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.ArrayList;
  import java.util.Arrays;
  import java.util.Iterator;
  import java.util.List;
  
  import org.eclipse.core.resources.IFolder;
  import org.eclipse.core.resources.IResource;
  import org.eclipse.core.runtime.CoreException;
  import org.eclipse.core.runtime.IProgressMonitor;
  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.jface.window.Window;
  import org.eclipse.swt.widgets.Shell;
  import org.eclipse.ui.IWorkbenchSite;
  import org.eclipse.ui.PlatformUI;
  import org.eclipse.ui.part.ISetSelectionTarget;
  import org.eclipse.wst.jsdt.core.IIncludePathEntry;
  import org.eclipse.wst.jsdt.core.IJavaScriptElement;
  import org.eclipse.wst.jsdt.core.IJavaScriptProject;
  import org.eclipse.wst.jsdt.core.IPackageFragmentRoot;
  import org.eclipse.wst.jsdt.core.JavaScriptModelException;
  import org.eclipse.wst.jsdt.internal.corext.buildpath.BuildpathDelta;
  import org.eclipse.wst.jsdt.internal.corext.buildpath.CPJavaProject;
  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.packageview.JsGlobalScopeContainer;
  import org.eclipse.wst.jsdt.internal.ui.wizards.NewWizardMessages;
  import org.eclipse.wst.jsdt.internal.ui.wizards.buildpaths.CPListElement;
  import org.eclipse.wst.jsdt.internal.ui.wizards.buildpaths.newsourcepage.ClasspathModifierQueries.IRemoveLinkedFolderQuery;
  
  //SelectedElements iff enabled: IPackageFramgentRoot || IJavaScriptProject || JsGlobalScopeContainer
  public class RemoveFromBuildpathAction extends BuildpathModifierAction {
  
  	private final IRunnableContext fContext;
  
  	public RemoveFromBuildpathAction(IWorkbenchSite site) {
  		this(site, null, PlatformUI.getWorkbench().getProgressService());
  		
  		setImageDescriptor(JavaPluginImages.DESC_ELCL_REMOVE_FROM_BP);
  	}
  	
  	public RemoveFromBuildpathAction(IRunnableContext context, ISetSelectionTarget selectionTarget) {
  		this(null, selectionTarget, context);
  		
  		setImageDescriptor(JavaPluginImages.DESC_ELCL_REMOVE_AS_SOURCE_FOLDER);
  		setDisabledImageDescriptor(JavaPluginImages.DESC_DLCL_REMOVE_AS_SOURCE_FOLDER);
      }
  
  	public RemoveFromBuildpathAction(IWorkbenchSite site, ISetSelectionTarget selectionTarget, IRunnableContext context) {
  		super(site, selectionTarget, BuildpathModifierAction.REMOVE_FROM_BP);
  		
  		fContext= context;
  
  		setText(NewWizardMessages.NewSourceContainerWorkbookPage_ToolBar_RemoveFromCP_label);
  		setToolTipText(NewWizardMessages.NewSourceContainerWorkbookPage_ToolBar_RemoveFromCP_tooltip);
      }
  	
  	/**
  	 * {@inheritDoc}
  	 */
  	public String getDetailedDescription() {
  		if (!isEnabled())
  			return null;
  		
  		if (getSelectedElements().size() != 1)
  			return NewWizardMessages.PackageExplorerActionGroup_FormText_Default_FromBuildpath; 
  		
  		Object elem= getSelectedElements().get(0);
          
          if (elem instanceof IJavaScriptProject) {
              String name= ClasspathModifier.escapeSpecialChars(((IJavaScriptElement)elem).getElementName());
          	return Messages.format(NewWizardMessages.PackageExplorerActionGroup_FormText_ProjectFromBuildpath, name);
          } else if (elem instanceof IPackageFragmentRoot) {
              String name= ClasspathModifier.escapeSpecialChars(((IJavaScriptElement)elem).getElementName());
          	return Messages.format(NewWizardMessages.PackageExplorerActionGroup_FormText_fromBuildpath, name);
          } else if (elem instanceof JsGlobalScopeContainer) {
          	return NewWizardMessages.PackageExplorerActionGroup_FormText_Default_FromBuildpath;
          }
          
          return null;
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	public void run() {
  		try {
  
  			final IJavaScriptProject project;
  			Object object= getSelectedElements().get(0);
  			if (object instanceof IJavaScriptProject) {
  				project= (IJavaScriptProject)object;
  			} else if (object instanceof IPackageFragmentRoot) {
  				IPackageFragmentRoot root= (IPackageFragmentRoot)object;
  				project= root.getJavaScriptProject();
  			} else {
  				JsGlobalScopeContainer container= (JsGlobalScopeContainer)object;
  				project= container.getJavaProject();
  			}
  
  			final List elementsToRemove= new ArrayList();
  			final List foldersToDelete= new ArrayList();
  			queryToRemoveLinkedFolders(elementsToRemove, foldersToDelete);
  		
  			final IRunnableWithProgress runnable= new IRunnableWithProgress() {
  				public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
  					try {
  						monitor.beginTask(NewWizardMessages.ClasspathModifier_Monitor_RemoveFromBuildpath, foldersToDelete.size() + 10);
  						
