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/*****************************************************************************
* Copyright (c) 2010, 2016 CEA LIST, Esterel Technologies SAS and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
* Thibault Le Ouay t.leouay@sherpa-eng.com - Add binding implementation
* Sebastien Gabel (Esterel Technologies SAS) - Bug 497361
*
*****************************************************************************/
package org.eclipse.papyrus.infra.widgets.editors;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.core.databinding.observable.value.SelectObservableValue;
import org.eclipse.jface.databinding.swt.typed.WidgetProperties;
import org.eclipse.jface.fieldassist.ControlDecoration;
import org.eclipse.jface.fieldassist.FieldDecorationRegistry;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
/**
* A Property Editor representing a Boolean value
* as a Radio, with two options (true/false).
*
* @author Camille Letavernier
*
*/
public class BooleanRadio extends AbstractValueEditor {
/**
* The "true" radio button
*/
protected Button trueRadio;
/**
* The "false" radio button
*/
protected Button falseRadio;
private ControlDecoration controlDecoration;
/**
*
* Constructor. Creates a new Property Editor for a Boolean
* value, represented by two radio buttons.
*
* @param parent
* This editor's parent composite
* @param style
* The style applied to this editor's radio buttons
*/
public BooleanRadio(Composite parent, int style) {
this(parent, style, null);
}
/**
*
* Constructor. Creates a new Property Editor for a Boolean
* value, represented by two radio buttons.
*
* @param parent
* This editor's parent composite
* @param style
* The style applied to this editor's radio buttons
* @param label
* The label for this editor
*/
public BooleanRadio(Composite parent, int style, String label) {
super(parent, label);
((GridLayout) getLayout()).numColumns = 3;
trueRadio = factory.createButton(this, "true", style | SWT.RADIO); //$NON-NLS-1$
trueRadio.setBackground(this.getBackground()); // For Radio buttons, we need to force the color
falseRadio = factory.createButton(this, "false", style | SWT.RADIO); //$NON-NLS-1$
falseRadio.setBackground(this.getBackground()); // For Radio buttons, we need to force the color
setWidgetObservable(getObservable(), true);
controlDecoration = new ControlDecoration(trueRadio, SWT.TOP | SWT.LEFT);
// Use a dedicated grid data for each radio, otherwise one of the two labels may be truncated.
GridData trueGd = new GridData();
trueGd.horizontalIndent = FieldDecorationRegistry.getDefault().getMaximumDecorationWidth();
trueRadio.setLayoutData(trueGd);
GridData falseGd = new GridData();
falseGd.horizontalIndent = FieldDecorationRegistry.getDefault().getMaximumDecorationWidth();
falseRadio.setLayoutData(falseGd);
}
/**
* Defines a single observable value, encapsulating the ones
* from each radio button (true / false)
*
* @return The encapsulating observable value
*/
private IObservableValue getObservable() {
IObservableValue trueObservable = WidgetProperties.widgetSelection().observe(trueRadio);
IObservableValue falseObservable = WidgetProperties.widgetSelection().observe(falseRadio);
SelectObservableValue observable = new SelectObservableValue();
observable.addOption(true, trueObservable);
observable.addOption(false, falseObservable);
return observable;
}
/**
* {@inheritDoc}
*/
@Override
public Object getEditableType() {
return Boolean.class;
}
/**
* {@inheritDoc}
*/
@Override
public Boolean getValue() {
return trueRadio.getSelection();
}
@Override
public void setReadOnly(boolean readOnly) {
trueRadio.setEnabled(!readOnly);
falseRadio.setEnabled(!readOnly);
}
@Override
public boolean isReadOnly() {
return !trueRadio.isEnabled() || !falseRadio.isEnabled();
}
@Override
public void setToolTipText(String text) {
trueRadio.setToolTipText(text);
falseRadio.setToolTipText(text);
super.setLabelToolTipText(text);
}
public void setTrueLabel(String label) {
trueRadio.setText(label);
}
public String getTrueLabel() {
return trueRadio.getText();
}
public void setFalseLabel(String label) {
falseRadio.setText(label);
}
public String getFalseLabel() {
return falseRadio.getText();
}
}
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