Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2011 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 ext.org.eclipse.jdt.internal.ui.wizards.buildpaths.newsourcepage; import java.lang.reflect.InvocationTargetException; import java.util.ArrayList; import java.util.HashSet; import java.util.Iterator; import java.util.List; import java.util.Set; import org.eclipse.swt.widgets.Shell; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IPath; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.OperationCanceledException; import org.eclipse.core.runtime.SubProgressMonitor; import org.eclipse.core.resources.IContainer; import org.eclipse.core.resources.IFolder; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.IWorkspaceRoot; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.MessageDialog; 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.jdt.core.IClasspathEntry; import org.eclipse.jdt.core.IJavaElement; import org.eclipse.jdt.core.IJavaProject; import org.eclipse.jdt.core.IPackageFragment; import org.eclipse.jdt.core.JavaCore; import org.eclipse.jdt.ui.JavaElementLabels; import patch.org.eclipse.jdt.internal.ui.JavaPlugin; import ext.org.eclipse.jdt.internal.corext.buildpath.BuildpathDelta; import ext.org.eclipse.jdt.internal.corext.buildpath.ClasspathModifier; import ext.org.eclipse.jdt.internal.corext.util.Messages; import ext.org.eclipse.jdt.internal.ui.JavaPluginImages; import ext.org.eclipse.jdt.internal.ui.dialogs.StatusInfo; import ext.org.eclipse.jdt.internal.ui.viewsupport.BasicElementLabels; import ext.org.eclipse.jdt.internal.ui.wizards.NewWizardMessages; import ext.org.eclipse.jdt.internal.ui.wizards.buildpaths.BuildPathBasePage; import ext.org.eclipse.jdt.internal.ui.wizards.buildpaths.BuildPathsBlock; import ext.org.eclipse.jdt.internal.ui.wizards.buildpaths.CPListElement; import ext.org.eclipse.jdt.internal.ui.wizards.buildpaths.newsourcepage.ClasspathModifierQueries.OutputFolderQuery; //SelectedElements iff enabled: IJavaProject || IPackageFrament || IFolder public class AddFolderToBuildpathAction extends BuildpathModifierAction { private final IRunnableContext fContext; public AddFolderToBuildpathAction(IWorkbenchSite site) { this(site, null, PlatformUI.getWorkbench().getProgressService()); } public AddFolderToBuildpathAction(IRunnableContext context, ISetSelectionTarget selectionTarget) { this(null, selectionTarget, context); } private AddFolderToBuildpathAction(IWorkbenchSite site, ISetSelectionTarget selectionTarget, IRunnableContext context) { super(site, selectionTarget, BuildpathModifierAction.ADD_SEL_SF_TO_BP); fContext = context; setText(NewWizardMessages.NewSourceContainerWorkbookPage_ToolBar_AddSelSFToCP_label); setImageDescriptor(JavaPluginImages.DESC_ELCL_ADD_AS_SOURCE_FOLDER); setToolTipText(NewWizardMessages.NewSourceContainerWorkbookPage_ToolBar_AddSelSFToCP_tooltip); } /** * {@inheritDoc} */ @Override public String getDetailedDescription() { if (!isEnabled()) return null; if (getSelectedElements().size() != 1) return NewWizardMessages.PackageExplorerActionGroup_FormText_Default_toBuildpath; Object obj = getSelectedElements().get(0); String elementLabel = JavaElementLabels.getTextLabel(obj, JavaElementLabels.ALL_DEFAULT); if (obj instanceof IJavaProject) { return Messages.format(NewWizardMessages.PackageExplorerActionGroup_FormText_ProjectToBuildpath, elementLabel); } else if (obj instanceof IPackageFragment) { return Messages.format(NewWizardMessages.PackageExplorerActionGroup_FormText_PackageToBuildpath, elementLabel); } else if (obj instanceof IResource) { return Messages.format(NewWizardMessages.PackageExplorerActionGroup_FormText_FolderToBuildpath, elementLabel); } return null; } /** * {@inheritDoc} */ @Override public void run() { try { final IJavaProject project; Object object = getSelectedElements().get(0); if (object instanceof IJavaProject) { project = (IJavaProject) object; } else if (object instanceof IPackageFragment) { project = ((IPackageFragment) object).getJavaProject(); } else { IFolder folder = (IFolder) object; project = JavaCore.create(folder.getProject()); if (project == null) return; } final Shell shell = getShell(); final boolean removeProjectFromClasspath; IPath outputLocation = project.getOutputLocation(); final IPath defaultOutputLocation = outputLocation.makeRelative(); final IPath newDefaultOutputLocation; final boolean removeOldClassFiles; IPath projPath = project.getProject().getFullPath(); if (!