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   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.velux.internal.handler;
  14
  15 import static org.openhab.binding.velux.internal.VeluxBindingConstants.CHANNEL_ACTUATOR_POSITION;
  16
  17 import org.eclipse.jdt.annotation.NonNullByDefault;
  18 import org.eclipse.jdt.annotation.Nullable;
  19 import org.openhab.core.library.types.OnOffType;
  20 import org.openhab.core.library.types.PercentType;
  21 import org.openhab.core.library.types.StopMoveType;
  22 import org.openhab.core.library.types.UpDownType;
  23 import org.openhab.core.thing.ChannelUID;
  24 import org.openhab.core.types.Command;
  25 import org.openhab.core.types.State;
  26 import org.openhab.binding.velux.internal.bridge.VeluxBridgeRunProductCommand;
  27 import org.openhab.binding.velux.internal.bridge.common.GetProduct;
  28 import org.openhab.binding.velux.internal.handler.utils.Thing2VeluxActuator;
  29 import org.openhab.binding.velux.internal.things.VeluxProductPosition;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 /**
  34  * <B>Channel-specific retrieval and modification.</B>
  35  * <P>
  36  * This class implements the Channel <B>position</B> of the Thing <B>actuator</B>:
  37  * <UL>
  38  * <LI><I>Velux</I> <B>bridge</B> &rarr; <B>OpenHAB</B>:
  39  * <P>
  40  * Information retrieval by method {@link #handleRefresh}.</LI>
  41  * </UL>
  42  * <UL>
  43  * <LI><B>OpenHAB</B> Event Bus &rarr; <I>Velux</I> <B>bridge</B>
  44  * <P>
  45  * Sending commands and value updates by method {@link #handleCommand}.</LI>
  46  * </UL>
  47  *
  48  * @author Guenther Schreiner - Initial contribution.
  49  */
  50 @NonNullByDefault
  51 final class ChannelActuatorPosition extends ChannelHandlerTemplate {
  52     private static final Logger LOGGER = LoggerFactory.getLogger(ChannelActuatorPosition.class);
  53
  54     // Constructors
  55
  56     /**
  57      * Suppress default constructor for non-instantiability.
  58      */
  59     private ChannelActuatorPosition() {
  60         throw new AssertionError();
  61     }
  62
  63     // Public methods
  64
  65     /**
  66      * Communication method to retrieve information to update the channel value.
  67      *
  68      * @param channelUID The item passed as type {@link ChannelUID} for which a refresh is intended.
  69      * @param channelId The same item passed as type {@link String} for which a refresh is intended.
  70      * @param thisBridgeHandler The Velux bridge handler with a specific communication protocol which provides
  71      *            information for this channel.
  72      * @return newState The value retrieved for the passed channel, or <I>null</I> in case if there is no (new) value.
  73      */
  74     static @Nullable State handleRefresh(ChannelUID channelUID, String channelId,
  75             VeluxBridgeHandler thisBridgeHandler) {
  76         LOGGER.debug("handleRefresh({},{},{}) called.", channelUID, channelId, thisBridgeHandler);
  77         State newState = null;
  78         do { // just for common exit
  79             if (thisBridgeHandler.bridgeParameters.actuators.autoRefresh(thisBridgeHandler.thisBridge)) {
  80                 LOGGER.trace("handleRefresh(): there are some existing products.");
  81             }
  82             Thing2VeluxActuator veluxActuator = thisBridgeHandler.channel2VeluxActuator.get(channelUID);
  83             GetProduct bcp = thisBridgeHandler.thisBridge.bridgeAPI().getProduct();
  84             if (bcp == null) {
  85                 LOGGER.trace("handleRefresh(): aborting processing as handler is null.");
  86                 break;
  87             }
  88             bcp.setProductId(veluxActuator.getProductBridgeIndex().toInt());
  89             if (thisBridgeHandler.thisBridge.bridgeCommunicate(bcp) && bcp.isCommunicationSuccessful()) {
  90                 try {
  91                     VeluxProductPosition position = new VeluxProductPosition(bcp.getProduct().getCurrentPosition());
  92                     if (position.isValid()) {
  93                         PercentType positionAsPercent = position.getPositionAsPercentType(veluxActuator.isInverted());
  94                         LOGGER.trace("handleRefresh(): found actuator at level {}.", positionAsPercent);
  95                         newState = positionAsPercent;
  96                     } else {
  97                         LOGGER.trace("handleRefresh(): level of actuator is unknown.");
  98                     }
  99                 } catch (Exception e) {
 100                     LOGGER.warn("handleRefresh(): getProducts() exception: {}.", e.getMessage());
 101                 }
 102             }
 103         } while (false); // common exit
 104         LOGGER.trace("handleRefresh() returns {}.", newState);
 105         return newState;
 106     }
 107
 108     /**
 109      * Communication method to update the real world according to the passed channel value (or command).
