| /******************************************************************************* |
| * Copyright (c) 2004, 2012 Tasktop Technologies and others. |
| * 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: |
| * Tasktop Technologies - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.mylyn.internal.java.ui; |
| |
| import java.lang.reflect.Method; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.eclipse.core.internal.resources.Marker; |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IMarker; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.jdt.core.IClassFile; |
| import org.eclipse.jdt.core.ICompilationUnit; |
| import org.eclipse.jdt.core.IImportDeclaration; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IJavaProject; |
| import org.eclipse.jdt.core.IMember; |
| import org.eclipse.jdt.core.IPackageFragment; |
| import org.eclipse.jdt.core.IParent; |
| import org.eclipse.jdt.core.ISourceReference; |
| import org.eclipse.jdt.core.IType; |
| import org.eclipse.jdt.core.JavaCore; |
| import org.eclipse.jdt.core.JavaModelException; |
| import org.eclipse.jdt.internal.core.JarEntryFile; |
| import org.eclipse.jdt.internal.core.JarPackageFragmentRoot; |
| import org.eclipse.jdt.internal.ui.packageview.ClassPathContainer; |
| import org.eclipse.jdt.internal.ui.packageview.PackageFragmentRootContainer; |
| import org.eclipse.jdt.internal.ui.util.ExceptionHandler; |
| import org.eclipse.mylyn.commons.core.StatusHandler; |
| import org.eclipse.mylyn.context.core.AbstractContextStructureBridge; |
| import org.eclipse.mylyn.context.core.ContextCore; |
| import org.eclipse.mylyn.context.core.IInteractionElement; |
| import org.eclipse.ui.views.markers.internal.ConcreteMarker; |
| |
| /** |
| * @author Mik Kersten |
| */ |
| public class JavaStructureBridge extends AbstractContextStructureBridge { |
| |
| public final static String CONTENT_TYPE = "java"; //$NON-NLS-1$ |
| |
| @Override |
| public String getContentType() { |
| return CONTENT_TYPE; |
| } |
| |
| @Override |
| public Object getAdaptedParent(Object object) { |
| if (object instanceof IFile) { |
| IFile file = (IFile) object; |
| return JavaCore.create(file.getParent()); |
| } else { |
| return super.getAdaptedParent(object); |
| } |
| } |
| |
| @Override |
| public String getParentHandle(String handle) { |
| IJavaElement javaElement = (IJavaElement) getObjectForHandle(handle); |
| if (javaElement != null && javaElement.getParent() != null) { |
| return getHandleIdentifier(javaElement.getParent()); |
| } else { |
| return null; |
| } |
| } |
| |
| @Override |
| public List<String> getChildHandles(String handle) { |
| Object object = getObjectForHandle(handle); |
| if (object instanceof IJavaElement) { |
| IJavaElement element = (IJavaElement) object; |
| if (element instanceof IParent) { |
| IParent parent = (IParent) element; |
| IJavaElement[] children; |
| try { |
| children = parent.getChildren(); |
| List<String> childHandles = new ArrayList<String>(); |
| for (IJavaElement element2 : children) { |
| String childHandle = getHandleIdentifier(element2); |
| if (childHandle != null) { |
| childHandles.add(childHandle); |
| } |
| } |
| AbstractContextStructureBridge parentBridge = ContextCore.getStructureBridge(parentContentType); |
| if (parentBridge != null && ContextCore.CONTENT_TYPE_RESOURCE.equals(parentBridge.getContentType())) { |
| if (element.getElementType() < IJavaElement.TYPE) { |
| List<String> resourceChildren = parentBridge.getChildHandles(handle); |
| if (!resourceChildren.isEmpty()) { |
| childHandles.addAll(resourceChildren); |
| } |
| } |
| } |
| |
| return childHandles; |
| } catch (JavaModelException e) { |
| // NOTE: it would be better if this was not hard-wired but used the parent/child bridge mapping |
| AbstractContextStructureBridge parentBridge = ContextCore.getStructureBridge(ContextCore.CONTENT_TYPE_RESOURCE); |
| return parentBridge.getChildHandles(handle); |
| } catch (Exception e) { |
| StatusHandler.log(new Status(IStatus.ERROR, JavaUiBridgePlugin.ID_PLUGIN, "Could not get children", //$NON-NLS-1$ |
| e)); |
| } |
| } |
| } |
| return Collections.emptyList(); |
| } |
| |
| @Override |
