Java tutorial
/******************************************************************************* * Copyright (c) 2009, 2012 SpringSource, a divison of VMware, Inc. * 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: * SpringSource, a division of VMware, Inc. - initial API and implementation *******************************************************************************/ package org.eclipse.virgo.ide.jdt.internal.ui.properties; import java.util.ArrayList; import java.util.HashSet; import java.util.List; import java.util.Set; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IResource; import org.eclipse.core.runtime.NullProgressMonitor; import org.eclipse.jdt.core.IClasspathAttribute; import org.eclipse.jdt.core.IClasspathEntry; import org.eclipse.jdt.core.JavaCore; import org.eclipse.jdt.core.JavaModelException; import org.eclipse.jdt.ui.ISharedImages; import org.eclipse.jdt.ui.JavaUI; import org.eclipse.jface.viewers.CheckStateChangedEvent; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.ICheckStateListener; import org.eclipse.jface.viewers.ILabelProvider; import org.eclipse.jface.viewers.ILabelProviderListener; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerComparator; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.FontData; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.ui.dialogs.PropertyPage; import org.eclipse.ui.internal.dialogs.DialogUtil; import org.eclipse.virgo.ide.module.core.ServerModuleDelegate; /** * {@link PropertyPage} implementation that enables the user to configure java source folders that are pure test * folders. * * @author Christian Dupuis * @since 1.0.1 */ @SuppressWarnings("restriction") public class TestSourceFolderPreferencePage extends PropertyPage { private IProject project; private boolean modified = false; private CheckboxTableViewer listViewer; private static final int PROJECT_LIST_MULTIPLIER = 30; protected Control createContents(Composite parent) { Font font = parent.getFont(); Composite composite = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(); composite.setLayout(layout); composite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); composite.setFont(font); initialize(); Label description = createDescriptionLabel(composite); description.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false)); listViewer = CheckboxTableViewer.newCheckList(composite, SWT.TOP | SWT.BORDER); listViewer.getTable().setFont(font); GridData data = new GridData(GridData.FILL_BOTH); data.grabExcessHorizontalSpace = true; if (project != null && !project.isOpen()) listViewer.getControl().setEnabled(false); // Only set a height hint if it will not result in a cut off dialog if (DialogUtil.inRegularFontMode(parent)) { data.heightHint = getDefaultFontHeight(listViewer.getTable(), PROJECT_LIST_MULTIPLIER); } listViewer.getTable().setLayoutData(data); listViewer.getTable().setFont(font); listViewer.setLabelProvider(new ClasspathEntryLabelProvider()); listViewer.setContentProvider(new ClasspathEntryContentProvider()); listViewer.setComparator(new ViewerComparator()); listViewer.setInput(project); listViewer.setCheckedElements(ServerModuleDelegate.getSourceClasspathEntries(project, true).toArray()); // check for initial modification to avoid work if no changes are made listViewer.addCheckStateListener(new ICheckStateListener() { public void checkStateChanged(CheckStateChangedEvent event) { modified = true; } }); return composite; } private static int getDefaultFontHeight(Control control, int lines) { FontData[] viewerFontData = control.getFont().getFontData(); int fontHeight = 10; // If we have no font data use our guess if (viewerFontData.length > 0) { fontHeight = viewerFontData[0].getHeight(); } return lines * fontHeight; } private void initialize() { project = (IProject) getElement().getAdapter(IResource.class); noDefaultAndApplyButton(); setDescription( "Select Java source folders that contain unit and integration test classes.\nThe contents of those test folders will not get deployed to any server runtime."); } public boolean performOk() { if (!modified) { return true; } try { List<IClasspathEntry> entries = new ArrayList<IClasspathEntry>(); for (IClasspathEntry entry : JavaCore.create(project).getRawClasspath()) { if (entry.getEntryKind() == IClasspathEntry.CPE_SOURCE) { Set<IClasspathAttribute> attrs = new HashSet<IClasspathAttribute>(); for (IClasspathAttribute attr : entry.getExtraAttributes()) { if (!attr.getName().equals(ServerModuleDelegate.TEST_CLASSPATH_ENTRY_ATTRIBUTE)) { attrs.add(attr); } } attrs.add(getClasspathAttribute(entry)); entries.add(JavaCore.newSourceEntry(entry.getPath(), entry.getInclusionPatterns(), entry.getExclusionPatterns(), entry.getOutputLocation(), (IClasspathAttribute[]) attrs.toArray(new IClasspathAttribute[attrs.size()]))); } else { entries.add(entry); } } JavaCore.create(project).setRawClasspath( (IClasspathEntry[]) entries.toArray(new IClasspathEntry[entries.size()]), new NullProgressMonitor()); } catch (JavaModelException e) { } return true; } private IClasspathAttribute getClasspathAttribute(IClasspathEntry entry) { IClasspathAttribute testFolderAttribute = JavaCore .newClasspathAttribute(ServerModuleDelegate.TEST_CLASSPATH_ENTRY_ATTRIBUTE, "true"); //$NON-NLS-1$ IClasspathAttribute sourceFolderAttribute = JavaCore .newClasspathAttribute(ServerModuleDelegate.TEST_CLASSPATH_ENTRY_ATTRIBUTE, "false"); //$NON-NLS-1$ Object[] testFolders = listViewer.getCheckedElements(); for (Object testFolder : testFolders) { if (((IClasspathEntry) testFolder).getPath().equals(entry.getPath())) { return testFolderAttribute; } } return sourceFolderAttribute; } class ClasspathEntryLabelProvider implements ILabelProvider { public Image getImage(Object element) { return JavaUI.getSharedImages().getImage(ISharedImages.IMG_OBJS_PACKFRAG_ROOT); } public String getText(Object element) { return ((IClasspathEntry) element).getPath().toString().substring(1); } public void addListener(ILabelProviderListener listener) { // nothing to do } public void dispose() { // nothing to do } public boolean isLabelProperty(Object element, String property) { // nothing to do return false; } public void removeListener(ILabelProviderListener listener) { // nothing to do } } class ClasspathEntryContentProvider implements IStructuredContentProvider { public Object[] getElements(Object inputElement) { if (inputElement instanceof IProject) { List<IClasspathEntry> sourceFolders = new ArrayList<IClasspathEntry>(); try { for (IClasspathEntry entry : JavaCore.create(project).getRawClasspath()) { if (entry.getEntryKind() == IClasspathEntry.CPE_SOURCE) { sourceFolders.add(entry); } } return sourceFolders.toArray(new IClasspathEntry[sourceFolders.size()]); } catch (JavaModelException e) { } } return new Object[0]; } public void dispose() { // nothing to do } public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { // nothing to do } } }