ViewVC Help

View File | Revision Log | Show Annotations | Revision Graph | Root Listing

root/i-scream/projects/cms/source/conient/uk/org/iscream/cms/conient/datacomponents/UsersDataComponent.java

Comparing projects/cms/source/conient/uk/org/iscream/cms/conient/datacomponents/UsersDataComponent.java (file contents):
Revision 1.1 by tdb, Mon Jan 22 19:35:36 2001 UTC vs.
Revision 1.10 by ajm, Sun Feb 4 00:06:14 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 java.util.Date;
8	+	import java.util.StringTokenizer;
9	+	import javax.swing.JComboBox;
10		import java.text.DateFormat;
11	+	import javax.swing.SwingUtilities;
12
13		/**
14	<	* This is DataComponent specifically for converting
15	<	* time since epoc dates into a nice format.
14	>	* This component displays the users currently logged
15	>	* onto a system.  Currently it does this simply by
16	>	* putting them all in a JCombobox.
17		*
13	–	* As this is essentially just string data we just
14	–	* extend StringDataComponent, intercepting the value
15	–	* to convert it.
16	–	*
17	–	* It uses the JProgressBar to display the value.
18	–	*
18		* @author  $Author$
19		* @version $Id$
20		*/
21	<	public class UsersDataComponent extends StringDataComponent {
21	>	public class UsersDataComponent extends VisibleDataComponent {
22
23		//---FINAL ATTRIBUTES---
24
#	Line 34 | Line 33 | public class UsersDataComponent extends StringDataComp
33		* that.
34		*
35		* @param name the friendly name
36	+	* @param attribute the data attribute we look after
37		*/
38	<	public UsersDataComponent(String name) {
39	<	super(name);
38	>	public UsersDataComponent(String name, String attribute) {
39	>	_name = name;
40	>	_attribute = attribute;
41	>	_label = new JLabel(name + ": ");
42	>	_label.setHorizontalAlignment(JLabel.RIGHT);
43	>	setLayout(new GridLayout(1, 2));
44	>	_item.addItem("-uninitialised-");
45	>	add(_label);
46	>	add(_item);
47		}
48
49		//---PUBLIC METHODS---
50	+
51	+	/**
52	+	* This run method updates any Swing components
53	+	* The setValue() method adds this component
54	+	* to the Swing Event Dispatching Queue to
55	+	* run this method.
56	+	*/
57	+	public void run() {
58	+	_item.removeAllItems();
59	+	if (_cache.equals(" ")) {
60	+	_item.addItem("no users logged on");
61	+	} else {
62	+	StringTokenizer st = new StringTokenizer(_cache);
63	+	while(st.hasMoreTokens()) {
64	+	_item.addItem(st.nextToken());
65	+	}
66	+	}
67	+	}
68
69	+	/**
70	+	* Overrides the {@link java.lang.Object#toString() Object.toString()}
71	+	* method to provide clean logging (every class should have this).
72	+	*
73	+	* @return the name of this class and its CVS revision
74	+	*/
75	+	public String toString() {
76	+	return _name + "(" + _attribute + ")";
77	+	}
78	+
79		//---PRIVATE METHODS---
80
81		//---ACCESSOR/MUTATOR METHODS---
#	Line 48 | Line 83 | public class UsersDataComponent extends StringDataComp
83		/**
84		* This takes the String value of the parameter that this component
85		* is monitoring direct from the packet, it then performs all
86	<	* approriate conversions and displays the data.
86	>	* approriate conversions and adds this class to the Swing Event
87	>	* Dispatching queue.
88		*
53	–	* In this case all we do is change string and pass it to our
54	–	* super class for displaying.
55	–	*
89		* @param value the value for this data component
90		* @throws DataFormatException if there was a problem converting the data for display
91		*/
92		public void setValue(String value) throws DataFormatException {
93		try {
94	<	if (value.length() > 20) {
95	<	value = value.substring(0, 20);
94	>	if (!_cache.equals(value)) {
95	>	_cache = value;
96	>	SwingUtilities.invokeLater(this);
97		}
64	–	super.setValue(value);
98		} catch (Exception e) {
99	<	throw new DataFormatException("invalid data type for component");
99	>	throw new DataFormatException(value + " is an invalid data type for " + toString());
100		}
101	<	}
101	>	}
102	>
103	>	/**
104	>	* Returns the string showing the packet
105	>	* attribute that the component is looking after
106	>	*
107	>	* @return the packet reference
108	>	*/
109	>	public String getPacketAttribute() {
110	>	return _attribute;
111	>	}
112
113		//---ATTRIBUTES---
114	+
115	+	/**
116	+	* The friendly name of this component
117	+	*/
118	+	private String _name;
119	+
120	+	/**
121	+	* The attribute that this component is concerned with
122	+	*/
123	+	private String _attribute;
124	+
125	+	/**
126	+	* Remebers what the last value was, so we
127	+	* only update if we have to.
128	+	*/
129	+	String _cache = "";
130	+
131	+	/**
132	+	* The friendly label for this component
133	+	*/
134	+	protected JLabel _label;
135	+
136	+	/**
137	+	* Just a JComboBox to display the users in
138	+	*/
139	+	protected JComboBox _item = new JComboBox();
140
141		//---STATIC ATTRIBUTES---
142
143	<	}
143	>	}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines