| /* |
| * 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.connecteddevice.usb; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.hardware.usb.UsbManager; |
| import android.hardware.usb.UsbPortStatus; |
| |
| import com.android.settingslib.core.lifecycle.LifecycleObserver; |
| import com.android.settingslib.core.lifecycle.events.OnPause; |
| import com.android.settingslib.core.lifecycle.events.OnResume; |
| |
| /** |
| * Receiver to receive usb update and use {@link UsbConnectionListener} to invoke callback |
| */ |
| public class UsbConnectionBroadcastReceiver extends BroadcastReceiver implements LifecycleObserver, |
| OnResume, OnPause { |
| private Context mContext; |
| private UsbConnectionListener mUsbConnectionListener; |
| private boolean mListeningToUsbEvents; |
| private UsbBackend mUsbBackend; |
| |
| private boolean mConnected; |
| private long mFunctions; |
| private int mDataRole; |
| private int mPowerRole; |
| |
| public UsbConnectionBroadcastReceiver(Context context, |
| UsbConnectionListener usbConnectionListener, UsbBackend backend) { |
| mContext = context; |
| mUsbConnectionListener = usbConnectionListener; |
| mUsbBackend = backend; |
| |
| mFunctions = UsbManager.FUNCTION_NONE; |
| mDataRole = UsbPortStatus.DATA_ROLE_NONE; |
| mPowerRole = UsbPortStatus.POWER_ROLE_NONE; |
| } |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (UsbManager.ACTION_USB_STATE.equals(intent.getAction())) { |
| mConnected = intent.getExtras().getBoolean(UsbManager.USB_CONNECTED) |
| || intent.getExtras().getBoolean(UsbManager.USB_HOST_CONNECTED); |
| long functions = UsbManager.FUNCTION_NONE; |
| if (intent.getExtras().getBoolean(UsbManager.USB_FUNCTION_MTP) |
| && intent.getExtras().getBoolean(UsbManager.USB_DATA_UNLOCKED, false)) { |
| functions |= UsbManager.FUNCTION_MTP; |
| } |
| if (intent.getExtras().getBoolean(UsbManager.USB_FUNCTION_PTP) |
| && intent.getExtras().getBoolean(UsbManager.USB_DATA_UNLOCKED, false)) { |
| functions |= UsbManager.FUNCTION_PTP; |
| } |
| if (intent.getExtras().getBoolean(UsbManager.USB_FUNCTION_MIDI)) { |
| functions |= UsbManager.FUNCTION_MIDI; |
| } |
| if (intent.getExtras().getBoolean(UsbManager.USB_FUNCTION_RNDIS)) { |
| functions |= UsbManager.FUNCTION_RNDIS; |
| } |
| mFunctions = functions; |
| mDataRole = mUsbBackend.getDataRole(); |
| mPowerRole = mUsbBackend.getPowerRole(); |
| } else if (UsbManager.ACTION_USB_PORT_CHANGED.equals(intent.getAction())) { |
| UsbPortStatus portStatus = intent.getExtras() |
| .getParcelable(UsbManager.EXTRA_PORT_STATUS); |
| if (portStatus != null) { |
| mDataRole = portStatus.getCurrentDataRole(); |
| mPowerRole = portStatus.getCurrentPowerRole(); |
| } |
| } |
| if (mUsbConnectionListener != null) { |
| mUsbConnectionListener.onUsbConnectionChanged(mConnected, mFunctions, mPowerRole, |
| mDataRole); |
| } |
| } |
| |
| public void register() { |
| if (!mListeningToUsbEvents) { |
| mConnected = false; |
| final IntentFilter intentFilter = new IntentFilter(); |
| intentFilter.addAction(UsbManager.ACTION_USB_STATE); |
| intentFilter.addAction(UsbManager.ACTION_USB_PORT_CHANGED); |
| final Intent intent = mContext.registerReceiver(this, intentFilter); |
| // TODO b/77240599 use an api instead of sticky intent |
| if (intent != null) { |
| onReceive(mContext, intent); |
| } |
| mListeningToUsbEvents = true; |
| } |
| } |
| |
| public void unregister() { |
| if (mListeningToUsbEvents) { |
| mContext.unregisterReceiver(this); |
| mListeningToUsbEvents = false; |
| } |
| } |
| |
| public boolean isConnected() { |
| return mConnected; |
| } |
| |
| @Override |
| public void onResume() { |
| register(); |
| } |
| |
| @Override |
| public void onPause() { |
| unregister(); |
| } |
| |
| /** |
| * Interface definition for a callback to be invoked when usb connection is changed. |
| */ |
| interface UsbConnectionListener { |
| void onUsbConnectionChanged(boolean connected, long functions, int powerRole, int dataRole); |
| } |
| } |