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Java > Open Source Codes > org > eclipse > update > internal > ui > views > UninstallFeaturesAction


1 /*******************************************************************************
2  * Copyright (c) 2005, 2006 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 org.eclipse.update.internal.ui.views;
12
13 import java.lang.reflect.InvocationTargetException JavaDoc;
14
15 import org.eclipse.core.runtime.CoreException;
16 import org.eclipse.core.runtime.IStatus;
17 import org.eclipse.jface.dialogs.ErrorDialog;
18 import org.eclipse.jface.viewers.IStructuredSelection;
19 import org.eclipse.swt.widgets.Shell;
20 import org.eclipse.update.configuration.IConfiguredSite;
21 import org.eclipse.update.core.IFeature;
22 import org.eclipse.update.internal.core.InstallRegistry;
23 import org.eclipse.update.internal.operations.OperationFactory;
24 import org.eclipse.update.internal.operations.UpdateUtils;
25 import org.eclipse.update.internal.ui.UpdateUI;
26 import org.eclipse.update.internal.ui.UpdateUIMessages;
27 import org.eclipse.update.internal.ui.model.ConfiguredFeatureAdapter;
28 import org.eclipse.update.operations.IFeatureOperation;
29 import org.eclipse.update.operations.IOperation;
30 import org.eclipse.update.operations.OperationsManager;
31
32 public class UninstallFeaturesAction extends FeatureAction {
33
34     private ConfiguredFeatureAdapter[] adapters;
35
36     public UninstallFeaturesAction( Shell shell, String JavaDoc text) {
37         super(shell, text);
38         setWindowTitle(UpdateUIMessages.FeatureUninstallAction_dialogTitle);
39     }
40
41     
42     public void run() {
43         try {
44             IStatus status = OperationsManager.getValidator().validatePlatformConfigValid();
45             if (status != null)
46                 throw new CoreException(status);
47             
48             if (adapters == null || !confirm(UpdateUIMessages.FeatureUninstallAction_uninstallQuestion))
49                 return;
50
51             // If current config is broken, confirm with the user to continue
52 if (OperationsManager.getValidator().validateCurrentState() != null &&
53                     !confirm(UpdateUIMessages.Actions_brokenConfigQuestion))
54                 return;
55             
56             IFeature[] features = new IFeature[adapters.length];
57             IConfiguredSite[] configuredSites = new IConfiguredSite[adapters.length];
58             for( int i = 0; i < adapters.length; i++) {
59                 features[i] = adapters[i].getFeature(null);
60                 configuredSites[i] = adapters[i].getConfiguredSite();
61             }
62
63             IOperation uninstallFeaturesOperation =
64                 ((OperationFactory)OperationsManager.getOperationFactory()).createUninstallFeaturesOperation( configuredSites, features);
65
66             boolean restartNeeded = uninstallFeaturesOperation.execute(null, null);
67             UpdateUI.requestRestart(restartNeeded);
68
69         } catch (CoreException e) {
70             ErrorDialog.openError(shell, null, null, e.getStatus());
71         } catch (InvocationTargetException JavaDoc e) {
72             // This should not happen
73 UpdateUtils.logException(e.getTargetException());
74         }
75     }
76
77
78     public void setSelection(IStructuredSelection selection) {
79         
80         this.adapters = (ConfiguredFeatureAdapter[]) selection.toList().toArray(new ConfiguredFeatureAdapter[selection.size()]);
81         setText(UpdateUIMessages.FeatureUninstallAction_uninstall);
82     }
83     
84     public boolean canExecuteAction() {
85         
86         if (adapters == null || adapters.length == 0)
87             return false;
88         
89         for( int i = 0; i < adapters.length; i++) {
90             if (adapters[i].isConfigured())
91                 return false;
92         
93             try {
94                 // check for pending changes (e.g. if the feature has just been disabled)
95 IFeatureOperation pendingOperation = OperationsManager.findPendingOperation(adapters[i].getFeature(null));
96                 if (pendingOperation != null)
97                     return false;
98
99                 if (InstallRegistry.getInstance().get("feature_"+adapters[i].getFeature(null).getVersionedIdentifier()) == null) //$NON-NLS-1$
100 return false;
101             } catch (CoreException e) {
102                 return false;
103             }
104         }
105                 
106         return true;
107     }
108 }
109
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