| /******************************************************************************* |
| * Copyright (c) 2006 Sybase, Inc. 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: |
| * Sybase, Inc. - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jst.pagedesigner.utils; |
| |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.Path; |
| import org.eclipse.jdt.core.IClasspathEntry; |
| import org.eclipse.jdt.core.IJarEntryResource; |
| import org.eclipse.jdt.core.IJavaProject; |
| import org.eclipse.jst.jsf.common.ui.IFileFolderConstants; |
| import org.eclipse.jst.pagedesigner.PDPlugin; |
| |
| /** |
| * @author mengbo |
| */ |
| public class JavaUtil { |
| /** |
| * |
| * @param javaProject |
| * @param parent |
| * @return the path in javaProject or new Path("") if not found on a class path |
| * @author mengbo |
| */ |
| public static IPath getPathOnClasspath(IJavaProject javaProject, |
| Object parent) { |
| IPath result = null; |
| if (javaProject == null || parent == null) { |
| return new Path(""); //$NON-NLS-1$ |
| } |
| IClasspathEntry[] entries = javaProject.readRawClasspath(); |
| IPath classPath = null; |
| if (parent instanceof IResource) { |
| if (((javaProject != null) && !javaProject |
| .isOnClasspath((IResource) parent))) { |
| return new Path(""); //$NON-NLS-1$ |
| } |
| if (parent instanceof IFile) { |
| IPath elementPath = ((IFile) parent).getFullPath(); |
| if (((IFile) parent).getFileExtension().equalsIgnoreCase( |
| IFileFolderConstants.EXT_PROPERTIES)) { |
| int machings = 0; |
| try { |
| for (int i = 0; i < entries.length; i++) { |
| // Determine whether on this classentry's path |
| machings = entries[i].getPath() |
| .matchingFirstSegments(elementPath); |
| if (machings > 0) { |
| // Get package name |
| classPath = elementPath.removeFirstSegments( |
| machings).removeLastSegments(1); |
| break; |
| } |
| } |
| // Not on the classpath? |
| if (classPath == null) { |
| return null; |
| } else if (classPath.segmentCount() > 0) |
| result = javaProject.findElement(classPath) |
| .getPath().removeFirstSegments(machings) |
| .append(((IFile) parent).getName()); |
| else |
| result = ((IFile) parent).getFullPath() |
| .removeFirstSegments(machings); |
| } catch (Exception e) { |
| // Error.DesignerPropertyTool.NatureQuerying = Error in |
| // project java nature querying |
| PDPlugin.getLogger(JavaUtil.class).error( |
| "Error.DesignerPropertyTool.NatureQuerying", e); //$NON-NLS-1$ |
| return null; |
| } |
| } |
| } |
| } else if (parent instanceof IJarEntryResource) { |
| IPath elementPath = ((IJarEntryResource) parent).getFullPath(); |
| if (elementPath.getFileExtension().equalsIgnoreCase( |
| IFileFolderConstants.EXT_PROPERTIES)) { |
| result = elementPath; |
| } |
| } |
| if (result != null) { |
| return result; |
| } |
| return new Path(""); //$NON-NLS-1$ |
| } |
| |
| } |