/*******************************************************************************
* Copyright (c) 2015 Pivotal, Inc.
* 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:
* Pivotal, Inc. - initial API and implementation
*******************************************************************************/
package org.springframework.ide.eclipse.boot.properties.editor.util;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.springsource.ide.eclipse.commons.livexp.core.LiveExpression;
import org.springsource.ide.eclipse.commons.livexp.core.LiveVariable;
import org.springsource.ide.eclipse.commons.livexp.core.UIValueListener;
/**
* Wraps a Checkbox widget, attached to a LiveVariable so the widget selection
* state is mirrored in the LiveVariable and vice-versa.
*
* @author Kris De Volder
*/
public class CheckboxWidget {
public final Button widget;
public CheckboxWidget(Composite parent, final LiveVariable<Boolean> selected) {
widget = new Button(parent, SWT.CHECK);
selected.addListener(new UIValueListener<Boolean>() {
@Override
protected void uiGotValue(LiveExpression<Boolean> exp, Boolean ignore) {
//since uivalue listener may be called 'later' the value may have changed since
// the event. So get its current state.
Boolean value = selected.getValue();
if (value!=null) {
if (widget.isDisposed()) {
selected.removeListener(this);
} else {
widget.setSelection(value);
}
}
}
});
widget.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
selected.setValue(widget.getSelection());
}
});
}
public void setText(String string) {
widget.setText(string);
}
}