/*
* Copyright 2010 JBoss Inc
*
* Licensed 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.guvnor.tools.views;
import java.util.List;
import org.eclipse.jface.viewers.AbstractTreeViewer;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.ui.progress.DeferredTreeContentManager;
import org.guvnor.tools.Activator;
import org.guvnor.tools.GuvnorRepository;
import org.guvnor.tools.utils.webdav.ResourceProperties;
import org.guvnor.tools.views.model.TreeObject;
import org.guvnor.tools.views.model.TreeParent;
/**
* Content provider for representing Guvnor structure.
*/
public class RepositoryContentProvider implements IStructuredContentProvider,
ITreeContentProvider {
private TreeParent invisibleRoot;
private DeferredTreeContentManager manager;
private AbstractTreeViewer viewer;
private String repUrl;
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
*/
public void inputChanged(Viewer v, Object oldInput, Object newInput) {
if (v instanceof AbstractTreeViewer) {
viewer = (AbstractTreeViewer)v;
manager = new DeferredTreeContentManager(this, viewer);
}
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.IContentProvider#dispose()
*/
public void dispose() {
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
*/
public Object[] getElements(Object parent) {
if (parent.equals(viewer)) {
if (invisibleRoot == null) initialize();
return getChildren(invisibleRoot);
}
return getChildren(parent);
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
*/
public Object getParent(Object child) {
if (child instanceof TreeObject) {
return ((TreeObject)child).getParent();
}
return null;
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
*/
public Object [] getChildren(Object parent) {
if (parent == invisibleRoot) {
return ((TreeParent)invisibleRoot).getChildren();
} else if (parent instanceof TreeParent) {
return manager.getChildren(parent);
}
return new Object[0];
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
*/
public boolean hasChildren(Object parent) {
if (parent instanceof TreeParent) {
return manager.mayHaveChildren(parent);
}
return false;
}
private void initialize() {
boolean shouldAdd = true;
invisibleRoot = new TreeParent("", TreeObject.Type.NONE); //$NON-NLS-1$
List<GuvnorRepository> reps = Activator.getLocationManager().getRepositories();
for (int i = 0; i < reps.size(); i++) {
if (repUrl != null) {
if (repUrl.equals(reps.get(i).getLocation())) {
shouldAdd = true;
} else {
shouldAdd = false;
}
} else {
shouldAdd = true;
}
if (shouldAdd) {
TreeParent p = new TreeParent(reps.get(i).getLocation(),
TreeObject.Type.REPOSITORY);
p.setGuvnorRepository(reps.get(i));
ResourceProperties props = new ResourceProperties();
props.setBase(""); //$NON-NLS-1$
p.setResourceProps(props);
invisibleRoot.addChild(p);
}
}
}
public void setRepositorySelection(String repUrl) {
this.repUrl = repUrl;
}
}