bundles/core/org.eclipse.apogy.core.environment.earth.atmosphere.ui/src/org/eclipse/apogy/core/environment/earth/atmosphere/ui/composites/EarthAtmosphereWorksiteOriginComposite.java

/*******************************************************************************
 * Copyright (c) 2018 Agence spatiale canadienne / Canadian Space Agency 
 * 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:
 *     Pierre Allard - initial API and implementation
 *
 * SPDX-License-Identifier: EPL-1.0
 *******************************************************************************/
package org.eclipse.apogy.core.environment.earth.atmosphere.ui.composites;

import org.eclipse.apogy.common.emf.transaction.ApogyCommonTransactionFacade;
import org.eclipse.apogy.core.environment.earth.ApogyEarthEnvironmentPackage;
import org.eclipse.apogy.core.environment.earth.atmosphere.EarthAtmosphereWorksite;
import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.UpdateValueStrategy;
import org.eclipse.core.databinding.conversion.Converter;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.emf.databinding.FeaturePath;
import org.eclipse.emf.databinding.edit.EMFEditProperties;
import org.eclipse.jface.databinding.swt.WidgetProperties;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;

public class EarthAtmosphereWorksiteOriginComposite extends Composite {
	private EarthAtmosphereWorksite earthSurfaceWorksite;

	private DataBindingContext m_bindingContext;

	private final Text txtLatitudevalue;
	private final Text txtLongitudevalue;
	private final Text txtAltitudevalue;

	public EarthAtmosphereWorksiteOriginComposite(Composite parent, int style) {
		super(parent, SWT.NO_BACKGROUND);
		setLayout(new GridLayout(3, false));

		Label lblLatitude = new Label(this, SWT.NONE);
		lblLatitude.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
		lblLatitude.setText("Latitude:");

		this.txtLatitudevalue = new Text(this, SWT.NONE);
		this.txtLatitudevalue.setText("0.0");
		GridData gd_txtLatitudevalue = new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1);
		gd_txtLatitudevalue.widthHint = 150;
		gd_txtLatitudevalue.minimumWidth = 150;
		this.txtLatitudevalue.setLayoutData(gd_txtLatitudevalue);
		this.txtLatitudevalue.setToolTipText(
				"Latitude of the origin of the worksite, in degrees.Latitude north of the equator are positive while those south of the equator are negative.");

		Label lblDegres = new Label(this, SWT.NONE);
		lblDegres.setText("degrees");

		Label lblLongitude = new Label(this, SWT.NONE);
		lblLongitude.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
		lblLongitude.setText("Longitude:");

		this.txtLongitudevalue = new Text(this, SWT.NONE);
		this.txtLongitudevalue.setText("0.0");
		GridData gd_txtLongitudevalue = new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1);
		gd_txtLongitudevalue.minimumWidth = 150;
		gd_txtLongitudevalue.widthHint = 150;
		this.txtLongitudevalue.setLayoutData(gd_txtLongitudevalue);
		this.txtLongitudevalue.setToolTipText(
				"Longitude of the origin of the worksite, in degrees. Longitude east of Greenwich, UK  are positive while those west of Greenwich are negative.");

		Label lblDegres_1 = new Label(this, SWT.NONE);
		lblDegres_1.setText("degrees");

		Label lblAltitude = new Label(this, SWT.NONE);
		lblAltitude.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
		lblAltitude.setText("Altitude:");

		this.txtAltitudevalue = new Text(this, SWT.NONE);
		this.txtAltitudevalue.setText("0.0");
		GridData gd_txtAltitudevalue = new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1);
		gd_txtAltitudevalue.widthHint = 150;
		gd_txtAltitudevalue.minimumWidth = 150;
		this.txtAltitudevalue.setLayoutData(gd_txtAltitudevalue);
		this.txtAltitudevalue.setToolTipText("Height above the Earth's sea level, in meters.");

		Label lblMeters = new Label(this, SWT.NONE);
		lblMeters.setText("meters");

		addDisposeListener(new DisposeListener() {
			@Override
			public void widgetDisposed(DisposeEvent e) {
				if (EarthAtmosphereWorksiteOriginComposite.this.m_bindingContext != null)
					EarthAtmosphereWorksiteOriginComposite.this.m_bindingContext.dispose();

