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   1 /**
   2  * Copyright (c) 2010-2021 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.airquality.internal;
  14
  15 import static org.openhab.binding.airquality.internal.AirQualityBindingConstants.*;
  16
  17 import org.eclipse.jdt.annotation.NonNullByDefault;
  18 import org.eclipse.jdt.annotation.Nullable;
  19 import org.openhab.binding.airquality.internal.handler.AirQualityHandler;
  20 import org.openhab.core.i18n.TimeZoneProvider;
  21 import org.openhab.core.thing.Thing;
  22 import org.openhab.core.thing.ThingTypeUID;
  23 import org.openhab.core.thing.binding.BaseThingHandlerFactory;
  24 import org.openhab.core.thing.binding.ThingHandler;
  25 import org.openhab.core.thing.binding.ThingHandlerFactory;
  26 import org.osgi.service.component.annotations.Activate;
  27 import org.osgi.service.component.annotations.Component;
  28 import org.osgi.service.component.annotations.Reference;
  29
  30 import com.google.gson.Gson;
  31
  32 /**
  33  * The {@link AirQualityHandlerFactory} is responsible for creating things and thing
  34  * handlers.
  35  *
  36  * @author Kuba Wolanin - Initial contribution
  37  */
  38 @Component(service = ThingHandlerFactory.class, configurationPid = "binding.airquality")
  39 @NonNullByDefault
  40 public class AirQualityHandlerFactory extends BaseThingHandlerFactory {
  41     private final Gson gson = new Gson();
  42     private final TimeZoneProvider timeZoneProvider;
  43
  44     @Activate
  45     public AirQualityHandlerFactory(final @Reference TimeZoneProvider timeZoneProvider) {
  46         this.timeZoneProvider = timeZoneProvider;
  47     }
  48
  49     @Override
  50     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  51         return SUPPORTED_THING_TYPES.contains(thingTypeUID);
  52     }
  53
  54     @Override
  55     protected @Nullable ThingHandler createHandler(Thing thing) {
  56         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
  57
  58         if (THING_TYPE_AQI.equals(thingTypeUID)) {
  59             return new AirQualityHandler(thing, gson, timeZoneProvider);
  60         }
  61
  62         return null;
  63     }
  64 }