InputSourceViewer.java example

Explorer
statet-master
/*=============================================================================#
 # Copyright (c) 2005-2016 Stephan Wahlbrink (WalWare.de) 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:
 #     Stephan Wahlbrink - initial API and implementation
 #=============================================================================*/

package de.walware.statet.nico.ui.console;

import org.eclipse.jface.text.source.SourceViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.dnd.TextTransfer;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;

import de.walware.ecommons.ui.util.DNDUtil;


public class InputSourceViewer extends SourceViewer {
	
	
	InputSourceViewer(final Composite parent) {
		super(parent, null, null, false, SWT.SINGLE);
		
		initializeDragAndDrop();
		initTabControl();
	}
	
	
	protected void initializeDragAndDrop() {
		DNDUtil.addDropSupport(getTextWidget(), new DNDUtil.SimpleTextDropAdapter() {
			@Override
			protected StyledText getTextWidget() {
				return InputSourceViewer.this.getTextWidget();
			}
		}, new Transfer[] { TextTransfer.getInstance() });
	}
	
	private void initTabControl() {
		// disable traverse on TAB key event, to enable TAB char insertion.
		getTextWidget().addListener(SWT.Traverse, new Listener() {
			@Override
			public void handleEvent(final Event event) {
				if (event.stateMask == SWT.NONE && event.character == SWT.TAB) {
					event.doit = false;
				}
			}
		});
	}
	
}