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

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2011 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.typehierarchy;
  12
  13 import java.util.List;
  14
  15 import org.eclipse.swt.widgets.Composite;
  16
  17 import org.eclipse.jdt.core.IType;
  18 import org.eclipse.jdt.core.ITypeHierarchy;
  19
  20 /**
  21  * A viewer including the content provider for the supertype hierarchy.
  22  * Used by the TypeHierarchyViewPart which has to provide a TypeHierarchyLifeCycle
  23  * on construction (shared type hierarchy)
  24  */
  25 public class SuperTypeHierarchyViewer extends TypeHierarchyViewer {
  26
  27         public SuperTypeHierarchyViewer(Composite parent, TypeHierarchyLifeCycle lifeCycle) {
  28                 super(parent, new SuperTypeHierarchyContentProvider(lifeCycle), lifeCycle);
  29         }
  30
  31         /*
  32          * @see TypeHierarchyViewer#updateContent
  33          */
  34         @Override
  35         public void updateContent(boolean expand) {
  36                 getTree().setRedraw(false);
  37                 refresh();
  38                 if (expand) {
  39                         expandAll();
  40                 }
  41                 getTree().setRedraw(true);
  42         }
  43
  44         /*
  45          * Content provider for the supertype hierarchy
  46          */
  47         public static class SuperTypeHierarchyContentProvider extends TypeHierarchyContentProvider {
  48                 public SuperTypeHierarchyContentProvider(TypeHierarchyLifeCycle lifeCycle) {
  49                         super(lifeCycle);
  50                 }
  51
  52                 @Override
  53                 protected final void getTypesInHierarchy(IType type, List<IType> res) {
  54                         ITypeHierarchy hierarchy= getHierarchy();
  55                         if (hierarchy != null) {
  56                                 IType[] types= hierarchy.getSupertypes(type);
  57                                 for (int i= 0; i < types.length; i++) {
  58                                         res.add(types[i]);
  59                                 }
  60                         }
  61                 }
  62
  63                 @Override
  64                 protected IType getParentType(IType type) {
  65                         // cant handle
  66                         return null;
  67                 }
  68
  69         }
  70
  71 }