case-study/jdt-after/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/newsourcepage/ResetAction.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2011 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.jdt.internal.ui.wizards.buildpaths.newsourcepage;
  12
  13 import java.lang.reflect.InvocationTargetException;
  14 import java.util.ArrayList;
  15 import java.util.Iterator;
  16 import java.util.List;
  17
  18 import org.eclipse.core.runtime.CoreException;
  19 import org.eclipse.core.runtime.IProgressMonitor;
  20 import org.eclipse.core.runtime.NullProgressMonitor;
  21 import org.eclipse.core.runtime.SubProgressMonitor;
  22
  23 import org.eclipse.jface.operation.IRunnableContext;
  24 import org.eclipse.jface.operation.IRunnableWithProgress;
  25 import org.eclipse.jface.viewers.IStructuredSelection;
  26 import org.eclipse.jface.viewers.StructuredSelection;
  27
  28 import org.eclipse.ui.IWorkbenchSite;
  29 import org.eclipse.ui.PlatformUI;
  30 import org.eclipse.ui.part.ISetSelectionTarget;
  31
  32 import org.eclipse.jdt.core.IClasspathEntry;
  33 import org.eclipse.jdt.core.IJavaElement;
  34 import org.eclipse.jdt.core.IJavaProject;
  35 import org.eclipse.jdt.core.IPackageFragmentRoot;
  36 import org.eclipse.jdt.core.JavaModelException;
  37
  38 import org.eclipse.jdt.internal.corext.buildpath.BuildpathDelta;
  39 import org.eclipse.jdt.internal.corext.buildpath.ClasspathModifier;
  40
  41 import org.eclipse.jdt.internal.ui.JavaPlugin;
  42 import org.eclipse.jdt.internal.ui.wizards.NewWizardMessages;
  43 import org.eclipse.jdt.internal.ui.wizards.buildpaths.CPListElement;
  44 import org.eclipse.jdt.internal.ui.wizards.buildpaths.CPListElementAttribute;
  45
  46 //Warning: This is unused and untested code. Images and descriptions are missing too.
  47 //SelectedElements iff enabled: IJavaProject || IPackageFragmentRoot || CPListElementAttribute
  48 public class ResetAction extends BuildpathModifierAction {
  49
  50         private final IRunnableContext fContext;
  51
  52         public ResetAction(IWorkbenchSite site) {
  53                 this(site, null, PlatformUI.getWorkbench().getProgressService());
  54         }
  55
  56         public ResetAction(IRunnableContext context, ISetSelectionTarget selectionTarget) {
  57                 this(null, selectionTarget, context);
  58     }
  59
  60         public ResetAction(IWorkbenchSite site, ISetSelectionTarget selectionTarget, IRunnableContext context) {
  61                 super(site, selectionTarget, BuildpathModifierAction.RESET);
  62
  63                 fContext= context;
  64
  65                 setText(NewWizardMessages.NewSourceContainerWorkbookPage_ToolBar_Reset_tooltip);
  66                 setToolTipText(NewWizardMessages.NewSourceContainerWorkbookPage_ToolBar_Reset_tooltip);
  67     }
  68
  69         /**
  70          * {@inheritDoc}
  71          */
  72         @Override
  73         public String getDetailedDescription() {
  74                 if (!isEnabled())
  75                         return null;
  76
  77                 Iterator<?> iterator= getSelectedElements().iterator();
  78                 Object p= iterator.next();
  79                 while (iterator.hasNext()) {
  80                         Object q= iterator.next();
  81                         if (
  82                                         (p instanceof CPListElementAttribute && !(q instanceof CPListElementAttribute)) ||
  83                                         (q instanceof CPListElementAttribute && !(p instanceof CPListElementAttribute))
  84                         ) {
  85                                 return NewWizardMessages.PackageExplorerActionGroup_FormText_Default_Reset;
  86                         }
  87                         p= q;
  88                 }
  89                 if (p instanceof CPListElementAttribute) {
  90             return NewWizardMessages.PackageExplorerActionGroup_FormText_SetOutputToDefault;
  91                 } else {
  92             return NewWizardMessages.PackageExplorerActionGroup_FormText_ResetFilters;
  93                 }
  94         }
  95
  96         /**
  97          * {@inheritDoc}
  98          */
  99         @Override
 100         public void run() {
 101                 final IRunnableWithProgress runnable= new IRunnableWithProgress() {
 102                         public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
 103                                 try {
 104                                         Object firstElement= getSelectedElements().get(0);
 105                                         IJavaProject project= null;
 106                                         if (firstElement instanceof IJavaProject) {
 107                                                 project= (IJavaProject)firstElement;
 108                                         } else if (firstElement instanceof IPackageFragmentRoot) {
 109                                                 project= ((IPackageFragmentRoot)firstElement).getJavaProject();
 110                                         } else {
