| /******************************************************************************* |
| * Copyright (c) 2000, 2007 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.ui; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.core.runtime.ListenerList; |
| |
| import org.eclipse.swt.graphics.Image; |
| |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.jface.viewers.IDecoration; |
| import org.eclipse.jface.viewers.ILabelDecorator; |
| import org.eclipse.jface.viewers.ILabelProviderListener; |
| import org.eclipse.jface.viewers.ILightweightLabelDecorator; |
| import org.eclipse.jface.viewers.LabelProviderChangedEvent; |
| |
| import org.eclipse.jdt.core.ElementChangedEvent; |
| import org.eclipse.jdt.core.Flags; |
| import org.eclipse.jdt.core.IClassFile; |
| import org.eclipse.jdt.core.ICompilationUnit; |
| import org.eclipse.jdt.core.IElementChangedListener; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IJavaElementDelta; |
| import org.eclipse.jdt.core.IType; |
| import org.eclipse.jdt.core.ITypeRoot; |
| 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.SearchPattern; |
| import org.eclipse.jdt.core.search.TypeNameRequestor; |
| |
| import org.eclipse.jdt.internal.corext.util.JavaModelUtil; |
| |
| public class InterfaceIndicatorLabelDecorator implements ILabelDecorator, ILightweightLabelDecorator { |
| |
| private class IntefaceIndicatorChangeListener implements IElementChangedListener { |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void elementChanged(ElementChangedEvent event) { |
| List changed= new ArrayList(); |
| processDelta(event.getDelta(), changed); |
| if (changed.size() == 0) |
| return; |
| |
| fireChange((IJavaElement[])changed.toArray(new IJavaElement[changed.size()])); |
| } |
| |
| } |
| |
| private ListenerList fListeners; |
| private IElementChangedListener fChangeListener; |
| |
| public InterfaceIndicatorLabelDecorator() { |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public Image decorateImage(Image image, Object element) { |
| return null; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public String decorateText(String text, Object element) { |
| return text; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void addListener(ILabelProviderListener listener) { |
| if (fChangeListener == null) { |
| fChangeListener= new IntefaceIndicatorChangeListener(); |
| JavaCore.addElementChangedListener(fChangeListener); |
| } |
| |
| if (fListeners == null) { |
| fListeners= new ListenerList(); |
| } |
| |
| fListeners.add(listener); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void dispose() { |
| if (fChangeListener != null) { |
| JavaCore.removeElementChangedListener(fChangeListener); |
| fChangeListener= null; |
| } |
| if (fListeners != null) { |
| Object[] listeners= fListeners.getListeners(); |
| for (int i= 0; i < listeners.length; i++) { |
| fListeners.remove(listeners[i]); |
| } |
| fListeners= null; |
| } |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public boolean isLabelProperty(Object element, String property) { |
| return false; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void removeListener(ILabelProviderListener listener) { |
| if (fListeners == null) |
| return; |
| |
| fListeners.remove(listener); |
| |
| if (fListeners.isEmpty() && fChangeListener != null) { |
| JavaCore.removeElementChangedListener(fChangeListener); |
| fChangeListener= null; |
| } |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void decorate(Object element, IDecoration decoration) { |
| try { |
| ImageDescriptor overlay= getOverlay(element); |
| if (overlay == null) |
| return; |
| |
| decoration.addOverlay(overlay, IDecoration.TOP_RIGHT); |
| } catch (JavaModelException e) { |
| return; |
| } |
| } |
| |
| private ImageDescriptor getOverlay(Object element) throws JavaModelException { |
| if (element instanceof ICompilationUnit) { |
| ICompilationUnit unit= (ICompilationUnit) element; |
| if (unit.isOpen()) { |
| IType mainType= unit.findPrimaryType(); |
| if (mainType != null) { |
| return getOverlayFromFlags(mainType.getFlags()); |
| } |
| return null; |
| } |
| String typeName= JavaCore.removeJavaLikeExtension(unit.getElementName()); |
| return getOverlayWithSearchEngine(unit, typeName); |
| } else if (element instanceof IClassFile) { |
