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   1 /**
   2  * Copyright (c) 2010-2020 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.meteoalerte.internal;
  14
  15 import static org.openhab.binding.meteoalerte.internal.MeteoAlerteBindingConstants.*;
  16
  17 import java.time.ZonedDateTime;
  18
  19 import org.eclipse.jdt.annotation.NonNullByDefault;
  20 import org.eclipse.jdt.annotation.Nullable;
  21 import org.openhab.binding.meteoalerte.internal.handler.MeteoAlerteHandler;
  22 import org.openhab.core.i18n.TimeZoneProvider;
  23 import org.openhab.core.thing.Thing;
  24 import org.openhab.core.thing.ThingTypeUID;
  25 import org.openhab.core.thing.binding.BaseThingHandlerFactory;
  26 import org.openhab.core.thing.binding.ThingHandler;
  27 import org.openhab.core.thing.binding.ThingHandlerFactory;
  28 import org.osgi.service.component.annotations.Activate;
  29 import org.osgi.service.component.annotations.Component;
  30 import org.osgi.service.component.annotations.Reference;
  31
  32 import com.google.gson.Gson;
  33 import com.google.gson.GsonBuilder;
  34 import com.google.gson.JsonDeserializer;
  35
  36 /**
  37  * The {@link MeteoAlerteHandlerFactory} is responsible for creating things and thing
  38  * handlers.
  39  *
  40  * @author Gaël L'hopital - Initial contribution
  41  */
  42 @Component(service = ThingHandlerFactory.class, configurationPid = "binding.meteoalerte")
  43 @NonNullByDefault
  44 public class MeteoAlerteHandlerFactory extends BaseThingHandlerFactory {
  45     private final Gson gson;
  46     // Needed for converting UTC time to local time
  47     private final TimeZoneProvider timeZoneProvider;
  48
  49     @Activate
  50     public MeteoAlerteHandlerFactory(@Reference TimeZoneProvider timeZoneProvider) {
  51         this.timeZoneProvider = timeZoneProvider;
  52         this.gson = new GsonBuilder()
  53                 .registerTypeAdapter(ZonedDateTime.class, (JsonDeserializer<ZonedDateTime>) (json, type,
  54                         jsonDeserializationContext) -> ZonedDateTime.parse(json.getAsJsonPrimitive().getAsString()))
  55                 .create();
  56     }
  57
  58     @Override
  59     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  60         return SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID);
  61     }
  62
  63     @Override
  64     protected @Nullable ThingHandler createHandler(Thing thing) {
  65         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
  66
  67         if (thingTypeUID.equals(THING_TYPE_METEO_ALERT)) {
  68             return new MeteoAlerteHandler(thing, timeZoneProvider, gson);
  69         }
  70
  71         return null;
  72     }
  73 }