praktikum-holons/src/ui/view/outliner/TreeUtils.java

package ui.view.outliner;

import javax.swing.ImageIcon;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeCellRenderer;

import util.ImageImport;

public class TreeUtils {
	static void signIconsForTree(JTree tree) {
		ImageIcon ClosedIcon = new ImageIcon(ImageImport.loadImage("/Button_Images/Close.png",9,9));
		ImageIcon OpenIcon = new ImageIcon(ImageImport.loadImage("/Button_Images/Open.png",9,9));
		ImageIcon LeafIcon = new ImageIcon(ImageImport.loadImage("/Button_Images/Leaf.png",9,9));
		if (ClosedIcon != null && OpenIcon != null && LeafIcon!= null) {
		    DefaultTreeCellRenderer renderer = 
		        new DefaultTreeCellRenderer();
		    renderer.setClosedIcon(null);
		    renderer.setOpenIcon(null);
		    renderer.setLeafIcon(LeafIcon);
		    tree.setCellRenderer(renderer);
		}
	}
	
	public static void expand(JTree tree) {
		for (int i = 0; i < tree.getRowCount(); i++) {
			tree.expandRow(i);
		}
	}
	static JScrollPane makePanelFromNode(DefaultMutableTreeNode node) {
		JTree stateTree = new JTree(node);
		return makeDefaultPanelFromTree(stateTree);
	}

	
	public static JScrollPane makePanelFromTree(JTree stateTree) {
		return new JScrollPane(stateTree);
	}
	
	public static JScrollPane makeDefaultPanelFromTree(JTree stateTree) {
		stateTree.setRootVisible(false);
		TreeUtils.signIconsForTree(stateTree);
		TreeUtils.expand(stateTree);
		return new JScrollPane(stateTree);
	}
	
}