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 org.eclipse.equinox.internal.p2.ui.dialogs.UpdateSingleIUWizard;
  14 import org.eclipse.equinox.p2.operations.RepositoryTracker;
  15 import org.eclipse.equinox.p2.operations.UpdateOperation;
  16 import org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob;
  17 import org.eclipse.jface.wizard.WizardDialog;
  18
  19 /**
  20  * UpdateHandler invokes the check for updates UI
  21  *
  22  * @since 3.4
  23  */
  24 public class UpdateHandler extends PreloadingRepositoryHandler {
  25
  26     boolean hasNoRepos = false;
  27
  28     @Override
  29     protected void doExecute(LoadMetadataRepositoryJob job) {
  30         if (hasNoRepos) {
  31             return;
  32         }
  33         UpdateOperation operation = getProvisioningUI().getUpdateOperation(null, null);
  34
  35
  36         // check for updates
  37         operation.resolveModal(null);
  38         if (getProvisioningUI().getPolicy().continueWorkingWithOperation(operation, getShell())) {
  39             if (UpdateSingleIUWizard.validFor(operation)) {
  40                 // Special case for only updating a single root
  41                 UpdateSingleIUWizard wizard = new UpdateSingleIUWizard(getProvisioningUI(), operation);
  42                 WizardDialog dialog = new WizardDialog(getShell(), wizard);
  43                 dialog.create();
  44                 dialog.open();
  45             } else {
  46                 // Open the normal version of the update wizard
  47                 getProvisioningUI().openUpdateWizard(false, operation, job);
  48             }
  49         }
  50     }
  51
  52     @Override
  53     protected boolean preloadRepositories() {
  54         hasNoRepos = false;
  55         RepositoryTracker repoMan = getProvisioningUI().getRepositoryTracker();
  56         if (repoMan.getKnownRepositories(getProvisioningUI().getSession()).length == 0) {
  57             hasNoRepos = true;
  58             return false;
  59         }
  60         return super.preloadRepositories();
  61     }
  62 }