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   1 /**
   2  * Copyright (c) 2010-2022 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.velux.internal.handler;
  14
  15 import static org.openhab.binding.velux.internal.VeluxBindingConstants.CHANNEL_VSHUTTER_POSITION;
  16
  17 import java.math.BigDecimal;
  18
  19 import org.eclipse.jdt.annotation.NonNullByDefault;
  20 import org.eclipse.jdt.annotation.Nullable;
  21 import org.openhab.binding.velux.internal.VeluxBindingProperties;
  22 import org.openhab.binding.velux.internal.VeluxItemType;
  23 import org.openhab.binding.velux.internal.VeluxRSBindingConfig;
  24 import org.openhab.binding.velux.internal.bridge.VeluxBridgeRunScene;
  25 import org.openhab.binding.velux.internal.handler.utils.ThingConfiguration;
  26 import org.openhab.binding.velux.internal.handler.utils.ThingProperty;
  27 import org.openhab.binding.velux.internal.things.VeluxScene;
  28 import org.openhab.binding.velux.internal.things.VeluxScene.SceneName;
  29 import org.openhab.core.library.types.PercentType;
  30 import org.openhab.core.library.types.UpDownType;
  31 import org.openhab.core.thing.ChannelUID;
  32 import org.openhab.core.types.Command;
  33 import org.openhab.core.types.State;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 /**
  38  * <B>Channel-specific retrieval and modification.</B>
  39  * <P>
  40  * This class implements the Channel <B>position</B> of the Thing <B>vshutter</B> :
  41  * <UL>
  42  * <LI><I>Velux</I> <B>bridge</B> &rarr; <B>OpenHAB</B>:
  43  * <P>
  44  * Information retrieval by method {@link #handleRefresh}.</LI>
  45  * </UL>
  46  * <UL>
  47  * <LI><B>OpenHAB</B> Event Bus &rarr; <I>Velux</I> <B>bridge</B>
  48  * <P>
  49  * Sending commands and value updates by method {@link #handleCommand}.</LI>
  50  * </UL>
  51  *
  52  * @author Guenther Schreiner - Initial contribution.
  53  */
  54 @NonNullByDefault
  55 final class ChannelVShutterPosition extends ChannelHandlerTemplate {
  56     private static final Logger LOGGER = LoggerFactory.getLogger(ChannelVShutterPosition.class);
  57
  58     /*
  59      * ************************
  60      * ***** Constructors *****
  61      */
  62
  63     // Suppress default constructor for non-instantiability
  64
  65     private ChannelVShutterPosition() {
  66         throw new AssertionError();
  67     }
  68
  69     /**
  70      * Communication method to retrieve information to update the channel value.
  71      *
  72      * @param channelUID The item passed as type {@link ChannelUID} for which a refresh is intended.
  73      * @param channelId The same item passed as type {@link String} for which a refresh is intended.
  74      * @param thisBridgeHandler The Velux bridge handler with a specific communication protocol which provides
  75      *            information for this channel.
  76      * @return newState The value retrieved for the passed channel, or <I>null</I> in case if there is no (new) value.
  77      */
  78     static @Nullable State handleRefresh(ChannelUID channelUID, String channelId,
  79             VeluxBridgeHandler thisBridgeHandler) {
  80         LOGGER.debug("handleRefresh({},{},{}) called.", channelUID, channelId, thisBridgeHandler);
  81         assert (channelId == CHANNEL_VSHUTTER_POSITION);
  82         State newState = null;
  83         do { // just for common exit
  84             if (!ThingConfiguration.exists(thisBridgeHandler, channelUID,
  85                     VeluxBindingProperties.PROPERTY_VSHUTTER_CURRENTLEVEL)) {
  86                 LOGGER.trace("handleRefresh(): aborting processing as current scene level is not set.");
  87                 break;
  88             }
  89             // Don't know why OH2 returns BigDecimal.
  90             BigDecimal rollershutterLevelBC = (BigDecimal) ThingConfiguration.getValue(thisBridgeHandler, channelUID,
  91                     VeluxBindingProperties.PROPERTY_VSHUTTER_CURRENTLEVEL);
  92             int rollershutterLevel = rollershutterLevelBC.intValue();
  93             LOGGER.trace("handleRefresh(): current level is {}.", rollershutterLevel);
  94             newState = new PercentType(rollershutterLevel);
  95         } while (false); // common exit
  96         LOGGER.trace("handleRefresh() returns {}.", newState);
  97         return newState;
  98     }
  99
 100     /**
 101      * Communication method to update the real world according to the passed channel value (or command).
