case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/ResourceLocator.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2008 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package org.eclipse.jdt.internal.ui;
  12
  13 import org.eclipse.core.resources.IResource;
  14
  15 import org.eclipse.jdt.core.IJavaElement;
  16 import org.eclipse.jdt.core.JavaModelException;
  17
  18 /**
  19  * This class locates different resources
  20  * which are related to an object
  21  */
  22 public class ResourceLocator implements IResourceLocator {
  23
  24         public IResource getUnderlyingResource(Object element) throws JavaModelException {
  25                 if (element instanceof IJavaElement)
  26                         return ((IJavaElement) element).getUnderlyingResource();
  27                 else
  28                         return null;
  29         }
  30
  31         public IResource getCorrespondingResource(Object element) throws JavaModelException {
  32                 if (element instanceof IJavaElement)
  33                         return ((IJavaElement) element).getCorrespondingResource();
  34                 else
  35                         return null;
  36         }
  37
  38         public IResource getContainingResource(Object element) throws JavaModelException {
  39                 IResource resource= null;
  40                 if (element instanceof IResource)
  41                         resource= (IResource) element;
  42                 if (element instanceof IJavaElement) {
  43                         resource= ((IJavaElement) element).getResource();
  44                         if (resource == null)
  45                                 resource= ((IJavaElement) element).getJavaProject().getProject();
  46                 }
  47                 return resource;
  48         }
  49 }