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
9 * IBM Corporation - initial API and implementation
10 *******************************************************************************/
12 package net.sourceforge.phpdt.internal.ui.viewsupport;
14 import java.util.ArrayList;
16 import net.sourceforge.phpdt.ui.IWorkingCopyProvider;
17 import net.sourceforge.phpdt.ui.ProblemsLabelDecorator.ProblemsLabelChangedEvent;
19 import org.eclipse.core.resources.IResource;
20 import org.eclipse.jface.viewers.IBaseLabelProvider;
21 import org.eclipse.jface.viewers.LabelProviderChangedEvent;
22 import org.eclipse.jface.viewers.TableViewer;
23 import org.eclipse.swt.widgets.Composite;
24 import org.eclipse.swt.widgets.Item;
25 import org.eclipse.swt.widgets.Table;
26 import org.eclipse.swt.widgets.Widget;
29 * Extends a TableViewer to allow more performance when showing error ticks.
30 * A <code>ProblemItemMapper</code> is contained that maps all items in
31 * the tree to underlying resource
33 public class ProblemTableViewer extends TableViewer {
35 protected ResourceToItemsMapper fResourceToItemsMapper;
38 * Constructor for ProblemTableViewer.
41 public ProblemTableViewer(Composite parent) {
47 * Constructor for ProblemTableViewer.
51 public ProblemTableViewer(Composite parent, int style) {
57 * Constructor for ProblemTableViewer.
60 public ProblemTableViewer(Table table) {
65 private void initMapper() {
66 fResourceToItemsMapper= new ResourceToItemsMapper(this);
70 * @see StructuredViewer#mapElement(Object, Widget)
72 protected void mapElement(Object element, Widget item) {
73 super.mapElement(element, item);
74 if (item instanceof Item) {
75 fResourceToItemsMapper.addToMap(element, (Item) item);
80 * @see StructuredViewer#unmapElement(Object, Widget)
82 protected void unmapElement(Object element, Widget item) {
83 if (item instanceof Item) {
84 fResourceToItemsMapper.removeFromMap(element, (Item) item);
86 super.unmapElement(element, item);
90 * @see StructuredViewer#unmapAllElements()
92 protected void unmapAllElements() {
93 fResourceToItemsMapper.clearMap();
94 super.unmapAllElements();
98 * @see ContentViewer#handleLabelProviderChanged(LabelProviderChangedEvent)
100 protected void handleLabelProviderChanged(LabelProviderChangedEvent event) {
101 if (event instanceof ProblemsLabelChangedEvent) {
102 ProblemsLabelChangedEvent e= (ProblemsLabelChangedEvent) event;
103 if (!e.isMarkerChange() && canIgnoreChangesFromAnnotionModel()) {
108 Object[] changed= event.getElements();
109 if (changed != null && !fResourceToItemsMapper.isEmpty()) {
110 ArrayList others= new ArrayList(changed.length);
111 for (int i= 0; i < changed.length; i++) {
112 Object curr= changed[i];
113 if (curr instanceof IResource) {
114 fResourceToItemsMapper.resourceChanged((IResource) curr);
119 if (others.isEmpty()) {
122 event= new LabelProviderChangedEvent((IBaseLabelProvider) event.getSource(), others.toArray());
124 super.handleLabelProviderChanged(event);
128 * Answers whether this viewer can ignore label provider changes resulting from
129 * marker changes in annotation models
131 private boolean canIgnoreChangesFromAnnotionModel() {
132 Object contentProvider= getContentProvider();
133 return contentProvider instanceof IWorkingCopyProvider && !((IWorkingCopyProvider)contentProvider).providesWorkingCopies();