content: /*
   * 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 android.companion;
  
  import android.annotation.IntDef;
  import android.annotation.Nullable;
  import android.annotation.UnsupportedAppUsage;
  import android.os.Parcelable;
  
  import java.lang.annotation.Retention;
  import java.lang.annotation.RetentionPolicy;
  
  /**
   * A filter for companion devices of type {@code D}
   *
   * @param <D> Type of devices, filtered by this filter,
   *           e.g. {@link android.bluetooth.BluetoothDevice}, {@link android.net.wifi.ScanResult}
   */
  public interface DeviceFilter<D extends Parcelable> extends Parcelable {
  
      /** @hide */
      int MEDIUM_TYPE_BLUETOOTH = 0;
      /** @hide */
      int MEDIUM_TYPE_BLUETOOTH_LE = 1;
      /** @hide */
      int MEDIUM_TYPE_WIFI = 2;
  
      /**
       * @return whether the given device matches this filter
       *
       * @hide
       */
      @UnsupportedAppUsage
      boolean matches(D device);
  
      /** @hide */
      @UnsupportedAppUsage
      String getDeviceDisplayName(D device);
  
      /**  @hide */
      @MediumType int getMediumType();
  
      /**
       * A nullsafe {@link #matches(Parcelable)}, returning true if the filter is null
       *
       * @hide
       */
      static <D extends Parcelable> boolean matches(@Nullable DeviceFilter<D> filter, D device) {
          return filter == null || filter.matches(device);
      }
  
      /** @hide */
      @IntDef(prefix = { "MEDIUM_TYPE_" }, value = {
              MEDIUM_TYPE_BLUETOOTH,
              MEDIUM_TYPE_BLUETOOTH_LE,
              MEDIUM_TYPE_WIFI
      })
      @Retention(RetentionPolicy.SOURCE)
      @interface MediumType {}
  }
  