Java tutorial
/* * Copyright 2015 * * Licensed under the Eclipse Public License version 1.0, available at * http://opensource.org/licenses/eclipse-1.0.txt */ package de.lynorics.eclipse.jangaroo.ui.wizard; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import org.eclipse.core.resources.IContainer; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.IWorkspaceRoot; import org.eclipse.core.runtime.IPath; import org.eclipse.jdt.core.IClasspathEntry; import org.eclipse.jdt.core.IJavaProject; import org.eclipse.jdt.core.IPackageFragmentRoot; import org.eclipse.jdt.core.JavaCore; import org.eclipse.jface.viewers.ISelection; 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.RowLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import com.google.common.base.Joiner; import de.lynorics.eclipse.jangaroo.ui.JangarooProjectHelper; public class NewAS3FileWizardPage extends AbstractFileWizardPage { protected String template; protected Text packageText; public NewAS3FileWizardPage(ISelection selection) { super("wizardPage", selection); } @Override public void createContent(Composite parent) { createContainerContent(parent); createPackageContent(parent); createFileContent(parent); createTemplateContent(parent); } @Override protected void createContainerContentLable(Composite parent) { Label label = new Label(parent, SWT.NULL); label.setText("Source &folder:"); } @Override protected void createFileContentLable(Composite parent) { Label label = new Label(parent, SWT.NULL); label.setText("File &name:"); } protected void createPackageContent(Composite parent) { Label label = new Label(parent, SWT.NULL); label.setText("&Package:"); packageText = new Text(parent, SWT.BORDER | SWT.SINGLE); packageText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); packageText.addModifyListener(this); new Label(parent, SWT.NULL); } protected void createTemplateContent(Composite parent) { Label label = new Label(parent, SWT.NULL); label.setText("Template:"); SelectionAdapter adapter = new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { Button b = (Button) e.widget; template = b.getText().replaceAll("&", ""); } }; Composite group = new Composite(parent, SWT.NONE); group.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); group.setLayout(new RowLayout()); createTemplateRadioButton(group, "&Simple", adapter); createTemplateRadioButton(group, "&Class", adapter).setSelection(true); createTemplateRadioButton(group, "&Interface", adapter); template = "Class"; } protected Button createTemplateRadioButton(Composite group, String name, SelectionAdapter adapter) { Button button = new Button(group, SWT.RADIO); button.setText(name); button.addSelectionListener(adapter); return button; } @Override protected void initializeFocus() { packageText.setSelection(packageText.getText().length()); packageText.setFocus(); } protected IPath computeRootPath(IResource res, Iterable<IPath> sourcePaths) { if (res.getType() == IResource.PROJECT) { Iterator<IPath> iterator = sourcePaths.iterator(); return iterator.hasNext() ? iterator.next() : null; } IPath fullPath = res.getFullPath(); for (IPath path : sourcePaths) { if (path.isPrefixOf(fullPath)) return path; } return null; } protected String computePackageName(IResource res, IResource cont) { IPath result = res.getFullPath(); if (res.getType() == IResource.FILE) result = result.removeLastSegments(0); int matchingSegments = result.matchingFirstSegments(cont.getFullPath()); result = result.removeFirstSegments(matchingSegments); return Joiner.on('.').join(result.segments()); } public static List<IPath> getProjectSourceDirectories(IProject project) { List<IPath> paths = new ArrayList<IPath>(); try { if (project.isOpen() && project.getNature(JangarooProjectHelper.NATURE_ID) != null) { IJavaProject javaProject = JavaCore.create(project); IClasspathEntry[] classpathEntries = null; classpathEntries = javaProject.getResolvedClasspath(true); for (int i = 0; i < classpathEntries.length; i++) { IClasspathEntry entry = classpathEntries[i]; if (entry.getContentKind() == IPackageFragmentRoot.K_SOURCE) { paths.add(entry.getPath()); } } } } catch (Exception e) { e.printStackTrace(); } return paths; } @Override protected void initializeWithSelection(IResource resource) { Iterable<IPath> sourcePaths = getProjectSourceDirectories(resource.getProject()); IPath rootPath = computeRootPath(resource, sourcePaths); if (rootPath == null) return; IWorkspaceRoot wsroot = resource.getWorkspace().getRoot(); IResource cont = wsroot.findMember(rootPath); if (cont != null) { String pack = computePackageName(resource, cont); if (pack != null && pack.length() > 0) packageText.setText(pack); } else { if (resource instanceof IContainer) cont = (IContainer) resource; else cont = resource.getParent(); } containerText.setText(cont.getFullPath().toString()); } @Override protected void dialogChanged() { String fileName = getFileName(); int indexOf = fileName.indexOf('.'); if (indexOf > 0 && !fileName.matches("^[^.]+\\" + getExtension() + "$")) { updateStatus("Type name must not contain dots"); } else { super.dialogChanged(); } } public String getPackageName() { return packageText.getText(); } public IPath getPackagePath() { return getContainerPath().append(getPackageName().replace('.', '/')).addTrailingSeparator(); } @Override public IPath getFilePath() { return getPackagePath().append(getFileName()); } public String getTemplate() { return template; } @Override public String getExtension() { return ".as"; } }