Java JTree getExpansionState(JTree tree, int row)

Description

get Expansion State

License

Open Source License

Declaration

public static String getExpansionState(JTree tree, int row) 

Method Source Code

//package com.java2s;
//License from project: MIT License 

import javax.swing.JTree;
import javax.swing.tree.TreePath;

public class Main {
    public static String getExpansionState(JTree tree, int row) {
        TreePath rowPath = tree.getPathForRow(row);
        StringBuffer buf = new StringBuffer();
        int rowCount = tree.getRowCount();
        for (int i = row; i < rowCount; i++) {
            TreePath path = tree.getPathForRow(i);
            if (i == row || isDescendant(path, rowPath)) {
                if (tree.isExpanded(path))
                    buf.append("," + String.valueOf(i - row));
            } else
                break;
        }/*w  w w.ja  v  a 2  s  . c om*/
        return buf.toString();
    }

    public static boolean isDescendant(TreePath path1, TreePath path2) {
        int count1 = path1.getPathCount();
        int count2 = path2.getPathCount();
        if (count1 <= count2)
            return false;
        while (count1 != count2) {
            path1 = path1.getParentPath();
            count1--;
        }
        return path1.equals(path2);
    }
}

Related

1. disposeExpressionsTree()
2. enableAutoExpansion(final JTree tree)
3. findByName(JTree tree, String[] names)
4. findTree(Container container)
5. getCurrentWidth(JTree tree, int row)
6. getProjectTree()
7. getSelectionFromTree(JTree tree)
8. getStopRow(JTree tree, int startRow)
9. getTreeImage(String imageName)