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/*******************************************************************************
* Copyright (c) 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.launch.ui.internal.handler;
import java.util.Iterator;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.Assert;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.tcf.te.launch.ui.model.LaunchModel;
import org.eclipse.tcf.te.launch.ui.model.LaunchNode;
import org.eclipse.ui.handlers.HandlerUtil;
/**
* Refresh handler implementation.
*/
public class RefreshHandler extends AbstractHandler {
/* (non-Javadoc)
* @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
*/
@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
// Get the current selection
ISelection selection = HandlerUtil.getCurrentSelection(event);
if (selection instanceof IStructuredSelection && !selection.isEmpty()) {
// Loop over the selection and refresh the elements
Iterator<?> iterator = ((IStructuredSelection)selection).iterator();
while (iterator.hasNext()) {
final Object element = iterator.next();
// Refresh the element if there is a valid delegate
if (canRefresh(element)) {
// Refresh the element and the tree
refresh(element);
}
}
}
return null;
}
/**
* Check if an element can be refreshed.
* @param element The element to check.
* @return
*/
public boolean canRefresh(Object element) {
if (element instanceof LaunchNode) {
return true;
}
return false;
}
private void refresh(Object element) {
Assert.isNotNull(element);
if (element instanceof LaunchNode) {
LaunchNode node = (LaunchNode)element;
LaunchModel model = node.getModel();
model.refresh();
}
}
}
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