| public Object getObjectForHandle(String handle) { |
| try { |
| return JavaCore.create(handle); |
| } catch (Throwable t) { |
| StatusHandler.log(new Status(IStatus.WARNING, JavaUiBridgePlugin.ID_PLUGIN, |
| "Could not create java element for handle: " + handle, t)); //$NON-NLS-1$ |
| return null; |
| } |
| } |
| |
| /** |
| * Uses resource-compatible path for projects |
| */ |
| @Override |
| public String getHandleIdentifier(Object object) { |
| if (object instanceof IJavaElement) { |
| return ((IJavaElement) object).getHandleIdentifier(); |
| } else { |
| if (object instanceof IAdaptable) { |
| Object adapter = ((IAdaptable) object).getAdapter(IJavaElement.class); |
| if (adapter instanceof IJavaElement) { |
| return ((IJavaElement) adapter).getHandleIdentifier(); |
| } |
| } else if (isWtpClass(object)) { |
| return getWtpElementHandle(object); |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * TODO: remove after WTP 1.5.1 is generally available |
| */ |
| private String getWtpElementHandle(Object object) { |
| Class<?> objectClass = object.getClass(); |
| try { |
| Method getProjectMethod = objectClass.getMethod("getProject", new Class[0]); //$NON-NLS-1$ |
| Object javaProject = getProjectMethod.invoke(object, new Object[0]); |
| if (javaProject instanceof IJavaProject) { |
| return ((IJavaElement) javaProject).getHandleIdentifier(); |
| } |
| } catch (Exception e) { |
| // ignore |
| e.printStackTrace(); |
| } |
| return null; |
| } |
| |
| private boolean isWtpClass(Object object) { |
| try { |
| return object != null && object.getClass().getSimpleName().equals("CompressedJavaProject"); //$NON-NLS-1$ |
| } catch (Throwable t) { |
| // could have malformed name, see bug 165065 |
| return false; |
| } |
| } |
| |
| @Override |
| public String getLabel(Object object) { |
| if (object instanceof IJavaElement) { |
| return ((IJavaElement) object).getElementName(); |
| } else { |
| return ""; //$NON-NLS-1$ |
| } |
| } |
| |
| @Override |
| public boolean canBeLandmark(String handle) { |
| IJavaElement element = (IJavaElement) getObjectForHandle(handle); |
| if ((element instanceof IMember || element instanceof IType) && element.exists()) { |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| /** |
| * TODO: figure out if the non IJavaElement stuff is needed |
| */ |
| @Override |
| public boolean acceptsObject(Object object) { |
| if (object instanceof IResource) { |
| Object adapter = ((IResource) object).getAdapter(IJavaElement.class); |
| return adapter instanceof IJavaElement; |
| } |
| |
| boolean accepts = object instanceof IJavaElement || object instanceof PackageFragmentRootContainer |
| || object instanceof ClassPathContainer.RequiredProjectWrapper || object instanceof JarEntryFile |
| || object instanceof IPackageFragment || isWtpClass(object); |
| |
| return accepts; |
| } |
| |
| /** |
| * Uses special rules for classpath containers since these do not have an associated interest, i.e. they're not |
| * IJavaElement(s). |
| */ |
| @Override |
| public boolean canFilter(Object object) { |
| if (object instanceof ClassPathContainer.RequiredProjectWrapper) { |
| return true; |
| } else if (object instanceof PackageFragmentRootContainer) { |
| // since not in model, check if it contains anything interesting |
| PackageFragmentRootContainer container = (PackageFragmentRootContainer) object; |
| |
| Object[] children = container.getChildren(); |
| for (Object element2 : children) { |
| if (element2 instanceof JarPackageFragmentRoot) { |
| JarPackageFragmentRoot element = (JarPackageFragmentRoot) element2; |
| IInteractionElement node = ContextCore.getContextManager() |
| .getElement(element.getHandleIdentifier()); |
| if (node != null && node.getInterest().isInteresting()) { |
| return false; |
| } |
| } |
| } |
| } |
| return true; |
| } |
| |
| @Override |
| public boolean isDocument(String handle) { |
| IJavaElement element = (IJavaElement) getObjectForHandle(handle); |
| return element instanceof ICompilationUnit || element instanceof IClassFile; |
| } |
| |
| @Override |
| public String getHandleForOffsetInObject(Object object, int offset) { |
| IMarker marker; |
| if (object instanceof ConcreteMarker) { |
