| /******************************************************************************* |
| * Copyright (c) 2004, 2013 Tasktop Technologies and others. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * https://www.eclipse.org/legal/epl-2.0 |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Tasktop Technologies - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.mylyn.internal.tasks.ui.search; |
| |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.Viewer; |
| |
| /** |
| * @author Rob Elves |
| */ |
| public abstract class SearchResultContentProvider implements ITreeContentProvider { |
| |
| /** An empty array of objects */ |
| protected final Object[] EMPTY_ARR = new Object[0]; |
| |
| /** The search result for this content provider */ |
| protected RepositorySearchResult searchResult; |
| |
| public void dispose() { |
| // nothing to do |
| } |
| |
| public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { |
| if (newInput instanceof RepositorySearchResult) { |
| initialize((RepositorySearchResult) newInput); |
| } else { |
| searchResult = null; |
| } |
| } |
| |
| /** |
| * Initializes the content provider with the given search result. |
| * |
| * @param result |
| * The search result to use with this content provider |
| */ |
| protected void initialize(RepositorySearchResult result) { |
| searchResult = result; |
| } |
| |
| /** |
| * This method is called whenever the set of matches for the given elements changes. |
| * |
| * @param updatedElements |
| * The array of objects that has to be refreshed |
| * @see |
| * @see org.eclipse.search.ui.text.AbstractTextSearchViewPage#elementsChanged(java.lang.Object[]) |
| */ |
| public abstract void elementsChanged(Object[] updatedElements); |
| |
| /** |
| * Clears the viewer. |
| */ |
| public abstract void clear(); |
| } |