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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 org.eclipse.jdt.annotation.NonNullByDefault;
  18 import org.eclipse.jdt.annotation.Nullable;
  19 import org.openhab.binding.systeminfo.internal.handler.SystemInfoHandler;
  20 import org.openhab.binding.systeminfo.internal.model.SystemInfoInterface;
  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.Component;
  27 import org.osgi.service.component.annotations.Reference;
  28
  29 /**
  30  * The {@link SystemInfoHandlerFactory} is responsible for creating things and thing
  31  * handlers.
  32  *
  33  * @author Svilen Valkanov - Initial contribution
  34  * @author Lyubomir Papazov - Pass systeminfo service to the SystemInfoHandler constructor
  35  * @author Wouter Born - Add null annotations
  36  * @author Mark Herwege - Add dynamic creation of extra channels
  37  */
  38 @NonNullByDefault
  39 @Component(service = ThingHandlerFactory.class, configurationPid = "binding.systeminfo")
  40 public class SystemInfoHandlerFactory extends BaseThingHandlerFactory {
  41     private @NonNullByDefault({}) SystemInfoInterface systeminfo;
  42     private @NonNullByDefault({}) SystemInfoThingTypeProvider thingTypeProvider;
  43
  44     @Override
  45     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  46         return BINDING_ID.equals(thingTypeUID.getBindingId())
  47                 && thingTypeUID.getId().startsWith(THING_TYPE_COMPUTER_ID);
  48     }
  49
  50     @Override
  51     protected @Nullable ThingHandler createHandler(Thing thing) {
  52         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
  53         if (supportsThingType(thingTypeUID)) {
  54             String extString = "-" + thing.getUID().getId();
  55             ThingTypeUID extThingTypeUID = new ThingTypeUID(BINDING_ID, THING_TYPE_COMPUTER_ID + extString);
  56             if (thingTypeProvider.getThingType(extThingTypeUID, null) == null) {
  57                 thingTypeProvider.createThingType(extThingTypeUID);
  58                 thingTypeProvider.storeChannelsConfig(thing); // Save the current channels configs, will be restored
  59                                                               // after thing type change.
  60             }
  61             return new SystemInfoHandler(thing, thingTypeProvider, systeminfo);
  62         }
  63         return null;
  64     }
  65
  66     @Reference
  67     public void bindSystemInfo(SystemInfoInterface systeminfo) {
  68         this.systeminfo = systeminfo;
  69     }
  70
  71     public void unbindSystemInfo(SystemInfoInterface systeminfo) {
  72         this.systeminfo = null;
  73     }
  74
  75     @Reference
  76     public void setSystemInfoThingTypeProvider(SystemInfoThingTypeProvider thingTypeProvider) {
  77         this.thingTypeProvider = thingTypeProvider;
  78     }
  79
  80     public void unsetSystemInfoThingTypeProvider(SystemInfoThingTypeProvider thingTypeProvider) {
  81         this.thingTypeProvider = null;
  82     }
  83 }