 111                                                 project= ((CPListElementAttribute)firstElement).getParent().getJavaProject();
 112                                         }
 113
 114                                         List<Object> result= reset(getSelectedElements(), project, monitor);
 115                                         selectAndReveal(new StructuredSelection(result));
 116                                 } catch (CoreException e) {
 117                                         throw new InvocationTargetException(e);
 118                                 }
 119                         }
 120                 };
 121                 try {
 122                 fContext.run(false, false, runnable);
 123         } catch (InvocationTargetException e) {
 124                 if (e.getCause() instanceof CoreException) {
 125                                 showExceptionDialog((CoreException)e.getCause(), ""); //$NON-NLS-1$
 126                         } else {
 127                                 JavaPlugin.log(e);
 128                         }
 129         } catch (InterruptedException e) {
 130         }
 131         }
 132
 133         private List<Object> reset(List<?> selection, IJavaProject project, IProgressMonitor monitor) throws JavaModelException {
 134             if (monitor == null)
 135                 monitor= new NullProgressMonitor();
 136         try {
 137                 monitor.beginTask(NewWizardMessages.ClasspathModifier_Monitor_Resetting, selection.size());
 138                 List<CPListElement> entries= ClasspathModifier.getExistingEntries(project);
 139                 List<Object> result= new ArrayList<Object>();
 140                 for (int i= 0; i < selection.size(); i++) {
 141                         Object element= selection.get(i);
 142                         if (element instanceof IJavaElement) {
 143                                 IJavaElement javaElement= (IJavaElement) element;
 144                                 IPackageFragmentRoot root;
 145                                 if (element instanceof IJavaProject)
 146                                         root= project.getPackageFragmentRoot(project.getResource());
 147                                 else
 148                                         root= (IPackageFragmentRoot) element;
 149                                 CPListElement entry= ClasspathModifier.getClasspathEntry(entries, root);
 150                                 ClasspathModifier.resetFilters(javaElement, entry, project, new SubProgressMonitor(monitor, 1));
 151                                 result.add(javaElement);
 152                         } else {
 153                                 CPListElement selElement= ((CPListElementAttribute) element).getParent();
 154                                 CPListElement entry= ClasspathModifier.getClasspathEntry(entries, selElement);
 155                                 CPListElementAttribute outputFolder= ClasspathModifier.resetOutputFolder(entry, project);
 156                                 result.add(outputFolder);
 157                         }
 158                 }
 159
 160                 ClasspathModifier.commitClassPath(entries, project, null);
 161
 162                 BuildpathDelta delta= new BuildpathDelta(getToolTipText());
 163                 delta.setNewEntries(entries.toArray(new CPListElement[entries.size()]));
 164                 informListeners(delta);
 165
 166                 return result;
 167         } finally {
 168                 monitor.done();
 169         }
 170     }
 171
 172         @Override
 173         protected boolean canHandle(IStructuredSelection elements) {
 174                 try {
 175                 for (Iterator<?> iterator= elements.iterator(); iterator.hasNext();) {
 176                     Object element= iterator.next();
 177                     if (element instanceof IJavaProject) {
 178                         IJavaProject project= (IJavaProject)element;
 179                         if (!project.isOnClasspath(project))
 180                                 return false;
 181
 182                         IClasspathEntry entry= ClasspathModifier.getClasspathEntryFor(project.getPath(), project, IClasspathEntry.CPE_SOURCE);
 183                         if (entry.getInclusionPatterns().length == 0 && entry.getExclusionPatterns().length == 0)
 184                             return false;
 185
 186                                 return true;
 187                     } else if (element instanceof IPackageFragmentRoot) {
 188                         if (ClasspathModifier.filtersSet((IPackageFragmentRoot)element))
 189                                 return true;
 190                     } else if (element instanceof CPListElementAttribute) {
 191                         if (!ClasspathModifier.isDefaultOutputFolder((CPListElementAttribute)element))
 192                                 return true;
 193                     } else {
 194                         return false;
 195                     }
 196                 }
 197         } catch (JavaModelException e) {
 198                 return false;
 199         }
 200                 return false;
 201         }
 202 }