case-study/jdt-after/ui/org/eclipse/jdt/internal/ui/navigator/JavaFileLinkHelper.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
  12 package org.eclipse.jdt.internal.ui.navigator;
  13
  14 import org.eclipse.core.resources.IFile;
  15
  16 import org.eclipse.jface.viewers.IStructuredSelection;
  17 import org.eclipse.jface.viewers.StructuredSelection;
  18
  19 import org.eclipse.ui.IEditorInput;
  20 import org.eclipse.ui.IEditorPart;
  21 import org.eclipse.ui.IWorkbenchPage;
  22 import org.eclipse.ui.ide.ResourceUtil;
  23 import org.eclipse.ui.navigator.ILinkHelper;
  24
  25 import org.eclipse.jdt.core.IJavaElement;
  26 import org.eclipse.jdt.core.JavaCore;
  27
  28 import org.eclipse.jdt.ui.JavaUI;
  29
  30 import org.eclipse.jdt.internal.ui.javaeditor.EditorUtility;
  31
  32 public class JavaFileLinkHelper implements ILinkHelper {
  33
  34         public void activateEditor(IWorkbenchPage page, IStructuredSelection selection) {
  35                 if (selection == null || selection.isEmpty())
  36                         return;
  37                 Object element= selection.getFirstElement();
  38                 IEditorPart part= EditorUtility.isOpenInEditor(element);
  39                 if (part != null) {
  40                         page.bringToTop(part);
  41                         if (element instanceof IJavaElement)
  42                                 EditorUtility.revealInEditor(part, (IJavaElement) element);
  43                 }
  44
  45         }
  46
  47         public IStructuredSelection findSelection(IEditorInput input) {
  48                 IJavaElement element= JavaUI.getEditorInputJavaElement(input);
  49                 if (element == null) {
  50                         IFile file = ResourceUtil.getFile(input);
  51                         if (file != null) {
  52                                 element= JavaCore.create(file);
  53                         }
  54                 }
  55                 return (element != null) ? new StructuredSelection(element) : StructuredSelection.EMPTY;
  56         }
  57
  58 }