Java tutorial
/******************************************************************************* * Copyright (c) 2000, 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.jface.text; /** * Text listeners registered with a text viewer are informed about all * modifications of an {@link org.eclipse.jface.text.ITextViewer} by means of * text events. A text event describes a change as a replace operation. * <p> * The changes described in the event are the changes applied to the text * viewer's widget (i.e., its visual representation) and not those applied to the * text viewer's document. The text event can be asked to return the * corresponding document event. If the text event does not contain a document * event, the modification of the text viewer is a presentation change. For * example, changing the visible region of a text viewer, is a presentation * change. A completely empty text event represents a change of the viewer's * redraw state.</p> * <p> * If a text listener receives a text event, it is guaranteed that both the * document and the viewer's visual representation are synchronized.</p> * <p> * Clients may implement this interface.</p> * * @see org.eclipse.jface.text.ITextViewer * @see org.eclipse.jface.text.TextEvent * @see org.eclipse.jface.text.DocumentEvent */ public interface ITextListener { /** * The visual representation of a text viewer this listener is registered with * has been changed. * * @param event the description of the change */ void textChanged(TextEvent event); }