/* uDig - User Friendly Desktop Internet GIS client
* http://udig.refractions.net
* (C) 2012, Refractions Research Inc.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* (http://www.eclipse.org/legal/epl-v10.html), and the Refractions BSD
* License v1.0 (http://udig.refractions.net/files/bsd3-v10.html).
*/
package org.locationtech.udig.project.command.map;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.locationtech.udig.project.ILayer;
import org.locationtech.udig.project.command.AbstractCommand;
import org.locationtech.udig.project.command.UndoableCommand;
import org.locationtech.udig.project.internal.LayerLegendItem;
import org.locationtech.udig.project.internal.Map;
import org.eclipse.jface.viewers.IStructuredSelection;
/**
* Abstract parent class for layer move commands.
*
* @author Naz Chan (LISAsoft)
* @since 1.3.1
*/
public abstract class AbstractLayerMoveCommand extends AbstractCommand implements UndoableCommand {
private List<Integer> index;
private List<ILayer> selection;
public AbstractLayerMoveCommand(Map map, ILayer layer) {
selection = new ArrayList<ILayer>();
selection.add(layer);
index = new ArrayList<Integer>();
index.add(getIndex(map, layer));
}
public AbstractLayerMoveCommand(Map map, IStructuredSelection structuredSelection) {
selection = new ArrayList<ILayer>();
index = new ArrayList<Integer>();
if (structuredSelection.isEmpty()) {
return;
}
for (Iterator<?> iter = structuredSelection.iterator(); iter.hasNext();) {
final Object item = iter.next();
ILayer layer = null;
if (item instanceof ILayer) {
layer = (ILayer) item;
} else if (item instanceof LayerLegendItem) {
final LayerLegendItem layerItem = (LayerLegendItem) item;
layer = layerItem.getLayer();
}
if (layer != null) {
selection.add(layer);
index.add(getIndex(map, layer));
}
}
}
public AbstractLayerMoveCommand(Map map, List<ILayer> selection) {
this.selection = selection;
index = new ArrayList<Integer>();
for (ILayer iLayer : selection) {
final ILayer layer = (ILayer) iLayer;
index.add(getIndex(map, layer));
}
}
public List<ILayer> getSelection() {
return selection;
}
public List<Integer> getIndex() {
return index;
}
private Integer getIndex(Map map, ILayer layer) {
return Integer.valueOf(map.getLayersInternal().indexOf(layer));
}
}