| /******************************************************************************* |
| * 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; |
| |
| |
| /** |
| * A context information validator is used to determine if |
| * a displayed context information is still valid or should |
| * be dismissed. |
| * <p> |
| * The interface can be implemented by clients. |
| * </p> |
| * |
| * @see IContextInformationPresenter |
| */ |
| public interface IContextInformationValidator { |
| |
| /** |
| * Installs this validator for the given context information. |
| * |
| * @param info the context information which this validator should check |
| * @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); |
| |
| /** |
| * Returns whether the information this validator is installed on is still valid |
| * at the given document position. |
| * |
| * @param offset the current offset within the document |
| * @return <code>true</code> if the information also valid at the given document position |
| */ |
| boolean isContextInformationValid(int offset); |
| } |