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   1 /**
   2  * Copyright (c) 2010-2024 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.systeminfo.internal;
  14
  15 import static org.openhab.binding.systeminfo.internal.SystemInfoBindingConstants.*;
  16
  17 import java.util.Set;
  18
  19 import org.eclipse.jdt.annotation.NonNullByDefault;
  20 import org.eclipse.jdt.annotation.Nullable;
  21 import org.openhab.binding.systeminfo.internal.handler.SystemInfoHandler;
  22 import org.openhab.binding.systeminfo.internal.model.SystemInfoInterface;
  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.Component;
  29 import org.osgi.service.component.annotations.Reference;
  30
  31 /**
  32  * The {@link SystemInfoHandlerFactory} is responsible for creating things and thing
  33  * handlers.
  34  *
  35  * @author Svilen Valkanov - Initial contribution
  36  * @author Lyubomir Papazov - Pass systeminfo service to the SystemInfoHandler constructor
  37  * @author Wouter Born - Add null annotations
  38  * @author Mark Herwege - Add dynamic creation of extra channels
  39  */
  40 @NonNullByDefault
  41 @Component(service = ThingHandlerFactory.class, configurationPid = "binding.systeminfo")
  42 public class SystemInfoHandlerFactory extends BaseThingHandlerFactory {
  43     private @NonNullByDefault({}) SystemInfoInterface systeminfo;
  44     private @NonNullByDefault({}) SystemInfoThingTypeProvider thingTypeProvider;
  45
  46     private static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = Set.of(THING_TYPE_COMPUTER,
  47             THING_TYPE_COMPUTER_IMPL);
  48
  49     @Override
  50     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  51         return SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID);
  52     }
  53
  54     @Override
  55     protected @Nullable ThingHandler createHandler(Thing thing) {
  56         if (THING_TYPE_COMPUTER.equals(thing.getThingTypeUID())) {
  57             if (thingTypeProvider.getThingType(THING_TYPE_COMPUTER_IMPL, null) == null) {
  58                 thingTypeProvider.createThingType(THING_TYPE_COMPUTER_IMPL);
  59                 // Save the current channels configs, will be restored after thing type change.
  60                 thingTypeProvider.storeChannelsConfig(thing);
  61             }
  62             return new SystemInfoHandler(thing, thingTypeProvider, systeminfo);
  63         } else if (THING_TYPE_COMPUTER_IMPL.equals(thing.getThingTypeUID())) {
  64             return new SystemInfoHandler(thing, thingTypeProvider, systeminfo);
  65         }
  66         return null;
  67     }
  68
  69     @Reference
  70     public void bindSystemInfo(SystemInfoInterface systeminfo) {
  71         this.systeminfo = systeminfo;
  72     }
  73
  74     public void unbindSystemInfo(SystemInfoInterface systeminfo) {
  75         this.systeminfo = null;
  76     }
  77
  78     @Reference
  79     public void setSystemInfoThingTypeProvider(SystemInfoThingTypeProvider thingTypeProvider) {
  80         this.thingTypeProvider = thingTypeProvider;
  81     }
  82
  83     public void unsetSystemInfoThingTypeProvider(SystemInfoThingTypeProvider thingTypeProvider) {
  84         this.thingTypeProvider = null;
  85     }
  86 }