SwegonVentilationGenericBindingProvider.java

/**
 * Copyright (c) 2010-2016 by the respective copyright holders.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package org.openhab.binding.swegonventilation.internal;

import java.io.InvalidClassException;

import org.openhab.binding.swegonventilation.SwegonVentilationBindingProvider;
import org.openhab.core.binding.BindingConfig;
import org.openhab.core.items.Item;
import org.openhab.core.library.items.NumberItem;
import org.openhab.core.library.items.SwitchItem;
import org.openhab.model.item.binding.AbstractGenericBindingProvider;
import org.openhab.model.item.binding.BindingConfigParseException;

/**
 * <p>
 * This class can parse information from the generic binding format and provides
 * Swegon ventilation binding information from it.
 *
 * <p>
 * Examples for valid binding configuration strings:
 *
 * <ul>
 * <li><code>swegonventilation="OutdoorTemperature"</code></li>
 * <li><code>swegonventilation="T2"</code></li>
 * <li><code>swegonventilation="SupplyAirFanSpeed"</code></li>
 * </ul>
 *
 * @author Pauli Anttila
 * @since 1.4.0
 */
public class SwegonVentilationGenericBindingProvider extends AbstractGenericBindingProvider
        implements SwegonVentilationBindingProvider {

    /**
     * {@inheritDoc}
     */
    @Override
    public String getBindingType() {
        return "swegonventilation";
    }

    /**
     * @{inheritDoc
     */
    @Override
    public void validateItemType(Item item, String bindingConfig) throws BindingConfigParseException {
        if (!(item instanceof NumberItem || item instanceof SwitchItem)) {
            throw new BindingConfigParseException("item '" + item.getName() + "' is of type '"
                    + item.getClass().getSimpleName()
                    + "', only NumberItems or SwitchItems are allowed - please check your *.items configuration");
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void processBindingConfiguration(String context, Item item, String bindingConfig)
            throws BindingConfigParseException {
        super.processBindingConfiguration(context, item, bindingConfig);

        SwegonVentilationBindingConfig config = new SwegonVentilationBindingConfig();

        config.itemType = item.getClass();
        String commandType = bindingConfig.trim();

        try {
            SwegonVentilationCommandType.validateBinding(commandType, config.itemType);
            config.commandType = SwegonVentilationCommandType.getCommandType(commandType);
        } catch (IllegalArgumentException e) {
            throw new BindingConfigParseException("'" + commandType + "' is not a valid command type");
        } catch (InvalidClassException e) {
            throw new BindingConfigParseException("Not valid class for command type '" + commandType + "'");
        }

        addBindingConfig(item, config);
    }

    class SwegonVentilationBindingConfig implements BindingConfig {
        public Class<? extends Item> itemType = null;
        public SwegonVentilationCommandType commandType;

        @Override
        public String toString() {
            return "SwegonVentilationBindingConfig [" + ", itemType=" + itemType + ", commandType=" + commandType + "]";
        }

    }

    /**
     * @{inheritDoc
     */
    @Override
    public Class<? extends Item> getItemType(String itemName) {
        SwegonVentilationBindingConfig config = (SwegonVentilationBindingConfig) bindingConfigs.get(itemName);
        return config != null ? config.itemType : null;
    }

    @Override
    public SwegonVentilationCommandType getCommandType(String itemName) {
        SwegonVentilationBindingConfig config = (SwegonVentilationBindingConfig) bindingConfigs.get(itemName);
        return config != null ? config.commandType : null;
    }

}