net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/corext/refactoring/util/ResourceUtil.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2004 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpdt.internal.corext.refactoring.util;
  12
  13 import java.util.ArrayList;
  14 import java.util.List;
  15
  16 import net.sourceforge.phpdt.core.ICompilationUnit;
  17 import net.sourceforge.phpdt.core.IJavaElement;
  18 import net.sourceforge.phpdt.core.IMember;
  19 import net.sourceforge.phpdt.core.IOpenable;
  20 import net.sourceforge.phpdt.internal.corext.Assert;
  21
  22 import org.eclipse.core.resources.IFile;
  23 import org.eclipse.core.resources.IResource;
  24
  25 public class ResourceUtil {
  26
  27         private ResourceUtil(){
  28         }
  29
  30         public static IFile[] getFiles(ICompilationUnit[] cus) {
  31                 List files= new ArrayList(cus.length);
  32                 for (int i= 0; i < cus.length; i++) {
  33                         IResource resource= ResourceUtil.getResource(cus[i]);
  34                         if (resource != null && resource.getType() == IResource.FILE)
  35                                 files.add(resource);
  36                 }
  37                 return (IFile[]) files.toArray(new IFile[files.size()]);
  38         }
  39
  40         public static IFile getFile(ICompilationUnit cu) {
  41                 IResource resource= ResourceUtil.getResource(cu);
  42                 if (resource != null && resource.getType() == IResource.FILE)
  43                         return (IFile)resource;
  44                 else
  45                         return null;
  46         }
  47
  48         //----- other ------------------------------
  49
  50         /**
  51          * Finds an <code>IResource</code> for a given <code>ICompilationUnit</code>.
  52          * If the parameter is a working copy then the <code>IResource</code> for
  53          * the original element is returned.
  54          */
  55         public static IResource getResource(ICompilationUnit cu) {
  56                 return cu.getResource();
  57         }
  58
  59
  60         /**
  61          * Returns the <code>IResource</code> that the given <code>IMember</code> is defined in.
  62          * @see #getResource
  63          */
  64         public static IResource getResource(IMember member) {
  65                 Assert.isTrue(!member.isBinary());
  66                 return getResource(member.getCompilationUnit());
  67         }
  68
  69         public static IResource getResource(Object o){
  70                 if (o instanceof IResource)
  71                         return (IResource)o;
  72                 if (o instanceof IJavaElement)
  73                         return getResource((IJavaElement)o);
  74                 return null;
  75         }
  76
  77         private static IResource getResource(IJavaElement element){
  78                 if (element.getElementType() == IJavaElement.COMPILATION_UNIT)
  79                         return getResource((ICompilationUnit) element);
  80                 else if (element instanceof IOpenable)
  81                         return element.getResource();
  82                 else
  83                         return null;
  84         }
  85 }