| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.ui.workingsets; |
| |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.resources.IStorage; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.core.runtime.IPath; |
| |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.jface.viewers.ViewerFilter; |
| |
| import org.eclipse.ui.IWorkingSet; |
| |
| import org.eclipse.jdt.core.ICompilationUnit; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IJavaProject; |
| import org.eclipse.jdt.core.IPackageFragmentRoot; |
| import org.eclipse.jdt.internal.ui.packageview.ClassPathContainer; |
| /** |
| * Working set filter for Java viewers. |
| */ |
| public class WorkingSetFilter extends ViewerFilter { |
| private IWorkingSet fWorkingSet= null; |
| private IAdaptable[] fCachedWorkingSet= null; |
| |
| /** |
| * Returns the working set which is used by this filter. |
| * |
| * @return the working set |
| */ |
| public IWorkingSet getWorkingSet() { |
| return fWorkingSet; |
| } |
| |
| /** |
| * Sets this filter's working set. |
| * |
| * @param workingSet the working set |
| */ |
| public void setWorkingSet(IWorkingSet workingSet) { |
| fWorkingSet= workingSet; |
| } |
| |
| /* |
| * Overrides method from ViewerFilter. |
| */ |
| public boolean select(Viewer viewer, Object parentElement, Object element) { |
| if (fWorkingSet == null) |
| return true; |
| |
| if (element instanceof IJavaElement) |
| return isEnclosing((IJavaElement)element); |
| |
| if (element instanceof IResource) |
| return isEnclosing(((IResource)element).getFullPath()); |
| |
| if (element instanceof ClassPathContainer) { |
| return isEnclosing((ClassPathContainer)element); |
| } |
| |
| if (element instanceof IAdaptable) { |
| IAdaptable adaptable= (IAdaptable)element; |
| IJavaElement je= (IJavaElement)adaptable.getAdapter(IJavaElement.class); |
| if (je != null) |
| return isEnclosing(je); |
| |
| IResource resource= (IResource)adaptable.getAdapter(IResource.class); |
| if (resource != null) |
| return isEnclosing(resource.getFullPath()); |
| } |
| |
| return true; |
| } |
| |
| private boolean isEnclosing(ClassPathContainer container) { |
| // check whether the containing packagefragment root is enclosed |
| Object[] roots= container.getPackageFragmentRoots(); |
| if (roots.length > 0) |
| return isEnclosing((IPackageFragmentRoot)roots[0]); |
| return false; |
| } |
| |
| /* |
| * Overrides method from ViewerFilter |
| */ |
| public Object[] filter(Viewer viewer, Object parent, Object[] elements) { |
| Object[] result= null; |
| if (fWorkingSet != null) |
| fCachedWorkingSet= fWorkingSet.getElements(); |
| try { |
| result= super.filter(viewer, parent, elements); |
| } finally { |
| fCachedWorkingSet= null; |
| } |
| return result; |
| } |
| |
| private boolean isEnclosing(IPath elementPath) { |
| if (elementPath == null) |
| return false; |
| |
| IAdaptable[] cachedWorkingSet= fCachedWorkingSet; |
| if (cachedWorkingSet == null) |
| cachedWorkingSet= fWorkingSet.getElements(); |
| |
| int length= cachedWorkingSet.length; |
| for (int i= 0; i < length; i++) { |
| if (isEnclosing(cachedWorkingSet[i], elementPath)) |
| return true; |
| } |
| return false; |
| } |
| |
| private boolean isEnclosing(IJavaElement element) { |
| IAdaptable[] cachedWorkingSet= fCachedWorkingSet; |
| if (cachedWorkingSet == null) |
| cachedWorkingSet= fWorkingSet.getElements(); |
| |
| boolean isElementPathComputed= false; |
| IPath elementPath= null; // will be lazy computed if needed |
| |
| int length= cachedWorkingSet.length; |
| for (int i= 0; i < length; i++) { |
| IJavaElement scopeElement= (IJavaElement)cachedWorkingSet[i].getAdapter(IJavaElement.class); |
| if (scopeElement != null) { |
| // compare Java elements |
| IJavaElement searchedElement= element; |
| while (scopeElement != null && searchedElement != null) { |
| if (searchedElement.equals(scopeElement)) |
| return true; |
| else { |
| if (scopeElement.getElementType() == IJavaElement.JAVA_PROJECT && searchedElement.getElementType() == IJavaElement.PACKAGE_FRAGMENT_ROOT) { |
| IPackageFragmentRoot pkgRoot= (IPackageFragmentRoot)searchedElement; |
| if (pkgRoot.isExternal() && pkgRoot.isArchive()) { |
| if (((IJavaProject)scopeElement).isOnClasspath(searchedElement)) |
| return true; |
| } |
| } |
| searchedElement= searchedElement.getParent(); |
| if (searchedElement != null && searchedElement.getElementType() == IJavaElement.COMPILATION_UNIT) { |
| ICompilationUnit cu= (ICompilationUnit)searchedElement; |
| if (cu.isWorkingCopy()) |
| searchedElement= cu.getOriginalElement(); |
| } |
| } |
| } |
| while (scopeElement != null && element != null) { |
| if (element.equals(scopeElement)) |
| return true; |
| else |
| scopeElement= scopeElement.getParent(); |
| } |
| } else { |
| // compare resource paths |
| if (!isElementPathComputed) { |
| IResource elementResource= (IResource)element.getAdapter(IResource.class); |
| if (elementResource != null) |
| elementPath= elementResource.getFullPath(); |
| } |
| if (isEnclosing(cachedWorkingSet[i], elementPath)) |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private boolean isEnclosing(IAdaptable element, IPath path) { |
| if (path == null) |
| return false; |
| |
| IPath elementPath= null; |
| |
| IResource elementResource= (IResource)element.getAdapter(IResource.class); |
| if (elementResource != null) |
| elementPath= elementResource.getFullPath(); |
| |
| if (elementPath == null) { |
| IJavaElement javaElement= (IJavaElement)element.getAdapter(IJavaElement.class); |
| if (javaElement != null) |
| elementPath= javaElement.getPath(); |
| } |
| |
| if (elementPath == null && element instanceof IStorage) |
| elementPath= ((IStorage)element).getFullPath(); |
| |
| if (elementPath == null) |
| return false; |
| |
| if (elementPath.isPrefixOf(path)) |
| return true; |
| |
| if (path.isPrefixOf(elementPath)) |
| return true; |
| |
| return false; |
| } |
| } |