conient/datacomponents/DateDataComponent.java

//---PACKAGE DECLARATION---
package uk.org.iscream.cms.conient.datacomponents;

//---IMPORTS---
import javax.swing.JLabel;
import java.awt.GridLayout;
import java.util.Date;
import java.text.DateFormat;
import javax.swing.SwingUtilities;
import uk.org.iscream.cms.server.util.XMLPacket;

/**
 * This is DataComponent specifically for converting
 * time since epoc dates into a nice format.
 *
 * As this is essentially just string data we just
 * extend StringDataComponent, intercepting the value
 * to convert it.
 *
 * @author  $Author: ajm4 $
 * @version $Id: DateDataComponent.java,v 1.9 2001/03/18 14:43:39 ajm4 Exp $
 */
public class DateDataComponent extends StringDataComponent {

//---FINAL ATTRIBUTES---

//---STATIC METHODS---

//---CONSTRUCTORS---

    /**
     * Creates the component with a friendly name to be 
     * used as label, but as we're a very basic
     * extension of StringDataComponent, we just construct
     * that.
     *
     * @param name the friendly name
     * @param attribute the data attribute we look after
     */
    public DateDataComponent(String name, String attribute) {
        super(name, attribute);
    }

//---PUBLIC METHODS---

//---PRIVATE METHODS---

//---ACCESSOR/MUTATOR METHODS---
     
    /**
     * This takes the packet to obtain the value from, it then performs all
     * approriate conversions and adds this class to the Swing Event
     * Dispatching queue.
     *
     * In this case all we do is change string and pass it to our
     * super class for displaying.  Note that we need to *1000
     * as the data standard is for time in seconds, but java likes
     * milliseconds.
     *
     * @param packet the XMLPacket to get the data from
     * @throws DataFormatException if there was a problem converting the data for display
     */
    public void setValue(XMLPacket packet) throws DataFormatException {
        String value = packet.getParam(_attribute);
        try {
            if(!_ourCache.equals(value)) {
                _ourCache = value;
                _cache = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.MEDIUM).format(new Date(Long.parseLong(value) * 1000));
                SwingUtilities.invokeLater(this);
            }
        } catch (Exception e) {
            throw new DataFormatException(value + " is an invalid data type for " + toString());
        }
    }        

//---ATTRIBUTES---

    /**
     * Remembers what the last value was, so we
     * only update if we have to.
     */    
    String _ourCache = "";

//---STATIC ATTRIBUTES---

}
Revision:	1.10
Committed:	Tue May 29 17:41:32 2001 UTC (22 years, 11 months ago) by tdb
Branch:	MAIN
Changes since 1.9:	+3 -3 lines
Log Message:	The last of the central monitoring system packages to be changed to the newer structure. It has changed from; uk.org.iscream.conient.* to; uk.org.iscream.cms.conient.* This is in keeping with the new style of packaging.
#	User	Rev	Content
1	ajm	1.2	//---PACKAGE DECLARATION---
2	tdb	1.10	package uk.org.iscream.cms.conient.datacomponents;
3	ajm	1.2
4			//---IMPORTS---
5	ajm	1.1	import javax.swing.JLabel;
6			import java.awt.GridLayout;
7			import java.util.Date;
8			import java.text.DateFormat;
9	ajm	1.9	import javax.swing.SwingUtilities;
10	tdb	1.10	import uk.org.iscream.cms.server.util.XMLPacket;
11	ajm	1.1
12	ajm	1.2	/**
13			* This is DataComponent specifically for converting
14			* time since epoc dates into a nice format.
15			*
16			* As this is essentially just string data we just
17			* extend StringDataComponent, intercepting the value
18			* to convert it.
19			*
20	ajm	1.7	* @author $Author: ajm4 $
21	tdb	1.10	* @version $Id: DateDataComponent.java,v 1.9 2001/03/18 14:43:39 ajm4 Exp $
22	ajm	1.2	*/
23	ajm	1.1	public class DateDataComponent extends StringDataComponent {
24	ajm	1.2
25			//---FINAL ATTRIBUTES---
26
27			//---STATIC METHODS---
28
29			//---CONSTRUCTORS---
30
31			/**
32			* Creates the component with a friendly name to be
33			* used as label, but as we're a very basic
34			* extension of StringDataComponent, we just construct
35			* that.
36			*
37			* @param name the friendly name
38	ajm	1.3	* @param attribute the data attribute we look after
39	ajm	1.2	*/
40	ajm	1.3	public DateDataComponent(String name, String attribute) {
41			super(name, attribute);
42	ajm	1.1	}
43	ajm	1.2
44			//---PUBLIC METHODS---
45
46			//---PRIVATE METHODS---
47
48			//---ACCESSOR/MUTATOR METHODS---
49
50			/**
51	ajm	1.9	* This takes the packet to obtain the value from, it then performs all
52			* approriate conversions and adds this class to the Swing Event
53			* Dispatching queue.
54	ajm	1.2	*
55			* In this case all we do is change string and pass it to our
56	ajm	1.5	* super class for displaying. Note that we need to *1000
57			* as the data standard is for time in seconds, but java likes
58			* milliseconds.
59	ajm	1.2	*
60	ajm	1.9	* @param packet the XMLPacket to get the data from
61	ajm	1.2	* @throws DataFormatException if there was a problem converting the data for display
62			*/
63	ajm	1.9	public void setValue(XMLPacket packet) throws DataFormatException {
64			String value = packet.getParam(_attribute);
65	ajm	1.1	try {
66	ajm	1.9	if(!_ourCache.equals(value)) {
67			_ourCache = value;
68			_cache = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.MEDIUM).format(new Date(Long.parseLong(value) * 1000));
69			SwingUtilities.invokeLater(this);
70	ajm	1.3	}
71	ajm	1.1	} catch (Exception e) {
72	ajm	1.3	throw new DataFormatException(value + " is an invalid data type for " + toString());
73	ajm	1.1	}
74			}
75	ajm	1.2
76			//---ATTRIBUTES---
77	ajm	1.3
78			/**
79	ajm	1.9	* Remembers what the last value was, so we
80	ajm	1.3	* only update if we have to.
81			*/
82	ajm	1.9	String _ourCache = "";
83	ajm	1.2
84			//---STATIC ATTRIBUTES---
85
86	ajm	1.5	}