/*
* org.openmicroscopy.shoola.agents.treeviewer.FilesChecker
*
*------------------------------------------------------------------------------
* 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.
*
*------------------------------------------------------------------------------
*/
package org.openmicroscopy.shoola.agents.treeviewer;
//Java imports
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
//Third-party libraries
//Application-internal dependencies
import org.openmicroscopy.shoola.agents.treeviewer.browser.Browser;
import org.openmicroscopy.shoola.agents.util.browser.TreeImageNode;
import omero.gateway.SecurityContext;
import org.openmicroscopy.shoola.env.data.views.CallHandle;
/**
* Controls if the passed nodes hosted files that can be imported.
*
* @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
* <small>
* (<b>Internal version:</b> $Revision: $Date: $)
* </small>
* @since 3.0-Beta4
*/
public class FilesChecker
extends DataBrowserLoader
{
/** Handle to the asynchronous call so that we can cancel it. */
private CallHandle handle;
/** The nodes to handle. */
private List<TreeImageNode> nodes;
/** Convenience map to update the status of the node. */
private Map<File, TreeImageNode> map;
/**
* Creates a new instance.
*
* @param viewer The viewer this data loader is for.
* Mustn't be <code>null</code>.
* @param ctx The security context.
* @param nodes The collection of nodes to handles.
*/
public FilesChecker(Browser viewer, SecurityContext ctx,
List<TreeImageNode> nodes)
{
super(viewer, ctx);
if (nodes == null)
throw new IllegalArgumentException("No nodes specified.");
this.nodes = nodes;
}
/**
* Controls if the passed nodes host files of a supported format.
* @see DataBrowserLoader#load()
*/
public void load()
{
List<File> list = new ArrayList<File>();
map = new HashMap<File, TreeImageNode>();
Iterator<TreeImageNode> i = nodes.iterator();
TreeImageNode node;
Object o;
while (i.hasNext()) {
node = i.next();
o = node.getUserObject();
if (o instanceof File) {
map.put((File) o, node);
list.add((File) o);
}
}
handle = dmView.checkFileFormat(list, this);
}
/**
* Cancels the data loading.
* @see DataBrowserLoader#cancel()
*/
public void cancel() { handle.cancel(); }
/**
* Feeds the result back to the viewer.
* @see DataBrowserLoader#handleResult(Object)
*/
public void handleResult(Object result)
{
if (viewer.getState() == Browser.DISCARDED) return; //Async cancel.
Map m = (Map) result;
//The collection of files formats not supported.
List l = (List) m.get(Boolean.valueOf(false));
if (l != null && l.size() > 0) {
Iterator i = l.iterator();
File f;
while (i.hasNext()) {
f = (File) i.next();
map.get(f).setSelectable(false);
}
//repaint
viewer.getUI().repaint();
}
}
}