bundles/core/org.eclipse.apogy.core.environment.surface.ui/src/org/eclipse/apogy/core/environment/surface/ui/wizards/CartesianTriangularMeshSlopeImageMapLayerWizardPage.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 - initial API and implementation
 *
 * SPDX-License-Identifier: EPL-1.0
 *     
 *******************************************************************************/
package org.eclipse.apogy.core.environment.surface.ui.wizards;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.apogy.common.emf.transaction.ApogyCommonTransactionFacade;
import org.eclipse.apogy.core.environment.surface.AbstractMapLayer;
import org.eclipse.apogy.core.environment.surface.ApogySurfaceEnvironmentPackage;
import org.eclipse.apogy.core.environment.surface.CartesianTriangularMeshMapLayer;
import org.eclipse.apogy.core.environment.surface.CartesianTriangularMeshSlopeImageMapLayer;
import org.eclipse.apogy.core.environment.surface.Map;
import org.eclipse.apogy.core.environment.surface.ui.ImageMapLayerUISettings;
import org.eclipse.apogy.core.environment.surface.ui.composites.ImageMapLayerPreviewComposite;
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.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.KeyListener;
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.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;

public class CartesianTriangularMeshSlopeImageMapLayerWizardPage extends WizardPage {
	private final static String WIZARD_PAGE_ID = "org.eclipse.apogy.core.environment.surface.ui.wizards.CartesianTriangularMeshSlopeImageMapLayerWizardPage";

	private final CartesianTriangularMeshSlopeImageMapLayer cartesianTriangularMeshSlopeImageMapLayer;
	@SuppressWarnings("unused")
	private final ImageMapLayerUISettings uiSettings;

	private Button btnAutoScale;
	private Text txtMinimumSlope;
	private Text txtMaximumSlope;

	private ImageMapLayerPreviewComposite imagePreviewComposite;

	private DataBindingContext m_bindingContext;

	public CartesianTriangularMeshSlopeImageMapLayerWizardPage(
			CartesianTriangularMeshSlopeImageMapLayer cartesianTriangularMeshSlopeImageMapLayer,
			ImageMapLayerUISettings uiSettings) {
		super(WIZARD_PAGE_ID);

		this.cartesianTriangularMeshSlopeImageMapLayer = cartesianTriangularMeshSlopeImageMapLayer;
		this.uiSettings = uiSettings;

		setTitle("Mesh Slope Image Layer");
		setDescription("Configure the slope image generation settings.");

		validate();
	}

	@Override
	public void createControl(Composite parent) {
		Composite container = new Composite(parent, SWT.None);
		container.setLayout(new GridLayout(2, false));

		Label lblMinimumSlope = new Label(container, SWT.NONE);
		lblMinimumSlope.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
		lblMinimumSlope.setText("Minimum Slope (deg):");

		this.txtMinimumSlope = new Text(container, SWT.BORDER);
		GridData gd_txtMinimumSlope = new GridData(SWT.LEFT, SWT.CENTER, true, false, 1, 1);
		gd_txtMinimumSlope.minimumWidth = 100;
		gd_txtMinimumSlope.widthHint = 100;
		this.txtMinimumSlope.setLayoutData(gd_txtMinimumSlope);
		this.txtMinimumSlope.setToolTipText(
				"The minimum slope to use to generate the color scale. This is applicable only if Auto Scale is disabled.");
		this.txtMinimumSlope.addKeyListener(new KeyListener() {

			@Override
			public void keyReleased(KeyEvent e) {
				validate();
			}

			@Override
			public void keyPressed(KeyEvent e) {
				validate();
			}
		});

		Label lblMaximumSlope = new Label(container, SWT.NONE);
		lblMaximumSlope.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
		lblMaximumSlope.setText("Minimum Slope (deg):");

		this.txtMaximumSlope = new Text(container, SWT.BORDER);
		GridData gd_txtMaximumSlope = new GridData(SWT.LEFT, SWT.CENTER, false, false, 1, 1);
		gd_txtMaximumSlope.minimumWidth = 100;
		gd_txtMaximumSlope.widthHint = 100;
		this.txtMaximumSlope.setLayoutData(gd_txtMaximumSlope);
		this.txtMaximumSlope.setToolTipText(
				"The maximum slope to use to generate the color scale. This is applicable only if Auto Scale is disabled.");
		this.txtMaximumSlope.addKeyListener(new KeyListener() {

			@Override
			public void keyReleased(KeyEvent e) {
				validate();
			}

			@Override
			public void keyPressed(KeyEvent e) {
				validate();
			}
		});

		Label lblAutoScale = new Label(container, SWT.NONE);
		lblAutoScale.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
		lblAutoScale.setText("Auto Scale:");

		this.btnAutoScale = new Button(container, SWT.CHECK);
		this.btnAutoScale.setAlignment(SWT.RIGHT);
		this.btnAutoScale.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, false, 1, 1));
		this.btnAutoScale.setText("");
		this.btnAutoScale.setToolTipText("Whether or not to use autoscalling to generate the color scale.");

		Group imageGroup = new Group(container, SWT.BORDER);
		imageGroup.setLayout(new GridLayout(1, false));
		imageGroup.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, false, 2, 1));
		imageGroup.setText("Derived Image");

		this.imagePreviewComposite = new ImageMapLayerPreviewComposite(imageGroup, SWT.NONE,
				this.cartesianTriangularMeshSlopeImageMapLayer);
		GridData gd_imagePreviewComposite = new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1);
		gd_imagePreviewComposite.widthHint = 350;
		gd_imagePreviewComposite.heightHint = 450;
		gd_imagePreviewComposite.minimumHeight = 350;
		gd_imagePreviewComposite.minimumWidth = 450;
		this.imagePreviewComposite.setLayoutData(gd_imagePreviewComposite);
		this.imagePreviewComposite.setImageMapLayer(this.cartesianTriangularMeshSlopeImageMapLayer);

		setControl(container);
		new Label(container, SWT.NONE);
		new Label(container, SWT.NONE);