 110      *
 111      * @param channelUID The item passed as type {@link ChannelUID} for which to following command is addressed to.
 112      * @param channelId The same item passed as type {@link String} for which a refresh is intended.
 113      * @param command The command passed as type {@link Command} for the mentioned item.
 114      * @param thisBridgeHandler The Velux bridge handler with a specific communication protocol which provides
 115      *            information for this channel.
 116      * @return newValue ...
 117      */
 118     static @Nullable Command handleCommand(ChannelUID channelUID, String channelId, Command command,
 119             VeluxBridgeHandler thisBridgeHandler) {
 120         LOGGER.debug("handleCommand({},{},{},{}) called.", channelUID, channelId, command, thisBridgeHandler);
 121         Command newValue = null;
 122         do { // just for common exit
 123             assert thisBridgeHandler.bridgeParameters.actuators != null : "VeluxBridgeHandler.bridgeParameters.actuators not initialized.";
 124             if (thisBridgeHandler.bridgeParameters.actuators.autoRefresh(thisBridgeHandler.thisBridge)) {
 125                 LOGGER.trace("handleCommand(): there are some existing products.");
 126             }
 127             Thing2VeluxActuator veluxActuator = thisBridgeHandler.channel2VeluxActuator.get(channelUID);
 128             VeluxProductPosition targetLevel = VeluxProductPosition.UNKNOWN;
 129             if (channelId.equals(CHANNEL_ACTUATOR_POSITION)) {
 130                 if ((command instanceof UpDownType) && (command == UpDownType.UP)) {
 131                     LOGGER.trace("handleCommand(): found UP command.");
 132                     targetLevel = veluxActuator.isInverted() ? new VeluxProductPosition(PercentType.HUNDRED)
 133                             : new VeluxProductPosition(PercentType.ZERO);
 134                 } else if ((command instanceof UpDownType) && (command == UpDownType.DOWN)) {
 135                     LOGGER.trace("handleCommand(): found DOWN command.");
 136                     targetLevel = veluxActuator.isInverted() ? new VeluxProductPosition(PercentType.ZERO)
 137                             : new VeluxProductPosition(PercentType.HUNDRED);
 138                 } else if ((command instanceof StopMoveType) && (command == StopMoveType.STOP)) {
 139                     LOGGER.trace("handleCommand(): found STOP command.");
 140                     targetLevel = new VeluxProductPosition();
 141                 } else if (command instanceof PercentType) {
 142                     LOGGER.trace("handleCommand(): found command of type PercentType.");
 143                     PercentType ptCommand = (PercentType) command;
 144                     if (veluxActuator.isInverted()) {
 145                         ptCommand = new PercentType(PercentType.HUNDRED.intValue() - ptCommand.intValue());
 146                     }
 147                     LOGGER.trace("handleCommand(): found command to set level to {}.", ptCommand);
 148                     targetLevel = new VeluxProductPosition(ptCommand);
 149                 } else {
 150                     LOGGER.info("handleCommand({},{}): ignoring command.", channelUID.getAsString(), command);
 151                     break;
 152                 }
 153             } else {
 154                 if ((command instanceof OnOffType) && (command == OnOffType.ON)) {
 155                     LOGGER.trace("handleCommand(): found ON command.");
 156                     targetLevel = veluxActuator.isInverted() ? new VeluxProductPosition(PercentType.HUNDRED)
 157                             : new VeluxProductPosition(PercentType.ZERO);
 158                 } else if ((command instanceof OnOffType) && (command == OnOffType.OFF)) {
 159                     LOGGER.trace("handleCommand(): found OFF command.");
 160                     targetLevel = veluxActuator.isInverted() ? new VeluxProductPosition(PercentType.ZERO)
 161                             : new VeluxProductPosition(PercentType.HUNDRED);
 162                 } else {
 163                     LOGGER.info("handleCommand({},{}): ignoring command.", channelUID.getAsString(), command);
 164                     break;
 165                 }
 166             }
 167             LOGGER.debug("handleCommand(): sending command with target level {}.", targetLevel);
 168             new VeluxBridgeRunProductCommand().sendCommand(thisBridgeHandler.thisBridge,
 169                     veluxActuator.getProductBridgeIndex().toInt(), targetLevel);
 170             LOGGER.trace("handleCommand(): The new shutter level will be send through the home monitoring events.");
 171
 172             if (thisBridgeHandler.bridgeParameters.actuators.autoRefresh(thisBridgeHandler.thisBridge)) {
 173                 LOGGER.trace("handleCommand(): position of actuators are updated.");
 174             }
 175         } while (false); // common exit
 176         return newValue;
 177     }
 178 }