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   1 /**
   2  * Copyright (c) 2010-2023 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.velbus.internal.handler;
  14
  15 import org.eclipse.jdt.annotation.NonNullByDefault;
  16 import org.openhab.binding.velbus.internal.packets.VelbusMemoTextPacket;
  17 import org.openhab.core.library.types.StringType;
  18 import org.openhab.core.thing.ChannelUID;
  19 import org.openhab.core.thing.Thing;
  20 import org.openhab.core.thing.ThingStatus;
  21 import org.openhab.core.thing.ThingStatusDetail;
  22 import org.openhab.core.types.Command;
  23
  24 /**
  25  * The {@link VelbusMemoHandler} is responsible for handling commands, which are
  26  * sent to one of the channels.
  27  *
  28  * @author Cedric Boon - Initial contribution
  29  */
  30 @NonNullByDefault
  31 public abstract class VelbusMemoHandler extends VelbusThermostatHandler {
  32     public static final int MEMO_TEXT_MAX_LENGTH = 63;
  33
  34     private final ChannelUID memoChannel = new ChannelUID(thing.getUID(), "oledDisplay", "MEMO");
  35
  36     public VelbusMemoHandler(Thing thing) {
  37         super(thing, 4, new ChannelUID(thing.getUID(), "input", "CH33"));
  38     }
  39
  40     @Override
  41     public void handleCommand(ChannelUID channelUID, Command command) {
  42         super.handleCommand(channelUID, command);
  43
  44         VelbusBridgeHandler velbusBridgeHandler = getVelbusBridgeHandler();
  45         if (velbusBridgeHandler == null) {
  46             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.BRIDGE_OFFLINE);
  47             return;
  48         }
  49
  50         if (channelUID.equals(memoChannel) && command instanceof StringType) {
  51             String memoText = ((StringType) command).toFullString();
  52             String trucatedMemoText = memoText.substring(0, Math.min(memoText.length(), MEMO_TEXT_MAX_LENGTH));
  53             String[] splittedMemoText = trucatedMemoText.split("(?<=\\G.....)");
  54
  55             for (int i = 0; i < splittedMemoText.length; i++) {
  56                 VelbusMemoTextPacket packet = new VelbusMemoTextPacket(getModuleAddress().getAddress(), (byte) (i * 5),
  57                         splittedMemoText[i].toCharArray());
  58
  59                 byte[] packetBytes = packet.getBytes();
  60                 velbusBridgeHandler.sendPacket(packetBytes);
  61
  62                 // The last character must be zero
  63                 if ((((i * 5) + 5) >= trucatedMemoText.length()) && (splittedMemoText[i].length() == 5)) {
  64                     packet = new VelbusMemoTextPacket(getModuleAddress().getAddress(), (byte) ((i + 1) * 5),
  65                             new char[0]);
  66
  67                     packetBytes = packet.getBytes();
  68                     velbusBridgeHandler.sendPacket(packetBytes);
  69                 }
  70             }
  71         }
  72     }
  73 }