bundles/addons/org.eclipse.apogy.addons.sensors.imaging.camera/src/org/eclipse/apogy/addons/sensors/imaging/camera/wizards/FOVOverlayWizardPage.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
 * 
 * SPDX-License-Identifier: EPL-1.0
 *******************************************************************************/
package org.eclipse.apogy.addons.sensors.imaging.camera.wizards;

import org.eclipse.apogy.addons.sensors.imaging.camera.FOVOverlay;
import org.eclipse.apogy.addons.sensors.imaging.camera.composites.FOVOverlayComposite;
import org.eclipse.core.databinding.DataBindingContext;
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.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;

public class FOVOverlayWizardPage extends WizardPage {
	private final static String WIZARD_PAGE_ID = "org.eclipse.apogy.addons.sensors.imaging.camera.wizards.FOVOverlayWizardPage";

	private final FOVOverlay fovOverlay;

	private FOVOverlayComposite fovOverlayComposite;
	private DataBindingContext m_bindingContext;

	public FOVOverlayWizardPage(FOVOverlay fovOverlay) {
		super(WIZARD_PAGE_ID);
		this.fovOverlay = fovOverlay;

		setTitle("Filed Of View (FOV) Overlay.");
		setDescription("Select the FOV settings.");

		validate();
	}

	@Override
	public void createControl(Composite parent) {
		Composite top = new Composite(parent, SWT.None);
		top.setLayout(new GridLayout(1, false));

		this.fovOverlayComposite = new FOVOverlayComposite(top, SWT.BORDER) {
			@Override
			protected void lineWidthSelected(int lineWidth) {
				validate();
			}

			@Override
			protected void angleIntervalSelected(int angleInterval) {
				validate();
			}

		};
		this.fovOverlayComposite.setFovOverlay(this.fovOverlay);
		this.fovOverlayComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

		setControl(top);

		// Bindings
		this.m_bindingContext = initDataBindingsCustom();

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

	protected void validate() {
		setErrorMessage(null);

		if (this.fovOverlay.getFontName() == null) {
			setErrorMessage("No font selected !");
		}

		if (this.fovOverlay.getAngleInterval() <= 0) {
			setErrorMessage("Invalid Angle Interval specified ! Must be greater than zero.");
		}

		if (this.fovOverlay.getLineWidth() <= 0) {
			setErrorMessage("Invalid Line Width specified ! Must be greater than zero.");
		}

		setPageComplete(getErrorMessage() == null);
	}

	private DataBindingContext initDataBindingsCustom() {
		DataBindingContext bindingContext = new DataBindingContext();

		return bindingContext;
	}
}