| /******************************************************************************* |
| * Copyright (c) 2007, 2009 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.ui.internal.views.markers; |
| |
| import org.eclipse.jface.viewers.TreeViewer; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Item; |
| import org.eclipse.swt.widgets.Tree; |
| |
| /** |
| * The MarkersTreeViewer is a viewer that optimizes the expandToLevel method. |
| * |
| * @since 3.4 |
| * |
| */ |
| |
| public class MarkersTreeViewer extends TreeViewer { |
| |
| /** |
| * Create a new instance of the receiver. |
| * |
| * @param parent |
| * @param style |
| */ |
| public MarkersTreeViewer(Composite parent, int style) { |
| super(parent, style); |
| |
| } |
| |
| /** |
| * Create a new instance of the receiver. |
| * |
| * @param parent |
| */ |
| public MarkersTreeViewer(Composite parent) { |
| super(parent); |
| } |
| |
| /** |
| * Create a new instance of the receiver. |
| * |
| * @param tree |
| */ |
| public MarkersTreeViewer(Tree tree) { |
| super(tree); |
| } |
| |
| /** |
| * Remove all of the entries and unmap all of the elements. |
| */ |
| public void removeAndClearAll() { |
| removeAll(getControl()); |
| unmapAllElements(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.eclipse.jface.viewers.AbstractTreeViewer#doUpdateItem(org.eclipse |
| * .swt.widgets.Item, java.lang.Object) |
| */ |
| @Override |
| protected void doUpdateItem(Item item, Object element) { |
| super.doUpdateItem(item, element); |
| /* |
| * For performance reasons clear cache of the item used in updating UI. |
| */ |
| MarkerSupportItem cellItem = (MarkerSupportItem) element; |
| if (cellItem.isConcrete()) |
| cellItem.clearCache(); |
| } |
| |
| } |