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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.systeminfo.internal;
  14
  15 import static org.openhab.binding.systeminfo.internal.SysteminfoBindingConstants.THING_TYPE_COMPUTER;
  16
  17 import java.util.Collections;
  18 import java.util.Set;
  19
  20 import org.eclipse.jdt.annotation.NonNullByDefault;
  21 import org.eclipse.jdt.annotation.Nullable;
  22 import org.openhab.binding.systeminfo.internal.handler.SysteminfoHandler;
  23 import org.openhab.binding.systeminfo.internal.model.SysteminfoInterface;
  24 import org.openhab.core.thing.Thing;
  25 import org.openhab.core.thing.ThingTypeUID;
  26 import org.openhab.core.thing.binding.BaseThingHandlerFactory;
  27 import org.openhab.core.thing.binding.ThingHandler;
  28 import org.openhab.core.thing.binding.ThingHandlerFactory;
  29 import org.osgi.service.component.annotations.Component;
  30 import org.osgi.service.component.annotations.Reference;
  31
  32 /**
  33  * The {@link SysteminfoHandlerFactory} is responsible for creating things and thing
  34  * handlers.
  35  *
  36  * @author Svilen Valkanov - Initial contribution
  37  * @author Lyubomir Papazov - Pass systeminfo service to the SysteminfoHandler constructor
  38  * @author Wouter Born - Add null annotations
  39  */
  40 @NonNullByDefault
  41 @Component(service = ThingHandlerFactory.class, configurationPid = "binding.systeminfo")
  42 public class SysteminfoHandlerFactory extends BaseThingHandlerFactory {
  43
  44     private static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = Collections.singleton(THING_TYPE_COMPUTER);
  45
  46     private @NonNullByDefault({}) SysteminfoInterface systeminfo;
  47
  48     @Override
  49     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  50         return SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID);
  51     }
  52
  53     @Override
  54     protected @Nullable ThingHandler createHandler(Thing thing) {
  55         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
  56
  57         if (thingTypeUID.equals(THING_TYPE_COMPUTER)) {
  58             return new SysteminfoHandler(thing, systeminfo);
  59         }
  60
  61         return null;
  62     }
  63
  64     @Reference
  65     public void bindSystemInfo(SysteminfoInterface systeminfo) {
  66         this.systeminfo = systeminfo;
  67     }
  68
  69     public void unbindSystemInfo(SysteminfoInterface systeminfo) {
  70         this.systeminfo = null;
  71     }
  72 }