/*
* Copyright (c) 2006 Stiftung Deutsches Elektronen-Synchroton,
* Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY.
*
* THIS SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "../AS IS" BASIS.
* WITHOUT WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE AND
* NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
* FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. SHOULD THE SOFTWARE PROVE DEFECTIVE
* IN ANY RESPECT, THE USER ASSUMES THE COST OF ANY NECESSARY SERVICING, REPAIR OR
* CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE.
* NO USE OF ANY SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
* DESY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
* OR MODIFICATIONS.
* THE FULL LICENSE SPECIFYING FOR THE SOFTWARE THE REDISTRIBUTION, MODIFICATION,
* USAGE AND OTHER RIGHTS AND OBLIGATIONS IS INCLUDED WITH THE DISTRIBUTION OF THIS
* PROJECT IN THE FILE LICENSE.HTML. IF THE LICENSE IS NOT INCLUDED YOU MAY FIND A COPY
* AT HTTP://WWW.DESY.DE/LEGAL/LICENSE.HTM
*/
package org.csstudio.sds.internal.rules;
import org.csstudio.sds.model.IRule;
import org.csstudio.sds.util.ColorAndFontUtil;
/**
* Advanced fast color rule.
*
* @author Kai Meyer
* @version $Revision: 1.2 $
*
*/
public final class AdvancedColorRule implements IRule {
/**
* BLACK color.
*/
private static final String COLOR_BLACK = "#000000";
/**
* Standard constructor.
*/
public AdvancedColorRule() {
}
/**
* {@inheritDoc}
*/
@Override
public Object evaluate(final Object[] arguments) {
if ((arguments != null) && (arguments.length > 0) && (arguments.length < 5)) {
if (arguments[0] instanceof Number) {
String highColor =arguments.length>1 ? resolveColor(arguments[1]) : COLOR_BLACK;
String mediumColor = arguments.length>2 ? resolveColor(arguments[2]) : COLOR_BLACK;
String lowColor = arguments.length>3 ? resolveColor(arguments[3]) : COLOR_BLACK;
double d = ((Number) arguments[0]).doubleValue();
if (d > 66) {
return highColor;
}
if (d > 33) {
return mediumColor;
}
if (d > 0) {
return lowColor;
}
}
}
return COLOR_BLACK;
}
private String resolveColor(final Object arg) {
if ((arg!=null) && ColorAndFontUtil.isHex(arg.toString())) {
return arg.toString();
} else {
return COLOR_BLACK;
}
}
/**
* {@inheritDoc}
*/
@Override
public String getDescription() {
return "";
}
}