/*
*------------------------------------------------------------------------------
* Copyright (C) 2006-2009 University of Dundee. All rights reserved.
*
*
* 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
* (at your option) any later version.
* 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
package org.openmicroscopy.shoola.agents.imviewer;
import java.util.Collection;
import org.openmicroscopy.shoola.agents.imviewer.view.ImViewer;
import omero.gateway.SecurityContext;
import org.openmicroscopy.shoola.env.data.views.CallHandle;
import omero.gateway.model.DataObject;
import omero.gateway.model.ImageData;
import omero.gateway.model.PlateData;
/**
* Loads the measurements associated to the specified object.
*
* @author Jean-Marie Burel
* <a href="mailto:j.burel@dundee.ac.uk">j.burel@dundee.ac.uk</a>
* @author Donald MacDonald
* <a href="mailto:donald@lifesci.dundee.ac.uk">donald@lifesci.dundee.ac.uk</a>
* @version 3.0
* @since 3.0-Beta4
*/
public class MeasurementsLoader
extends DataLoader
{
/** The object to handle. */
private DataObject object;
/** Handle to the asynchronous call so that we can cancel it. */
private CallHandle handle;
/**
* Checks the passed type if supported.
*
* @param value The value to handle.
*/
private void checkType(DataObject value)
{
if (value instanceof PlateData) return;
if (value instanceof ImageData) return;
throw new IllegalArgumentException("Type not supported.");
}
/**
* Creates a new instance.
*
* @param model Reference to the model.
* @param ctx The security context.
* @param object The object.
*/
public MeasurementsLoader(ImViewer model, SecurityContext ctx,
DataObject object)
{
super(model, ctx);
checkType(object);
this.object = object;
}
/**
* Loads the measurements related to the passed object.
* @see DataLoader#load()
*/
public void load()
{
long userID = ImViewerAgent.getUserDetails().getId();
handle = mhView.loadROIMeasurement(ctx, object, userID, this);
}
/**
* Cancels the ongoing data retrieval.
* @see DataLoader#cancel()
*/
public void cancel() { handle.cancel(); }
/**
* Feeds the result back to the viewer.
* @see DataLoader#handleResult(Object)
*/
public void handleResult(Object result)
{
if (viewer.getState() == ImViewer.DISCARDED) return; //Async cancel.
viewer.setMeasurements((Collection) result);
}
}