/******************************************************************************
* Copyright (c) 2014 Oracle
* 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
*
* Contributors:
* Konstantin Komissarchik - initial implementation and ongoing maintenance
******************************************************************************/
package org.eclipse.sapphire.services.internal;
import java.util.SortedSet;
import org.eclipse.sapphire.LocalizableText;
import org.eclipse.sapphire.Text;
import org.eclipse.sapphire.ValueProperty;
import org.eclipse.sapphire.internal.ValueSnapshot;
import org.eclipse.sapphire.modeling.annotations.NumericRange;
import org.eclipse.sapphire.services.FactsService;
import org.eclipse.sapphire.services.ServiceCondition;
import org.eclipse.sapphire.services.ServiceContext;
/**
* Creates fact statements about numeric value property's range by using semantical information
* specified by @NumericRange annotation.
*
* @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a>
*/
public final class NumericRangeFactsService extends FactsService
{
@Text( "Minimum value is {0}" )
private static LocalizableText minValueStatement;
@Text( "Maximum value is {0}" )
private static LocalizableText maxValueStatement;
static
{
LocalizableText.init( NumericRangeFactsService.class );
}
@Override
protected void facts( final SortedSet<String> facts )
{
final ValueProperty property = context( ValueProperty.class );
final NumericRange range = property.getAnnotation( NumericRange.class );
final String min = range.min();
final String max = range.max();
if( min.length() > 0 )
{
facts.add( minValueStatement.format( new ValueSnapshot( property, min ) ) );
}
if( max.length() > 0 )
{
facts.add( maxValueStatement.format( new ValueSnapshot( property, max ) ) );
}
}
public static final class Condition extends ServiceCondition
{
@Override
public boolean applicable( final ServiceContext context )
{
final ValueProperty property = context.find( ValueProperty.class );
if( property != null )
{
final NumericRange range = property.getAnnotation( NumericRange.class );
return ( range != null && ( range.min().length() > 0 || range.max().length() > 0 ) );
}
return false;
}
}
}