/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.uima.ruta.searchStrategy;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.apache.uima.caseditor.ide.searchstrategy.ITypeSystemSearchStrategy;
import org.apache.uima.ruta.ide.core.RutaNature;
import org.apache.uima.ruta.ide.core.builder.RutaProjectUtils;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IProjectNature;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.dialogs.ListDialog;
public class DescriptorFolderSearchStrategy implements ITypeSystemSearchStrategy {
private List<IFile> collectTypeSystems(IFolder folder) throws CoreException {
List<IFile> result = new ArrayList<IFile>();
for (IResource each : folder.members()) {
if (each instanceof IFolder) {
result.addAll(collectTypeSystems((IFolder) each));
} else if (each instanceof IFile && each.getFileExtension() != null
&& each.getFileExtension().equals("xml")) {
result.add((IFile) each);
}
}
return result;
}
public IFile findTypeSystem(IFile casFile) {
IProject project = casFile.getProject();
try {
IProjectNature nature = project.getNature(RutaNature.NATURE_ID);
if (!(nature instanceof RutaNature)) {
return null;
}
} catch (CoreException e) {
return null;
}
IFolder folder = project.getFolder(RutaProjectUtils.getDefaultDescriptorLocation());
try {
List<IFile> list = collectTypeSystems(folder);
ListDialog ld = new ListDialog(Display.getCurrent().getActiveShell());
ld.setContentProvider(new IStructuredContentProvider() {
public void dispose() {
}
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
}
public Object[] getElements(Object inputElement) {
return ((Collection<?>) inputElement).toArray();
}
});
ld.setLabelProvider(new LabelProvider() {
@Override
public String getText(Object element) {
return ((IFile) element).getName();
}
});
if (list == null || list.isEmpty()) {
return null;
}
ld.setTitle("Select Type System Descriptor");
ld.setInput(list);
ld.open();
if (ld.getResult() != null) {
return (IFile) ld.getResult()[0];
} else {
return null;
}
} catch (Exception e) {
return null;
}
}
}