case-study/jdt-after/ui/org/eclipse/jdt/internal/ui/search/JavaSearchContentProvider.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.search;
  12
  13 import org.eclipse.jface.viewers.IStructuredContentProvider;
  14 import org.eclipse.jface.viewers.Viewer;
  15
  16 import org.eclipse.search.ui.text.AbstractTextSearchResult;
  17
  18 public abstract class JavaSearchContentProvider implements IStructuredContentProvider {
  19         protected final Object[] EMPTY_ARR= new Object[0];
  20
  21         private AbstractTextSearchResult fResult;
  22         private JavaSearchResultPage fPage;
  23
  24         JavaSearchContentProvider(JavaSearchResultPage page) {
  25                 fPage= page;
  26         }
  27
  28         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  29                 initialize((AbstractTextSearchResult) newInput);
  30
  31         }
  32
  33         protected void initialize(AbstractTextSearchResult result) {
  34                 fResult= result;
  35         }
  36
  37         public abstract void elementsChanged(Object[] updatedElements);
  38         public abstract void clear();
  39
  40         public void dispose() {
  41                 // nothing to do
  42         }
  43
  44         JavaSearchResultPage getPage() {
  45                 return fPage;
  46         }
  47
  48         AbstractTextSearchResult getSearchResult() {
  49                 return fResult;
  50         }
  51
  52 }