gov.redhawk.sca.waveform.controlpanel.propertyEditors.BooleanPropertyEditor.java Source code

Introduction

Here is the source code for gov.redhawk.sca.waveform.controlpanel.propertyEditors.BooleanPropertyEditor.java

Source

/**
 * This file is protected by Copyright. 
 * Please refer to the COPYRIGHT file distributed with this source distribution.
 * 
 * This file is part of REDHAWK IDE.
 * 
 * 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.
 *
 */

package gov.redhawk.sca.waveform.controlpanel.propertyEditors;

import gov.redhawk.model.sca.ScaAbstractProperty;
import gov.redhawk.model.sca.ScaPackage;
import gov.redhawk.model.sca.ScaSimpleProperty;

import org.eclipse.core.databinding.UpdateValueStrategy;
import org.eclipse.emf.databinding.EMFDataBindingContext;
import org.eclipse.emf.databinding.EMFObservables;
import org.eclipse.jface.databinding.swt.ISWTObservableValue;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.jface.databinding.swt.WidgetProperties;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;

public class BooleanPropertyEditor extends PropertyEditor {

    private final boolean value;
    private final String name;
    private final ScaAbstractProperty<?> prop;
    private Button t;
    private Button f;
    private Group radioGroup;
    private EMFDataBindingContext context;

    private class BooleanUpdateStrategy extends UpdateValueStrategy {
        @Override
        public Object convert(final Object value) {
            final Boolean selected = (Boolean) value;
            BooleanPropertyEditor.this.f.setSelection(!selected);
            return super.convert(value);
        }
    }

    BooleanPropertyEditor(final String name, final Boolean value, final ScaAbstractProperty<?> prop) {
        this.value = value;
        this.name = name;
        this.prop = prop;
    }

    @Override
    public void renderNameValuePair(final Composite parent) {
        final Label label = new Label(parent, SWT.NONE);
        label.setText(this.name);
        this.radioGroup = new Group(parent, SWT.NONE);
        this.radioGroup.setLayout(new FillLayout());
        this.t = new Button(this.radioGroup, SWT.RADIO);
        this.t.setText("True");
        this.t.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetDefaultSelected(final SelectionEvent e) {
                BooleanPropertyEditor.this.f.setSelection(!BooleanPropertyEditor.this.t.getSelection());
            }
        });
        this.f = new Button(this.radioGroup, SWT.RADIO);
        this.f.setText("False");
        if (this.value) {
            this.t.setSelection(true);
        } else {
            this.f.setSelection(true);
        }
        GridDataFactory.fillDefaults().grab(false, false).applyTo(label);
        GridDataFactory.fillDefaults().grab(true, false).applyTo(this.radioGroup);
    }

    @Override
    public void setupBindings() {
        this.context = new EMFDataBindingContext();
        final ScaSimplePropertyControl scaSimplePropertyControl = new ScaSimplePropertyControl(this.radioGroup,
                (ScaSimpleProperty) this.prop);
        final ISWTObservableValue trueObservable = WidgetProperties.selection().observe(this.t);
        this.context.bindValue(trueObservable, scaSimplePropertyControl.getModel());
        this.context.bindValue(SWTObservables.observeSelection(this.t),
                scaSimplePropertyControl.getEditingObserable());
        this.context.bindValue(scaSimplePropertyControl.getTarget(),
                EMFObservables.observeValue(this.prop, ScaPackage.Literals.SCA_SIMPLE_PROPERTY__VALUE), null,
                new BooleanUpdateStrategy());
    }

    @Override
    public void dispose() {
        this.context.dispose();
    }

}