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/**
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* Copyright (C) 2007 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.taxeditor.singlesource.editor.name.container;
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import javax.naming.OperationNotSupportedException;
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import org.apache.log4j.Logger;
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import org.eclipse.swt.events.VerifyEvent;
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import eu.etaxonomy.cdm.model.taxon.TaxonBase;
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import eu.etaxonomy.taxeditor.editor.name.container.AbstractGroupedContainer;
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/**
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* Checks text entered into a StyledText widget for line breaks, sends
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* split text to abstract method handleSplitText().
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* <p>
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* VerifyListener interface methods break up the text into lines. Each line is sent individually
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* to the handleSplitText() method when the KeyListener interface method keyReleased() is called.
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* This is because if the StyledText widget is disposed before the key is released, an SWT
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* exception occurs.
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* <p>
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* The listener should be set on the StyledText widget as follows:
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* <code><pre>
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* StyledText styledText = new SourceViewer().getTextWidget();
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* LineBreakListener lineBreakListener = new LineBreakListener() {
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* public void handleSplitText(String text) {
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* ... some operation ...
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* }
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* };
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*
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* styledText.addVerifyListener(lineBreakListener);
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* styledText.addKeyListener(lineBreakListener);
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* </pre></code>
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*
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* @author p.ciardelli
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* @created 19.05.2008
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* @version 1.0
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*/
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public class LineBreakListenerFacadeImpl<T extends TaxonBase> extends LineBreakListenerFacade<T> {
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private static final Logger logger = Logger.getLogger(LineBreakListenerFacadeImpl.class);
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public LineBreakListenerFacadeImpl() {
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super();
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}
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public LineBreakListenerFacadeImpl(AbstractGroupedContainer<T> container) {
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super(container);
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}
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protected Object getInstanceInternal(AbstractGroupedContainer<T> container) throws OperationNotSupportedException
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{
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throw new OperationNotSupportedException("LineBreakListener not supported.");
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}
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/**
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* {@inheritDoc}
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*
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* Checks for 3 conditions of name viewer text:
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* 1) no line breaks in text
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* 2) line break at the end of the text
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* 3) line break in the middle of the text
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* @see org.eclipse.swt.events.VerifyListener#verifyText(org.eclipse.swt.events.VerifyEvent)
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*/
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public void verifyText(VerifyEvent e) {
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try {
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throw new OperationNotSupportedException("LineBreakListener not supported.");
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} catch (OperationNotSupportedException e1) {
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logger.warn("LineBreakListenerFacedeImpl.verifyText(VerifyEvent): "+ e1.getMessage());
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}
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}
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/**
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* <p>handleSplitText</p>
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*
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* @param text a {@link java.lang.String} object.
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*/
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public void handleSplitText(String text)
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{
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try {
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throw new OperationNotSupportedException("LineBreakListener not supported.");
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} catch (OperationNotSupportedException e) {
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logger.warn("LineBreakListenerFacedeImpl.verifyText(VerifyEvent): "+ e.getMessage());
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}
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}
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}
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