eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/handler/update/UpdateHandler.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2009 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package eu.etaxonomy.taxeditor.handler.update;
  12
  13 import java.net.URI;
  14
  15 import org.eclipse.core.runtime.IProgressMonitor;
  16 import org.eclipse.core.runtime.IStatus;
  17 import org.eclipse.core.runtime.Status;
  18 import org.eclipse.core.runtime.jobs.IJobChangeEvent;
  19 import org.eclipse.core.runtime.jobs.Job;
  20 import org.eclipse.core.runtime.jobs.JobChangeAdapter;
  21 import org.eclipse.e4.core.di.annotations.Execute;
  22 import org.eclipse.e4.ui.di.UISynchronize;
  23 import org.eclipse.e4.ui.workbench.IWorkbench;
  24 import org.eclipse.equinox.p2.core.IProvisioningAgent;
  25 import org.eclipse.equinox.p2.operations.ProvisioningJob;
  26 import org.eclipse.equinox.p2.operations.ProvisioningSession;
  27 import org.eclipse.equinox.p2.operations.UpdateOperation;
  28 import org.eclipse.jface.dialogs.MessageDialog;
  29 import org.eclipse.swt.widgets.Shell;
  30
  31 /**
  32  * UpdateHandler invokes the check for updates UI
  33  *
  34  * @since 3.4
  35  */
  36 public class UpdateHandler {
  37
  38     @Execute
  39     public void execute(final IProvisioningAgent agent, final Shell shell, final UISynchronize sync,
  40             final IWorkbench workbench) {
  41         Job updateJob = new Job("Update Job") {
  42             @Override
  43             protected IStatus run(final IProgressMonitor monitor) {
  44                 return checkForUpdates(agent, shell, sync, workbench, monitor);
  45             }
  46         };
  47         updateJob.schedule();
  48     }
  49
  50     private IStatus checkForUpdates(final IProvisioningAgent agent, final Shell shell, final UISynchronize sync,
  51             final IWorkbench workbench, IProgressMonitor monitor) {
  52
  53         // configure update operation
  54         final ProvisioningSession session = new ProvisioningSession(agent);
  55         final UpdateOperation operation = new UpdateOperation(session);
  56         configureUpdate(operation);
  57
  58         // check for updates, this causes I/O
  59         final IStatus status = operation.resolveModal(monitor);
  60
  61         // failed to find updates (inform user and exit)
  62         if (status.getCode() == UpdateOperation.STATUS_NOTHING_TO_UPDATE) {
  63             showMessage(shell, sync);
  64             return Status.CANCEL_STATUS;
  65         }
  66
  67         // run installation
  68         final ProvisioningJob provisioningJob = operation.getProvisioningJob(monitor);
  69
  70         // updates cannot run from within Eclipse IDE!!!
  71         if (provisioningJob == null) {
  72             System.err.println("Trying to update from the Eclipse IDE? This won't work!");
  73             return Status.CANCEL_STATUS;
  74         }
  75         configureProvisioningJob(provisioningJob, shell, sync, workbench);
  76
  77         provisioningJob.schedule();
  78         return Status.OK_STATUS;
  79
  80     }
  81
  82     private void configureProvisioningJob(ProvisioningJob provisioningJob, final Shell shell, final UISynchronize sync,
  83             final IWorkbench workbench) {
  84
  85         // register a job change listener to track
  86         // installation progress and notify user upon success
  87         provisioningJob.addJobChangeListener(new JobChangeAdapter() {
  88             @Override
  89             public void done(IJobChangeEvent event) {
  90                 if (event.getResult().isOK()) {
  91                     sync.syncExec(new Runnable() {
  92
  93                         @Override
  94                         public void run() {
  95                             boolean restart = MessageDialog.openQuestion(shell, "Updates installed, restart?",
  96                                     "Updates have been installed. Do you want to restart?");
  97                             if (restart) {
  98                                 workbench.restart();
  99                             }
 100                         }
 101                     });
 102
 103                 }
 104                 super.done(event);
 105             }
 106         });
 107
 108     }
 109
 110     private void showMessage(final Shell parent, final UISynchronize sync) {
 111         sync.syncExec(new Runnable() {
 112
 113             @Override
 114             public void run() {
 115                 MessageDialog.openWarning(parent, "No update",
 116                         "No updates for the current installation have been found.");
 117             }
 118         });
 119     }
 120
 121     private UpdateOperation configureUpdate(final UpdateOperation operation) {
 122         // create uri and check for validity
 123         URI uri = null;
 124         uri = P2Util.getP2UpdateRepository();
 125
 126         // set location of artifact and metadata repo
 127         operation.getProvisioningContext().setArtifactRepositories(new URI[] { uri });
 128         operation.getProvisioningContext().setMetadataRepositories(new URI[] { uri });
 129         return operation;
 130     }
 131
 132 }