grouptreerenderer.java

Java的面向对象数据库系统的源代码

// You can redistribute this software and/or modify it under the terms of
// the Ozone Library License version 1 published by ozone-db.org.
//
// The original code and portions created by SMB are
// Copyright (C) 1997-@year@ by SMB GmbH. All rights reserved.
//
package org.ozoneDB.adminGui.feature.account.groups;

import java.awt.Color;
import java.awt.Component;
import java.awt.Font;
import javax.swing.ImageIcon;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellRenderer;

import org.ozoneDB.adminGui.res.Images;
import org.ozoneDB.adminGui.feature.account.Account;
import org.ozoneDB.adminGui.feature.account.AccountItem;
import org.ozoneDB.adminGui.feature.account.users.UserItem;


//#############################################################################
/**
 * This class is used to manage the groups tree renderer.
 *
 * @author  <p align=center>Ibsen Ramos-Bonilla
 * <br>Copyright &copy 1997-@year@ by SMB GmbH. All Rights Reserved.</p>
 *
 * @version 1.0
 */
//#############################################################################

public class GroupTreeRenderer extends DefaultTreeCellRenderer {

    /**
     * This method sets the icons based on the node type.
     *
     * @param type - the node type.
     */
    private void setIcons(int type) {
        ImageIcon nodeIcon;

        //set icon based on the node type
        switch (type) {
            case Account.NODE_IS_USER:
                nodeIcon = new ImageIcon(Images.TREE_USER, null);
                break;
            case Account.NODE_IS_GROUP:
                nodeIcon = new ImageIcon(Images.TREE_GROUP, null);
                break;
            case Account.NODE_IS_ACCOUNT:
                nodeIcon = new ImageIcon(Images.TREE_GROUPS, null);
                break;
            default:
                nodeIcon = null;
                break;
        }

        //set the icons based on the selected image
        this.setIcon(nodeIcon);
    } //-----  setTaxonomyIcons  -----//

    /**
     * The method used to create a new image item rendition.
     *
     * @param tree - the tree associated with this renderer.
     * @param value - the value object returned from the tree.
     * @param sel - determines if a node was selected in the tree.
     * @param expanded - determines if the node is expanded.
     * @param leaf - determines if the node is a leaf node.
     * @param row - returns the row number of the node.
     * @param hasFocus - determines if a tree node has the focus.
     * @return Component - the created render for the component.
     */
    public Component getTreeCellRendererComponent(JTree tree, Object value,
                                                  boolean sel, boolean expanded, boolean leaf, int row, boolean hasFocus) {
        super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf,
                row, hasFocus);

        //set the font
        this.setForeground(Color.black);
        this.setFont(this.getFont().deriveFont(Font.PLAIN));

        //working with an account branch
        if (value instanceof UserItem) {
            setIcons(Account.NODE_IS_USER);

            if (((UserItem) value).isAdmin()) {
                this.setForeground(Color.red);
                this.setFont(this.getFont().deriveFont(Font.BOLD));
            }
        }

        //working with a group branch
        else if (value instanceof GroupItem) {
            setIcons(Account.NODE_IS_GROUP);

            if (((GroupItem) value).getId() == 0) {
                this.setForeground(Color.red);
                this.setFont(this.getFont().deriveFont(Font.BOLD));
            }

            this.setText(value.toString() + "  [" +
                    ((GroupItem) value).getId() + "]");
        }

        //working with an account branch
        else if (value instanceof AccountItem)
            setIcons(Account.NODE_IS_ACCOUNT);

        //bad branch
        else
            setIcons(-99);

        //return the component
        return this;
    }

} //--------------------------------- E O F -----------------------------------