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/**
* Copyright (c) 2012 Mia-Software.
*
* 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:
* Alban Ménager (Soft-Maint) - Bug 387470 - [EFacet][Custom] Editors
* Grégoire Dupé (Mia-Software) - Bug 387470 - [EFacet][Custom] Editors
*/
package org.eclipse.papyrus.emf.facet.query.ocl.sdk.ui.internal.widget.oclexpression;
import org.eclipse.emf.ecore.EClassifier;
import org.eclipse.papyrus.emf.facet.query.ocl.core.util.OclQueryUtil;
import org.eclipse.papyrus.emf.facet.query.ocl.sdk.ui.internal.Messages;
import org.eclipse.papyrus.emf.facet.query.ocl.sdk.ui.widget.oclexpression.IOCLExpressionWidget;
import org.eclipse.papyrus.emf.facet.util.ui.internal.exported.util.widget.AbstractWidget;
import org.eclipse.papyrus.emf.facet.util.ui.utils.PropertyElement;
import org.eclipse.ocl.ParserException;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Text;
/**
* Simple widget for the edition of a complexe OCl expression.
*/
public class OclExpressionWidgetSimple extends AbstractWidget implements
IOCLExpressionWidget {
private static final String UNREC_VAR = "Unrecognized variable"; //$NON-NLS-1$
private static final int TEXT_HEIGHT = 100;
private final EClassifier context;
private final String expression;
private Text text;
private final PropertyElement oclExpressionProp;
public OclExpressionWidgetSimple(final Composite parent,
final EClassifier context, final String expression,
final PropertyElement oclExpressionProp) {
super(parent);
this.context = context;
this.expression = expression;
this.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
this.oclExpressionProp = oclExpressionProp;
}
@Override
protected void addSubWidgets() {
this.text = new Text(this, SWT.MULTI | SWT.V_SCROLL);
final GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
gridData.heightHint = TEXT_HEIGHT;
this.text.setLayoutData(gridData);
if (this.expression != null) {
this.text.setText(this.expression);
}
}
@Override
public String getError() {
String result = null;
final String textExpression = this.text.getText().trim();
if ("".equals(textExpression)) { //$NON-NLS-1$
result = Messages.OclExpression_Error;
} else {
try {
OclQueryUtil.createOCLExpression(this.context, textExpression);
this.oclExpressionProp.setValue(textExpression);
} catch (final ParserException exception) {
if (exception.getMessage().contains(UNREC_VAR)) {
this.oclExpressionProp.setValue(textExpression);
} else {
result = Messages.OclExpression_Error
+ " :\n - " + exception.getMessage(); //$NON-NLS-1$
}
}
}
return result;
}
@Override
public void notifyChanged() {
// Nothing to do.
}
public void setExpression(final String expression) {
this.text.setText(expression);
}
}
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