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Open Source (LGPL) JavaFX PDF Viewer

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/*
 * ===========================================
 * Java Pdf Extraction Decoding Access Library
 * ===========================================
 *
 * Project Info:  http://www.idrsolutions.com
 * Help section for developers at http://www.idrsolutions.com/support/
 *
 * (C) Copyright 1997-2017 IDRsolutions and Contributors.
 *
 * This file is part of JPedal/JPDF2HTML5
 *
 @LICENSE@
 *
 * ---------------
 * SignaturesTreeCellRenderer.java
 * ---------------
 */
package org.jpedal.examples.viewer.gui;

import java.awt.Color;
import java.awt.Component;
import java.awt.Font;
import java.net.URL;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeCellRenderer;

public class SignaturesTreeCellRenderer extends DefaultTreeCellRenderer {
    private Icon icon;

    @Override
    public Icon getLeafIcon() {
        return icon;
    }

    @Override
    public Component getTreeCellRendererComponent(final JTree tree, Object value, final boolean isSelected,
                                                  final boolean expanded, final boolean leaf, final int row, final boolean hasFocus) {

        final DefaultMutableTreeNode node = ((DefaultMutableTreeNode) value);
        value = node.getUserObject();
        final int level = node.getLevel();

        final String s = value.toString();
        icon = null;
        Font treeFont = tree.getFont();

        if (level == 2) {
            final DefaultMutableTreeNode parent = (DefaultMutableTreeNode) node.getParent();
            final String text = parent.getUserObject().toString();
            if (text.equals("The following signature fields are not signed")) {
                final URL resource = getClass().getResource("/org/jpedal/examples/viewer/res/unlock.png");
                icon = new ImageIcon(resource);
            } else {
                final URL resource = getClass().getResource("/org/jpedal/examples/viewer/res/lock.gif");
                icon = new ImageIcon(resource);
                treeFont = new Font(treeFont.getFamily(), Font.BOLD, treeFont.getSize());
            }
        }

        setFont(treeFont);
        setText(s);
        setIcon(icon);
        if (isSelected) {
            setBackground(new Color(236, 233, 216));
            setForeground(Color.BLACK);
        } else {
            setBackground(tree.getBackground());
            setForeground(tree.getForeground());
        }
        setEnabled(tree.isEnabled());

        setOpaque(true);

        return this;
    }
}