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//---PACKAGE DECLARATION--- |
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package uk.org.iscream.conient.datacomponents; |
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//---IMPORTS--- |
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import javax.swing.JLabel; |
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import java.awt.GridLayout; |
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import javax.swing.JProgressBar; |
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import javax.swing.SwingUtilities; |
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import uk.org.iscream.util.XMLPacket; |
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/** |
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* This is DataComponent specifically for |
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* @author $Author$ |
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* @version $Id$ |
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*/ |
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public class CPUDataComponent extends DataComponent { |
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public class CPUDataComponent extends VisibleDataComponent { |
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//---FINAL ATTRIBUTES--- |
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* used as label |
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* |
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* @param name the friendly name |
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* @param attribute the data attribute we look after |
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*/ |
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public CPUDataComponent(String name) { |
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_label = new JLabel(name + ": "); |
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public CPUDataComponent(String name, String attribute) { |
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_name = name; |
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_attribute = attribute; |
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_label = new JLabel(_name + ": "); |
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_label.setHorizontalAlignment(JLabel.RIGHT); |
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setLayout(new GridLayout(1, 2)); |
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_item.setString("-uninitialised-"); |
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add(_label); |
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add(_item); |
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setVisible(false); |
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} |
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//---PUBLIC METHODS--- |
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/** |
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* This run method updates any Swing components |
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* The setValue() method adds this component |
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* to the Swing Event Dispatching Queue to |
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* run this method. |
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*/ |
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public void run() { |
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if(!isVisible()) { |
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setVisible(true); |
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} |
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_item.setString(_cache + "%"); |
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_item.setValue(new Double(_cache).intValue()); |
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} |
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/** |
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* Overrides the {@link java.lang.Object#toString() Object.toString()} |
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* method to provide clean logging (every class should have this). |
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* |
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* @return the name of this class and its CVS revision |
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*/ |
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public String toString() { |
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return _name + "(" + _attribute + ")"; |
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} |
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//---PRIVATE METHODS--- |
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//---ACCESSOR/MUTATOR METHODS--- |
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/** |
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* This takes the String value of the parammeter that this component |
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* is monitoring direct from the packet, it then performs all |
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* approriate conversions and displays the data. |
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* This takes the packet to obtain the value from, it then performs all |
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* approriate conversions and adds this class to the Swing Event |
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* Dispatching queue. |
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* |
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* @param value the value for this data component |
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* @param packet the XMLPacket to get the data from |
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* @throws DataFormatException if there was a problem converting the data for display |
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*/ |
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public void setValue(String value) throws DataFormatException { |
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public void setValue(XMLPacket packet) throws DataFormatException { |
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String value = packet.getParam(_attribute); |
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try { |
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_item.setString(value + "%"); |
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_item.setValue(new Double(value).intValue()); |
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if(!_cache.equals(value)) { |
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_cache = value; |
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SwingUtilities.invokeLater(this); |
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} |
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} catch (Exception e) { |
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throw new DataFormatException("invalid data type for component"); |
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throw new DataFormatException(value + " is an invalid data type for " + toString()); |
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} |
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} |
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} |
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/** |
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* Returns the string showing the packet |
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* attribute that the component is looking after |
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* |
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* @return the packet reference |
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*/ |
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public String getPacketAttribute() { |
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return _attribute; |
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} |
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//---ATTRIBUTES--- |
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/** |
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* The friendly name of this component |
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*/ |
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private String _name; |
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/** |
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* The attribute that this component is concerned with |
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*/ |
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private String _attribute; |
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/** |
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* Remembers what the last value was, so we |
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* only update if we have to. |
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*/ |
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protected String _cache = ""; |
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/** |
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* The minimum value for the percentage |
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*/ |
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private final int _min = 0; |
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/** |
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* The maximum value for the percentage |
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*/ |
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private final int _max = 100; |
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/** |
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* The friendly label for this component |
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*/ |
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private JLabel _label; |
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/** |
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* The progress bar that we will display CPU |
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* percentage data in |
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*/ |
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private JProgressBar _item = new JProgressBar(JProgressBar.HORIZONTAL, _min, _max); |
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{ |
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_item.setStringPainted(true); |
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} |
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} |
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//---STATIC ATTRIBUTES--- |
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} |
