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/*******************************************************************************
* Copyright (c) 2011, 2012 Wind River Systems, 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.te.tcf.filesystem.ui.internal.wizards;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.tcf.protocol.Protocol;
import org.eclipse.tcf.te.tcf.locator.interfaces.nodes.ILocatorModel;
import org.eclipse.tcf.te.tcf.locator.interfaces.nodes.IPeerModel;
import org.eclipse.tcf.te.tcf.locator.interfaces.services.ILocatorModelRefreshService;
import org.eclipse.tcf.te.tcf.locator.model.Model;
import org.eclipse.tcf.te.ui.views.interfaces.IRoot;
/**
* The content provider used by TargetSelectionPage to provide the current
* target list.
*/
public class TargetContentProvider implements ITreeContentProvider {
private final static Object[] NO_ELEMENTS = new Object[0];
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
*/
@Override
public Object[] getChildren(Object parentElement) {
Object[] children = NO_ELEMENTS;
// If it is the locator model, get the peers
if (parentElement instanceof ILocatorModel) {
children = ((ILocatorModel)parentElement).getPeers();
}
return children;
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
*/
@Override
public Object getParent(Object element) {
// If it is a peer model node, return the parent locator model
if (element instanceof IPeerModel) {
return ((IPeerModel)element).getModel();
}
return null;
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
*/
@Override
public boolean hasChildren(Object element) {
boolean hasChildren = false;
if (element instanceof ILocatorModel) {
hasChildren = ((ILocatorModel)element).getPeers().length > 0;
}
return hasChildren;
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
*/
@Override
public Object[] getElements(Object inputElement) {
return getChildren(inputElement);
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IContentProvider#dispose()
*/
@Override
public void dispose() {
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
*/
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
final ILocatorModel model = Model.getModel();
if (model != null && newInput instanceof IRoot) {
// Refresh the model asynchronously
Protocol.invokeLater(new Runnable() {
@Override
public void run() {
model.getService(ILocatorModelRefreshService.class).refresh();
}
});
}
}
}
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