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/*******************************************************************************
* Copyright (c) 2012, 2015 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.terminals.ui.launcher;
import java.util.Map;
import java.util.concurrent.atomic.AtomicReference;
import org.eclipse.core.runtime.Assert;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.tcf.protocol.Protocol;
import org.eclipse.tcf.te.core.terminals.interfaces.constants.ITerminalsConnectorConstants;
import org.eclipse.tcf.te.tcf.locator.interfaces.nodes.IPeerModel;
import org.eclipse.tcf.te.tcf.locator.interfaces.nodes.IPeerNode;
import org.eclipse.tcf.te.tcf.locator.interfaces.services.IPeerModelLookupService;
import org.eclipse.tcf.te.tcf.locator.model.ModelManager;
import org.eclipse.tcf.te.ui.terminals.interfaces.IMementoHandler;
import org.eclipse.ui.IMemento;
/**
* Terminals (TCF) terminal connection memento handler implementation.
*/
public class TerminalsMementoHandler implements IMementoHandler {
/* (non-Javadoc)
* @see org.eclipse.tcf.te.ui.terminals.interfaces.IMementoHandler#saveState(org.eclipse.ui.IMemento, java.util.Map)
*/
@Override
public void saveState(IMemento memento, Map<String, Object> properties) {
Assert.isNotNull(memento);
Assert.isNotNull(properties);
// Do not write the terminal title to the memento -> needs to
// be recreated at the time of restoration.
memento.putString(ITerminalsConnectorConstants.PROP_ENCODING, (String)properties.get(ITerminalsConnectorConstants.PROP_ENCODING));
// Get the selection from the properties
ISelection selection = (ISelection)properties.get(ITerminalsConnectorConstants.PROP_SELECTION);
if (selection instanceof IStructuredSelection && !selection.isEmpty()) {
Object element = ((IStructuredSelection)selection).getFirstElement();
if (element instanceof IPeerNode) {
IPeerNode peerNode = (IPeerNode)element;
memento.putString("peerID", peerNode.getPeerId()); //$NON-NLS-1$
}
}
}
/* (non-Javadoc)
* @see org.eclipse.tcf.te.ui.terminals.interfaces.IMementoHandler#restoreState(org.eclipse.ui.IMemento, java.util.Map)
*/
@Override
public void restoreState(IMemento memento, Map<String, Object> properties) {
Assert.isNotNull(memento);
Assert.isNotNull(properties);
// Restore the terminal properties from the memento
properties.put(ITerminalsConnectorConstants.PROP_ENCODING, memento.getString(ITerminalsConnectorConstants.PROP_ENCODING));
final String peerID = memento.getString("peerID"); //$NON-NLS-1$
if (peerID != null) {
final IPeerModel model = ModelManager.getPeerModel();
Assert.isNotNull(model);
final AtomicReference<IPeerNode> peerNode = new AtomicReference<IPeerNode>();
Runnable runnable = new Runnable() {
@Override
public void run() {
peerNode.set(model.getService(IPeerModelLookupService.class).lkupPeerModelById(peerID));
}
};
Assert.isTrue(!Protocol.isDispatchThread());
Protocol.invokeAndWait(runnable);
// If the node is null, this might mean that the peer to restore is a dynamically discovered peer.
// In this case, we have to wait a little bit to give the locator service the chance to sync.
if (peerNode.get() == null) {
// Sleep shortly
try { Thread.sleep(300); } catch (InterruptedException e) {}
Protocol.invokeAndWait(runnable);
}
if (peerNode.get() != null) {
properties.put(ITerminalsConnectorConstants.PROP_SELECTION, new StructuredSelection(peerNode.get()));
}
}
}
}
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