Java tutorial
/******************************************************************************* * Copyright (c) 2013 GoPivotal, 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: * GoPivotal, Inc. - initial API and implementation *******************************************************************************/ package org.springframework.ide.eclipse.quickfix.hyperlinks; import java.util.HashSet; import java.util.List; import java.util.Set; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IResource; import org.eclipse.jdt.core.IField; import org.eclipse.jdt.core.IJavaElement; import org.eclipse.jdt.core.ILocalVariable; import org.eclipse.jdt.core.IMethod; import org.eclipse.jdt.core.IType; import org.eclipse.jdt.core.JavaModelException; import org.eclipse.jdt.core.Signature; import org.eclipse.jdt.internal.ui.javaeditor.JavaEditor; import org.eclipse.jdt.internal.ui.javaeditor.JavaElementHyperlinkDetector; import org.eclipse.jdt.ui.actions.SelectionDispatchAction; import org.eclipse.jface.text.IRegion; import org.eclipse.jface.text.hyperlink.IHyperlink; import org.springframework.ide.eclipse.beans.core.BeansCorePlugin; import org.springframework.ide.eclipse.beans.core.autowire.internal.provider.AutowireDependencyProvider; import org.springframework.ide.eclipse.beans.core.model.IBean; import org.springframework.ide.eclipse.beans.core.model.IBeansConfig; import org.springframework.ide.eclipse.beans.core.model.IBeansModel; import org.springframework.ide.eclipse.beans.core.model.IBeansProject; import org.springframework.ide.eclipse.core.java.IProjectClassLoaderSupport; import org.springframework.ide.eclipse.core.java.IProjectClassLoaderSupport.IProjectClassLoaderAwareCallback; import org.springframework.ide.eclipse.core.java.JdtUtils; import org.springsource.ide.eclipse.commons.core.StatusHandler; /** * @author Terry Denney * @since 3.3.0 */ public class AutowireHyperlinkDetector extends JavaElementHyperlinkDetector { @Override protected void addHyperlinks(List<IHyperlink> hyperlinksCollector, final IRegion wordRegion, SelectionDispatchAction openAction, IJavaElement element, boolean qualify, JavaEditor editor) { if (element instanceof ILocalVariable) { ILocalVariable localVariable = (ILocalVariable) element; IJavaElement parent = localVariable.getParent(); if (parent instanceof IMethod) { IMethod parentMethod = (IMethod) parent; if (parentMethod.getAnnotation("Autowired") != null) { String typeSignature = localVariable.getTypeSignature(); addHyperlinksHelper(typeSignature, localVariable, hyperlinksCollector); } } } else if (element instanceof IField) { IField field = (IField) element; if (field.getAnnotation("Autowired") != null) { try { String typeSignature = field.getTypeSignature(); addHyperlinksHelper(typeSignature, field, hyperlinksCollector); } catch (JavaModelException e) { StatusHandler.log(e.getStatus()); } } } } private void addHyperlinksHelper(String typeSignature, IJavaElement element, List<IHyperlink> hyperlinksCollector) { String typeName = Signature.toString(typeSignature); try { IType type = getParentType(element); if (type != null) { String[][] qualifiedTypeNames = type.resolveType(typeName); if (qualifiedTypeNames != null) { for (String[] typeNameSegments : qualifiedTypeNames) { StringBuilder qualifiedTypeName = new StringBuilder(); for (String typeNameSegment : typeNameSegments) { if (qualifiedTypeName.length() > 0) { qualifiedTypeName.append("."); } qualifiedTypeName.append(typeNameSegment); } addHyperlinksHelper(qualifiedTypeName.toString(), element.getJavaProject().getProject(), hyperlinksCollector); } } } } catch (JavaModelException e) { StatusHandler.log(e.getStatus()); } } private void addHyperlinksHelper(final String typeName, final IProject project, final List<IHyperlink> hyperlinksCollector) { IBeansModel model = BeansCorePlugin.getModel(); IBeansProject springProject = model.getProject(project); if (springProject == null) { return; } Set<IBeansConfig> configs = springProject.getConfigs(); Set<AutowireBeanHyperlink> hyperlinks = new HashSet<AutowireBeanHyperlink>(); for (IBeansConfig config : configs) { addHyperlinksHelper(config, typeName, project, hyperlinks); } if (hyperlinks.size() == 1) { hyperlinks.iterator().next().setIsOnlyCandidate(true); } hyperlinksCollector.addAll(hyperlinks); } // public for testing public void addHyperlinksHelper(IBeansConfig config, final String typeName, final IProject project, final Set<AutowireBeanHyperlink> hyperlinks) { final AutowireDependencyProvider autowireDependencyProvider = new AutowireDependencyProvider(config, config); final String[][] beanNamesWrapper = new String[1][]; try { IProjectClassLoaderSupport classLoaderSupport = JdtUtils .getProjectClassLoaderSupport(project.getProject(), null); autowireDependencyProvider.setProjectClassLoaderSupport(classLoaderSupport); classLoaderSupport.executeCallback(new IProjectClassLoaderAwareCallback() { public void doWithActiveProjectClassLoader() throws Throwable { autowireDependencyProvider.preloadClasses(); beanNamesWrapper[0] = autowireDependencyProvider.getBeansForType(typeName); } }); } catch (Throwable e) { BeansCorePlugin.log(e); } String[] beanNames = beanNamesWrapper[0]; for (final String beanName : beanNames) { IBean bean = autowireDependencyProvider.getBean(beanName); final IResource resource = bean.getElementResource(); final int line = bean.getElementStartLine(); if (resource instanceof IFile) { AutowireBeanHyperlink newHyperlink = new AutowireBeanHyperlink((IFile) resource, line, beanName); boolean found = false; for (AutowireBeanHyperlink hyperlink : hyperlinks) { if (resource.equals(hyperlink.getFile()) && line == hyperlink.getLine()) { if (!beanName.equals(hyperlink.getBeanName())) { hyperlink.setShowFileName(true); hyperlinks.add(newHyperlink); newHyperlink.setShowFileName(true); break; } found = true; } } if (!found) { hyperlinks.add(newHyperlink); } } } } private IType getParentType(IJavaElement element) { if (element == null) { return null; } if (element instanceof IType) { return (IType) element; } return getParentType(element.getParent()); } }