			}
		});
	}

	public EarthAtmosphereWorksite getEarthAtmosphereWorksite() {
		return this.earthSurfaceWorksite;
	}

	public void setEarthAtmosphereWorksite(EarthAtmosphereWorksite earthSurfaceWorksite) {
		if (this.m_bindingContext != null)
			this.m_bindingContext.dispose();

		this.earthSurfaceWorksite = earthSurfaceWorksite;

		if (earthSurfaceWorksite != null) {
			this.m_bindingContext = initDataBindingsCustom();
		}
	}

	@SuppressWarnings("unchecked")
	private DataBindingContext initDataBindingsCustom() {
		DataBindingContext bindingContext = new DataBindingContext();

		/* Latitude Value. */
		IObservableValue<Double> observeLatitude = EMFEditProperties
				.value(ApogyCommonTransactionFacade.INSTANCE.getDefaultEditingDomain(),
						FeaturePath.fromList(
								ApogyEarthEnvironmentPackage.Literals.EARTH_WORKSITE__GEOGRAPHICAL_COORDINATES,
								ApogyEarthEnvironmentPackage.Literals.GEOGRAPHIC_COORDINATES__LATITUDE))
				.observe(getEarthAtmosphereWorksite());
		IObservableValue<String> observeLatitudeLabelValueText = WidgetProperties.text(SWT.Modify)
				.observe(this.txtLatitudevalue);

		bindingContext.bindValue(observeLatitudeLabelValueText, observeLatitude,
				new UpdateValueStrategy().setConverter(new Converter(String.class, Double.class) {
					@Override
					public Object convert(Object fromObject) {
						return Math.toRadians(Double.parseDouble((String) fromObject));
					}

				}), new UpdateValueStrategy().setConverter(new Converter(Double.class, String.class) {
					@Override
					public Object convert(Object fromObject) {
						Double degrees = Math.toDegrees((Double) fromObject);
						return degrees.toString();
					}

				}));

		/* Longitude Value. */
		IObservableValue<Double> observeLongitude = EMFEditProperties
				.value(ApogyCommonTransactionFacade.INSTANCE.getDefaultEditingDomain(),
						FeaturePath.fromList(
								ApogyEarthEnvironmentPackage.Literals.EARTH_WORKSITE__GEOGRAPHICAL_COORDINATES,
								ApogyEarthEnvironmentPackage.Literals.GEOGRAPHIC_COORDINATES__LONGITUDE))
				.observe(getEarthAtmosphereWorksite());
		IObservableValue<String> observeLongitudeLabelValueText = WidgetProperties.text(SWT.Modify)
				.observe(this.txtLongitudevalue);

		bindingContext.bindValue(observeLongitudeLabelValueText, observeLongitude,
				new UpdateValueStrategy().setConverter(new Converter(String.class, Double.class) {
					@Override
					public Object convert(Object fromObject) {
						return Math.toRadians(Double.parseDouble((String) fromObject));
					}

				}), new UpdateValueStrategy().setConverter(new Converter(Double.class, String.class) {
					@Override
					public Object convert(Object fromObject) {
						Double degrees = Math.toDegrees((Double) fromObject);
						return degrees.toString();
					}

				}));

		/* Altitude Value. */
		IObservableValue<Double> observeAltitude = EMFEditProperties
				.value(ApogyCommonTransactionFacade.INSTANCE.getDefaultEditingDomain(),
						FeaturePath.fromList(
								ApogyEarthEnvironmentPackage.Literals.EARTH_WORKSITE__GEOGRAPHICAL_COORDINATES,
								ApogyEarthEnvironmentPackage.Literals.GEOGRAPHIC_COORDINATES__ELEVATION))
				.observe(getEarthAtmosphereWorksite());
		IObservableValue<String> observeAltitudeLabelValueText = WidgetProperties.text(SWT.Modify)
				.observe(this.txtAltitudevalue);

		bindingContext.bindValue(observeAltitudeLabelValueText, observeAltitude,
				new UpdateValueStrategy().setConverter(new Converter(String.class, Double.class) {
					@Override
					public Object convert(Object fromObject) {
						return Double.parseDouble((String) fromObject);
					}

				}), new UpdateValueStrategy().setConverter(new Converter(Double.class, String.class) {
					@Override
					public Object convert(Object fromObject) {
						return ((Double) fromObject).toString();
					}
				}));

		return bindingContext;
	}
}