/*
* 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.internal.commands;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.locationtech.udig.catalog.IGeoResource;
import org.locationtech.udig.project.command.AbstractCommand;
import org.locationtech.udig.project.command.UndoableMapCommand;
import org.locationtech.udig.project.internal.Layer;
import org.locationtech.udig.project.internal.LayerFactory;
import org.locationtech.udig.project.internal.Map;
import org.locationtech.udig.project.internal.Messages;
import org.locationtech.udig.project.internal.ProjectPlugin;
import org.locationtech.udig.project.internal.Trace;
import org.eclipse.core.runtime.IProgressMonitor;
/**
* Used to process a series of objects into layers that can be inserted into the Map Layer list.
*
* @author jody
* @since 1.2.0
*/
public class AddLayersCommand extends AbstractCommand implements UndoableMapCommand {
/** List of resources being turned into layers.*/
Collection<?> resources;
/** List of created layers */
List<Layer> layers;
/** target index where layers will be added; often from a DnD location */
private int index;
/** Referene to the selected Layer obtained from the EditManager */
private Layer selection;
/**
* Creates a the command from a set of
*
* @see Layer or
* @see IGeoResource objects.
* @param resources A list containing a combination of layers or resources.
*/
public AddLayersCommand( Collection<?> resources ) {
this(resources, -1);
}
/**
* Creates a the command from a set of
*
* @see Layer or
* @see IGeoResource objects.
* @param resources A list containing a combination of layers or resources.
*/
public AddLayersCommand( Collection<?> resources, int i ) {
this.resources = resources;
index = i;
}
public void run( IProgressMonitor monitor ) throws Exception {
Map map = getMap();
if (layers == null) {
layers = new ArrayList<Layer>();
LayerFactory layerFactory = map.getLayerFactory();
selection = (Layer) map.getEditManager().getSelectedLayer();
for( Object o : resources ) {
try {
Layer layer = null;
if (o instanceof IGeoResource) {
// ensure that the service is part of the Catalog so that the find method in
// layer turn into layer
IGeoResource resource = (IGeoResource) o;
layer = layerFactory.createLayer(resource);
}
if (o instanceof Layer) {
// leave as is
layer = (Layer) o;
}
if (layer != null) {
layers.add(layer);
}
}
catch (Throwable t){
ProjectPlugin.log("Unable to add "+o,t);
}
}
}
if (!layers.isEmpty()) {
if (index < 0) {
index = map.getLayersInternal().size();
}
trace();
map.getLayersInternal().addAll(index, layers);
map.getEditManagerInternal().setSelectedLayer(layers.get(0));
}
}
private void trace() {
if (ProjectPlugin.isDebugging(Trace.COMMANDS)) {
List<String> ids = new ArrayList<String>();
for( Layer layer : layers ) {
ids.add(layer.getID().toString());
}
ProjectPlugin
.trace(getClass(),
"Adding " + layers.size() + " layers to map:" + getMap().getName() + ". IDs=" + ids, null); //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$
}
}
public String getName() {
return Messages.AddLayersCommand_name;
}
public void rollback( IProgressMonitor monitor ) throws Exception {
getMap().getLayersInternal().removeAll(layers);
getMap().getEditManagerInternal().setSelectedLayer(selection);
layers.clear();
}
public List<Layer> getLayers() {
return layers;
}
}