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/*******************************************************************************
* Copyright (c) 2003, 2004 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
*******************************************************************************/
package org.eclipse.jst.j2ee.internal.wizard;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.ui.dialogs.FileSystemElement;
import org.eclipse.ui.model.AdaptableList;
import org.eclipse.ui.wizards.datatransfer.IImportStructureProvider;
/**
* The <code>MinimizedFileSystemElement</code> is a <code>FileSystemElement</code> that knows if
* it has been populated or not.
*/
class MinimizedFileSystemElement extends FileSystemElement {
private boolean populated = false;
private String packageBaseDirName = null;
/**
* Create a <code>MinimizedFileSystemElement</code> with the supplied name and parent.
*
* @param name
* the name of the file element this represents
* @param parent
* the containing parent
* @param isDirectory
* indicated if this could have children or not
*/
MinimizedFileSystemElement(String name, org.eclipse.ui.dialogs.FileSystemElement parent, boolean isDirectory) {
super(name, parent, isDirectory);
}
public void setPackageBaseDirName(String s) {
packageBaseDirName = s;
}
public void addChild(FileSystemElement child) {
if (child.isDirectory()) {
super.addChild(child);
} else {
if (child.getFileNameExtension().equals("class")) { //$NON-NLS-1$
super.addChild(child);
}
}
}
/**
* Returns a list of the files that are immediate children. Use the supplied provider if it
* needs to be populated. of this folder.
*/
public AdaptableList getFiles(IImportStructureProvider provider) {
if (!populated)
populate(provider);
return super.getFiles();
}
/**
* Returns a list of the folders that are immediate children. Use the supplied provider if it
* needs to be populated. of this folder.
*/
public AdaptableList getFolders(IImportStructureProvider provider) {
if (!populated)
populate(provider);
return super.getFolders();
}
/**
* Return whether or not population has happened for the receiver.
*/
boolean isPopulated() {
return this.populated;
}
/**
* Return whether or not population has not happened for the receiver.
*/
boolean notPopulated() {
return !this.populated;
}
/**
* Populate the files and folders of the receiver using the suppliec structure provider.
*
* @param provider
* org.eclipse.ui.wizards.datatransfer.IImportStructureProvider
*/
private void populate(IImportStructureProvider provider) {
Object fileSystemObject = getFileSystemObject();
List children = provider.getChildren(fileSystemObject);
if (children == null)
children = new ArrayList(1);
Iterator childrenEnum = children.iterator();
while (childrenEnum.hasNext()) {
Object child = childrenEnum.next();
String elementLabel = provider.getLabel(child);
if (elementLabel.equals(packageBaseDirName) || packageBaseDirName == null) {
//Create one level below
MinimizedFileSystemElement result = new MinimizedFileSystemElement(elementLabel, this, provider.isFolder(child));
result.setFileSystemObject(child);
}
}
setPopulated();
}
/**
* Set whether or not population has happened for the receiver to true.
*/
void setPopulated() {
this.populated = true;
}
}
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