		// Bindings
		this.m_bindingContext = initDataBindingsCustom();

		validate();

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

			}
		});
	}

	protected void validate() {
		setErrorMessage(null);

		if (this.cartesianTriangularMeshSlopeImageMapLayer.getMinimumSlope() < 0) {
			setErrorMessage(
					"Minimum slope specified <" + this.cartesianTriangularMeshSlopeImageMapLayer.getMinimumSlope()
							+ "> must be equal or greater than zero!");
		}

		if (this.cartesianTriangularMeshSlopeImageMapLayer.getMaximumSlope() < 0) {
			setErrorMessage(
					"Maximum slope specified <" + this.cartesianTriangularMeshSlopeImageMapLayer.getMaximumSlope()
							+ "> must be equal or greater than zero!");
		}

		if (this.cartesianTriangularMeshSlopeImageMapLayer
				.getMinimumSlope() >= this.cartesianTriangularMeshSlopeImageMapLayer.getMaximumSlope()) {
			setErrorMessage("Maximum slope must be greater than the minimum slope !");
		}

		setPageComplete(getErrorMessage() == null);
	}

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

		/* Minimum Slope Value. */
		IObservableValue<Double> observeMinimumSlope = EMFEditProperties.value(
				ApogyCommonTransactionFacade.INSTANCE
						.getTransactionalEditingDomain(this.cartesianTriangularMeshSlopeImageMapLayer),
				FeaturePath.fromList(
						ApogySurfaceEnvironmentPackage.Literals.CARTESIAN_TRIANGULAR_MESH_SLOPE_IMAGE_MAP_LAYER__MINIMUM_SLOPE))
				.observe(this.cartesianTriangularMeshSlopeImageMapLayer);
		IObservableValue<String> observeMinimumSlopeText = WidgetProperties.text(SWT.Modify)
				.observe(this.txtMinimumSlope);

		bindingContext.bindValue(observeMinimumSlopeText, observeMinimumSlope,
				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();
					}

				}));

		/* Maximum Slope Value. */
		IObservableValue<Double> observeMaximumSlope = EMFEditProperties.value(
				ApogyCommonTransactionFacade.INSTANCE
						.getTransactionalEditingDomain(this.cartesianTriangularMeshSlopeImageMapLayer),
				FeaturePath.fromList(
						ApogySurfaceEnvironmentPackage.Literals.CARTESIAN_TRIANGULAR_MESH_SLOPE_IMAGE_MAP_LAYER__MAXIMUM_SLOPE))
				.observe(this.cartesianTriangularMeshSlopeImageMapLayer);
		IObservableValue<String> observeMaximumSlopeText = WidgetProperties.text(SWT.Modify)
				.observe(this.txtMaximumSlope);

		bindingContext.bindValue(observeMaximumSlopeText, observeMaximumSlope,
				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();
					}

				}));

		/* Autoscale. */
		IObservableValue<Double> observeAutoscale = EMFEditProperties.value(
				ApogyCommonTransactionFacade.INSTANCE
						.getTransactionalEditingDomain(this.cartesianTriangularMeshSlopeImageMapLayer),
				FeaturePath.fromList(
						ApogySurfaceEnvironmentPackage.Literals.CARTESIAN_TRIANGULAR_MESH_SLOPE_IMAGE_MAP_LAYER__AUTO_SCALE))
				.observe(this.cartesianTriangularMeshSlopeImageMapLayer);
		IObservableValue<String> observeAutoscaleButtton = WidgetProperties.selection().observe(this.btnAutoScale);

		bindingContext.bindValue(observeAutoscaleButtton, observeAutoscale, new UpdateValueStrategy(),
				new UpdateValueStrategy());

		return bindingContext;
	}

	public class CompositeFilterContentProvider implements ITreeContentProvider {
		@Override
		public void dispose() {
		}

		@Override
		public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
		}

		@Override
		public Object[] getElements(Object inputElement) {
			if (inputElement instanceof Map) {
				Map map = (Map) inputElement;

				// Keeps only ImageMapLayer.
				return filterMap(map).toArray();
			}

			return null;
		}

		@Override
		public Object[] getChildren(Object parentElement) {
			if (parentElement instanceof Map) {
				Map map = (Map) parentElement;

				// Keeps only ImageMapLayer.
				return filterMap(map).toArray();
			}

			return null;
		}

		@Override
		public Object getParent(Object element) {
			return null;
		}

		@Override
		public boolean hasChildren(Object element) {
			if (element instanceof Map) {
				Map map = (Map) element;
				return !filterMap(map).isEmpty();
			} else {
				return false;
			}
		}

		protected List<CartesianTriangularMeshMapLayer> filterMap(Map map) {
			List<CartesianTriangularMeshMapLayer> imageMapLayers = new ArrayList<CartesianTriangularMeshMapLayer>();
			for (AbstractMapLayer layer : map.getLayers()) {
				if (layer instanceof CartesianTriangularMeshMapLayer) {
					imageMapLayers.add(((CartesianTriangularMeshMapLayer) layer));
				}
			}

			return imageMapLayers;
		}
	}
}