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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.hue.internal.handler;
  14
  15 import java.util.Locale;
  16 import java.util.Map;
  17 import java.util.concurrent.ConcurrentHashMap;
  18
  19 import org.eclipse.jdt.annotation.NonNullByDefault;
  20 import org.eclipse.jdt.annotation.Nullable;
  21 import org.openhab.core.thing.Channel;
  22 import org.openhab.core.thing.ChannelUID;
  23 import org.openhab.core.thing.binding.BaseDynamicStateDescriptionProvider;
  24 import org.openhab.core.thing.i18n.ChannelTypeI18nLocalizationService;
  25 import org.openhab.core.thing.type.DynamicStateDescriptionProvider;
  26 import org.openhab.core.types.StateDescription;
  27 import org.osgi.service.component.annotations.Activate;
  28 import org.osgi.service.component.annotations.Component;
  29 import org.osgi.service.component.annotations.Reference;
  30
  31 /**
  32  * Dynamic provider of state options for {@link HueBridgeHandler} while leaving other state description fields as
  33  * original.
  34  *
  35  * @author Hengrui Jiang - Initial contribution
  36  */
  37 @Component(service = { DynamicStateDescriptionProvider.class, HueStateDescriptionOptionProvider.class })
  38 @NonNullByDefault
  39 public class HueStateDescriptionOptionProvider extends BaseDynamicStateDescriptionProvider {
  40
  41     private final Map<ChannelUID, StateDescription> descriptions = new ConcurrentHashMap<>();
  42
  43     @Activate
  44     public HueStateDescriptionOptionProvider(
  45             final @Reference ChannelTypeI18nLocalizationService channelTypeI18nLocalizationService) {
  46         this.channelTypeI18nLocalizationService = channelTypeI18nLocalizationService;
  47     }
  48
  49     public void setDescription(ChannelUID channelUID, StateDescription description) {
  50         descriptions.put(channelUID, description);
  51     }
  52
  53     @Override
  54     public @Nullable StateDescription getStateDescription(Channel channel,
  55             @Nullable StateDescription originalStateDescription, @Nullable Locale locale) {
  56         StateDescription stateDescription = descriptions.get(channel.getUID());
  57         return stateDescription != null ? stateDescription
  58                 : super.getStateDescription(channel, originalStateDescription, locale);
  59     }
  60 }