(getSelectedElements().size() == 1 && getSelectedElements().get(0) instanceof IJavaProject) && //if only the project should be added, then the query does not need to be executed (outputLocation.equals(projPath) || defaultOutputLocation.segmentCount() == 1)) { final OutputFolderQuery outputFolderQuery = ClasspathModifierQueries.getDefaultFolderQuery(shell, defaultOutputLocation); if (outputFolderQuery.doQuery(true, ClasspathModifier.getValidator(getSelectedElements(), project), project)) { newDefaultOutputLocation = outputFolderQuery.getOutputLocation(); removeProjectFromClasspath = outputFolderQuery.removeProjectFromClasspath(); if (BuildPathsBlock.hasClassfiles(project.getProject()) && outputLocation.equals(projPath)) { String title = NewWizardMessages.BuildPathsBlock_RemoveBinariesDialog_title; String message = Messages.format( NewWizardMessages.BuildPathsBlock_RemoveBinariesDialog_description, BasicElementLabels.getPathLabel(projPath, false)); MessageDialog dialog = new MessageDialog(shell, title, null, message, MessageDialog.QUESTION, new String[] { IDialogConstants.YES_LABEL, IDialogConstants.NO_LABEL, IDialogConstants.CANCEL_LABEL }, 0); int answer = dialog.open(); if (answer == 0) { removeOldClassFiles = true; } else if (answer == 1) { removeOldClassFiles = false; } else { return; } } else { removeOldClassFiles = false; } } else { return; } } else { removeProjectFromClasspath = false; removeOldClassFiles = false; newDefaultOutputLocation = defaultOutputLocation; } try { final IRunnableWithProgress runnable = new IRunnableWithProgress() { public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException { try { List<IJavaElement> result = addToClasspath(getSelectedElements(), project, newDefaultOutputLocation.makeAbsolute(), removeProjectFromClasspath, removeOldClassFiles, 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.AddSourceFolderToBuildpathAction_ErrorTitle); } else { JavaPlugin.log(e); } } catch (final InterruptedException e) { } } catch (CoreException e) { showExceptionDialog(e, NewWizardMessages.AddSourceFolderToBuildpathAction_ErrorTitle); } } private List<IJavaElement> addToClasspath(List<?> elements, IJavaProject project, IPath outputLocation, boolean removeProjectFromClasspath, boolean removeOldClassFiles, IProgressMonitor monitor) throws OperationCanceledException, CoreException { if (!project.getProject().hasNature(JavaCore.NATURE_ID)) { StatusInfo rootStatus = new StatusInfo(); rootStatus.setError(NewWizardMessages.ClasspathModifier_Error_NoNatures); throw new CoreException(rootStatus); } try { monitor.beginTask(NewWizardMessages.ClasspathModifier_Monitor_AddToBuildpath, elements.size() + 4); IWorkspaceRoot workspaceRoot = JavaPlugin.getWorkspace().getRoot(); if (removeOldClassFiles) { IResource res = workspaceRoot.findMember(project.getOutputLocation()); if (res instanceof IContainer && BuildPathsBlock.hasClassfiles(res)) { BuildPathsBlock.removeOldClassfiles(res); } } BuildpathDelta delta = new BuildpathDelta(getToolTipText()); if (!project.getOutputLocation().equals(outputLocation)) { project.setOutputLocation(outputLocation, new SubProgressMonitor(monitor, 1)); delta.setDefaultOutputLocation(outputLocation); } else { monitor.worked(1); } List<CPListElement> existingEntries = ClasspathModifier.getExistingEntries(project); if (removeProjectFromClasspath) { ClasspathModifier.removeFromClasspath(project, existingEntries, new SubProgressMonitor(monitor, 1)); } else { monitor.worked(1); } List<CPListElement> newEntries = new ArrayList<CPListElement>(); for (int i = 0; i < elements.size(); i++) { Object element = elements.get(i); CPListElement entry; if (element instanceof IResource) entry = ClasspathModifier.addToClasspath((IResource) element, existingEntries, newEntries, project, new SubProgressMonitor(monitor, 1)); else entry = ClasspathModifier.addToClasspath((IJavaElement) element, existingEntries, newEntries, project, new SubProgressMonitor(monitor, 1)); newEntries.add(entry); } Set<CPListElement> modifiedSourceEntries = new HashSet<CPListElement>(); BuildPathBasePage.fixNestingConflicts(newEntries.toArray(new CPListElement[newEntries.size()]), existingEntries.toArray(new CPListElement[existingEntries.size()]), modifiedSourceEntries); ClasspathModifier.setNewEntry(existingEntries, newEntries, project, new SubProgressMonitor(monitor, 1)); ClasspathModifier.commitClassPath(existingEntries, project, new SubProgressMonitor(monitor, 1)); delta.setNewEntries(existingEntries.toArray(new CPListElement[existingEntries.size()])); informListeners(delta); List<IJavaElement> result = new ArrayList<IJavaElement>(); for (int i = 0; i < newEntries.size(); i++) { IClasspathEntry entry = newEntries.get(i).getClasspathEntry(); IJavaElement root; if (entry.getPath().equals(project.getPath())) root = project; else root = project.findPackageFragmentRoot(entry.getPath()); if (root != null) { result.add(root); } } return result; } finally { monitor.done(); } } @Override 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 IJavaProject) { if (ClasspathModifier.isSourceFolder((IJavaProject) element)) return false; } else if (element instanceof IPackageFragment) { IPackageFragment fragment = (IPackageFragment) element; if (ClasspathModifier.isDefaultFragment(fragment)) return false; if (ClasspathModifier.isInExternalOrArchive(fragment)) return false; IResource res; if ((res = fragment.getResource()) != null && res.isVirtual()) return false; } else if (element instanceof IFolder) { IProject project = ((IFolder) element).getProject(); IJavaProject javaProject = JavaCore.create(project); if (javaProject == null || !javaProject.exists() || ((IFolder) element).isVirtual()) return false; } else { return false; } } return true; } catch (CoreException e) { } return false; } }