bundles/common/org.eclipse.apogy.common.topology.ui/src-gen-custom/org/eclipse/apogy/common/topology/ui/impl/NodePresentationCustomImpl.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, 
 *     Regent L'Archeveque,
 *     Sebastien Gemme  - initial API and implementation
 *     
 * SPDX-License-Identifier: EPL-1.0
 *     
 *******************************************************************************/
package org.eclipse.apogy.common.topology.ui.impl;

import java.lang.ref.WeakReference;

import org.eclipse.apogy.common.math.ApogyCommonMathFactory;
import org.eclipse.apogy.common.math.Tuple3d;
import org.eclipse.apogy.common.topology.ui.Activator;
import org.eclipse.apogy.common.topology.ui.ApogyCommonTopologyUIPackage;
import org.eclipse.apogy.common.topology.ui.NodePresentation;
import org.eclipse.apogy.common.topology.ui.SceneObject;
import org.eclipse.emf.common.notify.Adapter;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.impl.AdapterImpl;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;

public class NodePresentationCustomImpl extends NodePresentationImpl {

	private Adapter adapter;
	private final NodePresentationRef ref;

	protected NodePresentationCustomImpl() {
		super();
		this.eAdapters().add(getAdapter());

		// Register a listener to the preference store
		this.ref = new NodePresentationRef(this);
		Activator.getDefault().getPreferenceStore().addPropertyChangeListener(this.ref);
	}

	public Tuple3d basicGetCentroid() {
		Tuple3d tuple = ApogyCommonMathFactory.eINSTANCE.createTuple3d();
		tuple.setX(0.0);
		tuple.setY(0.0);
		tuple.setZ(0.0);

		return tuple;
	}

	public Tuple3d basicGetMin() {
		Tuple3d tuple = null;

		if (getSceneObject() != null && getSceneObject().getMin() != null) {
			tuple = ApogyCommonMathFactory.eINSTANCE.createTuple3d();

			javax.vecmath.Tuple3d min = getSceneObject().getMin();

			tuple.setX(min.x);
			tuple.setY(min.y);
			tuple.setZ(min.z);
		}

		return tuple;
	}

	public Tuple3d basicGetMax() {
		Tuple3d tuple = null;

		if (getSceneObject() != null && getSceneObject().getMax() != null) {
			tuple = ApogyCommonMathFactory.eINSTANCE.createTuple3d();
			javax.vecmath.Tuple3d max = getSceneObject().getMax();

			tuple.setX(max.x);
			tuple.setY(max.y);
			tuple.setZ(max.z);
		}

		return tuple;
	}

	public double getXRange() {
		double range = 0.0;
		if (getMin() != null && getMax() != null) {
			range = Math.abs(getMin().getX() - getMax().getX());
		}
		return range;
	}

	public double getYRange() {
		double range = 0.0;
		if (getMin() != null && getMax() != null) {
			range = Math.abs(getMin().getY() - getMax().getY());
		}
		return range;
	}

	public double getZRange() {
		double range = 0.0;
		if (getMin() != null && getMax() != null) {
			range = Math.abs(getMin().getZ() - getMax().getZ());
		}
		return range;
	}

	@Override
	public void setSceneObject(SceneObject newSceneObject) {

		// why are two NodePresentation created for each node ?

		boolean updateRequired = (newSceneObject != this.sceneObject);

		super.setSceneObject(newSceneObject);

		// Initialize the scene object just set if required.
		if (updateRequired) {
			initialSceneObject();
		}
	}

	protected void initialSceneObject() {
		// Applies the current values of the preferences.
		applyPreferences();

		this.sceneObject.setVisible(isVisible());
		this.sceneObject.setColor(getColor());
		this.sceneObject.setIDVisible(isIdVisible());
		this.sceneObject.setSelected(isSelected());
	}

	protected void applyPreferences() {
	}

	protected void updateSceneObject(Notification notification) {
		if (notification.getNotifier() instanceof NodePresentation) {
			int featureId = notification.getFeatureID(NodePresentation.class);

			switch (featureId) {
			case ApogyCommonTopologyUIPackage.NODE_PRESENTATION__COLOR:
				this.sceneObject.setColor(getColor());
				break;

			case ApogyCommonTopologyUIPackage.NODE_PRESENTATION__VISIBLE:
				this.sceneObject.setVisible(isVisible());
				break;

			case ApogyCommonTopologyUIPackage.NODE_PRESENTATION__SHADOW_MODE:
				this.sceneObject.setShadowMode(getShadowMode());
				break;

			case ApogyCommonTopologyUIPackage.NODE_PRESENTATION__ID_VISIBLE:
				this.sceneObject.setIDVisible(isIdVisible());
				break;

			case ApogyCommonTopologyUIPackage.NODE_PRESENTATION__SELECTED:
				this.sceneObject.setSelected(isSelected());
				break;

			default:
				break;
			}
		}
	}

	private Adapter getAdapter() {
		if (this.adapter == null) {
			this.adapter = new AdapterImpl() {
				@Override
				public void notifyChanged(Notification notification) {
					if (NodePresentationCustomImpl.this.sceneObject != null) {
						updateSceneObject(notification);
					}
				}
			};
		}
		return this.adapter;
	}

	/**
	 * This class has been created to solve a memory leak problem.
	 * 
	 * @author sgemme
	 * 
	 */
	private class NodePresentationRef extends WeakReference<NodePresentationCustomImpl>
			implements IPropertyChangeListener {

		public NodePresentationRef(NodePresentationCustomImpl nodePresentation) {
			super(nodePresentation);
		}

		@Override
		public void propertyChange(PropertyChangeEvent event) {
			if (get() != null) {
				get().applyPreferences();
			} else {
				Activator.getDefault().getPreferenceStore().removePropertyChangeListener(this);
			}
		}
	}

} // NodePresentationImpl