bundles/common/org.eclipse.apogy.common.topology.ui/src/org/eclipse/apogy/common/topology/ui/composites/AttachedViewPointComposite.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
 *     Regent L'Archeveque,
 *     Sebastien Gemme
 * 
 * SPDX-License-Identifier: EPL-1.0
 *******************************************************************************/
package org.eclipse.apogy.common.topology.ui.composites;

import org.eclipse.apogy.common.emf.transaction.ApogyCommonTransactionFacade;
import org.eclipse.apogy.common.topology.ApogyCommonTopologyPackage;
import org.eclipse.apogy.common.topology.AttachedViewPoint;
import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.UpdateValueStrategy;
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.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;

public class AttachedViewPointComposite extends Composite {
	private AttachedViewPoint attachedViewPoint;

	private final AbstractViewPointComposite abstractViewPointComposite;

	private final Button enableRotationButton;
	private final Button enableTranslationButton;

	private DataBindingContext m_bindingContext;

	public AttachedViewPointComposite(Composite parent, int style) {
		super(parent, style);
		setLayout(new GridLayout(1, false));

		this.abstractViewPointComposite = new AbstractViewPointComposite(this, SWT.None, null);
		this.abstractViewPointComposite.setLayoutData(new GridData(SWT.LEFT, SWT.FILL, false, false, 1, 1));

		Composite bottom = new Composite(this, SWT.BORDER);
		bottom.setLayoutData(new GridData(SWT.LEFT, SWT.FILL, false, false, 1, 1));
		bottom.setLayout(new GridLayout(4, false));

		// Rotation Enable.
		Label lblEnableRotationLabel = new Label(bottom, SWT.NONE);
		lblEnableRotationLabel.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
		lblEnableRotationLabel.setText("Enable Rotation:");

		this.enableRotationButton = new Button(bottom, SWT.CHECK);

		// Translation Enable.
		Label lblEnableTranslationLabel = new Label(bottom, SWT.NONE);
		lblEnableTranslationLabel.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
		lblEnableTranslationLabel.setText("Enable Translation:");

		this.enableTranslationButton = new Button(bottom, SWT.CHECK);

		// Adds dispose cleanup.
		this.addDisposeListener(new DisposeListener() {
			@Override
			public void widgetDisposed(DisposeEvent e) {
				if (AttachedViewPointComposite.this.m_bindingContext != null)
					AttachedViewPointComposite.this.m_bindingContext.dispose();
			}
		});
	}

	public AttachedViewPoint getAttachedViewPoint() {
		return this.attachedViewPoint;
	}

	public void setAttachedViewPoint(AttachedViewPoint attachedViewPoint) {
		if (this.m_bindingContext != null)
			this.m_bindingContext.dispose();

		this.attachedViewPoint = attachedViewPoint;

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

	}

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

		/* Enable Rotation. */
		IObservableValue<Double> observeAllowRotation = EMFEditProperties
				.value(ApogyCommonTransactionFacade.INSTANCE.getTransactionalEditingDomain(this.attachedViewPoint),
						FeaturePath.fromList(ApogyCommonTopologyPackage.Literals.ATTACHED_VIEW_POINT__ALLOW_ROTATION))
				.observe(this.attachedViewPoint);

		IObservableValue<String> observeEnableRotationButton = WidgetProperties.selection()
				.observe(this.enableRotationButton);

		bindingContext.bindValue(observeEnableRotationButton, observeAllowRotation, new UpdateValueStrategy(),
				new UpdateValueStrategy());

		/* Enable Translation. */
		IObservableValue<Double> observeAllowTranslation = EMFEditProperties
				.value(ApogyCommonTransactionFacade.INSTANCE.getTransactionalEditingDomain(this.attachedViewPoint),
						FeaturePath
								.fromList(ApogyCommonTopologyPackage.Literals.ATTACHED_VIEW_POINT__ALLOW_TRANSLATION))
				.observe(this.attachedViewPoint);

		IObservableValue<String> observeEnableTranslationButton = WidgetProperties.selection()
				.observe(this.enableTranslationButton);

		bindingContext.bindValue(observeEnableTranslationButton, observeAllowTranslation, new UpdateValueStrategy(),
				new UpdateValueStrategy());

		return bindingContext;
	}

}