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root/i-scream/projects/cms/source/conient/uk/org/iscream/cms/conient/datacomponents/CPUDataComponent.java
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Comparing projects/cms/source/conient/uk/org/iscream/cms/conient/datacomponents/CPUDataComponent.java (file contents):
Revision 1.1 by ajm, Mon Jan 22 03:03:39 2001 UTC vs.
Revision 1.6 by ajm, Mon Jan 29 13:58:45 2001 UTC

# Line 1 | Line 1
1   //---PACKAGE DECLARATION---
2 + package uk.ac.ukc.iscream.conient.datacomponents;
3  
4   //---IMPORTS---
5   import javax.swing.JLabel;
6   import java.awt.GridLayout;
7   import javax.swing.JProgressBar;
8 + import javax.swing.SwingUtilities;
9  
10   /**
11   * This is DataComponent specifically for
# Line 14 | Line 16 | import javax.swing.JProgressBar;
16   * @author  $Author$
17   * @version $Id$
18   */
19 < public class CPUDataComponent extends DataComponent {
19 > public class CPUDataComponent extends VisibleDataComponent {
20  
21   //---FINAL ATTRIBUTES---
22  
# Line 32 | Line 34 | public class CPUDataComponent extends DataComponent {
34       * used as label
35       *
36       * @param name the friendly name
37 +     * @param attribute the data attribute we look after
38       */
39 <    public CPUDataComponent(String name) {
40 <        _label = new JLabel(name + ": ");
39 >    public CPUDataComponent(String name, String attribute) {
40 >        _name = name;
41 >        _attribute = attribute;
42 >        _label = new JLabel(_name + ": ");
43          _label.setHorizontalAlignment(JLabel.RIGHT);
44          setLayout(new GridLayout(1, 2));
45 +        _item.setString("-uninitialised-");
46          add(_label);
47          add(_item);
48      }
49  
50   //---PUBLIC METHODS---
51  
52 +    /**
53 +     * This run method updates any Swing components
54 +     * The setValue() method adds this component
55 +     * to the Swing Event Dispatching Queue to
56 +     * run this method.
57 +     */
58 +    public void run() {
59 +        _item.setString(_cache + "%");
60 +        _item.setValue(new Double(_cache).intValue());
61 +    }
62 +
63 +    /**
64 +     * Overrides the {@link java.lang.Object#toString() Object.toString()}
65 +     * method to provide clean logging (every class should have this).
66 +     *
67 +     * @return the name of this class and its CVS revision
68 +     */
69 +    public String toString() {
70 +        return _name + "(" + _attribute + ")";
71 +    }
72 +
73   //---PRIVATE METHODS---
74  
75   //---ACCESSOR/MUTATOR METHODS---
76  
77      /**
78 <     * This takes the String value of the parammeter that this component
78 >     * This takes the String value of the parameter that this component
79       * is monitoring direct from the packet, it then performs all
80 <     * approriate conversions and displays the data.
80 >     * approriate conversions and adds this class to the Swing Event
81 >     * Dispatching queue.
82       *
83       * @param value the value for this data component
84 +     * @throws DataFormatException if there was a problem converting the data for display
85       */
86      public void setValue(String value) throws DataFormatException {
87          try {
88 <            _item.setString(value + "%");
89 <            _item.setValue(new Double(value).intValue());
88 >            if(!_cache.equals(value)) {
89 >                _cache = value;
90 >                SwingUtilities.invokeLater(this);
91 >            }
92          } catch (Exception e) {
93 <            throw new DataFormatException("invalid data type for component");
93 >            throw new DataFormatException(value + " is an invalid data type for " + toString());
94          }
95      }        
96  
97   //---ATTRIBUTES---
98  
99 +    /**
100 +     * The friendly name of this component
101 +     */
102 +    private String _name;
103 +    
104 +    /**
105 +     * The attribute that this component is concerned with
106 +     */
107 +    private String _attribute;
108 +    
109 +    /**
110 +     * Remebers what the last value was, so we
111 +     * only update if we have to.
112 +     */    
113 +    String _cache = "";
114 +    
115 +    /**
116 +     * The minimum value for the percentage
117 +     */
118      private final int _min = 0;
119 +    
120 +    /**
121 +     * The maximum value for the percentage
122 +     */
123      private final int _max = 100;
124 +    
125 +    /**
126 +     * The friendly label for this component
127 +     */
128      private JLabel _label;
129 +    
130 +    /**
131 +     * The progress bar that we will display CPU
132 +     * percentage data in
133 +     */
134      private JProgressBar _item = new JProgressBar(JProgressBar.HORIZONTAL, _min, _max);
135      {
136          _item.setStringPainted(true);
137      }
138 < }
138 >
139 > //---STATIC ATTRIBUTES---
140 >
141 > }

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