eu.etaxonomy.taxeditor.application/src/main/java/eu/etaxonomy/taxeditor/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.update;
  12
  13 import java.net.URI;
  14
  15 import org.eclipse.core.runtime.IStatus;
  16 import org.eclipse.core.runtime.OperationCanceledException;
  17 import org.eclipse.core.runtime.Status;
  18 import org.eclipse.equinox.internal.p2.ui.ProvUI;
  19 import org.eclipse.equinox.internal.p2.ui.dialogs.UpdateSingleIUWizard;
  20 import org.eclipse.equinox.p2.core.IProvisioningAgent;
  21 import org.eclipse.equinox.p2.core.ProvisionException;
  22 import org.eclipse.equinox.p2.operations.ProvisioningJob;
  23 import org.eclipse.equinox.p2.operations.RepositoryTracker;
  24 import org.eclipse.equinox.p2.operations.UpdateOperation;
  25 import org.eclipse.equinox.p2.repository.IRepositoryManager;
  26 import org.eclipse.equinox.p2.repository.metadata.IMetadataRepositoryManager;
  27 import org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob;
  28 import org.eclipse.equinox.p2.ui.ProvisioningUI;
  29 import org.eclipse.jface.wizard.WizardDialog;
  30 import org.osgi.framework.BundleContext;
  31 import org.osgi.framework.ServiceReference;
  32
  33 import eu.etaxonomy.taxeditor.TaxonomicEditorPlugin;
  34 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  35
  36 /**
  37  * UpdateHandler invokes the check for updates UI
  38  *
  39  * @since 3.4
  40  */
  41 public class UpdateHandler extends PreloadingRepositoryHandler {
  42
  43     boolean hasNoRepos = false;
  44
  45     @Override
  46     protected void doExecute(LoadMetadataRepositoryJob job) {
  47         if (hasNoRepos) {
  48             return;
  49         }
  50         UpdateOperation operation = getProvisioningUI().getUpdateOperation(null, null);
  51
  52         // check for updates
  53         IStatus status = checkForUpdates(operation);
  54
  55         if (status.getCode() == UpdateOperation.STATUS_NOTHING_TO_UPDATE) {
  56             MessagingUtils.info(status);
  57             return;
  58         }
  59
  60         if (status.isOK() && status.getSeverity() != IStatus.ERROR) {
  61
  62             boolean doInstall = MessagingUtils.confirmDialog("Updates available", "Do you want to install the available updates ?");
  63             if(doInstall) {
  64                 ProvisioningJob provisioningJob = operation.getProvisioningJob(null);
  65                 if (provisioningJob == null) {
  66                     MessagingUtils.messageDialog("Error in performing update",
  67                             operation,
  68                             "ProvisioningJob could not be created." + System.getProperty("line.separator") +
  69                             "Either this application does not support p2 software installation or this application has been launched from within the Eclipse IDE",
  70                             null,
  71                             false);
  72
  73                 } else {
  74                     if (getProvisioningUI().getPolicy().continueWorkingWithOperation(operation, getShell())) {
  75                         if (UpdateSingleIUWizard.validFor(operation)) {
  76                             // Special case for only updating a single root
  77                             UpdateSingleIUWizard wizard = new UpdateSingleIUWizard(getProvisioningUI(), operation);
  78                             WizardDialog dialog = new WizardDialog(getShell(), wizard);
  79                             dialog.create();
  80                             dialog.open();
  81                         } else {
  82                             // Open the normal version of the update wizard
  83                             getProvisioningUI().openUpdateWizard(false, operation, job);
  84                         }
  85                     }
  86                 }
  87             }
  88         }
  89
  90     }
  91
  92
  93     /**
  94      * @param monitor
  95      * @return
  96      */
  97     private IStatus checkForUpdates(UpdateOperation operation) {
  98
  99         // force refresh all the caches before
 100         IMetadataRepositoryManager metaManager = ProvUI.getMetadataRepositoryManager(ProvisioningUI.getDefaultUI().getSession());
 101         URI[] repos = metaManager.getKnownRepositories(IRepositoryManager.REPOSITORIES_ALL);
 102         for(URI repo : repos) {
 103             try {
 104                 metaManager.refreshRepository(repo, null);
 105             } catch (ProvisionException pe) {
 106                 IStatus errorStatus = new Status(IStatus.ERROR, TaxonomicEditorPlugin.PLUGIN_ID,
 107                         "Error occured while reloading cache.", pe);
 108
 109             } catch (OperationCanceledException oce) {
 110                 IStatus errorStatus = new Status(IStatus.ERROR, TaxonomicEditorPlugin.PLUGIN_ID,
 111                         "Error occured while reloading cache.", oce);
 112             }
 113         }
 114         BundleContext bundleContext = TaxonomicEditorPlugin.getContext();
 115         ServiceReference reference = bundleContext.getServiceReference(IProvisioningAgent.SERVICE_NAME);
 116         if (reference == null) {
 117             IStatus errorStatus = new Status(IStatus.ERROR, TaxonomicEditorPlugin.PLUGIN_ID,
 118                     "No provisioning agent found.  This application is not set up for updates.");
 119             return errorStatus;
 120         }
 121
 122         try {
 123             return operation.resolveModal(null);
 124         } finally {
 125             bundleContext.ungetService(reference);
 126         }
 127     }
 128
 129
 130     @Override
 131     protected boolean preloadRepositories() {
 132         hasNoRepos = false;
 133         RepositoryTracker repoMan = getProvisioningUI().getRepositoryTracker();
 134         if (repoMan.getKnownRepositories(getProvisioningUI().getSession()).length == 0) {
 135             hasNoRepos = true;
 136             return false;
 137         }
 138         return super.preloadRepositories();
 139     }
 140 }