/*
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* Copyright (C) 2006 University of Dundee. All rights reserved.
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*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
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* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License along
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package org.openmicroscopy.shoola.agents.treeviewer;
import java.util.Collection;
import java.util.List;
import org.openmicroscopy.shoola.agents.treeviewer.view.TreeViewer;
import omero.gateway.SecurityContext;
import org.openmicroscopy.shoola.env.data.views.CallHandle;
import omero.gateway.model.DataObject;
/**
* Removes data objects. Depending on the specified parameters,
* This class calls one of the {@code deleteObjects} methods in the
* <code>AdminView</code>.
*
* @author Jean-Marie Burel
* <a href="mailto:j.burel@dundee.ac.uk">j.burel@dundee.ac.uk</a>
* @version 2.2
* @since OME2.2
*/
public class DataObjectRemover
extends DataTreeViewerLoader
{
/** The groups or experimenters to remove. */
private List<DataObject> values;
/** Handle to the asynchronous call so that we can cancel it. */
private CallHandle handle;
/**
* Creates a new instance.
*
* @param viewer The Editor this data loader is for.
* Mustn't be <code>null</code>.
* @param ctx The security context.
* @param values The groups or experimenters to delete.
*/
public DataObjectRemover(TreeViewer viewer, SecurityContext ctx,
List<DataObject> values)
{
super(viewer, ctx);
if (values == null)
throw new IllegalArgumentException("No object to delete");
this.values = values;
}
/**
* Deletes the objects.
* @see DataTreeViewerLoader#load()
*/
public void load()
{
handle = adminView.deleteObjects(ctx, values, this);
}
/**
* Cancels the data loading.
* @see DataTreeViewerLoader#cancel()
*/
public void cancel() { handle.cancel(); }
/**
* Feeds the result back to the viewer.
* @see DataTreeViewerLoader#handleResult(Object)
*/
public void handleResult(Object result)
{
if (viewer.getState() == TreeViewer.DISCARDED) return; //Async cancel.
viewer.onNodesDeleted((Collection<DataObject>) result);
}
}