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Java > Open Source Codes > org > apache > log4j > lf5 > viewer > categoryexplorer > CategoryNodeRenderer


1 /*
2  * Copyright 1999-2005 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package org.apache.log4j.lf5.viewer.categoryexplorer;
17
18 import javax.swing.*;
19 import javax.swing.tree.DefaultTreeCellRenderer JavaDoc;
20 import java.awt.*;
21 import java.net.URL JavaDoc;
22
23 /**
24  * CategoryNodeRenderer
25  *
26  * @author Michael J. Sikorsky
27  * @author Robert Shaw
28  */
29
30 // Contributed by ThoughtWorks Inc.
31
32 public class CategoryNodeRenderer extends DefaultTreeCellRenderer JavaDoc {
33   //--------------------------------------------------------------------------
34 // Constants:
35 //--------------------------------------------------------------------------
36
37   public static final Color FATAL_CHILDREN = new Color(189, 113, 0);
38
39   //--------------------------------------------------------------------------
40 // Protected Variables:
41 //--------------------------------------------------------------------------
42 protected JCheckBox _checkBox = new JCheckBox();
43   protected JPanel _panel = new JPanel();
44   protected static ImageIcon _sat = null;
45 // protected JLabel _label = new JLabel();
46
47   //--------------------------------------------------------------------------
48 // Private Variables:
49 //--------------------------------------------------------------------------
50
51   //--------------------------------------------------------------------------
52 // Constructors:
53 //--------------------------------------------------------------------------
54 public CategoryNodeRenderer() {
55     _panel.setBackground(UIManager.getColor("Tree.textBackground"));
56
57     if (_sat == null) {
58       // Load the satellite image.
59 String JavaDoc resource =
60           "/org/apache/log4j/lf5/viewer/images/channelexplorer_satellite.gif";
61       URL JavaDoc satURL = getClass().getResource(resource);
62
63       _sat = new ImageIcon(satURL);
64     }
65
66     setOpaque(false);
67     _checkBox.setOpaque(false);
68     _panel.setOpaque(false);
69
70     // The flowlayout set to LEFT is very important so that the editor
71 // doesn't jump around.
72 _panel.setLayout(new FlowLayout(FlowLayout.LEFT, 0, 0));
73     _panel.add(_checkBox);
74     _panel.add(this);
75
76     setOpenIcon(_sat);
77     setClosedIcon(_sat);
78     setLeafIcon(_sat);
79   }
80
81   //--------------------------------------------------------------------------
82 // Public Methods:
83 //--------------------------------------------------------------------------
84 public Component getTreeCellRendererComponent(
85       JTree tree, Object JavaDoc value,
86       boolean selected, boolean expanded,
87       boolean leaf, int row,
88       boolean hasFocus) {
89
90     CategoryNode node = (CategoryNode) value;
91     //FileNode node = (FileNode)value;
92 //String s = tree.convertValueToText(value, selected,
93 // expanded, leaf, row, hasFocus);
94
95     super.getTreeCellRendererComponent(
96         tree, value, selected, expanded,
97         leaf, row, hasFocus);
98
99     if (row == 0) {
100       // Root row -- no check box
101 _checkBox.setVisible(false);
102     } else {
103       _checkBox.setVisible(true);
104       _checkBox.setSelected(node.isSelected());
105     }
106     String JavaDoc toolTip = buildToolTip(node);
107     _panel.setToolTipText(toolTip);
108     if (node.hasFatalChildren()) {
109       this.setForeground(FATAL_CHILDREN);
110     }
111     if (node.hasFatalRecords()) {
112       this.setForeground(Color.red);
113     }
114
115     return _panel;
116   }
117
118   public Dimension getCheckBoxOffset() {
119     return new Dimension(0, 0);
120   }
121
122   //--------------------------------------------------------------------------
123 // Protected Methods:
124 //--------------------------------------------------------------------------
125
126   protected String JavaDoc buildToolTip(CategoryNode node) {
127     StringBuffer JavaDoc result = new StringBuffer JavaDoc();
128     result.append(node.getTitle()).append(" contains a total of ");
129     result.append(node.getTotalNumberOfRecords());
130     result.append(" LogRecords.");
131     result.append(" Right-click for more info.");
132     return result.toString();
133   }
134   //--------------------------------------------------------------------------
135 // Private Methods:
136 //--------------------------------------------------------------------------
137
138   //--------------------------------------------------------------------------
139 // Nested Top-Level Classes or Interfaces:
140 //--------------------------------------------------------------------------
141
142 }
143
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