/******************************************************************************
* Copyright (c) 2014 Oracle
* 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:
* Shenxue Zhou - initial implementation and ongoing maintenance
* Konstantin Komissarchik - miscellaneous improvements
******************************************************************************/
package org.eclipse.sapphire.samples.map.internal;
import static org.eclipse.sapphire.util.StringUtil.UTF8;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.sapphire.LoggingService;
import org.eclipse.sapphire.Sapphire;
import org.eclipse.sapphire.samples.map.Location;
import org.eclipse.sapphire.samples.map.Map;
import org.eclipse.sapphire.ui.DragAndDropService;
import org.eclipse.sapphire.ui.Point;
import org.eclipse.sapphire.ui.diagram.editor.DiagramNodePart;
import org.eclipse.sapphire.ui.diagram.editor.SapphireDiagramEditorPagePart;
/**
* @author <a href="mailto:shenxue.zhou@oracle.com">Shenxue Zhou</a>
* @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a>
*/
public class MapDragAndDropService extends DragAndDropService
{
@Override
public boolean droppable( final DropContext context )
{
return context.object() instanceof IFile;
}
@Override
public void drop( final DropContext context )
{
final IFile file = (IFile) context.object();
final List<String> locations = new ArrayList<String>();
InputStream in = null;
try
{
in = file.getContents();
final BufferedReader br = new BufferedReader( new InputStreamReader( in, UTF8 ) );
for( String line = br.readLine(); line != null; line = br.readLine() )
{
line = line.trim();
if( line.length() > 0 )
{
locations.add( line );
}
}
}
catch( CoreException e )
{
Sapphire.service( LoggingService.class ).log( e );
}
catch( IOException e )
{
Sapphire.service( LoggingService.class ).log( e );
}
finally
{
if( in != null )
{
try
{
in.close();
}
catch( IOException e ) {}
}
}
if( ! locations.isEmpty() )
{
final SapphireDiagramEditorPagePart diagram = context( SapphireDiagramEditorPagePart.class );
final Map map = context( Map.class );
final Point initialDropPosition = context.position();
int x = initialDropPosition.getX();
int y = initialDropPosition.getY();
for( String locationName : locations )
{
if( ! map.hasLocation( locationName ) )
{
final Location location = map.getLocations().insert();
location.setName( locationName );
final DiagramNodePart locationNodePart = diagram.getDiagramNodePart(location);
locationNodePart.setNodeBounds( x, y );
x += 50;
y += 50;
}
}
}
}
}