RootTreeNode.java

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package jsettlers.main.swing.foldertree;

import java.util.concurrent.ExecutorService;

import javax.swing.tree.DefaultTreeModel;

/**
 * Root node of the tree, with the functionality to load from filesystem and display blocking panel
 * 
 * Usually control operation and model should not be mixed, but in this case it's the easyest solution, and its only data loading, not really
 * controlling
 * 
 * @author Andreas Butti
 */
public class RootTreeNode extends FilesystemTreeNode {

	private final ExecutorService executorService;
	/**
	 * Tree model to fire update events
	 */
	private DefaultTreeModel model;

	/**
	 * Constructor
	 */
	public RootTreeNode(ExecutorService executorService) {
		super(null);
		this.executorService = executorService;
		loaded = true;
	}

	/**
	 * @param model
	 *            Tree model to fire update events
	 */
	public void setModel(DefaultTreeModel model) {
		this.model = model;
	}

	/**
	 * Does the loading task asynchronously
	 * 
	 * @param node
	 *            Node to load
	 */
	public void loadAsynchron(final FilesystemTreeNode node) {
		executorService.submit(new Runnable() {
			@Override
			public void run() {
				node.loadChildrenNodesAsync();
			}
		});
	}

	public void nodeStructureChanged(FilesystemTreeNode node) {
		model.nodeStructureChanged(node);
	}
}