| /******************************************************************************* |
| * Copyright (c) 2008 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.debug.ui; |
| |
| /** |
| * Optional extension for an {@link IDebugModelPresentation}. Dynamically controls |
| * whether labels are computed in a UI thread. The debug platform calls debug model |
| * presentation label related methods that do not implement this interface in a |
| * <b>non-UI</b> thread. |
| * <p> |
| * For example, some models may require at least one access in a UI thread to initialize |
| * an image registry at which point they may be able to provide labels in a non-UI |
| * thread. |
| * </p> |
| * <p> |
| * Clients implementing a debug model presentation should also implement |
| * this interface to control which thread labels are generated in. |
| * </p> |
| * @since 3.4 |
| */ |
| public interface IDebugModelPresentationExtension extends IDebugModelPresentation { |
| |
| /** |
| * Returns whether the UI thread is required to retrieve a label (text, image, font, |
| * foreground, background, etc.), for the specified element. When <code>true</code> is |
| * returned, label related methods will be called in the UI thread, otherwise methods |
| * may be called in a non-UI thread. |
| * |
| * @param element the element a label is to be retrieved for |
| * @return whether label related methods should be called on the UI thread |
| */ |
| public boolean requiresUIThread(Object element); |
| } |
