Java tutorial
/****************************************************************************** * Copyright (c) 2009-2013, Linagora * * 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: * Linagora - initial API and implementation *******************************************************************************/ package com.ebmwebsourcing.petals.common.internal.provisional.ui; import java.util.ArrayList; import java.util.Collection; import java.util.HashSet; import java.util.Iterator; import java.util.List; import java.util.Set; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.IWorkspaceRoot; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.IStatus; import org.eclipse.jdt.core.ICompilationUnit; import org.eclipse.jdt.core.IJavaElement; import org.eclipse.jdt.core.IJavaProject; import org.eclipse.jdt.core.IPackageFragment; import org.eclipse.jdt.core.IPackageFragmentRoot; import org.eclipse.jdt.core.IRegion; import org.eclipse.jdt.core.JavaCore; import org.eclipse.jdt.core.JavaModelException; import org.eclipse.jdt.ui.JavaElementComparator; import org.eclipse.jdt.ui.JavaElementLabelProvider; import org.eclipse.jdt.ui.ProblemsLabelDecorator; import org.eclipse.jdt.ui.StandardJavaElementContentProvider; import org.eclipse.jdt.ui.jarpackager.JarPackageData; import org.eclipse.jface.viewers.CheckStateChangedEvent; import org.eclipse.jface.viewers.DecoratingLabelProvider; import org.eclipse.jface.viewers.ICheckStateListener; import org.eclipse.jface.viewers.ITreeContentProvider; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerFilter; import org.eclipse.jface.wizard.IWizardPage; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import com.ebmwebsourcing.petals.common.internal.PetalsCommonPlugin; import com.ebmwebsourcing.petals.common.internal.provisional.ui.jdt.CheckboxTreeAndListGroup; import com.ebmwebsourcing.petals.common.internal.provisional.ui.jdt.ContainerFilter; import com.ebmwebsourcing.petals.common.internal.provisional.utils.JavaUtils; /** * A wizard page to export some elements of a Java project into a JAR. * @author Vincent Zurczak - EBM WebSourcing */ public class JarExportWizardPage extends WizardPage implements IWizardPage { private IJavaProject selectedProject; private CheckboxTreeAndListGroup javaSelectionViewer; private final JarPackageData jarDescription = new JarPackageData(); private boolean exportSources, compressJar, exportWarningsAndErrors = true; /** * @param pageName */ public JarExportWizardPage(String pageName) { super(pageName); this.jarDescription.setIncludeDirectoryEntries(true); this.jarDescription.setExportClassFiles(true); this.jarDescription.setOverwrite(true); this.jarDescription.setIncludeDirectoryEntries(true); } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.IDialogPage * #createControl(org.eclipse.swt.widgets.Composite) */ @Override public void createControl(Composite parent) { Composite container = new Composite(parent, SWT.NONE); container.setLayout(new GridLayout()); container.setLayoutData(new GridData(GridData.FILL_BOTH)); new Label(container, SWT.NONE).setText( "Select the resources to export.\nThe following projects are the project you selected and the projects it depends on."); int labelFlags = JavaElementLabelProvider.SHOW_BASICS | JavaElementLabelProvider.SHOW_OVERLAY_ICONS | JavaElementLabelProvider.SHOW_SMALL_ICONS; ITreeContentProvider treeContentProvider = new StandardJavaElementContentProvider() { @Override public boolean hasChildren(Object element) { return !(element instanceof IPackageFragment) && super.hasChildren(element); } @Override public Object[] getElements(Object parent) { if (parent instanceof IWorkspaceRoot) { List<IJavaProject> result = JavaUtils .getJavaProjectDependencies(JarExportWizardPage.this.selectedProject); return result.toArray(); } return super.getElements(parent); } }; final DecoratingLabelProvider provider = new DecoratingLabelProvider( new JavaElementLabelProvider(labelFlags), new ProblemsLabelDecorator(null)); this.javaSelectionViewer = new CheckboxTreeAndListGroup(container, ResourcesPlugin.getWorkspace().getRoot(), treeContentProvider, provider, new StandardJavaElementContentProvider(), provider, SWT.NONE, 420, 150) { /* * (non-Javadoc) * @see com.ebmwebsourcing.petals.common.internal.provisional.ui.jdt.CheckboxTreeAndListGroup * #setTreeChecked(java.lang.Object, boolean) */ @Override protected void setTreeChecked(final Object element, final boolean state) { if (element instanceof IResource) { final IResource resource = (IResource) element; if (resource.getName().charAt(0) == '.') return; } super.setTreeChecked(element, state); } }; this.javaSelectionViewer.addTreeFilter(new ViewerFilter() { @Override public boolean select(Viewer viewer, Object parent, Object element) { boolean result = true; if (element instanceof IPackageFragment) { IPackageFragment pkg = (IPackageFragment) element; try { if (pkg.isDefaultPackage()) result = pkg.hasChildren(); else result = !pkg.hasSubpackages() || pkg.hasChildren() || pkg.getNonJavaResources().length > 0; } catch (JavaModelException e) { result = false; } } return result; } }); this.javaSelectionViewer.setTreeComparator(new JavaElementComparator()); this.javaSelectionViewer.setListComparator(new JavaElementComparator()); this.javaSelectionViewer.addTreeFilter(new ContainerFilter(ContainerFilter.FILTER_NON_CONTAINERS)); this.javaSelectionViewer.addTreeFilter(new ViewerFilter() { @Override public boolean select(Viewer viewer, Object p, Object element) { if (element instanceof IPackageFragmentRoot) { IPackageFragmentRoot root = (IPackageFragmentRoot) element; return !root.isArchive() && !root.isExternal(); } return true; } }); this.javaSelectionViewer.addListFilter(new ContainerFilter(ContainerFilter.FILTER_CONTAINERS)); this.javaSelectionViewer.expandTreeToLevel(this.selectedProject, 1); this.javaSelectionViewer.addCheckStateListener(new ICheckStateListener() { @Override public void checkStateChanged(CheckStateChangedEvent event) { validate(); } }); // Options final Button exportSourcesButton = new Button(container, SWT.CHECK); exportSourcesButton.setText("Export sources"); exportSourcesButton.setSelection(this.exportSources); exportSourcesButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { JarExportWizardPage.this.exportSources = exportSourcesButton.getSelection(); validate(); } }); final Button compressJarButton = new Button(container, SWT.CHECK); compressJarButton.setText("Compress the content of the JAR file"); compressJarButton.setSelection(this.compressJar); compressJarButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { JarExportWizardPage.this.compressJar = compressJarButton.getSelection(); validate(); } }); final Button exportWarningsAndErrorsButton = new Button(container, SWT.CHECK); exportWarningsAndErrorsButton.setText("Export class files with compile warnings or errors"); exportWarningsAndErrorsButton.setSelection(this.exportWarningsAndErrors); exportWarningsAndErrorsButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { JarExportWizardPage.this.exportWarningsAndErrors = exportWarningsAndErrorsButton.getSelection(); validate(); } }); validate(); setErrorMessage(null); setControl(container); } /** * Validate the page entries. */ private void validate() { this.jarDescription.setExportJavaFiles(this.exportSources); this.jarDescription.setCompress(this.compressJar); this.jarDescription.setExportErrors(this.exportWarningsAndErrors); this.jarDescription.setExportWarnings(this.exportWarningsAndErrors); IFile[] files = getSelectedClassFiles(); if (files.length == 0) { setPageComplete(false); return; } this.jarDescription.setElements(files); setPageComplete(true); } /** * @return */ private IFile[] getSelectedClassFiles() { Iterator<?> it = this.javaSelectionViewer.getAllCheckedListItems(); if (!it.hasNext()) return new IFile[0]; ArrayList<IFile> files = new ArrayList<IFile>(); while (it.hasNext()) { Object o = it.next(); if (o instanceof ICompilationUnit) { ICompilationUnit cu = (ICompilationUnit) o; try { IResource r = cu.getCorrespondingResource(); if (r instanceof IFile) files.add((IFile) r); } catch (JavaModelException e) { PetalsCommonPlugin.log(e, IStatus.ERROR); } } else if (o instanceof IFile) files.add((IFile) o); } IFile[] result = new IFile[files.size()]; return files.toArray(result); } /** * Return the class file resources associated with the given elements. * <p>It is assumed the java projects have already been compiled and the resources are all in a saved state.</p> * * @param elements * @return */ public static Collection<IFile> getCorrespondingSources(Collection<IJavaElement> elements) { IRegion region = JavaCore.newRegion(); for (IJavaElement element : elements) region.add(element); IResource[] resources = JavaCore.getGeneratedResources(region, false); Set<IFile> classes = new HashSet<IFile>(resources.length); for (IResource resource : resources) { if (resource instanceof IFile) classes.add((IFile) resource); } return classes; } /** * @return the jarDescription its location must be set by the class that calls this method. */ public JarPackageData getJarDescription() { return this.jarDescription; } /** * @param selectedProject the selectedProject to set */ public void setSelectedJavaProject(IJavaProject selectedProject) { this.selectedProject = selectedProject; if (this.javaSelectionViewer != null) { this.javaSelectionViewer.refresh(); if (selectedProject != null) { this.javaSelectionViewer.expandTreeToLevel(selectedProject, 1); this.javaSelectionViewer.setTreeSelection(new StructuredSelection(selectedProject)); } } } }