/*******************************************************************************
* Copyright 2012 Geoscience Australia
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
package au.gov.ga.earthsci.layer.ui.handlers;
import java.io.File;
import javax.inject.Inject;
import javax.inject.Named;
import org.eclipse.e4.core.contexts.IEclipseContext;
import org.eclipse.e4.core.di.annotations.CanExecute;
import org.eclipse.e4.core.di.annotations.Execute;
import org.eclipse.e4.core.di.annotations.Optional;
import org.eclipse.e4.ui.services.IServiceConstants;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.dnd.Clipboard;
import org.eclipse.swt.dnd.FileTransfer;
import au.gov.ga.earthsci.layer.IPersistentLayer;
import au.gov.ga.earthsci.layer.intent.IntentLayerLoader;
import au.gov.ga.earthsci.layer.tree.ILayerNode;
import au.gov.ga.earthsci.layer.tree.ILayerTreeNode;
import au.gov.ga.earthsci.layer.tree.LayerNode;
import au.gov.ga.earthsci.layer.ui.dnd.LayerTransfer;
import au.gov.ga.earthsci.layer.ui.dnd.LayerTransferData;
import au.gov.ga.earthsci.layer.ui.dnd.LayerTransferData.TransferredLayer;
import au.gov.ga.earthsci.layer.worldwind.ITreeModel;
/**
* Handles paste commands for the layer tree.
*
* @author Michael de Hoog (michael.dehoog@ga.gov.au)
*/
public class PasteHandler
{
@Inject
private ITreeModel model;
@Inject
private IEclipseContext context;
@Execute
public void execute(@Optional @Named(IServiceConstants.ACTIVE_SELECTION) ILayerTreeNode target, TreeViewer viewer,
Clipboard clipboard)
{
if (target == null)
{
target = model.getRootNode();
}
LayerTransferData data = (LayerTransferData) clipboard.getContents(LayerTransfer.getInstance());
if (data != null)
{
for (TransferredLayer layer : data.getLayers())
{
ILayerTreeNode node = layer.getNode();
target.addChild(node);
viewer.add(target, node);
viewer.reveal(node);
initializeAllLayers(node, context);
}
}
String[] filenames = (String[]) clipboard.getContents(FileTransfer.getInstance());
if (filenames != null)
{
for (String filename : filenames)
{
File file = new File(filename);
if (file.isFile())
{
LayerNode node = new LayerNode();
node.setName(file.getName());
node.setEnabled(true);
target.addChild(node);
viewer.add(target, node);
viewer.reveal(node);
IntentLayerLoader.load(file.toURI(), node, context);
}
}
}
}
public static void initializeAllLayers(ILayerTreeNode node, IEclipseContext context)
{
if (node instanceof ILayerNode)
{
final ILayerNode layerNode = (ILayerNode) node;
IPersistentLayer layer = layerNode.getLayer();
layer.initialize(layerNode, context);
}
for (ILayerTreeNode child : node.getChildren())
{
initializeAllLayers(child, context);
}
}
@CanExecute
public boolean canExecute(Clipboard clipboard)
{
LayerTransferData data = (LayerTransferData) clipboard.getContents(LayerTransfer.getInstance());
if (data != null)
{
return true;
}
String[] filenames = (String[]) clipboard.getContents(FileTransfer.getInstance());
if (filenames != null)
{
return true;
}
return false;
}
}