ImplementationSelectionPage.java

/*******************************************************************************
 * This file is protected by Copyright. 
 * Please refer to the COPYRIGHT file distributed with this source distribution.
 *
 * This file is part of REDHAWK IDE.
 *
 * 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
 *******************************************************************************/
package gov.redhawk.ide.debug.internal.ui.wizards;

import gov.redhawk.ide.sdr.ui.SdrContentProvider;
import gov.redhawk.ide.sdr.ui.SdrLabelProvider;
import mil.jpeojtrs.sca.spd.Implementation;

import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.UpdateValueStrategy;
import org.eclipse.core.databinding.beans.BeanProperties;
import org.eclipse.core.databinding.validation.IValidator;
import org.eclipse.core.databinding.validation.ValidationStatus;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.databinding.viewers.ViewersObservables;
import org.eclipse.jface.databinding.wizard.WizardPageSupport;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerComparator;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;

public class ImplementationSelectionPage extends WizardPage {

	private LaunchComponentWizard wizard;
	private DataBindingContext dbc = new DataBindingContext();

	protected ImplementationSelectionPage(LaunchComponentWizard wizard) {
		super("implPage", "Select Implementation", null);
		setDescription("Select the implementation to launch in the sandbox.");
		this.wizard = wizard;
	}

	@SuppressWarnings("unchecked")
	@Override
	public void createControl(Composite parent) {
		Composite main = new Composite(parent, SWT.None);
		main.setLayout(new FillLayout());
		
		TreeViewer viewer = new TreeViewer(main, SWT.BORDER | SWT.FULL_SELECTION | SWT.V_SCROLL);
		viewer.setContentProvider(new SdrContentProvider() {
			@Override
			public boolean hasChildren(Object object) {
				if (object instanceof Implementation) {
					return false;
				}
				return super.hasChildren(object);
			}
		});
		viewer.setLabelProvider(new SdrLabelProvider());
		viewer.setFilters(new ViewerFilter[] {
			new ViewerFilter() {
				
				@Override
				public boolean select(Viewer viewer, Object parentElement, Object element) {
					return element instanceof Implementation;
				}
			}
			
		});
		viewer.setComparator(new ViewerComparator() {
			@Override
			public int compare(Viewer viewer, Object e1, Object e2) {
				if (e1 instanceof Implementation && e2 instanceof Implementation) {
					Implementation spd1 = (Implementation) e1;
					Implementation spd2 = (Implementation) e2;
					return spd1.getId().compareTo(spd2.getId()); 
				}
				return super.compare(viewer, e1, e2);
			}
		});
		dbc.bindValue(ViewersObservables.observeInput(viewer), BeanProperties.value(wizard.getClass(), "softPkg").observe(wizard));
		dbc.bindValue(ViewersObservables.observeSingleSelection(viewer), BeanProperties.value(wizard.getClass(), "implementation").observe(wizard),
			new UpdateValueStrategy().setAfterConvertValidator(new IValidator() {

				@Override
				public IStatus validate(Object value) {
					if (value == null) {
						return ValidationStatus.error("Must select an implementation");
					}
					return ValidationStatus.ok();
				}

			}), null);

		WizardPageSupport.create(this, dbc);
		
		setControl(main);
	}

}