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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 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.ui.examples.javaeditor;
import org.eclipse.jface.text.*;
import org.eclipse.swt.graphics.Point;
/**
* Example implementation for an <code>ITextHover</code> which hovers over Java code.
*/
public class JavaTextHover implements ITextHover {
/* (non-Javadoc)
* Method declared on ITextHover
*/
public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) {
if (hoverRegion != null) {
try {
if (hoverRegion.getLength() > -1)
return textViewer.getDocument().get(hoverRegion.getOffset(), hoverRegion.getLength());
} catch (BadLocationException x) {
}
}
return JavaEditorMessages.getString("JavaTextHover.emptySelection"); //$NON-NLS-1$
}
/* (non-Javadoc)
* Method declared on ITextHover
*/
public IRegion getHoverRegion(ITextViewer textViewer, int offset) {
Point selection= textViewer.getSelectedRange();
if (selection.x <= offset && offset < selection.x + selection.y)
return new Region(selection.x, selection.y);
return new Region(offset, 0);
}
}
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