src/com/android/settings/connecteddevice/usb/ConnectedUsbDeviceUpdater.java

   1 /*
   2  * Copyright (C) 2017 The Android Open Source Project
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.android.settings.connecteddevice.usb;
  17
  18 import android.content.Context;
  19 import android.os.Bundle;
  20 import android.support.annotation.VisibleForTesting;
  21 import android.support.v14.preference.PreferenceFragment;
  22
  23 import com.android.settings.R;
  24 import com.android.settings.SettingsActivity;
  25 import com.android.settings.connecteddevice.DevicePreferenceCallback;
  26 import com.android.settings.dashboard.DashboardFragment;
  27 import com.android.settings.widget.GearPreference;
  28
  29 /**
  30  * Controller to maintain connected usb device
  31  */
  32 public class ConnectedUsbDeviceUpdater {
  33     private PreferenceFragment mFragment;
  34     private UsbBackend mUsbBackend;
  35     private DevicePreferenceCallback mDevicePreferenceCallback;
  36     @VisibleForTesting
  37     GearPreference mUsbPreference;
  38     @VisibleForTesting
  39     UsbConnectionBroadcastReceiver mUsbReceiver;
  40
  41     @VisibleForTesting
  42     UsbConnectionBroadcastReceiver.UsbConnectionListener mUsbConnectionListener =
  43             (connected, newMode) -> {
  44                 if (connected) {
  45                     mUsbPreference.setSummary(
  46                             UsbModePreferenceController.getSummary(mUsbBackend.getCurrentMode()));
  47                     mDevicePreferenceCallback.onDeviceAdded(mUsbPreference);
  48                 } else {
  49                     mDevicePreferenceCallback.onDeviceRemoved(mUsbPreference);
  50                 }
  51             };
  52
  53     public ConnectedUsbDeviceUpdater(DashboardFragment fragment,
  54             DevicePreferenceCallback devicePreferenceCallback) {
  55         this(fragment, devicePreferenceCallback, new UsbBackend(fragment.getContext()));
  56     }
  57
  58     @VisibleForTesting
  59     ConnectedUsbDeviceUpdater(DashboardFragment fragment,
  60             DevicePreferenceCallback devicePreferenceCallback, UsbBackend usbBackend) {
  61         mFragment = fragment;
  62         mDevicePreferenceCallback = devicePreferenceCallback;
  63         mUsbBackend = usbBackend;
  64         mUsbReceiver = new UsbConnectionBroadcastReceiver(fragment.getContext(),
  65                 mUsbConnectionListener, mUsbBackend);
  66     }
  67
  68     public void registerCallback() {
  69         // This method could handle multiple register
  70         mUsbReceiver.register();
  71     }
  72
  73     public void unregisterCallback() {
  74         mUsbReceiver.unregister();
  75     }
  76
  77     public void initUsbPreference(Context context) {
  78         mUsbPreference = new GearPreference(context, null /* AttributeSet */);
  79         mUsbPreference.setTitle(R.string.usb_pref);
  80         mUsbPreference.setIcon(R.drawable.ic_usb);
  81         mUsbPreference.setSelectable(false);
  82         mUsbPreference.setOnGearClickListener((GearPreference p) -> {
  83             // New version - uses a separate screen.
  84             final Bundle args = new Bundle();
  85             final SettingsActivity activity = (SettingsActivity) mFragment.getContext();
  86             activity.startPreferencePanel(mFragment,
  87                     UsbDetailsFragment.class.getName(), args,
  88                     R.string.device_details_title, null /* titleText */, null /* resultTo */, 0);
  89         });
  90
  91         forceUpdate();
  92     }
  93
  94     private void forceUpdate() {
  95         // Register so we can get the connection state from sticky intent.
  96         //TODO(b/70336520): Use an API to get data instead of sticky intent
  97         mUsbReceiver.register();
  98     }
  99 }