/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.uima.caseditor.ui.corpusview;
import java.util.List;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.Assert;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.dnd.Clipboard;
import org.eclipse.swt.dnd.FileTransfer;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.actions.CopyFilesAndFoldersOperation;
import org.eclipse.ui.actions.CopyProjectOperation;
import org.eclipse.ui.part.ResourceTransfer;
final class PasteAction extends ResourceAction
{
private Shell mShell;
private Clipboard mClipboard;
/**
* Initializes the current instance.
*
* @param shell
* @param clipboard
*/
public PasteAction(Shell shell, Clipboard clipboard) {
super("Paste");
if (shell == null || clipboard == null) {
throw new IllegalArgumentException();
}
mShell = shell;
mClipboard = clipboard;
}
/**
* Locates the new parent resource for the pasted ones.
*
* If currently selected resource is a file, the parent of the file is returned.
*
* @return
*/
private IContainer getNewParent() {
List<IResource> selection = getSelectedResources();
Assert.isTrue(selection.size() > 0);
IContainer result;
if (selection.get(0) instanceof IFile) {
result = ((IFile) selection.get(0)).getParent();
} else {
result = (IContainer) selection.get(0);
}
return result;
}
@Override
public void run() {
IResource[] resourceData = (IResource[]) mClipboard.getContents(ResourceTransfer.getInstance());
if (resourceData != null && resourceData.length > 0) {
// resource always contains either projects or files and folders
if (resourceData[0].getType() != IResource.PROJECT) {
CopyFilesAndFoldersOperation operation = new CopyFilesAndFoldersOperation(mShell);
operation.copyResources(resourceData, getNewParent());
} else {
for (IResource element : resourceData) {
new CopyProjectOperation(mShell).copyProject((IProject) element);
}
}
return;
} else {
String[] fileData = (String[]) mClipboard.getContents(FileTransfer.getInstance());
if (fileData != null && fileData.length > 0) {
new CopyFilesAndFoldersOperation(mShell).copyFiles(fileData, getNewParent());
}
}
}
@Override
protected boolean updateSelection(IStructuredSelection selection) {
IResource[] resources = (IResource[]) mClipboard
.getContents(ResourceTransfer.getInstance());
String[] files = (String[]) mClipboard.getContents(FileTransfer.getInstance());
if (resources == null && files == null) {
return false;
}
// else if (resources.length == 0 && files.length == 0) {
// return false;
// }
if (resources != null ) {
if (resources[0].getType() == IResource.PROJECT) {
for (IResource resource : resources) {
if (resource.getType() == IResource.PROJECT
&& !((IProject) resource).isOpen()) {
return false;
}
}
return true;
}
if (getSelectedNonResources().size() > 0) {
return false;
} else if (getSelectedResources().size() != 1) {
return false;
}
// linked resources are not supported
for (IResource resource : resources) {
if (resource.isLinked()) {
return false;
}
}
// if parent is project make sure its open
IResource parent = getNewParent();
if (parent instanceof IProject) {
IProject parentProject = (IProject) parent;
if (!parentProject.isOpen()) {
return false;
}
}
// do not copy folder to itself
for (IResource resource : resources) {
if (resource.equals(parent)) {
return false;
}
}
}
return true;
}
}