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/*******************************************************************************
* Copyright (c) 2007, 2015 Red Hat, Inc.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Red Hat Incorporated - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.autotools.ui.editors.outline;
import org.eclipse.cdt.autotools.ui.editors.AutoconfEditor;
import org.eclipse.cdt.autotools.ui.editors.parser.AutoconfElement;
import org.eclipse.jface.text.BadPositionCategoryException;
import org.eclipse.jface.text.DefaultPositionUpdater;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IPositionUpdater;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.ui.texteditor.IDocumentProvider;
import org.eclipse.ui.texteditor.ITextEditor;
public class AutoconfContentProvider implements ITreeContentProvider {
private IDocumentProvider documentProvider;
private AutoconfEditor editor;
protected final static String SECTION_POSITIONS = "section_positions";
protected IPositionUpdater positionUpdater = new DefaultPositionUpdater(SECTION_POSITIONS);
public AutoconfContentProvider(ITextEditor editor) {
if (editor instanceof AutoconfEditor) {
this.editor = (AutoconfEditor) editor;
}
this.documentProvider = editor.getDocumentProvider();
}
@Override
public void dispose() {
// TODO Auto-generated method stub
}
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
if (oldInput != null)
{
IDocument document = documentProvider.getDocument(oldInput);
if (document != null)
{
try
{
document.removePositionCategory(SECTION_POSITIONS);
}
catch (BadPositionCategoryException x)
{
}
document.removePositionUpdater(positionUpdater);
}
}
if (newInput != null)
{
IDocument document = documentProvider.getDocument(newInput);
if (document != null)
{
document.addPositionCategory(SECTION_POSITIONS);
document.addPositionUpdater(positionUpdater);
}
}
}
@Override
public Object[] getChildren(Object parentElement) {
if (parentElement instanceof AutoconfElement) {
AutoconfElement element = (AutoconfElement)parentElement;
return element.getChildren();
}
return new Object[0];
}
@Override
public Object getParent(Object element) {
return null;
}
@Override
public boolean hasChildren(Object element) {
if (element instanceof AutoconfElement) {
return ((AutoconfElement)element).hasChildren();
}
return false;
}
@Override
public Object[] getElements(Object inputElement) {
return this.getChildren(editor.getRootElement());
}
}
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