| marker = ((ConcreteMarker) object).getMarker(); |
| } else if (object instanceof Marker) { |
| marker = (Marker) object; |
| } else { |
| return null; |
| } |
| |
| try { |
| ICompilationUnit compilationUnit = null; |
| IResource resource = marker.getResource(); |
| if (resource instanceof IFile) { |
| IFile file = (IFile) resource; |
| // TODO: get rid of file extension check |
| if (file.getFileExtension().equals("java")) { //$NON-NLS-1$ |
| compilationUnit = JavaCore.createCompilationUnitFrom(file); |
| } else { |
| return null; |
| } |
| } |
| if (compilationUnit != null) { |
| // first try to resolve the character start, then the line number if not present |
| int charStart = 0; |
| Object attribute = marker.getAttribute(IMarker.CHAR_START, 0); |
| if (attribute instanceof Integer) { |
| charStart = ((Integer) attribute).intValue(); |
| } |
| IJavaElement javaElement = null; |
| if (charStart != -1) { |
| javaElement = compilationUnit.getElementAt(charStart); |
| } else { |
| int lineNumber = 0; |
| Object lineNumberAttribute = marker.getAttribute(IMarker.LINE_NUMBER, 0); |
| if (lineNumberAttribute instanceof Integer) { |
| lineNumber = ((Integer) lineNumberAttribute).intValue(); |
| } |
| if (lineNumber != -1) { |
| // could do finer granularity by uncommenting what's below, see bug 132092 |
| // Document document = new Document(compilationUnit.getSource()); |
| // IRegion region = document.getLineInformation(lineNumber); |
| // javaElement = compilationUnit.getElementAt(region.getOffset()); |
| javaElement = compilationUnit; |
| } |
| } |
| |
| if (javaElement != null) { |
| if (javaElement instanceof IImportDeclaration) { |
| javaElement = javaElement.getParent().getParent(); |
| } |
| return javaElement.getHandleIdentifier(); |
| } else { |
| return null; |
| } |
| } else { |
| return null; |
| } |
| } catch (JavaModelException ex) { |
| if (!ex.isDoesNotExist()) { |
| ExceptionHandler.handle(ex, "error", "could not find java element"); //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| return null; |
| } catch (Throwable t) { |
| StatusHandler.log(new Status(IStatus.ERROR, JavaUiBridgePlugin.ID_PLUGIN, "Could not find element for: " //$NON-NLS-1$ |
| + marker, t)); |
| return null; |
| } |
| } |
| |
| @Override |
| public String getContentType(String elementHandle) { |
| return getContentType(); |
| } |
| |
| /** |
| * Some copying from: |
| * |
| * @see org.eclipse.jdt.ui.ProblemsLabelDecorator |
| */ |
| public boolean containsProblem(IInteractionElement node) { |
| try { |
| IJavaElement element = (IJavaElement) getObjectForHandle(node.getHandleIdentifier()); |
| switch (element.getElementType()) { |
| case IJavaElement.JAVA_PROJECT: |
| case IJavaElement.PACKAGE_FRAGMENT_ROOT: |
| return getErrorTicksFromMarkers(element.getResource(), IResource.DEPTH_INFINITE, null); |
| case IJavaElement.PACKAGE_FRAGMENT: |
| case IJavaElement.COMPILATION_UNIT: |
| case IJavaElement.CLASS_FILE: |
| return getErrorTicksFromMarkers(element.getResource(), IResource.DEPTH_ONE, null); |
| case IJavaElement.PACKAGE_DECLARATION: |
| case IJavaElement.IMPORT_DECLARATION: |
| case IJavaElement.IMPORT_CONTAINER: |
| case IJavaElement.TYPE: |
| case IJavaElement.INITIALIZER: |
| case IJavaElement.METHOD: |
| case IJavaElement.FIELD: |
| case IJavaElement.LOCAL_VARIABLE: |
| ICompilationUnit cu = (ICompilationUnit) element.getAncestor(IJavaElement.COMPILATION_UNIT); |
| if (cu != null) { |
| return getErrorTicksFromMarkers(element.getResource(), IResource.DEPTH_ONE, null); |
| } |
| } |
| } catch (CoreException e) { |
| // ignore |
| } |
| return false; |
| } |
| |
| private boolean getErrorTicksFromMarkers(IResource res, int depth, ISourceReference sourceElement) |
| throws CoreException { |
| if (res == null || !res.isAccessible()) { |
| return false; |
| } |
| IMarker[] markers = res.findMarkers(IMarker.PROBLEM, true, depth); |
| if (markers != null) { |
| for (IMarker curr : markers) { |
| if (sourceElement == null) { |
| int priority = curr.getAttribute(IMarker.SEVERITY, -1); |
| if (priority == IMarker.SEVERITY_ERROR) { |
| return true; |
| } |
| } |
| } |
| } |
| return false; |
| } |
| } |
