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/*
* Copyright (c) 2004 - 2011 Eike Stepper (Berlin, Germany) 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
*
* Contributors:
* Martin Fluegge - initial API and implementation
*
*/
package org.eclipse.emf.cdo.dawn.examples.acore.graphiti.features;
import org.eclipse.emf.cdo.dawn.examples.acore.AClass;
import org.eclipse.graphiti.features.IFeatureProvider;
import org.eclipse.graphiti.features.context.IDirectEditingContext;
import org.eclipse.graphiti.features.impl.AbstractDirectEditingFeature;
import org.eclipse.graphiti.mm.algorithms.GraphicsAlgorithm;
import org.eclipse.graphiti.mm.algorithms.Text;
import org.eclipse.graphiti.mm.pictograms.PictogramElement;
import org.eclipse.graphiti.mm.pictograms.Shape;
/**
* @author Martin Fluegge
*/
public class AcoreDirectEditAClassFeature extends AbstractDirectEditingFeature
{
public AcoreDirectEditAClassFeature(IFeatureProvider fp)
{
super(fp);
}
public int getEditingType()
{
// there are several possible editor-types supported:
// text-field, checkbox, color-chooser, combobox, ...
return TYPE_TEXT;
}
@Override
public boolean canDirectEdit(IDirectEditingContext context)
{
PictogramElement pe = context.getPictogramElement();
Object bo = getBusinessObjectForPictogramElement(pe);
GraphicsAlgorithm ga = context.getGraphicsAlgorithm();
// support direct editing, if it is a AClass, and the user clicked
// directly on the text and not somewhere else in the rectangle
if (bo instanceof AClass && ga instanceof Text)
{
return true;
}
// direct editing not supported in all other cases
return false;
}
public String getInitialValue(IDirectEditingContext context)
{
// return the current name of the AClass
PictogramElement pe = context.getPictogramElement();
AClass AClass = (AClass)getBusinessObjectForPictogramElement(pe);
return AClass.getName();
}
@Override
public String checkValueValid(String value, IDirectEditingContext context)
{
if (value.length() < 1)
{
return "Please enter any text as class name.";
}
if (value.contains(" "))
{
return "Spaces are not allowed in class names.";
}
if (value.contains("\n"))
{
return "Line breakes are not allowed in class names.";
}
// null means, that the value is valid
return null;
}
@Override
public void setValue(String value, IDirectEditingContext context)
{
// set the new name for the AClass
PictogramElement pe = context.getPictogramElement();
AClass AClass = (AClass)getBusinessObjectForPictogramElement(pe);
AClass.setName(value);
// Explicitly update the shape to display the new value in the diagram
// Note, that this might not be necessary in future versions of Graphiti
// (currently in discussion)
// we know, that pe is the Shape of the Text, so its container is the
// main shape of the AClass
updatePictogramElement(((Shape)pe).getContainer());
}
}
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