BluetoothAdapter.STATE_ON |
| || bluetoothState == BluetoothAdapter.STATE_TURNING_ON; |
| notifyChangeIfNeeded(); |
| } |
| |
| @Override |
| public void onConnectionStateChanged(CachedBluetoothDevice cachedDevice, int state) { |
| mConnectionState = state; |
| updateConnected(); |
| notifyChangeIfNeeded(); |
| } |
| |
| @Override |
| public void onScanningStateChanged(boolean started) { |
| } |
| |
| @Override |
| public void onDeviceAdded(CachedBluetoothDevice cachedDevice) { |
| } |
| |
| @Override |
| public void onDeviceDeleted(CachedBluetoothDevice cachedDevice) { |
| } |
| |
| @Override |
| public void onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState) { |
| } |
| |
| @Override |
| public void register(boolean listening) { |
| if (mBluetoothAdapter == null) { |
| return; |
| } |
| if (listening) { |
| mEnabled = mBluetoothAdapter.isEnabled(); |
| mConnectionState = mBluetoothAdapter.getConnectionState(); |
| notifyChangeIfNeeded(); |
| mBluetoothManager.getEventManager().registerCallback(this); |
| } else { |
| mBluetoothManager.getEventManager().unregisterCallback(this); |
| } |
| } |
| |
| @Override |
| public String getSummary() { |
| if (!mEnabled) { |
| return mContext.getString(R.string.bluetooth_disabled); |
| } |
| switch (mConnectionState) { |
| case BluetoothAdapter.STATE_CONNECTED: |
| return getConnectedDeviceSummary(); |
| case BluetoothAdapter.STATE_CONNECTING: |
| return mContext.getString(R.string.bluetooth_connecting); |
| case BluetoothAdapter.STATE_DISCONNECTING: |
| return mContext.getString(R.string.bluetooth_disconnecting); |
| default: |
| return mContext.getString(R.string.disconnected); |
| } |
| } |
| |
| private void updateConnected() { |
| if (mBluetoothAdapter == null) { |
| return; |
| } |
| // Make sure our connection state is up to date. |
| int state = mBluetoothAdapter.getConnectionState(); |
| if (state != mConnectionState) { |
| mConnectionState = state; |
| return; |
| } |
| final Collection<CachedBluetoothDevice> devices = getDevices(); |
| if (devices == null) { |
| mConnectionState = BluetoothAdapter.STATE_DISCONNECTED; |
| return; |
| } |
| if (mConnectionState == BluetoothAdapter.STATE_CONNECTED) { |
| CachedBluetoothDevice connectedDevice = null; |
| for (CachedBluetoothDevice device : devices) { |
| if (device.isConnected()) { |
| connectedDevice = device; |
| break; |
| } |
| } |
| if (connectedDevice == null) { |
| // If somehow we think we are connected, but have no connected devices, we |
| // aren't connected. |
| mConnectionState = BluetoothAdapter.STATE_DISCONNECTED; |
| } |
| } |
| } |
| |
| private Collection<CachedBluetoothDevice> getDevices() { |
| return mBluetoothManager != null |
| ? mBluetoothManager.getCachedDeviceManager().getCachedDevicesCopy() |
| : null; |
| } |
| |
| @VisibleForTesting |
| String getConnectedDeviceSummary() { |
| String deviceName = null; |
| int count = 0; |
| final Set<BluetoothDevice> devices = mBluetoothAdapter.getBondedDevices(); |
| if (devices == null || devices.isEmpty()) { |
| return null; |
| } |
| |
| for (BluetoothDevice device : devices) { |
| if (device.isConnected()) { |
| deviceName = device.getName(); |
| count++; |
| if (count > 1) { |
| break; |
| } |
| } |
| } |
| |
| return count > 1 ? mContext.getString(R.string.bluetooth_connected_multiple_devices_summary) |
| : mContext.getString(R.string.bluetooth_connected_summary, deviceName); |
| } |
| |
| } |