java/com/android/dialer/lookup/ForwardLookup.java


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/*
 * Copyright (C) 2014 Xiao-Long Chen <chillermillerlong@hotmail.com>
 *
 * 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.dialer.lookup;

import android.content.Context;
import android.location.Location;
import android.util.Log;

import com.android.dialer.phonenumbercache.ContactInfo;
import com.android.dialer.lookup.google.GoogleForwardLookup;
import com.android.dialer.lookup.openstreetmap.OpenStreetMapForwardLookup;

import java.util.List;

public abstract class ForwardLookup {
  private static final String TAG = ForwardLookup.class.getSimpleName();

  private static ForwardLookup INSTANCE = null;

  public static ForwardLookup getInstance(Context context) {
    String provider = LookupSettings.getForwardLookupProvider(context);

    if (INSTANCE == null || !isInstance(provider)) {
      Log.d(TAG, "Chosen forward lookup provider: " + provider);

      if (provider.equals(LookupSettings.FLP_GOOGLE)) {
        INSTANCE = new GoogleForwardLookup(context);
      } else if (provider.equals(LookupSettings.FLP_OPENSTREETMAP)) {
        INSTANCE = new OpenStreetMapForwardLookup(context);
      }
    }

    return INSTANCE;
  }

  private static boolean isInstance(String provider) {
    if (provider.equals(LookupSettings.FLP_GOOGLE)
        && INSTANCE instanceof GoogleForwardLookup) {
      return true;
    } else if (provider.equals(LookupSettings.FLP_OPENSTREETMAP)
        && INSTANCE instanceof OpenStreetMapForwardLookup) {
      return true;
    } else {
      return false;
    }
  }

  public abstract List<ContactInfo> lookup(Context context, String filter, Location lastLocation);
}