bundles/addons/org.eclipse.apogy.addons.sensors.imaging.camera/src/org/eclipse/apogy/addons/sensors/imaging/camera/wizards/EMFFeatureOverlayWizardPage.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 java.text.DecimalFormat;

import org.eclipse.apogy.addons.sensors.imaging.camera.EMFFeatureOverlay;
import org.eclipse.apogy.addons.sensors.imaging.camera.composites.EMFFeatureOverlayComposite;
import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.jface.viewers.ISelection;
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 EMFFeatureOverlayWizardPage extends WizardPage {
	private final static String WIZARD_PAGE_ID = "org.eclipse.apogy.addons.sensors.imaging.camera.wizards.EMFFeatureOverlayWizardPage";

	private final EMFFeatureOverlay emfFeatureOverlay;
	private EMFFeatureOverlayComposite emfFeatureOverlayComposite;

	private DataBindingContext m_bindingContext;

	public EMFFeatureOverlayWizardPage(EMFFeatureOverlay emfFeatureOverlay) {
		super(WIZARD_PAGE_ID);
		this.emfFeatureOverlay = emfFeatureOverlay;

		setTitle("EMF Feature Overlay.");
		setDescription("Select the feature to display.");

		validate();
	}

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

		this.emfFeatureOverlayComposite = new EMFFeatureOverlayComposite(top, SWT.BORDER) {
			@Override
			protected void newVariableFeatureReferenceSelected(ISelection selection) {
				validate();
			}

			@Override
			protected void newNumberFormatSelected(String numberFormat) {
				validate();
			}
		};
		this.emfFeatureOverlayComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
		this.emfFeatureOverlayComposite.setEmfFeatureOverlay(this.emfFeatureOverlay);

		setControl(top);

		// Bindings
		this.m_bindingContext = initDataBindingsCustom();

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

	protected void validate() {
		setErrorMessage(null);

		if (this.emfFeatureOverlay.getVariableFeatureReference().getVariable() == null) {
			setErrorMessage("No variable selected !");
		}

		if (this.emfFeatureOverlay.getNumberFormat() == null) {
			setErrorMessage("Number format is not defined !");
		} else {
			try {
				DecimalFormat format = new DecimalFormat(this.emfFeatureOverlay.getNumberFormat());
				format.format(1.234);
			} catch (Throwable t) {
				setErrorMessage("Invalid number format specified !");
			}
		}

		setPageComplete(getErrorMessage() == null);
	}

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

		return bindingContext;
	}
}