/*
* Licensed to "Neo Technology," Network Engine for Objects in Lund AB
* (http://neotechnology.com) under one or more contributor license agreements.
* See the NOTICE file distributed with this work for additional information
* regarding copyright ownership. Neo Technology licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of the License
* at (http://www.apache.org/licenses/LICENSE-2.0). Unless required by
* applicable law or agreed to in writing, software distributed under the
* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
* OF ANY KIND, either express or implied. See the License for the specific
* language governing permissions and limitations under the License.
*/
package org.neo4j.neoclipse.property;
import java.io.IOException;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.TextCellEditor;
import org.eclipse.swt.widgets.Composite;
import org.neo4j.neoclipse.property.PropertyTransform.PropertyHandler;
/**
* Editors used for property values.
*
* @author Anders Nawroth
*/
public enum PropertyEditor
{
NONE
{
@Override
CellEditor getEditor( final Composite parent,
final PropertyHandler propertyHandler )
{
return null;
}
},
TEXT
{
@Override
CellEditor getEditor( final Composite parent,
final PropertyHandler propertyHandler )
{
return new PropertyCellEditor( parent, propertyHandler );
}
};
/**
* Get actual editor for this property editor type.
*
* @param parent parent object
* @param propertyHandler
* @return cell editor for a property object
*/
abstract CellEditor getEditor( Composite parent,
PropertyHandler propertyHandler );
public static class PropertyCellEditor extends TextCellEditor
{
private final PropertyHandler propertyHandler;
private Object untouched = null;
public PropertyCellEditor( final Composite parent,
final PropertyHandler propertyHandler )
{
super( parent );
this.propertyHandler = propertyHandler;
}
@Override
protected Object doGetValue()
{
String value = text.getText();
if ( !propertyHandler.isType( String.class )
&& "".equals( ( value ).trim() ) )
{
return untouched;
}
try
{
return propertyHandler.parse( value );
}
catch ( IOException e )
{
e.printStackTrace();
}
return untouched;
}
@Override
protected void doSetValue( final Object value )
{
untouched = value;
super.doSetValue( propertyHandler.render( value ) );
}
@Override
protected boolean isCorrect( final Object value )
{
if ( value instanceof String
&& "".equals( ( (String) value ).trim() ) )
{
return true;
}
return super.isCorrect( value );
}
}
}