/*******************************************************************************
* Copyright (c) 2006 Sybase, 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:
* Sybase, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.pagedesigner.editors;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jst.jsp.ui.views.contentoutline.JSPContentOutlineConfiguration;
import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
import org.eclipse.wst.sse.core.internal.provisional.IndexedRegion;
/**
* the HTML editor's outline view configuration
*
*/
public class OutlineConfiguration extends JSPContentOutlineConfiguration {
private Object[] _selections = new Object[0];
public ISelection getSelection(TreeViewer viewer, ISelection selection) {
if ((viewer.getInput() instanceof IStructuredModel)
&& (selection instanceof ITextSelection)) {
_selections = getSelectedObjects((IStructuredModel) viewer
.getInput(), (ITextSelection) selection);
if (_selections != null) {
return super.getSelection(viewer, new StructuredSelection(
_selections));
}
}
else if (selection instanceof IStructuredSelection)
{
return super.getSelection(viewer, selection);
}
return super.getSelection(viewer, new StructuredSelection(_selections));
}
private Object[] getSelectedObjects(IStructuredModel model,
ITextSelection selection) {
Object[] selectedStructures = null;
if (model != null) {
IndexedRegion region = model
.getIndexedRegion(selection.getOffset());
int end = selection.getOffset() + selection.getLength();
if (region != null) {
if (end <= region.getEndOffset()) {
// single selection
selectedStructures = new Object[1];
selectedStructures[0] = region;
} else {
// multiple selection
int maxLength = model.getStructuredDocument().getLength();
List structures = new ArrayList(2);
while (region != null && region.getEndOffset() <= end
&& region.getEndOffset() < maxLength) {
structures.add(region);
region = model
.getIndexedRegion(region.getEndOffset() + 1);
}
selectedStructures = structures.toArray();
}
}
}
if (selectedStructures == null) {
selectedStructures = new Object[0];
}
return selectedStructures;
}
}