skrueger/swing/TranslationJTextField.java

package skrueger.swing;

import java.awt.Color;

import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;

import org.apache.log4j.Logger;

import skrueger.i8n.Translation;

/**
 * A {@link JTextArea} that signals red when it is not filled by a value.
 * 
 * @author Stefan Alfons Krüger
 * 
 */
public class TranslationJTextField extends JTextField {
        static final Logger log = Logger.getLogger(TranslationJTextField.class);
    int wasValid = 99; // 0 = false, 1 = true, 99 = undefined 
        private String langCode;
        private Translation trans;
        
        /**
         * This RED indicates a missing translation 
         * 
         * TODO to properties ;-)
         */
        final static public Color emptyColor = new Color(240,190,190);

        /**
         * Creates a new {@link TranslationJTextField}
         * @param trans 
         * @param langCode
         */
        public TranslationJTextField(Translation trans, String langCode) {
                super(trans.get(langCode));
                this.trans = trans;
                this.langCode = langCode;
                
                /** SK: Change  26.Mai 
                 * Use the default for an empty field **/
                if (trans.get(langCode) == null) {
                        String defaultTrans = trans.get( Translation.DEFAULT_KEY);
                        trans.put(langCode, defaultTrans);
                        setText( defaultTrans );
                }
                
                checkValid();

                // This Listener colors the JTextfiel red if it is empty
                getDocument().addDocumentListener(new DocumentListener() {

                        // This method is called after an insert into the document
                        public void insertUpdate(DocumentEvent evt) {
                                checkValid();
                        }

                        // This method is called after a removal from the document
                        public void removeUpdate(DocumentEvent evt) {
                                checkValid();
                        }

                        // This method is called after one or more attributes have changed.
                        // This method is not called when characters are inserted with
                        // attributes.
                        public void changedUpdate(DocumentEvent evt) {
                                checkValid();
                        }
                });
        }

        /**
         * If the getText == "". then set Background color red.
         * This change is only done if the state really changed.
         * And directly store the change in the {@link Translation} object
         */
        protected void checkValid() {
                
                String trimmedText = getText().trim();
                
                if (trimmedText.equals("")) {
                        // Not valid
                        if (wasValid != 0) {            
                                setBackground( emptyColor );
                                repaint();
                                wasValid = 0;
                        }
                        
                        // TODO testen! hat sich das bewährt?
                        // Directly store the change in the Translation Object
                        // trans.remove( langCode );
                        trans.put( langCode, trimmedText );
                        
                } else {
                        // valid
                        if (wasValid != 1) {
                                setBackground(Color.white);
                                repaint();
                                wasValid = 1;
                        }
                        // Directly store the change in the Translation Object
                        trans.put( langCode, trimmedText );
                }
                
        }

}
1	mojays	2	package skrueger.swing;
2
3			import java.awt.Color;
4
5			import javax.swing.JTextArea;
6			import javax.swing.JTextField;
7			import javax.swing.event.DocumentEvent;
8			import javax.swing.event.DocumentListener;
9
10			import org.apache.log4j.Logger;
11
12			import skrueger.i8n.Translation;
13
14			/**
15			* A {@link JTextArea} that signals red when it is not filled by a value.
16			*
17			* @author Stefan Alfons Krüger
18			*
19			*/
20			public class TranslationJTextField extends JTextField {
21			static final Logger log = Logger.getLogger(TranslationJTextField.class);
22			int wasValid = 99; // 0 = false, 1 = true, 99 = undefined
23			private String langCode;
24			private Translation trans;
25
26			/**
27			* This RED indicates a missing translation
28			*
29			* TODO to properties ;-)
30			*/
31			final static public Color emptyColor = new Color(240,190,190);
32
33			/**
34			* Creates a new {@link TranslationJTextField}
35			* @param trans
36			* @param langCode
37			*/
38			public TranslationJTextField(Translation trans, String langCode) {
39			super(trans.get(langCode));
40			this.trans = trans;
41			this.langCode = langCode;
42
43			/** SK: Change 26.Mai
44			* Use the default for an empty field **/
45			if (trans.get(langCode) == null) {
46			String defaultTrans = trans.get( Translation.DEFAULT_KEY);
47			trans.put(langCode, defaultTrans);
48			setText( defaultTrans );
49			}
50
51			checkValid();
52
53			// This Listener colors the JTextfiel red if it is empty
54			getDocument().addDocumentListener(new DocumentListener() {
55
56			// This method is called after an insert into the document
57			public void insertUpdate(DocumentEvent evt) {
58			checkValid();
59			}
60
61			// This method is called after a removal from the document
62			public void removeUpdate(DocumentEvent evt) {
63			checkValid();
64			}
65
66			// This method is called after one or more attributes have changed.
67			// This method is not called when characters are inserted with
68			// attributes.
69			public void changedUpdate(DocumentEvent evt) {
70			checkValid();
71			}
72			});
73			}
74
75			/**
76			* If the getText == "". then set Background color red.
77			* This change is only done if the state really changed.
78			* And directly store the change in the {@link Translation} object
79			*/
80			protected void checkValid() {
81
82			String trimmedText = getText().trim();
83
84			if (trimmedText.equals("")) {
85			// Not valid
86			if (wasValid != 0) {
87			setBackground( emptyColor );
88			repaint();
89			wasValid = 0;
90			}
91
92			// TODO testen! hat sich das bewährt?
93			// Directly store the change in the Translation Object
94			// trans.remove( langCode );
95			trans.put( langCode, trimmedText );
96
97			} else {
98			// valid
99			if (wasValid != 1) {
100			setBackground(Color.white);
101			repaint();
102			wasValid = 1;
103			}
104			// Directly store the change in the Translation Object
105			trans.put( langCode, trimmedText );
106			}
107
108			}
109
110			}