content: /*
   *  Copyright Beijing 58 Information Technology Co.,Ltd.
   *
   *  Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you under the Apache License, Version 2.0 (the
   *  "License"); you may not use this file except in compliance
   *  with the License.  You may obtain a copy of the License at
   *
   *        http://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing,
   *  software distributed under the License is distributed on an
   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   *  KIND, either express or implied.  See the License for the
   *  specific language governing permissions and limitations
   *  under the License.
   */
  package com.bj58.spat.gaea.server.bootstrap.serverframe;
  
  import java.awt.Color;
  import java.awt.Component;
  import java.awt.Dimension;
  import java.awt.Graphics;
  import javax.swing.Icon;
  import javax.swing.JCheckBox;
  import javax.swing.JLabel;
  import javax.swing.JPanel;
  import javax.swing.JTree;
  import javax.swing.UIManager;
  import javax.swing.plaf.ColorUIResource;
  import javax.swing.tree.TreeCellRenderer;
  
  /**
   * CheckNode
   * 
   * @author Service Platform Architecture Team (spat@58.com)
   */
  public class CheckRenderer extends JPanel implements TreeCellRenderer {
  
  	private static final long serialVersionUID = 1L;
  	protected JCheckBox check;
  	protected TreeLabel label;
  
  	public CheckRenderer() {
  		setLayout(null);
  		add(check = new JCheckBox());
  		add(label = new TreeLabel());
  		check.setBackground(UIManager.getColor("Tree.textBackground"));
  	}
  
  	public Component getTreeCellRendererComponent(JTree tree, Object value,
  			boolean isSelected, boolean expanded, boolean leaf, int row,
  			boolean hasFocus) {
  		String stringValue = tree.convertValueToText(value, isSelected, expanded, leaf, row, hasFocus);
  		setEnabled(tree.isEnabled());
  		check.setSelected(((CheckNode) value).isSelected());
  		label.setFont(tree.getFont());
  		label.setText(stringValue);
  		label.setSelected(isSelected);
  		label.setFocus(hasFocus);
  		if (leaf) {
  			label.setIcon(UIManager.getIcon("Tree.leafIcon"));
  		} else if (expanded) {
  			label.setIcon(UIManager.getIcon("Tree.openIcon"));
  		} else {
  			label.setIcon(UIManager.getIcon("Tree.closedIcon"));
  		}
  		return this;
  	}
  
  	public Dimension getPreferredSize() {
  		Dimension d_check = check.getPreferredSize();
  		Dimension d_label = label.getPreferredSize();
  		return new Dimension(d_check.width + d_label.width,
  				(d_check.height < d_label.height ? d_label.height: d_check.height));
  	}
  
  	public void doLayout() {
  		Dimension d_check = check.getPreferredSize();
  		Dimension d_label = label.getPreferredSize();
  		int y_check = 0;
  		int y_label = 0;
  		if (d_check.height < d_label.height) {
  			y_check = (d_label.height - d_check.height) / 2;
  		} else {
  			y_label = (d_check.height - d_label.height) / 2;
  		}
  		check.setLocation(0, y_check);
  		check.setBounds(0, y_check, d_check.width, d_check.height);
  		label.setLocation(d_check.width, y_label);
  		label.setBounds(d_check.width, y_label, d_label.width, d_label.height);
  	}
  
  	public void setBackground(Color color) {
  		if (color instanceof ColorUIResource)
  			color = null;
  		super.setBackground(color);
  	}
  
  	class TreeLabel extends JLabel {
  		private static final long serialVersionUID = 1L;
  		boolean isSelected;
  		boolean hasFocus;
  
  		TreeLabel() {
  		}
  
  		public void setBackground(Color color) {
  			if (color instanceof ColorUIResource)
  				color = null;
  			super.setBackground(color);
  		}
  
  		public void paint(Graphics g) {
  			String str;
  			if ((str = getText()) != null) {
  				if (0 < str.length()) {
  					if (isSelected) {
  						g.setColor(UIManager.getColor("Tree.selectionBackground"));
  					} else {
  						g.setColor(UIManager.getColor("Tree.textBackground"));
  					}
  					Dimension d = getPreferredSize();
  					int imageOffset = 0;
  					Icon currentI = getIcon();
  					if (currentI != null) {
  						imageOffset = currentI.getIconWidth() + Math.max(0, getIconTextGap() - 1);
  					}
  					g.fillRect(imageOffset, 0, d.width - 1 - imageOffset,d.height);
  					if (hasFocus) {
  						g.setColor(UIManager.getColor("Tree.selectionBorderColor"));
  						g.drawRect(imageOffset, 0, d.width - 1 - imageOffset,d.height - 1);
  					}
  				}
  			}
  			super.paint(g);
  		}
  
  		public Dimension getPreferredSize() {
  			Dimension retDimension = super.getPreferredSize();
  			if (retDimension != null) {
  				retDimension = new Dimension(retDimension.width + 3,
  						retDimension.height);
  			}
  			return retDimension;
  		}
  
  		void setSelected(boolean isSelected) {
  			this.isSelected = isSelected;
  		}
  
  		void setFocus(boolean hasFocus) {
  			this.hasFocus = hasFocus;
  		}
  	}
  
  }
  