| IClassFile classFile= (IClassFile) element; |
| if (classFile.isOpen()) { |
| return getOverlayFromFlags(classFile.getType().getFlags()); |
| } |
| String typeName= classFile.getType().getElementName(); |
| return getOverlayWithSearchEngine(classFile, typeName); |
| } |
| return null; |
| } |
| |
| private ImageDescriptor getOverlayWithSearchEngine(ITypeRoot element, String typeName) { |
| SearchEngine engine= new SearchEngine(); |
| IJavaSearchScope scope= SearchEngine.createJavaSearchScope(new IJavaElement[] { element }); |
| |
| class Result extends RuntimeException { |
| private static final long serialVersionUID= 1L; |
| int modifiers; |
| public Result(int modifiers) { |
| this.modifiers= modifiers; |
| } |
| } |
| |
| TypeNameRequestor requestor= new TypeNameRequestor() { |
| public void acceptType(int modifiers, char[] packageName, char[] simpleTypeName, char[][] enclosingTypeNames, String path) { |
| if (enclosingTypeNames.length == 0 && Flags.isPublic(modifiers)) { |
| throw new Result(modifiers); |
| } |
| } |
| }; |
| |
| try { |
| String packName = element.getParent().getElementName(); |
| int matchRule = SearchPattern.R_EXACT_MATCH | SearchPattern.R_CASE_SENSITIVE; |
| engine.searchAllTypeNames(packName.toCharArray(), matchRule, typeName.toCharArray(), matchRule, IJavaSearchConstants.TYPE, scope, requestor, IJavaSearchConstants.WAIT_UNTIL_READY_TO_SEARCH , null); |
| } catch (Result e) { |
| return getOverlayFromFlags(e.modifiers); |
| } catch (JavaModelException e) { |
| JavaPlugin.log(e); |
| } |
| return null; |
| |
| } |
| |
| private ImageDescriptor getOverlayFromFlags(int flags) { |
| if (Flags.isAnnotation(flags)) { |
| return JavaPluginImages.DESC_OVR_ANNOTATION; |
| } else if (Flags.isEnum(flags)) { |
| return JavaPluginImages.DESC_OVR_ENUM; |
| } else if (Flags.isInterface(flags)) { |
| return JavaPluginImages.DESC_OVR_INTERFACE; |
| } else if (/* is class */ Flags.isAbstract(flags)) { |
| return JavaPluginImages.DESC_OVR_ABSTRACT_CLASS; |
| } |
| return null; |
| } |
| |
| private void fireChange(IJavaElement[] elements) { |
| if (fListeners != null && !fListeners.isEmpty()) { |
| LabelProviderChangedEvent event= new LabelProviderChangedEvent(this, elements); |
| Object[] listeners= fListeners.getListeners(); |
| for (int i= 0; i < listeners.length; i++) { |
| ((ILabelProviderListener) listeners[i]).labelProviderChanged(event); |
| } |
| } |
| } |
| |
| private void processDelta(IJavaElementDelta delta, List result) { |
| IJavaElement elem= delta.getElement(); |
| |
| boolean isChanged= delta.getKind() == IJavaElementDelta.CHANGED; |
| boolean isRemoved= delta.getKind() == IJavaElementDelta.REMOVED; |
| int flags= delta.getFlags(); |
| |
| switch (elem.getElementType()) { |
| case IJavaElement.JAVA_PROJECT: |
| if (isRemoved || (isChanged && |
| (flags & IJavaElementDelta.F_CLOSED) != 0)) { |
| return; |
| } |
| processChildrenDelta(delta, result); |
| return; |
| case IJavaElement.PACKAGE_FRAGMENT_ROOT: |
| if (isRemoved || (isChanged && ( |
| (flags & IJavaElementDelta.F_ARCHIVE_CONTENT_CHANGED) != 0 || |
| (flags & IJavaElementDelta.F_REMOVED_FROM_CLASSPATH) != 0))) { |
| return; |
| } |
| processChildrenDelta(delta, result); |
| return; |
| case IJavaElement.PACKAGE_FRAGMENT: |
| if (isRemoved) |
| return; |
| processChildrenDelta(delta, result); |
| return; |
| case IJavaElement.TYPE: |
| case IJavaElement.CLASS_FILE: |
| return; |
| case IJavaElement.JAVA_MODEL: |
| processChildrenDelta(delta, result); |
| return; |
| case IJavaElement.COMPILATION_UNIT: |
| // Not the primary compilation unit. Ignore it |
| if (!JavaModelUtil.isPrimary((ICompilationUnit) elem)) { |
| return; |
| } |
| |
| if (isChanged && ((flags & IJavaElementDelta.F_CONTENT) != 0 || (flags & IJavaElementDelta.F_FINE_GRAINED) != 0)) { |
| if (delta.getAffectedChildren().length == 0) |
| return; |
| |
| result.add(elem); |
| } |
| return; |
| default: |
| // fields, methods, imports ect |
| return; |
| } |
| } |
| |
| private boolean processChildrenDelta(IJavaElementDelta delta, List result) { |
| IJavaElementDelta[] children= delta.getAffectedChildren(); |
| for (int i= 0; i < children.length; i++) { |
| processDelta(children[i], result); |
| } |
| return false; |
| } |
| |
| } |