Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2006 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 descent.internal.ui.wizards.buildpaths.newsourcepage; import java.lang.reflect.InvocationTargetException; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.OperationCanceledException; import org.eclipse.core.runtime.Platform; import org.eclipse.core.runtime.SubProgressMonitor; import org.eclipse.core.runtime.jobs.ISchedulingRule; import org.eclipse.core.runtime.jobs.Job; import org.eclipse.core.resources.IWorkspaceRunnable; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.swt.widgets.Shell; import org.eclipse.jface.action.Action; import org.eclipse.jface.dialogs.ErrorDialog; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.operation.IRunnableWithProgress; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.wizard.WizardDialog; import org.eclipse.ui.IWorkbenchPage; import org.eclipse.ui.IWorkbenchPart; import org.eclipse.ui.IWorkbenchPartReference; import org.eclipse.ui.IWorkbenchSite; import org.eclipse.ui.part.ISetSelectionTarget; import descent.core.IClasspathEntry; import descent.core.IJavaProject; import descent.core.JavaModelException; import descent.internal.corext.buildpath.ClasspathModifier; import descent.internal.ui.JavaPlugin; import descent.internal.ui.JavaPluginImages; import descent.internal.ui.actions.WorkbenchRunnableAdapter; import descent.internal.ui.packageview.ClassPathContainer; import descent.internal.ui.util.PixelConverter; import descent.internal.ui.wizards.NewWizardMessages; import descent.internal.ui.wizards.buildpaths.CPListElement; import descent.internal.ui.wizards.buildpaths.ClasspathContainerWizard; public class AddLibraryToBuildpathAction extends Action implements ISelectionChangedListener { private IJavaProject fSelectedProject; private final IWorkbenchSite fSite; public AddLibraryToBuildpathAction(IWorkbenchSite site) { super(NewWizardMessages.NewSourceContainerWorkbookPage_ToolBar_AddLibCP_label, JavaPluginImages.DESC_OBJS_LIBRARY); setToolTipText(NewWizardMessages.NewSourceContainerWorkbookPage_ToolBar_AddLibCP_tooltip); fSite = site; } /** * {@inheritDoc} */ public void run() { final IJavaProject project = fSelectedProject; Shell shell = fSite.getShell(); if (shell == null) { shell = JavaPlugin.getActiveWorkbenchShell(); } IClasspathEntry[] classpath; try { classpath = project.getRawClasspath(); } catch (JavaModelException e1) { showExceptionDialog(e1); return; } ClasspathContainerWizard wizard = new ClasspathContainerWizard((IClasspathEntry) null, project, classpath) { /** * {@inheritDoc} */ public boolean performFinish() { if (super.performFinish()) { IWorkspaceRunnable op = new IWorkspaceRunnable() { public void run(IProgressMonitor monitor) throws CoreException, OperationCanceledException { try { finishPage(monitor); } catch (InterruptedException e) { throw new OperationCanceledException(e.getMessage()); } } }; try { ISchedulingRule rule = null; Job job = Platform.getJobManager().currentJob(); if (job != null) rule = job.getRule(); IRunnableWithProgress runnable = null; if (rule != null) runnable = new WorkbenchRunnableAdapter(op, rule, true); else runnable = new WorkbenchRunnableAdapter(op, ResourcesPlugin.getWorkspace().getRoot()); getContainer().run(false, true, runnable); } catch (InvocationTargetException e) { JavaPlugin.log(e); return false; } catch (InterruptedException e) { return false; } return true; } return false; } private void finishPage(IProgressMonitor pm) throws InterruptedException { IClasspathEntry[] selected = getNewEntries(); if (selected != null) { try { pm.beginTask(NewWizardMessages.ClasspathModifier_Monitor_AddToBuildpath, 4); List addedEntries = new ArrayList(); for (int i = 0; i < selected.length; i++) { addedEntries.add(new CPListElement(project, IClasspathEntry.CPE_CONTAINER, selected[i].getPath(), null)); } pm.worked(1); if (pm.isCanceled()) throw new InterruptedException(); List existingEntries = ClasspathModifier.getExistingEntries(project); ClasspathModifier.setNewEntry(existingEntries, addedEntries, project, new SubProgressMonitor(pm, 1)); if (pm.isCanceled()) throw new InterruptedException(); ClasspathModifier.commitClassPath(existingEntries, project, new SubProgressMonitor(pm, 1)); if (pm.isCanceled()) throw new InterruptedException(); List result = new ArrayList(addedEntries.size()); for (int i = 0; i < addedEntries.size(); i++) { result.add(new ClassPathContainer(project, selected[i])); } selectAndReveal(new StructuredSelection(result)); pm.worked(1); } catch (CoreException e) { showExceptionDialog(e); } finally { pm.done(); } } } }; wizard.setNeedsProgressMonitor(true); WizardDialog dialog = new WizardDialog(shell, wizard); PixelConverter converter = new PixelConverter(shell); dialog.setMinimumPageSize(converter.convertWidthInCharsToPixels(70), converter.convertHeightInCharsToPixels(20)); dialog.create(); dialog.open(); } public void selectionChanged(SelectionChangedEvent event) { ISelection selection = event.getSelection(); if (selection instanceof IStructuredSelection) { setEnabled(canHandle((IStructuredSelection) selection)); } else { setEnabled(canHandle(StructuredSelection.EMPTY)); } } public boolean canHandle(IStructuredSelection selection) { if (selection.size() == 1 && selection.getFirstElement() instanceof IJavaProject) { fSelectedProject = (IJavaProject) selection.getFirstElement(); return true; } return false; } private void showExceptionDialog(CoreException exception) { showError(exception, fSite.getShell(), NewWizardMessages.AddLibraryToBuildpathAction_ErrorTitle, exception.getMessage()); } private void showError(CoreException e, Shell shell, String title, String message) { IStatus status = e.getStatus(); if (status != null) { ErrorDialog.openError(shell, message, title, status); } else { MessageDialog.openError(shell, title, message); } } private void selectAndReveal(final ISelection selection) { // validate the input IWorkbenchPage page = fSite.getPage(); if (page == null) return; // get all the view and editor parts List parts = new ArrayList(); IWorkbenchPartReference refs[] = page.getViewReferences(); for (int i = 0; i < refs.length; i++) { IWorkbenchPart part = refs[i].getPart(false); if (part != null) parts.add(part); } refs = page.getEditorReferences(); for (int i = 0; i < refs.length; i++) { if (refs[i].getPart(false) != null) parts.add(refs[i].getPart(false)); } Iterator itr = parts.iterator(); while (itr.hasNext()) { IWorkbenchPart part = (IWorkbenchPart) itr.next(); // get the part's ISetSelectionTarget implementation ISetSelectionTarget target = null; if (part instanceof ISetSelectionTarget) target = (ISetSelectionTarget) part; else target = (ISetSelectionTarget) part.getAdapter(ISetSelectionTarget.class); if (target != null) { // select and reveal resource final ISetSelectionTarget finalTarget = target; page.getWorkbenchWindow().getShell().getDisplay().asyncExec(new Runnable() { public void run() { finalTarget.selectReveal(selection); } }); } } } }