 102      *
 103      * @param channelUID The item passed as type {@link ChannelUID} for which to following command is addressed to.
 104      * @param channelId The same item passed as type {@link String} for which a refresh is intended.
 105      * @param command The command passed as type {@link Command} for the mentioned item.
 106      * @param thisBridgeHandler The Velux bridge handler with a specific communication protocol which provides
 107      *            information for this channel.
 108      * @return newValue ...
 109      */
 110     @SuppressWarnings("PMD.CompareObjectsWithEquals")
 111     static @Nullable Command handleCommand(ChannelUID channelUID, String channelId, Command command,
 112             VeluxBridgeHandler thisBridgeHandler) {
 113         LOGGER.debug("handleCommand({},{},{},{}) called.", channelUID, channelId, command, thisBridgeHandler);
 114         Command newValue = null;
 115         // ThingProperty sceneLevels
 116         if (!ThingConfiguration.exists(thisBridgeHandler, channelUID,
 117                 VeluxBindingProperties.PROPERTY_VSHUTTER_SCENELEVELS)) {
 118             LOGGER.trace("handleCommand(): aborting processing as scene levels are not set.");
 119             return newValue;
 120         }
 121         String sceneLevels = (String) ThingConfiguration.getValue(thisBridgeHandler, channelUID,
 122                 VeluxBindingProperties.PROPERTY_VSHUTTER_SCENELEVELS);
 123         // ThingProperty currentLevel
 124         if (!ThingConfiguration.exists(thisBridgeHandler, channelUID,
 125                 VeluxBindingProperties.PROPERTY_VSHUTTER_CURRENTLEVEL)) {
 126             LOGGER.trace("handleCommand(): aborting processing as current scene level is not set.");
 127             return newValue;
 128         }
 129         // Don't know why OH2 returns BigDecimal.
 130         BigDecimal rollershutterLevelBC = (BigDecimal) ThingConfiguration.getValue(thisBridgeHandler, channelUID,
 131                 VeluxBindingProperties.PROPERTY_VSHUTTER_CURRENTLEVEL);
 132         int currentLevel = rollershutterLevelBC.intValue();
 133         LOGGER.trace("handleCommand(): current level is {}.", currentLevel);
 134
 135         VeluxRSBindingConfig thisRSBindingConfig = new VeluxRSBindingConfig(VeluxItemType.VSHUTTER_POSITION,
 136                 sceneLevels, currentLevel);
 137
 138         if ((UpDownType) command == UpDownType.UP) {
 139             currentLevel = thisRSBindingConfig.getNextDescendingLevel();
 140         } else if ((UpDownType) command == UpDownType.DOWN) {
 141             currentLevel = thisRSBindingConfig.getNextAscendingLevel();
 142         } else {
 143             LOGGER.info("handleCommand({},{}): ignoring command.", channelUID.getAsString(), command);
 144             return newValue;
 145         }
 146         LOGGER.trace("handleCommand(): next level is {}.", currentLevel);
 147         String sceneName = thisRSBindingConfig.getSceneName();
 148         LOGGER.trace("handleCommand(): scene name is {}.", sceneName);
 149         VeluxScene thisScene2 = thisBridgeHandler.bridgeParameters.scenes.getChannel().existingScenes
 150                 .get(new SceneName(sceneName));
 151         if (thisScene2 == VeluxScene.UNKNOWN) {
 152             LOGGER.warn(
 153                     "handleCommand(): aborting command as scene with name {} is not registered; please check your KLF scene definitions.",
 154                     sceneName);
 155             return newValue;
 156         }
 157         newValue = new PercentType(currentLevel);
 158         LOGGER.trace("handleCommand(): executing scene {} with index {}.", thisScene2,
 159                 thisScene2.getBridgeSceneIndex().toInt());
 160         new VeluxBridgeRunScene().execute(thisBridgeHandler.thisBridge, thisScene2.getBridgeSceneIndex().toInt());
 161
 162         LOGGER.trace("handleCommand(): updating level to {}.", currentLevel);
 163         ThingProperty.setValue(thisBridgeHandler, channelUID, VeluxBindingProperties.PROPERTY_VSHUTTER_CURRENTLEVEL,
 164                 thisRSBindingConfig.getLevel().toString());
 165         LOGGER.trace("handleCommand() returns {}.", newValue);
 166         return newValue;
 167     }
 168 }