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

Comparing projects/cms/source/conient/uk/org/iscream/cms/conient/datacomponents/StringDataComponent.java (file contents):
Revision 1.2 by ajm, Mon Jan 22 12:32:14 2001 UTC vs.
Revision 1.7 by ajm, Wed Jan 24 03:22:24 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 javax.swing.JTextField;
7		import java.awt.GridLayout;
8
9		/**
10		* This is the most basic of DataComponents.
11		*
12		* It simply displays the value as a String
13	<	* in a JLabel.
13	>	* in a JTextField.
14		*
15		* @author  $Author$
16		* @version $Id$
17		*/
18	<	public class StringDataComponent extends DataComponent {
18	>	public class StringDataComponent extends VisibleDataComponent implements DataComponent {
19
20		//---FINAL ATTRIBUTES---
21
#	Line 21 | Line 23 | public class StringDataComponent extends DataComponent
23		* The current CVS revision of this class
24		*/
25		public final String REVISION = "$Revision$";
26	+
27	+	/**
28	+	* The default length of the JTextField
29	+	*/
30	+	private final int DEFAULT_TEXT_LENGTH = 20;
31
32		//---STATIC METHODS---
33
#	Line 31 | Line 38 | public class StringDataComponent extends DataComponent
38		* used as label
39		*
40		* @param name the friendly name
41	+	* @param attribute the data attribute we look after
42		*/
43	<	public StringDataComponent(String name) {
44	<	_label = new JLabel(name + ": ");
43	>	public StringDataComponent(String name, String attribute) {
44	>	_name = name;
45	>	_attribute = attribute;
46	>	_item = new JTextField("", DEFAULT_TEXT_LENGTH);
47	>	_item.setEditable(false);
48	>	_label = new JLabel(_name + ": ");
49		_label.setHorizontalAlignment(JLabel.RIGHT);
50		setLayout(new GridLayout(1, 2));
51		add(_label);
#	Line 42 | Line 54 | public class StringDataComponent extends DataComponent
54
55		//---PUBLIC METHODS---
56
57	+	/**
58	+	* Overrides the {@link java.lang.Object#toString() Object.toString()}
59	+	* method to provide clean logging (every class should have this).
60	+	*
61	+	* @return the name of this class and its CVS revision
62	+	*/
63	+	public String toString() {
64	+	return _name + "(" + _attribute + ")";
65	+	}
66	+
67		//---PRIVATE METHODS---
68
69		//---ACCESSOR/MUTATOR METHODS---
#	Line 56 | Line 78 | public class StringDataComponent extends DataComponent
78		*/
79		public void setValue(String value) throws DataFormatException {
80		try {
81	<	_item.setText(value);
81	>	if(!_cache.equals(value)) {
82	>	_cache = value;
83	>	_item.setText(value);
84	>	}
85		} catch (Exception e) {
86	<	throw new DataFormatException("invalid data type for component");
86	>	throw new DataFormatException(value + " is an invalid data type for " + toString());
87		}
88		}
89
90		//---ATTRIBUTES---
91
92		/**
93	+	* The friendly name of this component
94	+	*/
95	+	private String _name;
96	+
97	+	/**
98	+	* The attribute that this component is concerned with
99	+	*/
100	+	private String _attribute;
101	+
102	+	/**
103		* The friendly label for this component
104		*/
105		protected JLabel _label;
106
107		/**
108	+	* Remebers what the last value was, so we
109	+	* only update if we have to.
110	+	*/
111	+	String _cache = "";
112	+
113	+	/**
114	+	* The length of the JTextField
115	+	*/
116	+	protected int _displayLength;
117	+
118	+	/**
119		* Just a normal label to display our value as a String
120		*/
121	<	protected JLabel _item = new JLabel();
121	>	protected JTextField _item;
122
123		//---STATIC ATTRIBUTES---
124

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