/**
* Copyright (c) 2010-2014, openHAB.org and others.
*
* 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.core.library.items;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.ArrayList;
import java.util.List;
import org.openhab.core.library.types.DecimalType;
import org.openhab.core.library.types.HSBType;
import org.openhab.core.library.types.IncreaseDecreaseType;
import org.openhab.core.library.types.OnOffType;
import org.openhab.core.library.types.PercentType;
import org.openhab.core.types.Command;
import org.openhab.core.types.State;
import org.openhab.core.types.UnDefType;
/**
* A ColorItem can be used for color values, e.g. for LED lights
*
* @author Kai Kreuzer
* @since 1.2.0
*
*/public class ColorItem extends DimmerItem {
private static List<Class<? extends State>> acceptedDataTypes = new ArrayList<Class<? extends State>>();
private static List<Class<? extends Command>> acceptedCommandTypes = new ArrayList<Class<? extends Command>>();
static {
acceptedDataTypes.add(OnOffType.class);
acceptedDataTypes.add(PercentType.class);
acceptedDataTypes.add(HSBType.class);
acceptedDataTypes.add(UnDefType.class);
acceptedCommandTypes.add(OnOffType.class);
acceptedCommandTypes.add(IncreaseDecreaseType.class);
acceptedCommandTypes.add(PercentType.class);
acceptedCommandTypes.add(HSBType.class);
}
public ColorItem(String name) {
super(name);
}
public void send(HSBType command) {
internalSend(command);
}
public List<Class<? extends State>> getAcceptedDataTypes() {
return acceptedDataTypes;
}
public List<Class<? extends Command>> getAcceptedCommandTypes() {
return acceptedCommandTypes;
}
/**
* {@inheritDoc}
*/
@Override
public void setState(State state) {
State currentState = this.state;
if(currentState instanceof HSBType) {
DecimalType hue = ((HSBType) currentState).getHue();
PercentType saturation = ((HSBType) currentState).getSaturation();
// we map ON/OFF values to dark/bright, so that the hue and saturation values are not changed
if(state==OnOffType.OFF) {
super.setState(new HSBType(hue, saturation, PercentType.ZERO));
} else if(state==OnOffType.ON) {
super.setState(new HSBType(hue, saturation, PercentType.HUNDRED));
} else if(state instanceof PercentType && !(state instanceof HSBType)) {
super.setState(new HSBType(hue, saturation, (PercentType) state));
} else {
super.setState(state);
}
} else {
// we map ON/OFF values to black/white and percentage values to grey scale
if(state==OnOffType.OFF) {
super.setState(HSBType.BLACK);
} else if(state==OnOffType.ON) {
super.setState(HSBType.WHITE);
} else if(state instanceof PercentType && !(state instanceof HSBType)) {
super.setState(new HSBType(DecimalType.ZERO, PercentType.ZERO, (PercentType) state));
} else {
super.setState(state);
}
}
}
/**
* {@inheritDoc}
*/
@Override
public State getStateAs(Class<? extends State> typeClass) {
if(typeClass==HSBType.class) {
return this.state;
} else if(typeClass==OnOffType.class) {
if(state instanceof HSBType) {
HSBType hsbState = (HSBType) state;
// if brightness is not completely off, we consider the state to be on
return hsbState.getBrightness().equals(PercentType.ZERO) ? OnOffType.OFF : OnOffType.ON;
}
} else if(typeClass==DecimalType.class) {
if(state instanceof HSBType) {
HSBType hsbState = (HSBType) state;
return new DecimalType(hsbState.getBrightness().toBigDecimal().divide(new BigDecimal(100), 8, RoundingMode.UP));
}
}
return super.getStateAs(typeClass);
}
}