FileSelectionDialog.java 文件源码

private void setTreeRenderer() {
    fileSystemTree.setCellRenderer(new TreeCellRenderer() {
        public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus) {
            DefaultMutableTreeNode node = (DefaultMutableTreeNode) value;

            if (node.getUserObject() instanceof String)
                return new JLabel();

            Directory content = (Directory) node.getUserObject();
            JLabel icon = new JLabel(value.toString());
            icon.setIcon(fsView.getSystemIcon(content.file));

            return icon;
        }
    });
}