bundles/core/org.eclipse.apogy.core.environment.surface.ui/src/org/eclipse/apogy/core/environment/surface/ui/wizards/RectangleShapeImageLayerWizardPage.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 org.eclipse.apogy.common.emf.transaction.ApogyCommonTransactionFacade;
import org.eclipse.apogy.core.environment.surface.ApogySurfaceEnvironmentPackage;
import org.eclipse.apogy.core.environment.surface.RectangleShapeImageLayer;
import org.eclipse.apogy.core.environment.surface.ui.composites.AbstractShapeImageLayerComposite;
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.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 RectangleShapeImageLayerWizardPage extends WizardPage {
	private final static String WIZARD_PAGE_ID = "org.eclipse.apogy.core.environment.surface.ui.wizards.RectangleShapeImageLayerWizardPage";

	@SuppressWarnings("unused")
	private AbstractShapeImageLayerComposite abstractShapeImageLayerComposite;

	private Text txtRectangleWidth;
	private Text txtRectangleHeight;
	private Button btnShowCenterLines;

	private final RectangleShapeImageLayer rectangleShapeImageLayer;

	private ImageMapLayerPreviewComposite imageMapLayerPreviewComposite;

	private DataBindingContext m_bindingContext;

	public RectangleShapeImageLayerWizardPage(RectangleShapeImageLayer rectangleShapeImageLayer) {
		super(WIZARD_PAGE_ID);
		this.rectangleShapeImageLayer = rectangleShapeImageLayer;

		setTitle("Rectangle Image Layer Settings.");
		setDescription("Sets the Rectangle Image Layer settings.");

		validate();
	}

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

		Group layerSizeGroup = new Group(top, SWT.None);
		layerSizeGroup.setLayout(new GridLayout(2, false));
		layerSizeGroup.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
		layerSizeGroup.setText("Layer General Settings");

		this.abstractShapeImageLayerComposite = new AbstractShapeImageLayerComposite(layerSizeGroup, SWT.NONE,
				this.rectangleShapeImageLayer, false) {
			@Override
			protected void imageResolutionChanged(double newImageWidth) {
				validate();
			}

			@Override
			protected void imageHeightChanged(double newImageWidth) {
				validate();
			}

			@Override
			protected void imageWidthChanged(double newImageWidth) {
				validate();
			}
		};

		// Ellipse Seetting.
		Group ellipseGroup = new Group(top, SWT.None);
		ellipseGroup.setLayout(new GridLayout(2, false));
		ellipseGroup.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
		ellipseGroup.setText("Rectangle Parameters");

		Label lblEllipseWidth = new Label(ellipseGroup, SWT.NONE);
		lblEllipseWidth.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
		lblEllipseWidth.setText("Rectangle Width (m):");

		this.txtRectangleWidth = new Text(ellipseGroup, SWT.BORDER);
		this.txtRectangleWidth.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
		this.txtRectangleWidth.addKeyListener(new KeyListener() {

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

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

		Label lblEllipseHeight = new Label(ellipseGroup, SWT.NONE);
		lblEllipseHeight.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
		lblEllipseHeight.setText("Rectangle Width (m):");

		this.txtRectangleHeight = new Text(ellipseGroup, SWT.BORDER);
		this.txtRectangleHeight.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
		this.txtRectangleHeight.addKeyListener(new KeyListener() {

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

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

		Label lblShowCenterLines = new Label(ellipseGroup, SWT.NONE);
		lblShowCenterLines.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
		lblShowCenterLines.setText("Show Center Lines:");

		this.btnShowCenterLines = new Button(ellipseGroup, SWT.CHECK);
		this.btnShowCenterLines.setAlignment(SWT.RIGHT);
		this.btnShowCenterLines.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, false, 1, 1));
		this.btnShowCenterLines.setText("");
		this.btnShowCenterLines.setToolTipText("Whether or not to show the center lines.");

		// Image Preview.
		Group grImagePreview = new Group(top, SWT.BORDER);
		grImagePreview.setText("Image Preview");
		grImagePreview.setLayout(new GridLayout(3, false));
		grImagePreview.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1));
		this.imageMapLayerPreviewComposite = new ImageMapLayerPreviewComposite(grImagePreview, SWT.BORDER,
				this.rectangleShapeImageLayer);
		this.imageMapLayerPreviewComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 2));

		setControl(top);

		// Bindings
		this.m_bindingContext = initDataBindingsCustom();

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

			}
		});
	}

	protected void validate() {
		setErrorMessage(null);

		if (this.rectangleShapeImageLayer.getRequiredResolution() <= 0) {
			setErrorMessage("Invalid image resolution specified <"
					+ this.rectangleShapeImageLayer.getRequiredResolution() + "> must be larger than zero.");
		}

		if (this.rectangleShapeImageLayer.getRectangleWidth() <= 0) {
			setErrorMessage("Invalid Rectangle Width specified <" + this.rectangleShapeImageLayer.getRectangleWidth()
					+ "> must be larger than zero.");
		}

		if (this.rectangleShapeImageLayer.getRectangleHeight() <= 0) {
			setErrorMessage("Invalid Rectangle Height specified <" + this.rectangleShapeImageLayer.getRectangleHeight()
					+ "> must be larger than zero.");
		}

		setPageComplete(getErrorMessage() == null);
	}

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

		/* Ellipse Width Value. */
		IObservableValue<Double> observEllipseWidthInMeters = EMFEditProperties.value(
				ApogyCommonTransactionFacade.INSTANCE.getTransactionalEditingDomain(this.rectangleShapeImageLayer),
				FeaturePath
						.fromList(ApogySurfaceEnvironmentPackage.Literals.RECTANGLE_SHAPE_IMAGE_LAYER__RECTANGLE_WIDTH))
				.observe(this.rectangleShapeImageLayer);
		IObservableValue<String> observeTxtEllipseWidth = WidgetProperties.text(SWT.Modify)
				.observe(this.txtRectangleWidth);

		bindingContext.bindValue(observeTxtEllipseWidth, observEllipseWidthInMeters,
				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();
					}
				}));

		/* Ellipse Height Value. */
		IObservableValue<Double> observEllipseHeightInMeters = EMFEditProperties.value(
				ApogyCommonTransactionFacade.INSTANCE.getTransactionalEditingDomain(this.rectangleShapeImageLayer),
				FeaturePath.fromList(
						ApogySurfaceEnvironmentPackage.Literals.RECTANGLE_SHAPE_IMAGE_LAYER__RECTANGLE_HEIGHT))
				.observe(this.rectangleShapeImageLayer);
		IObservableValue<String> observeTxtEllipseHeight = WidgetProperties.text(SWT.Modify)
				.observe(this.txtRectangleHeight);

		bindingContext.bindValue(observeTxtEllipseHeight, observEllipseHeightInMeters,
				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();
					}
				}));

		// TODO btnShowCenterLines

		return bindingContext;
	}
}