content: /*******************************************************************************
   * Copyright (c) 2000, 2008 IBM Corporation and others.
   * All rights reserved. This program and the accompanying materials
   * are made available under the terms of the Eclipse Public License v1.0
   * which accompanies this distribution, and is available at
   * http://www.eclipse.org/legal/epl-v10.html
   *
   * Contributors:
   *     IBM Corporation - initial API and implementation
   *******************************************************************************/
  package org.eclipse.wst.jsdt.internal.ui.wizards.buildpaths.newsourcepage;
  
  import java.lang.reflect.InvocationTargetException;
  import java.util.Iterator;
  import java.util.List;
  
  import org.eclipse.core.resources.IContainer;
  import org.eclipse.core.resources.IFile;
  import org.eclipse.core.resources.IResource;
  import org.eclipse.core.runtime.CoreException;
  import org.eclipse.core.runtime.IProgressMonitor;
  import org.eclipse.core.runtime.NullProgressMonitor;
  import org.eclipse.core.runtime.SubProgressMonitor;
  import org.eclipse.jface.operation.IRunnableContext;
  import org.eclipse.jface.operation.IRunnableWithProgress;
  import org.eclipse.jface.viewers.IStructuredSelection;
  import org.eclipse.jface.viewers.StructuredSelection;
  import org.eclipse.ui.IWorkbenchSite;
  import org.eclipse.ui.PlatformUI;
  import org.eclipse.ui.part.ISetSelectionTarget;
  import org.eclipse.wst.jsdt.core.IJavaScriptProject;
  import org.eclipse.wst.jsdt.core.IPackageFragmentRoot;
  import org.eclipse.wst.jsdt.core.JavaScriptCore;
  import org.eclipse.wst.jsdt.core.JavaScriptModelException;
  import org.eclipse.wst.jsdt.internal.corext.buildpath.BuildpathDelta;
  import org.eclipse.wst.jsdt.internal.corext.buildpath.ClasspathModifier;
  import org.eclipse.wst.jsdt.internal.corext.util.Messages;
  import org.eclipse.wst.jsdt.internal.ui.JavaScriptPlugin;
  import org.eclipse.wst.jsdt.internal.ui.JavaPluginImages;
  import org.eclipse.wst.jsdt.internal.ui.wizards.NewWizardMessages;
  import org.eclipse.wst.jsdt.internal.ui.wizards.buildpaths.CPListElement;
  
  //SelectedElements iff enabled: IResource
  public class IncludeToBuildpathAction extends BuildpathModifierAction {
  
  	private final IRunnableContext fContext;
  
  	public IncludeToBuildpathAction(IWorkbenchSite site) {
  		this(site, null, PlatformUI.getWorkbench().getProgressService());
  	}
  	
  	public IncludeToBuildpathAction(IRunnableContext context, ISetSelectionTarget selectionTarget) {
  		this(null, selectionTarget, context);
      }
  	
  	private IncludeToBuildpathAction(IWorkbenchSite site, ISetSelectionTarget selectionTarget, IRunnableContext context) {
  		super(site, selectionTarget, BuildpathModifierAction.INCLUDE);
  		
  		fContext= context;
  		
  		setText(NewWizardMessages.NewSourceContainerWorkbookPage_ToolBar_Unexclude_label);
  		setImageDescriptor(JavaPluginImages.DESC_ELCL_INCLUDE_ON_BUILDPATH);
  		setToolTipText(NewWizardMessages.NewSourceContainerWorkbookPage_ToolBar_Unexclude_tooltip);
  		setDisabledImageDescriptor(JavaPluginImages.DESC_DLCL_INCLUDE_ON_BUILDPATH);
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	public String getDetailedDescription() {
  		if (!isEnabled())
  			return null;
  		
  		if (getSelectedElements().size() != 1)
  			return NewWizardMessages.PackageExplorerActionGroup_FormText_Default_Unexclude;
  		
  		IResource resource= (IResource) getSelectedElements().get(0);
          String name= ClasspathModifier.escapeSpecialChars(resource.getName());
  		
          if (resource instanceof IContainer) {
          	return Messages.format(NewWizardMessages.PackageExplorerActionGroup_FormText_UnexcludeFolder, name);
          } else if (resource instanceof IFile) {
          	return Messages.format(NewWizardMessages.PackageExplorerActionGroup_FormText_UnexcludeFile, name);
          }
          
          return null;
  	}
  	
  	/**
  	 * {@inheritDoc}
  	 */
  	public void run() {
  		IResource resource= (IResource)getSelectedElements().get(0);
  		final IJavaScriptProject project= JavaScriptCore.create(resource.getProject());
  
  		try {
  			final IRunnableWithProgress runnable= new IRunnableWithProgress() {
  				public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
  					try {
  						List result= unExclude(getSelectedElements(), project, monitor);
  						selectAndReveal(new StructuredSelection(result));
  					} catch (CoreException e) {
  						throw new InvocationTargetException(e);
  					}
  				}
  			};
  			fContext.run(false, false, runnable);
  		} catch (final InvocationTargetException e) {
  			if (e.getCause() instanceof CoreException) {
  				showExceptionDialog((CoreException)e.getCause(), NewWizardMessages.IncludeToBuildpathAction_ErrorTitle);
  			} else {
  				JavaScriptPlugin.log(e);
  			}
  		} catch (final InterruptedException e) {
  		}
  	}
  
  	protected List unExclude(List elements, IJavaScriptProject project, IProgressMonitor monitor) throws JavaScriptModelException {
  		if (monitor == null)
  			monitor= new NullProgressMonitor();
  		try {
  			monitor.beginTask(NewWizardMessages.ClasspathModifier_Monitor_Including, 2 * elements.size()); 
  
  			List entries= ClasspathModifier.getExistingEntries(project);
  			for (int i= 0; i < elements.size(); i++) {
  				IResource resource= (IResource) elements.get(i);
  				IPackageFragmentRoot root= ClasspathModifier.getFragmentRoot(resource, project, new SubProgressMonitor(monitor, 1));
  				if (root != null) {
  					CPListElement entry= ClasspathModifier.getClasspathEntry(entries, root);
  					ClasspathModifier.unExclude(resource, entry, project, new SubProgressMonitor(monitor, 1));
  				}
  			}
  
  			ClasspathModifier.commitClassPath(entries, project, new SubProgressMonitor(monitor, 4));
  			
          	BuildpathDelta delta= new BuildpathDelta(getToolTipText());
          	delta.setNewEntries((CPListElement[])entries.toArray(new CPListElement[entries.size()]));
          	informListeners(delta);
  			
  			List resultElements= ClasspathModifier.getCorrespondingElements(elements, project);
  			return resultElements;
  		} finally {
  			monitor.done();
  		}
  	}
  
  	protected boolean canHandle(IStructuredSelection elements) {
  		if (elements.size() == 0)
  			return false;
  
  		try {
  			for (Iterator iter= elements.iterator(); iter.hasNext();) {
  				Object element= iter.next();
  				if (element instanceof IResource) {
  					IResource resource= (IResource)element;
  					IJavaScriptProject project= JavaScriptCore.create(resource.getProject());
  					if (project == null || !project.exists())
  						return false;
  
  					if (!ClasspathModifier.isExcluded(resource, project))
  						return false;
  				} else {
  					return false;
  				}
  			}
  			return true;
  		} catch (CoreException e) {
  		}
  		return false;
  	}
  }
  