content: /*
   * Copyright (C) 2018 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.server.usb;
  
  import android.annotation.NonNull;
  import android.annotation.Nullable;
  import android.content.ActivityNotFoundException;
  import android.content.Context;
  import android.content.Intent;
  import android.content.pm.ResolveInfo;
  import android.hardware.usb.UsbAccessory;
  import android.hardware.usb.UsbDevice;
  import android.hardware.usb.UsbManager;
  import android.os.UserHandle;
  import android.util.Slog;
  
  import java.util.ArrayList;
  
  /**
   * UsbResolveActivityManager creates UI dialogs for user to pick or confirm handler for
   * usb attach event.
   *
   * @hide
   */
  class UsbHandlerManager {
      private static final String LOG_TAG = UsbHandlerManager.class.getSimpleName();
  
      private final Context mContext;
  
      UsbHandlerManager(@NonNull Context context) {
          mContext = context;
      }
  
      /**
       * Shows dialog to user to allow them to optionally visit that URL for more
       * information or software downloads if the attached USB accessory has a valid
       * URL associated with it.
       *
       * @param accessory The accessory to confirm in the UI dialog
       * @param user The user to start the UI dialog
       */
      void showUsbAccessoryUriActivity(@NonNull UsbAccessory accessory,
              @NonNull UserHandle user) {
          String uri = accessory.getUri();
          if (uri != null && uri.length() > 0) {
              // display URI to user
              Intent dialogIntent = createDialogIntent();
              dialogIntent.setClassName("com.android.systemui",
                      "com.android.systemui.usb.UsbAccessoryUriActivity");
              dialogIntent.putExtra(UsbManager.EXTRA_ACCESSORY, accessory);
              dialogIntent.putExtra("uri", uri);
              try {
                  mContext.startActivityAsUser(dialogIntent, user);
              } catch (ActivityNotFoundException e) {
                  Slog.e(LOG_TAG, "unable to start UsbAccessoryUriActivity");
              }
          }
      }
  
      /**
       * Shows dialog to user to confirm the package to start when the USB device
       * or accessory is attached and there is only one package claims to handle this
       * USB device or accessory.
       *
       * @param rInfo The ResolveInfo of the package to confirm in the UI dialog
       * @param device The USB device to confirm
       * @param accessory The USB accessory to confirm
       */
      void confirmUsbHandler(@NonNull ResolveInfo rInfo, @Nullable UsbDevice device,
              @Nullable UsbAccessory accessory) {
          Intent resolverIntent = createDialogIntent();
          // start UsbConfirmActivity if there is only one choice
          resolverIntent.setClassName("com.android.systemui",
                  "com.android.systemui.usb.UsbConfirmActivity");
          resolverIntent.putExtra("rinfo", rInfo);
          UserHandle user =
                  UserHandle.getUserHandleForUid(rInfo.activityInfo.applicationInfo.uid);
  
          if (device != null) {
              resolverIntent.putExtra(UsbManager.EXTRA_DEVICE, device);
          } else {
              resolverIntent.putExtra(UsbManager.EXTRA_ACCESSORY, accessory);
          }
  
          try {
              mContext.startActivityAsUser(resolverIntent, user);
          } catch (ActivityNotFoundException e) {
              Slog.e(LOG_TAG, "unable to start activity " + resolverIntent, e);
          }
      }
  
      /**
       * Shows dialog to user to select the package to start when the USB device
       * or accessory is attached and there are more than one package claim to handle this
       * USB device or accessory.
       *
       * @param matches The available resolutions of the intent
       * @param user The user to start UI dialog
       * @param intent The intent to start the UI dialog
       */
      void selectUsbHandler(@NonNull ArrayList<ResolveInfo> matches,
              @NonNull UserHandle user, @NonNull Intent intent) {
          Intent resolverIntent = createDialogIntent();
          resolverIntent.setClassName("com.android.systemui",
                  "com.android.systemui.usb.UsbResolverActivity");
          resolverIntent.putParcelableArrayListExtra("rlist", matches);
          resolverIntent.putExtra(Intent.EXTRA_INTENT, intent);
  
          try {
              mContext.startActivityAsUser(resolverIntent, user);
          } catch (ActivityNotFoundException e) {
              Slog.e(LOG_TAG, "unable to start activity " + resolverIntent, e);
          }
      }
  
      private Intent createDialogIntent() {
          Intent intent = new Intent();
          intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
          return intent;
      }
  }
  