SoftwareView.java

/*******************************************************************************
 * Copyright (c) 2009 EclipseSource Inc. and others. All rights reserved.
 * This program and the accompanying materials are made available under the 
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v1.0 
 * which accompanies this distribution. The Eclipse Public License is available at 
 * http://www.eclipse.org/legal/epl-v10.html and the Eclipse Distribution License 
 * is available at http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors: 
 *     EclipseSource Inc. - initial API and implementation
 *******************************************************************************/
package org.eclipse.examples.toast.backend.rap;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.eclipse.equinox.p2.metadata.IInstallableUnit;
import org.eclipse.examples.toast.backend.data.IVehicle;
import org.eclipse.examples.toast.backend.provisioning.IProvisioner;
import org.eclipse.examples.toast.internal.backend.rap.bundle.Component;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.ListViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.ISelectionListener;
import org.eclipse.ui.ISelectionService;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.part.ViewPart;

public class SoftwareView extends ViewPart {

	public static final String ID = "org.eclipse.examples.toast.backend.rap.softwareView";
	private IVehicle vehicle = null;
	private ListViewer viewer;

	// private IProvisioner provisioner;
	public void createPartControl(final Composite parent) {
		GridLayout parentLayout = LayoutUtil.createGridLayout(3, false, 10, 10);
		parent.setLayout(parentLayout);
		viewer = new ListViewer(parent, SWT.MULTI | SWT.BORDER | SWT.V_SCROLL);
		viewer.getControl().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
		viewer.setLabelProvider(new LabelProvider() {
			public String getText(Object element) {
				return (((IInstallableUnit) element).getProperty(IInstallableUnit.PROP_NAME));
			}
		});

		viewer.setContentProvider(new ArrayContentProvider());
		Composite comp = new Composite(parent, SWT.NONE);
		RowLayout layout = new RowLayout(SWT.VERTICAL);
		layout.fill = true;
		comp.setLayout(layout);
		Button addButton = new Button(comp, SWT.PUSH);
		addButton.setText("Add");
		addButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				final ProvisioningDialog dialog = new ProvisioningDialog(parent.getShell());
				Collection ius = getAvailablePackages(vehicle);
				dialog.setInput(new ArrayList(ius));
				dialog.open();
				List selectedPackages = dialog.getSelectedPackages();
				if (selectedPackages != null && !selectedPackages.isEmpty()) {
					IProvisioner provisioner = Component.getProvisioner();
					IInstallableUnit iu = (IInstallableUnit) selectedPackages.get(0);
					provisioner.install(vehicle.getName(), iu.getId(), null);
					Component.getTickler().tickle(vehicle.getName());
				}
				viewer.setInput(getInstalledPackages(vehicle));
			}
		});

		Button removeButton = new Button(comp, SWT.PUSH);
		removeButton.setText("Remove");
		removeButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
				IProvisioner provisioner = Component.getProvisioner();
				IInstallableUnit iu = (IInstallableUnit) selection.getFirstElement();
				provisioner.uninstall(vehicle.getName(), iu.getId(), null);
				Component.getTickler().tickle(vehicle.getName());
				viewer.setInput(getInstalledPackages(vehicle));
			}
		});
		Button confButton = new Button(comp, SWT.PUSH);
		confButton.setText("Configure");
		createSelectionListener();
	}

	public void setFocus() {
		viewer.getControl().setFocus();
	}

	private Collection getAvailablePackages(IVehicle vehicle) {
		IProvisioner provisioner = Component.getProvisioner();
		if (provisioner == null)
			return new ArrayList();
		return provisioner.getAvailableFeatures(vehicle.getName());
	}

	private Collection getInstalledPackages(IVehicle vehicle) {
		IProvisioner provisioner = Component.getProvisioner();
		if (provisioner == null)
			return new ArrayList();
		return provisioner.getInstalled(vehicle.getName());
	}

	private void createSelectionListener() {
		IWorkbenchWindow window = getSite().getWorkbenchWindow();
		ISelectionService selectionService = window.getSelectionService();
		selectionService.addSelectionListener(new ISelectionListener() {

			public void selectionChanged(final IWorkbenchPart part, final ISelection selection) {
				if (selection != null) {
					IStructuredSelection sselection = (IStructuredSelection) selection;
					IVehicle vehicle = (IVehicle) sselection.getFirstElement();
					if (vehicle != null) {
						System.out.println("vehicle " + vehicle);
						SoftwareView.this.vehicle = vehicle;
						viewer.setInput(getInstalledPackages(vehicle));
					}
				}
			}
		});
	}
}