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/*******************************************************************************
* Copyright (c) 2002, 2005 QNX Software Systems 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:
* QNX Software Systems - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.ui.text.c.hover;
import org.eclipse.cdt.ui.text.c.hover.ICEditorTextHover;
import org.eclipse.jface.text.IInformationControlCreator;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ITextHoverExtension;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.information.IInformationProviderExtension2;
import org.eclipse.ui.IEditorPart;
/**
* CEditorTexHoverProxy
*/
public class CEditorTextHoverProxy extends AbstractCEditorTextHover implements ITextHoverExtension, IInformationProviderExtension2 {
private CEditorTextHoverDescriptor fHoverDescriptor;
private ICEditorTextHover fHover;
public CEditorTextHoverProxy(CEditorTextHoverDescriptor descriptor, IEditorPart editor) {
fHoverDescriptor= descriptor;
setEditor(editor);
}
/*
* @see ICEditorTextHover#setEditor(IEditorPart)
*/
public void setEditor(IEditorPart editor) {
super.setEditor(editor);
if (fHover != null)
fHover.setEditor(getEditor());
}
public boolean isEnabled() {
return true;
}
/*
* @see ITextHover#getHoverRegion(ITextViewer, int)
*/
public IRegion getHoverRegion(ITextViewer textViewer, int offset) {
if (ensureHoverCreated())
return fHover.getHoverRegion(textViewer, offset);
return null;
}
/*
* @see ITextHover#getHoverInfo(ITextViewer, IRegion)
*/
public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) {
if (ensureHoverCreated())
return fHover.getHoverInfo(textViewer, hoverRegion);
return null;
}
private boolean ensureHoverCreated() {
if (!isEnabled() || fHoverDescriptor == null)
return false;
return isCreated() || createHover();
}
private boolean isCreated() {
return fHover != null;
}
private boolean createHover() {
fHover= fHoverDescriptor.createTextHover();
if (fHover != null)
fHover.setEditor(getEditor());
return isCreated();
}
/*
* @see org.eclipse.jface.text.ITextHoverExtension#getHoverControlCreator()
* @since 3.0
*/
public IInformationControlCreator getHoverControlCreator() {
if (ensureHoverCreated() && (fHover instanceof ITextHoverExtension))
return ((ITextHoverExtension)fHover).getHoverControlCreator();
return null;
}
/*
* @see org.eclipse.jface.text.information.IInformationProviderExtension2#getInformationPresenterControlCreator()
*/
public IInformationControlCreator getInformationPresenterControlCreator() {
if (ensureHoverCreated() && (fHover instanceof IInformationProviderExtension2))
return ((IInformationProviderExtension2)fHover).getInformationPresenterControlCreator();
return null;
}
}
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