1 /* 2 * Copyright (C) 2018 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 17 package com.android.settings.connecteddevice.usb; 18 19 import android.content.Context; 20 import android.graphics.drawable.Drawable; 21 import android.os.Bundle; 22 23 import com.android.internal.annotations.VisibleForTesting; 24 import com.android.internal.logging.nano.MetricsProto; 25 import com.android.settings.R; 26 import com.android.settings.Utils; 27 import com.android.settings.widget.RadioButtonPickerFragment; 28 import com.android.settingslib.widget.CandidateInfo; 29 import com.android.settingslib.widget.FooterPreference; 30 import com.android.settingslib.widget.FooterPreferenceMixin; 31 32 import com.google.android.collect.Lists; 33 34 import java.util.List; 35 36 /** 37 * Provides options for selecting the default USB mode. 38 */ 39 public class UsbDefaultFragment extends RadioButtonPickerFragment { 40 @VisibleForTesting 41 UsbBackend mUsbBackend; 42 43 @Override onAttach(Context context)44 public void onAttach(Context context) { 45 super.onAttach(context); 46 mUsbBackend = new UsbBackend(context); 47 } 48 49 @Override onCreatePreferences(Bundle savedInstanceState, String rootKey)50 public void onCreatePreferences(Bundle savedInstanceState, String rootKey) { 51 super.onCreatePreferences(savedInstanceState, rootKey); 52 FooterPreferenceMixin footer = new FooterPreferenceMixin(this, this.getLifecycle()); 53 FooterPreference pref = footer.createFooterPreference(); 54 pref.setTitle(R.string.usb_default_info); 55 } 56 57 @Override getMetricsCategory()58 public int getMetricsCategory() { 59 return MetricsProto.MetricsEvent.USB_DEFAULT; 60 } 61 62 @Override getPreferenceScreenResId()63 protected int getPreferenceScreenResId() { 64 return R.xml.usb_default_fragment; 65 } 66 67 @Override getCandidates()68 protected List<? extends CandidateInfo> getCandidates() { 69 List<CandidateInfo> ret = Lists.newArrayList(); 70 for (final long option : UsbDetailsFunctionsController.FUNCTIONS_MAP.keySet()) { 71 final String title = getContext().getString( 72 UsbDetailsFunctionsController.FUNCTIONS_MAP.get(option)); 73 final String key = UsbBackend.usbFunctionsToString(option); 74 75 // Only show supported functions 76 if (mUsbBackend.areFunctionsSupported(option)) { 77 ret.add(new CandidateInfo(true /* enabled */) { 78 @Override 79 public CharSequence loadLabel() { 80 return title; 81 } 82 83 @Override 84 public Drawable loadIcon() { 85 return null; 86 } 87 88 @Override 89 public String getKey() { 90 return key; 91 } 92 }); 93 } 94 } 95 return ret; 96 } 97 98 @Override getDefaultKey()99 protected String getDefaultKey() { 100 return UsbBackend.usbFunctionsToString(mUsbBackend.getDefaultUsbFunctions()); 101 } 102 103 @Override setDefaultKey(String key)104 protected boolean setDefaultKey(String key) { 105 long functions = UsbBackend.usbFunctionsFromString(key); 106 if (!Utils.isMonkeyRunning()) { 107 mUsbBackend.setDefaultUsbFunctions(functions); 108 } 109 return true; 110 } 111 }