| /******************************************************************************* |
| * Copyright (c) 2000, 2005 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jface.text.contentassist; |
| |
| import org.eclipse.jface.text.ITextViewer; |
| import org.eclipse.jface.text.TextPresentation; |
| |
| |
| /** |
| * A context information presenter determines the presentation |
| * of context information depending on a given document position. |
| * <p> |
| * The interface can be implemented by clients. |
| * </p> |
| * |
| * @since 2.0 |
| */ |
| public interface IContextInformationPresenter { |
| |
| /** |
| * Installs this presenter for the given context information. |
| * |
| * @param info the context information which this presenter should style |
| * @param viewer the text viewer on which the information is presented |
| * @param offset the document offset for which the information has been computed |
| */ |
| void install(IContextInformation info, ITextViewer viewer, int offset); |
| |
| /** |
| * Updates the given presentation of the given context information |
| * at the given document position. Returns whether update changed the |
| * presentation. |
| * |
| * @param offset the current offset within the document |
| * @param presentation the presentation to be updated |
| * @return <code>true</code> if the given presentation has been changed |
| */ |
| boolean updatePresentation(int offset, TextPresentation presentation); |
| } |