/*******************************************************************************
* Copyright (c) 2000, 2010 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
* Sergey Prigogin (Google)
* Marc-Andre Laperle - bug 282495
*******************************************************************************/
package org.eclipse.cdt.internal.ui.text.c.hover;
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.jface.text.information.IInformationProviderExtension2;
import org.eclipse.ui.IEditorPart;
import org.eclipse.cdt.ui.text.c.hover.ICEditorTextHover;
/**
* Aggregator of problem and doc hovers.
* @since 5.0
*/
public class CTypeHover implements ICEditorTextHover, ITextHoverExtension, ITextHoverExtension2, IInformationProviderExtension2 {
private AbstractCEditorTextHover fProblemHover;
private AbstractCEditorTextHover fCDocHover;
private AbstractCEditorTextHover fBestMatchHover;
private AbstractCEditorTextHover fCurrentHover;
public CTypeHover() {
fProblemHover= new ProblemHover();
fCDocHover= new CDocHover();
fCurrentHover= null;
fBestMatchHover = new BestMatchHover();
}
/*
* @see ICEditorTextHover#setEditor(IEditorPart)
*/
public void setEditor(IEditorPart editor) {
fProblemHover.setEditor(editor);
fCDocHover.setEditor(editor);
fBestMatchHover.setEditor(editor);
fCurrentHover= null;
}
/*
* @see ITextHover#getHoverRegion(ITextViewer, int)
*/
public IRegion getHoverRegion(ITextViewer textViewer, int offset) {
return fCDocHover.getHoverRegion(textViewer, offset);
}
/*
* @see ITextHover#getHoverInfo(ITextViewer, IRegion)
*/
public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) {
Object info= getHoverInfo2(textViewer, hoverRegion);
if (info != null) {
return String.valueOf(info);
}
return null;
}
/*
* @see org.eclipse.jface.text.ITextHoverExtension2#getHoverInfo2(org.eclipse.jface.text.ITextViewer, org.eclipse.jface.text.IRegion)
*/
public Object getHoverInfo2(ITextViewer textViewer, IRegion hoverRegion) {
Object hoverInfo= fProblemHover.getHoverInfo2(textViewer, hoverRegion);
if (hoverInfo != null) {
fCurrentHover= fProblemHover;
return hoverInfo;
}
hoverInfo = fCDocHover.getHoverInfo2(textViewer, hoverRegion);
if(hoverInfo != null){
fCurrentHover= fCDocHover;
}
hoverInfo = fBestMatchHover.getHoverInfo(textViewer, hoverRegion);
if(hoverInfo != null){
fCurrentHover = fBestMatchHover;
}
return hoverInfo;
}
/*
* @see org.eclipse.jface.text.ITextHoverExtension#getHoverControlCreator()
*/
public IInformationControlCreator getHoverControlCreator() {
return fCurrentHover == null ? null : fCurrentHover.getHoverControlCreator();
}
/*
* @see org.eclipse.jface.text.information.IInformationProviderExtension2#getInformationPresenterControlCreator()
*/
public IInformationControlCreator getInformationPresenterControlCreator() {
return fCurrentHover == null ? null : fCurrentHover.getInformationPresenterControlCreator();
}
}