/*=============================================================================#
# Copyright (c) 2014-2016 Stephan Wahlbrink (WalWare.de) 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:
# Stephan Wahlbrink - initial API and implementation
#=============================================================================*/
package de.walware.ecommons.ltk.ui.sourceediting;
import java.util.List;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import de.walware.ecommons.ltk.core.ISourceModelStamp;
import de.walware.ecommons.ltk.core.model.IModelElement.Filter;
import de.walware.ecommons.ltk.core.model.ISourceStructElement;
import de.walware.ecommons.ltk.core.model.ISourceUnitModelInfo;
public class OutlineContentProvider implements ITreeContentProvider {
public interface IOutlineContent {
ISourceUnitModelInfo getModelInfo(Object inputElement);
Filter getContentFilter();
}
private final IOutlineContent content;
public OutlineContentProvider(final IOutlineContent content) {
this.content= content;
}
protected final IOutlineContent getContent() {
return this.content;
}
public ISourceModelStamp getStamp(final Object inputElement) {
final ISourceUnitModelInfo modelInfo= getContent().getModelInfo(inputElement);
return (modelInfo != null) ? modelInfo.getStamp() : null;
}
@Override
public void inputChanged(final Viewer viewer, final Object oldInput, final Object newInput) {
}
@Override
public Object[] getElements(final Object inputElement) {
final ISourceUnitModelInfo modelInfo= getContent().getModelInfo(inputElement);
if (modelInfo != null) {
final List<? extends ISourceStructElement> children= modelInfo.getSourceElement().getSourceChildren(getContent().getContentFilter());
return children.toArray(new ISourceStructElement[children.size()]);
}
return new ISourceStructElement[0];
}
@Override
public void dispose() {
}
@Override
public Object getParent(final Object element) {
final ISourceStructElement o= (ISourceStructElement) element;
return o.getSourceParent();
}
@Override
public boolean hasChildren(final Object element) {
final ISourceStructElement o= (ISourceStructElement) element;
return o.hasSourceChildren(getContent().getContentFilter());
}
@Override
public Object[] getChildren(final Object parentElement) {
// Check required for E bug #438919
if (parentElement instanceof ISourceStructElement) {
final ISourceStructElement o= (ISourceStructElement) parentElement;
final List<? extends ISourceStructElement> children= o.getSourceChildren(getContent().getContentFilter());
return children.toArray(new ISourceStructElement[children.size()]);
}
return new ISourceStructElement[0];
}
}