git.basschouten.com Git - openhab-addons.git/blob

   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.nuvo.internal;
  14
  15 import java.lang.reflect.Method;
  16 import java.lang.reflect.Proxy;
  17
  18 import org.eclipse.jdt.annotation.NonNullByDefault;
  19 import org.eclipse.jdt.annotation.Nullable;
  20 import org.openhab.binding.nuvo.internal.handler.NuvoHandler;
  21 import org.openhab.core.automation.annotation.ActionInput;
  22 import org.openhab.core.automation.annotation.RuleAction;
  23 import org.openhab.core.thing.binding.ThingActions;
  24 import org.openhab.core.thing.binding.ThingActionsScope;
  25 import org.openhab.core.thing.binding.ThingHandler;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 /**
  30  * Some automation actions to be used with a {@link NuvoThingActions}
  31  *
  32  * @author Michael Lobstein - initial contribution
  33  *
  34  */
  35 @ThingActionsScope(name = "nuvo")
  36 @NonNullByDefault
  37 public class NuvoThingActions implements ThingActions, INuvoThingActions {
  38
  39     private final Logger logger = LoggerFactory.getLogger(NuvoThingActions.class);
  40
  41     private @Nullable NuvoHandler handler;
  42
  43     @RuleAction(label = "sendNuvoCommand", description = "Action that sends raw command to the amplifer")
  44     public void sendNuvoCommand(@ActionInput(name = "sendNuvoCommand") String rawCommand) {
  45         NuvoHandler localHandler = handler;
  46         if (localHandler != null) {
  47             localHandler.handleRawCommand(rawCommand);
  48             logger.debug("sendNuvoCommand called with raw command: {}", rawCommand);
  49         } else {
  50             logger.warn("unable to send command, NuvoHandler was null");
  51         }
  52     }
  53
  54     /** Static alias to support the old DSL rules engine and make the action available there. */
  55     public static void sendNuvoCommand(@Nullable ThingActions actions, String rawCommand)
  56             throws IllegalArgumentException {
  57         invokeMethodOf(actions).sendNuvoCommand(rawCommand);
  58     }
  59
  60     @Override
  61     public void setThingHandler(@Nullable ThingHandler handler) {
  62         this.handler = (NuvoHandler) handler;
  63     }
  64
  65     @Override
  66     public @Nullable ThingHandler getThingHandler() {
  67         return this.handler;
  68     }
  69
  70     private static INuvoThingActions invokeMethodOf(@Nullable ThingActions actions) {
  71         if (actions == null) {
  72             throw new IllegalArgumentException("actions cannot be null");
  73         }
  74         if (actions.getClass().getName().equals(NuvoThingActions.class.getName())) {
  75             if (actions instanceof NuvoThingActions) {
  76                 return (INuvoThingActions) actions;
  77             } else {
  78                 return (INuvoThingActions) Proxy.newProxyInstance(INuvoThingActions.class.getClassLoader(),
  79                         new Class[] { INuvoThingActions.class }, (Object proxy, Method method, Object[] args) -> {
  80                             Method m = actions.getClass().getDeclaredMethod(method.getName(),
  81                                     method.getParameterTypes());
  82                             return m.invoke(actions, args);
  83                         });
  84             }
  85         }
  86         throw new IllegalArgumentException("Actions is not an instance of NuvoThingActions");
  87     }
  88 }