/*******************************************************************************
* Copyright (c) 2010, 2015 Wind River Systems, Inc. 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.debug.internal.ui.editors;
import org.eclipse.cdt.ui.text.c.hover.ICEditorTextHover;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.debug.ui.DebugUITools;
import org.eclipse.jface.text.IInformationControlCreator;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ITextHoverExtension;
import org.eclipse.jface.text.ITextHoverExtension2;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.ui.IEditorPart;
/**
* Common debug text hover delegating to debugger specific implementations
* based on active debug context.
*
* @since 7.0
*/
public class DelegatingDebugTextHover implements ICEditorTextHover, ITextHoverExtension, ITextHoverExtension2 {
private IEditorPart fEditor;
private ICEditorTextHover fDelegate;
/*
* @see org.eclipse.jface.text.ITextHover#getHoverRegion(org.eclipse.jface.text.ITextViewer, int)
*/
@Override
public IRegion getHoverRegion(ITextViewer viewer, int offset) {
fDelegate = getDelegate();
if (fDelegate != null) {
return fDelegate.getHoverRegion(viewer, offset);
}
return null;
}
/*
* @see org.eclipse.jface.text.ITextHover#getHoverInfo(org.eclipse.jface.text.ITextViewer, org.eclipse.jface.text.IRegion)
*/
@Override
@SuppressWarnings("deprecation")
public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) {
fDelegate = getDelegate();
if (fDelegate != null) {
return fDelegate.getHoverInfo(textViewer, hoverRegion);
}
return null;
}
/*
* @see org.eclipse.jface.text.ITextHoverExtension2#getHoverInfo2(org.eclipse.jface.text.ITextViewer, org.eclipse.jface.text.IRegion)
*/
@Override
@SuppressWarnings("deprecation")
public Object getHoverInfo2(ITextViewer textViewer, IRegion hoverRegion) {
fDelegate = getDelegate();
if (fDelegate instanceof ITextHoverExtension2) {
return ((ITextHoverExtension2) fDelegate).getHoverInfo2(textViewer, hoverRegion);
}
// fall back to legacy method
if (fDelegate != null) {
return fDelegate.getHoverInfo(textViewer, hoverRegion);
}
return null;
}
/*
* @see org.eclipse.jface.text.ITextHoverExtension#getHoverControlCreator()
*/
@Override
public IInformationControlCreator getHoverControlCreator() {
if (fDelegate instanceof ITextHoverExtension) {
return ((ITextHoverExtension) fDelegate).getHoverControlCreator();
}
return null;
}
/*
* @see org.eclipse.cdt.ui.text.c.hover.ICEditorTextHover#setEditor(org.eclipse.ui.IEditorPart)
*/
@Override
public final void setEditor(IEditorPart editor) {
fEditor = editor;
}
private ICEditorTextHover getDelegate() {
IAdaptable context = DebugUITools.getDebugContext();
if (context != null) {
ICEditorTextHover hover = context.getAdapter(ICEditorTextHover.class);
if (hover != null) {
hover.setEditor(fEditor);
}
return hover;
}
return null;
}
}