package org.eclipse.linuxtools.internal.docker.ui;
/*******************************************************************************
* Copyright (c) 2000, 2014, 2016 IBM Corporation and others.
* 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:
* IBM Corporation - initial API and implementation
* Red Hat Inc. - modified to use with Docker Tooling
*******************************************************************************/
import java.util.Iterator;
import java.util.List;
import org.eclipse.jface.operation.ModalContext;
import org.eclipse.ui.dialogs.FileSystemElement;
import org.eclipse.ui.wizards.datatransfer.IImportStructureProvider;
/**
* The PopulateFilesOperation is an operation used to populate a
* FileSystemElement one level deep rather than the whole way.
*/
public class PopulateRootOperation extends SelectFilesOperation {
/**
* Create a new <code>PopulateFilesOperation</code>.
*
* @param rootObject
* the object to be populated
* @param structureProvider
* the object that defines how we are to populate it.
*/
public PopulateRootOperation(Object rootObject,
IImportStructureProvider structureProvider) {
super(rootObject, structureProvider);
}
/**
* Creates and returns a <code>FileSystemElement</code> if the specified
* file system object merits one. The criteria for this are: - if the file
* system object is a container then it must have either a child container
* or an associated file - if the file system object is a file then it must
* have an extension suitable for selection
*/
@Override
protected FileSystemElement createElement(FileSystemElement parent,
Object fileSystemObject) throws InterruptedException {
// Iterate on level deep
return createElement(parent, fileSystemObject, 2);
}
/**
* Creates and returns a <code>FileSystemElement</code> if the specified
* file system object merits one. The criteria for this are: - if the file
* system object is a container then it must have either a child container
* or an associated file - if the file system object is a file then it must
* have an extension suitable for selection recurse down for depth to
* populate children
*/
@SuppressWarnings("rawtypes")
protected FileSystemElement createElement(FileSystemElement parent,
Object fileSystemObject, int depth) throws InterruptedException {
ModalContext.checkCanceled(monitor);
boolean isContainer = provider.isFolder(fileSystemObject);
String elementLabel = parent == null
? provider.getFullPath(fileSystemObject)
: provider.getLabel(fileSystemObject);
MinimizedFileSystemElement result = new MinimizedFileSystemElement(
elementLabel, parent, isContainer);
result.setFileSystemObject(fileSystemObject);
if (isContainer && depth > 0) {
List children = provider.getChildren(fileSystemObject);
if (children != null) {
Iterator childrenEnum = children.iterator();
while (childrenEnum.hasNext()) {
createElement(result, childrenEnum.next(), depth - 1);
}
}
result.setPopulated();
}
return result;
}
}