Java tutorial
/******************************************************************************* * Copyright (c) 2007-2012 Red Hat, Inc. * Distributed under license by Red Hat, Inc. All rights reserved. * This program is 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: * Red Hat, Inc. - initial API and implementation ******************************************************************************/ package org.jboss.tools.common.text.ext.hyperlink; import java.text.MessageFormat; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IStorage; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IPath; import org.eclipse.core.runtime.NullProgressMonitor; import org.eclipse.jdt.core.IJavaElement; import org.eclipse.jdt.core.IJavaProject; import org.eclipse.jdt.core.IType; import org.eclipse.jdt.core.JavaCore; import org.eclipse.jdt.core.JavaModelException; import org.eclipse.jdt.core.search.IJavaSearchConstants; import org.eclipse.jdt.core.search.IJavaSearchScope; import org.eclipse.jdt.core.search.SearchEngine; import org.eclipse.jdt.core.search.SearchMatch; import org.eclipse.jdt.core.search.SearchParticipant; import org.eclipse.jdt.core.search.SearchPattern; import org.eclipse.jdt.core.search.SearchRequestor; import org.eclipse.jdt.internal.core.JarEntryFile; import org.eclipse.jdt.internal.core.JarEntryResource; import org.eclipse.jdt.internal.core.JarPackageFragmentRoot; import org.eclipse.jdt.internal.core.PackageFragment; import org.eclipse.jdt.internal.ui.javaeditor.JarEntryEditorInput; import org.eclipse.jdt.ui.JavaUI; import org.eclipse.jface.text.BadLocationException; import org.eclipse.jface.text.IRegion; import org.eclipse.ui.IEditorInput; import org.eclipse.ui.IEditorPart; import org.eclipse.ui.IStorageEditorInput; import org.eclipse.ui.IWorkbenchPage; import org.jboss.tools.common.text.ext.ExtensionsPlugin; import org.jboss.tools.common.text.ext.hyperlink.xpl.Messages; /** * @author Jeremy */ public class ClassHyperlink extends AbstractHyperlink { /** * @see com.ibm.sse.editor.AbstractHyperlink#doHyperlink(org.eclipse.jface.text.IRegion) */ protected void doHyperlink(IRegion region) { try { IJavaElement element = null; IEditorPart part = null; String className = getClassName(region); if (className != null && className.trim().length() > 0) element = searchForClass(className); if (element != null) part = JavaUI.openInEditor(element); if (part != null && element != null) JavaUI.revealInEditor(part, element); else { // could not open editor openFileFailed(); } } catch (CoreException x) { // could not open editor openFileFailed(); } } private String getClassName(IRegion region) { try { return getDocument().get(region.getOffset(), region.getLength()).trim(); } catch (BadLocationException x) { // Ignore return null; } finally { } } private IJavaElement searchForClass(IJavaProject javaProject, String className) throws JavaModelException { // Get the search pattern SearchPattern pattern = SearchPattern.createPattern(className, IJavaSearchConstants.TYPE, IJavaSearchConstants.DECLARATIONS, SearchPattern.R_EXACT_MATCH | SearchPattern.R_CASE_SENSITIVE); // Get the search scope IJavaSearchScope scope = SearchEngine.createJavaSearchScope(new IJavaElement[] { javaProject }); final List<SearchMatch> matches = new ArrayList<SearchMatch>(); // Get the search requestor SearchRequestor requestor = new SearchRequestor() { public void acceptSearchMatch(SearchMatch match) throws CoreException { matches.add(match); } }; // Search SearchEngine searchEngine = new SearchEngine(); try { searchEngine.search(pattern, new SearchParticipant[] { SearchEngine.getDefaultSearchParticipant() }, scope, requestor, null); } catch (CoreException ex) { // Ignore // ExtensionsPlugin.log(ex); } for (Iterator i = matches.iterator(); i != null && i.hasNext();) { IJavaElement element = (IJavaElement) ((SearchMatch) i.next()).getElement(); String classQualifiedName = getQualifiedClassName(element); if (className.equals(classQualifiedName)) return element; } return javaProject.findType(className, new NullProgressMonitor()); } private String getQualifiedClassName(IJavaElement element) { if (element instanceof IType) { return ((IType) element).getFullyQualifiedName('.'); } return null; } private IJavaElement searchForClass(final String className) { IJavaElement result = null; try { IFile documentFile = getFile(); IProject project = null; if (documentFile == null) { IWorkbenchPage workbenchPage = ExtensionsPlugin.getDefault().getWorkbench() .getActiveWorkbenchWindow().getActivePage(); IEditorPart activeEditorPart = workbenchPage.getActiveEditor(); IEditorInput editorInput = activeEditorPart.getEditorInput(); //added by Maksim Areshkau, fix for https://jira.jboss.org/jira/browse/JBIDE-4638 //in this code we looking for java resource if editor has been opened in resource which packed into jar file if (editorInput instanceof JarEntryEditorInput) { JarEntryEditorInput jarEntryEditorInput = (JarEntryEditorInput) editorInput; JarEntryResource jarEntryFile = (JarEntryResource) jarEntryEditorInput.getStorage(); IJavaProject parentProject = getProjectForJarResource(jarEntryFile); if (parentProject != null) { result = searchForClass(parentProject, className); } } else if (editorInput instanceof IStorageEditorInput) { IStorageEditorInput moeInput = (IStorageEditorInput) editorInput; IStorage storage = moeInput.getStorage(); if (storage instanceof JarEntryFile) { IJavaProject parentProject = getProjectForJarResource((JarEntryFile) storage); if (parentProject != null) { result = searchForClass(parentProject, className); } } IPath p = storage.getFullPath(); String s0 = p.segment(0); project = ResourcesPlugin.getWorkspace().getRoot().getProject(s0); } } else { project = documentFile.getProject(); } if (result == null && project != null && project.isOpen() && project.hasNature(JavaCore.NATURE_ID)) { IJavaProject javaProject = JavaCore.create(project); result = searchForClass(javaProject, className); } } catch (CoreException x) { ExtensionsPlugin.getPluginLog().logError("Error while looking for class " + className, x); //$NON-NLS-1$ } return result; } private IJavaProject getProjectForJarResource(JarEntryResource jarResource) { Object parent = jarResource.getParent(); while (parent instanceof JarEntryResource) { parent = ((JarEntryResource) parent).getParent(); } while (parent instanceof PackageFragment) { parent = ((PackageFragment) parent).getParent(); } if ((parent instanceof JarPackageFragmentRoot) && (((JarPackageFragmentRoot) parent).getParent() instanceof IJavaProject)) { return (IJavaProject) ((JarPackageFragmentRoot) parent).getParent(); } return null; } /* * (non-Javadoc) * * @see IHyperlink#getHyperlinkText() */ public String getHyperlinkText() { String className = getClassName(getHyperlinkRegion()); if (className == null) return MessageFormat.format(Messages.OpenA, Messages.Class); return MessageFormat.format(Messages.OpenClass, className); } }