/*******************************************************************************
* Copyright (c) 2007, 2017 Red Hat, Inc.
* 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:
* Red Hat - initial API and implementation
*******************************************************************************/
package org.eclipse.linuxtools.internal.rpm.ui.editor.outline;
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.linuxtools.rpm.ui.editor.parser.Specfile;
import org.eclipse.linuxtools.rpm.ui.editor.parser.SpecfilePackage;
import org.eclipse.linuxtools.rpm.ui.editor.parser.SpecfilePackageContainer;
import org.eclipse.linuxtools.rpm.ui.editor.parser.SpecfileParser;
import org.eclipse.ui.texteditor.IDocumentProvider;
import org.eclipse.ui.texteditor.ITextEditor;
public class SpecfileContentProvider implements ITreeContentProvider {
private IDocumentProvider documentProvider;
private Specfile specfile;
protected static final String SECTION_POSITIONS = "section_positions"; //$NON-NLS-1$
protected IPositionUpdater positionUpdater = new DefaultPositionUpdater(SECTION_POSITIONS);
public SpecfileContentProvider(ITextEditor editor) {
specfile = new SpecfileParser().parse(editor.getDocumentProvider().getDocument(editor.getEditorInput()));
this.documentProvider = editor.getDocumentProvider();
}
@Override
public void dispose() {
}
@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);
specfile = new SpecfileParser().parse(document);
}
}
}
@Override
public Object[] getChildren(Object parentElement) {
if (parentElement == specfile) {
int elmsSize = 1 + 1 + specfile.getSections().size();
Object[] elms = new Object[elmsSize];
elms[0] = specfile.getPreamble();
Object[] sections = specfile.getSections().toArray();
for (int i = 0; i < sections.length; i++) {
elms[i + 1] = sections[i];
}
elms[elmsSize - 1] = specfile.getPackages();
return elms;
} else if (parentElement instanceof SpecfilePackageContainer) {
return ((SpecfilePackageContainer) parentElement).getPackages();
} else if (parentElement instanceof SpecfilePackage) {
return ((SpecfilePackage) parentElement).getSections();
}
return new Object[0];
}
@Override
public Object getParent(Object element) {
return null;
}
@Override
public boolean hasChildren(Object element) {
if (element == specfile) {
return true;
} else if (element instanceof SpecfilePackageContainer) {
return ((SpecfilePackageContainer) element).hasChildren();
} else if (element instanceof SpecfilePackage) {
return ((SpecfilePackage) element).hasChildren();
}
return false;
}
@Override
public Object[] getElements(Object inputElement) {
return this.getChildren(specfile);
}
}