  						CPJavaProject cpProject= CPJavaProject.createFromExisting(project);
  						CPListElement[] toRemove= new CPListElement[elementsToRemove.size()];
  						int i= 0;
  						for (Iterator iterator= elementsToRemove.iterator(); iterator.hasNext();) {
  							Object element= iterator.next();
  							if (element instanceof IJavaScriptProject) {
  								toRemove[i]= ClasspathModifier.getListElement(((IJavaScriptProject)element).getPath(), cpProject.getCPListElements());
  							} else if (element instanceof IPackageFragmentRoot) {
  								toRemove[i]= CPListElement.createFromExisting(((IPackageFragmentRoot)element).getRawIncludepathEntry(), project);
  							} else {
  								toRemove[i]= CPListElement.createFromExisting(((JsGlobalScopeContainer)element).getClasspathEntry(), project);
  							}
  	                        i++;
                          }
  						
  						BuildpathDelta delta= ClasspathModifier.removeFromBuildpath(toRemove, cpProject);
  						ClasspathModifier.commitClassPath(cpProject, new SubProgressMonitor(monitor, 10));
  						
  						deleteFolders(foldersToDelete, new SubProgressMonitor(monitor, foldersToDelete.size()));
  						
  						informListeners(delta);
  						
  						if (delta.getDeletedResources().length == foldersToDelete.size()) {
  							selectAndReveal(new StructuredSelection(project));
  						} else {
  							List result= new ArrayList(Arrays.asList(delta.getDeletedResources()));
  							result.removeAll(foldersToDelete);
  							selectAndReveal(new StructuredSelection(result));
  						}
  					} catch (CoreException e) {
  						throw new InvocationTargetException(e);
  					} finally {
  						monitor.done();
  					}
  				}
  			};
  			fContext.run(false, false, runnable);
  			
  		} catch (CoreException e) {
  			showExceptionDialog(e, NewWizardMessages.RemoveFromBuildpathAction_ErrorTitle);
  		} catch (InvocationTargetException e) {
  			if (e.getCause() instanceof CoreException) {
  				showExceptionDialog((CoreException)e.getCause(), NewWizardMessages.RemoveFromBuildpathAction_ErrorTitle);
  			} else {
  				JavaScriptPlugin.log(e);
  			}
  		} catch (InterruptedException e) {
  		}
  	}
  
  	private void deleteFolders(List folders, IProgressMonitor monitor) throws CoreException {
  		try {
  			monitor.beginTask(NewWizardMessages.ClasspathModifier_Monitor_RemoveFromBuildpath, folders.size()); 
  
  			for (Iterator iter= folders.iterator(); iter.hasNext();) {
  				IFolder folder= (IFolder)iter.next();
  				folder.delete(true, true, new SubProgressMonitor(monitor, 1));
  			}
  		} finally {
  			monitor.done();
  		}
  	}
  	
  	private void queryToRemoveLinkedFolders(final List elementsToRemove, final List foldersToDelete) throws JavaScriptModelException {
  		final Shell shell= getShell();
  		for (Iterator iter= getSelectedElements().iterator(); iter.hasNext();) {
  			Object element= iter.next();
  			if (element instanceof IPackageFragmentRoot) {
  				IFolder folder= getLinkedSourceFolder((IPackageFragmentRoot)element);
  				if (folder != null) {
  					RemoveLinkedFolderDialog dialog= new RemoveLinkedFolderDialog(shell, folder);
  
  					final int result= dialog.open() == Window.OK?dialog.getRemoveStatus():IRemoveLinkedFolderQuery.REMOVE_CANCEL;
  					
  					if (result != IRemoveLinkedFolderQuery.REMOVE_CANCEL) {
  						if (result == IRemoveLinkedFolderQuery.REMOVE_BUILD_PATH) {
  							elementsToRemove.add(element);
  						} else if (result == IRemoveLinkedFolderQuery.REMOVE_BUILD_PATH_AND_FOLDER) {
  							elementsToRemove.add(element);
  							foldersToDelete.add(folder);
  						}
  					}
  				} else {
  					elementsToRemove.add(element);
  				}
  			} else {
  				elementsToRemove.add(element);
  			}
  		}
  	}
  
  	private IFolder getLinkedSourceFolder(IPackageFragmentRoot root) throws JavaScriptModelException {
  		if (root.getKind() != IPackageFragmentRoot.K_SOURCE)
  			return null;
  
  		final IResource resource= root.getCorrespondingResource();
  		if (!(resource instanceof IFolder))
  			return null;
  
  		final IFolder folder= (IFolder) resource;
  		if (!folder.isLinked())
  			return null;
  
  		return folder;
  	}
  
  	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 IJavaScriptProject) {
  					IJavaScriptProject project= (IJavaScriptProject)element;
  					if (!ClasspathModifier.isSourceFolder(project))
  						return false;
  
  				} else if (element instanceof IPackageFragmentRoot) {
  					IIncludePathEntry entry= ((IPackageFragmentRoot) element).getRawIncludepathEntry();
  					if (entry != null && entry.getEntryKind() == IIncludePathEntry.CPE_CONTAINER) {
  						return false;
  					}
  				} else if (element instanceof JsGlobalScopeContainer) {
  					return true;
  				} else {
  					return false;
  				}
  			}
  			return true;
  		} catch (JavaScriptModelException e) {
  		}
  		return false;
  	}
  }
  