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/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Common Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors: IBM Corporation - initial API and implementation
******************************************************************************/
package org.eclipse.ui.internal.console;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.DocumentEvent;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IDocumentListener;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.events.VerifyEvent;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.console.ConsolePlugin;
import org.eclipse.ui.console.IConsoleDocumentPartitioner;
import org.eclipse.ui.console.TextConsole;
import org.eclipse.ui.console.TextConsoleViewer;
/**
* Viewer used to display an IOConsole
*
* @since 3.1
*/
public class IOConsoleViewer extends TextConsoleViewer {
/**
* will always scroll with output if value is true.
*/
private boolean fAutoScroll = true;
private IDocumentListener fDocumentListener;
public IOConsoleViewer(Composite parent, TextConsole console) {
super(parent, console);
}
public boolean isAutoScroll() {
return fAutoScroll;
}
public void setAutoScroll(boolean scroll) {
fAutoScroll = scroll;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.TextViewer#handleVerifyEvent(org.eclipse.swt.events.VerifyEvent)
*/
protected void handleVerifyEvent(VerifyEvent e) {
IDocument doc = getDocument();
String[] legalLineDelimiters = doc.getLegalLineDelimiters();
String eventString = e.text;
IConsoleDocumentPartitioner partitioner = (IConsoleDocumentPartitioner) doc.getDocumentPartitioner();
if (!partitioner.isReadOnly(e.start)) {
boolean isCarriageReturn = false;
for (int i = 0; i < legalLineDelimiters.length; i++) {
if (e.text.equals(legalLineDelimiters[i])) {
isCarriageReturn = true;
break;
}
}
if (!isCarriageReturn) {
super.handleVerifyEvent(e);
return;
}
}
int length = doc.getLength();
if (e.start == length) {
super.handleVerifyEvent(e);
} else {
try {
doc.replace(length, 0, eventString);
} catch (BadLocationException e1) {
}
e.doit = false;
}
}
/**
* makes the associated text widget uneditable.
*/
public void setReadOnly() {
ConsolePlugin.getStandardDisplay().asyncExec(new Runnable() {
public void run() {
StyledText text = getTextWidget();
if (text != null) {
text.setEditable(false);
}
}
});
}
/**
* @return <code>false</code> if text is editable
*/
public boolean isReadOnly() {
return !getTextWidget().getEditable();
}
/* (non-Javadoc)
* @see org.eclipse.jface.text.ITextViewer#setDocument(org.eclipse.jface.text.IDocument)
*/
public void setDocument(IDocument document) {
IDocument oldDocument= getDocument();
super.setDocument(document);
if (oldDocument != null) {
oldDocument.removeDocumentListener(getDocumentListener());
}
if (document != null) {
document.addDocumentListener(getDocumentListener());
}
}
private IDocumentListener getDocumentListener() {
if (fDocumentListener == null) {
fDocumentListener= new IDocumentListener() {
public void documentAboutToBeChanged(DocumentEvent event) {
}
public void documentChanged(DocumentEvent event) {
if (fAutoScroll) {
revealEndOfDocument();
}
}
};
}
return fDocumentListener;
}
}
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