| /* |
| * Copyright (C) 2016 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.Context; |
| import android.support.v7.preference.Preference; |
| import android.support.v7.preference.PreferenceScreen; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.settings.R; |
| import com.android.settings.core.PreferenceControllerMixin; |
| import com.android.settingslib.core.AbstractPreferenceController; |
| import com.android.settingslib.core.lifecycle.LifecycleObserver; |
| import com.android.settingslib.core.lifecycle.events.OnPause; |
| import com.android.settingslib.core.lifecycle.events.OnResume; |
| |
| public class UsbModePreferenceController extends AbstractPreferenceController |
| implements PreferenceControllerMixin, LifecycleObserver, OnResume, OnPause { |
| |
| private static final String KEY_USB_MODE = "usb_mode"; |
| |
| private UsbBackend mUsbBackend; |
| @VisibleForTesting |
| UsbConnectionBroadcastReceiver mUsbReceiver; |
| private Preference mUsbPreference; |
| |
| public UsbModePreferenceController(Context context, UsbBackend usbBackend) { |
| super(context); |
| mUsbBackend = usbBackend; |
| mUsbReceiver = new UsbConnectionBroadcastReceiver(mContext, (connected, newMode) -> { |
| updateSummary(mUsbPreference, connected, newMode); |
| }, mUsbBackend); |
| } |
| |
| @Override |
| public void displayPreference(PreferenceScreen screen) { |
| super.displayPreference(screen); |
| mUsbPreference = screen.findPreference(KEY_USB_MODE); |
| } |
| |
| @Override |
| public void updateState(Preference preference) { |
| updateSummary(preference, mUsbReceiver.isConnected(), mUsbBackend.getCurrentMode()); |
| } |
| |
| @Override |
| public boolean isAvailable() { |
| return true; |
| } |
| |
| @Override |
| public String getPreferenceKey() { |
| return KEY_USB_MODE; |
| } |
| |
| @Override |
| public void onPause() { |
| mUsbReceiver.unregister(); |
| } |
| |
| @Override |
| public void onResume() { |
| mUsbReceiver.register(); |
| } |
| |
| public static int getSummary(int mode) { |
| switch (mode) { |
| case UsbBackend.MODE_POWER_SINK | UsbBackend.MODE_DATA_NONE: |
| return R.string.usb_summary_charging_only; |
| case UsbBackend.MODE_POWER_SOURCE | UsbBackend.MODE_DATA_NONE: |
| return R.string.usb_summary_power_only; |
| case UsbBackend.MODE_POWER_SINK | UsbBackend.MODE_DATA_MTP: |
| return R.string.usb_summary_file_transfers; |
| case UsbBackend.MODE_POWER_SINK | UsbBackend.MODE_DATA_PTP: |
| return R.string.usb_summary_photo_transfers; |
| case UsbBackend.MODE_POWER_SINK | UsbBackend.MODE_DATA_MIDI: |
| return R.string.usb_summary_MIDI; |
| case UsbBackend.MODE_POWER_SINK | UsbBackend.MODE_DATA_TETHER: |
| return R.string.usb_summary_tether; |
| case UsbBackend.MODE_POWER_SOURCE | UsbBackend.MODE_DATA_MTP: |
| return R.string.usb_summary_file_transfers_power; |
| case UsbBackend.MODE_POWER_SOURCE | UsbBackend.MODE_DATA_PTP: |
| return R.string.usb_summary_photo_transfers_power; |
| case UsbBackend.MODE_POWER_SOURCE | UsbBackend.MODE_DATA_MIDI: |
| return R.string.usb_summary_MIDI_power; |
| case UsbBackend.MODE_POWER_SOURCE | UsbBackend.MODE_DATA_TETHER: |
| return R.string.usb_summary_tether_power; |
| default: |
| return R.string.usb_summary_charging_only; |
| } |
| } |
| |
| private void updateSummary(Preference preference, boolean connected, int mode) { |
| if (preference != null) { |
| if (connected) { |
| preference.setEnabled(true); |
| preference.setSummary(getSummary(mode)); |
| } else { |
| preference.setSummary(R.string.disconnected); |
| preference.setEnabled(false); |
| } |
| } |
| } |
| } |