|
1 package org.objectstyle.cayenne.swing;
56
57 import java.awt.Color  ;
58 import java.awt.Component ;
59 import java.awt.event.ActionEvent ;
60 import java.awt.event.ActionListener ;
61
62 import javax.swing.InputVerifier ;
63 import javax.swing.JComponent ;
64 import javax.swing.JTextArea ;
65 import javax.swing.JTextField ;
66 import javax.swing.event.DocumentEvent ;
67 import javax.swing.event.DocumentListener ;
68 import javax.swing.text.JTextComponent ;
69
70 import org.objectstyle.cayenne.modeler.dialog.validator.ValidatorDialog;
71 import org.objectstyle.cayenne.validation.ValidationException;
72
73
78 public class TextBinding extends BindingBase {
79
80 protected JTextComponent textComponent;
81
82 protected Color defaultBGColor;
83 protected Color errorColor;
84 protected String defaultToolTip;
85
86 public TextBinding(JTextField textField, String expression) {
87 super(expression);
88 this.textComponent = textField;
89 initComponentDefaults();
90
91 textField.addActionListener(new ActionListener () {
92
93 public void actionPerformed(ActionEvent e) {
94 updateModel();
95 }
96 });
97
98 textComponent.setInputVerifier(new InputVerifier () {
99
100 public boolean verify(JComponent c) {
101 updateModel();
102 return true;
104 }
105 });
106
107 }
108
109 public TextBinding(JTextArea textArea, String property) {
110 super(property);
111 this.textComponent = textArea;
112 initComponentDefaults();
113
114 textComponent.getDocument().addDocumentListener(new DocumentListener () {
115
116 public void insertUpdate(DocumentEvent e) {
117 verifyTextChange(e);
118 }
119
120 public void changedUpdate(DocumentEvent e) {
121 verifyTextChange(e);
122 }
123
124 public void removeUpdate(DocumentEvent e) {
125 verifyTextChange(e);
126 }
127
128 void verifyTextChange(DocumentEvent e) {
129 if (!modelUpdateDisabled) {
130 updateModel();
131 }
132 }
133 });
134 }
135
136 protected void initComponentDefaults() {
137 this.errorColor = ValidatorDialog.WARNING_COLOR;
138 this.defaultBGColor = textComponent.getBackground();
139 this.defaultToolTip = textComponent.getToolTipText();
140 }
141
142 public void updateView() {
143 Object value = getValue();
144 String text = (value != null) ? value.toString() : null;
145
146 modelUpdateDisabled = true;
147 try {
148 clear();
149 textComponent.setText(text);
150 }
151 finally {
152 modelUpdateDisabled = false;
153 }
154 }
155
156
159 public Component getView() {
160 return textComponent;
161 }
162
163 protected void updateModel() {
164 try {
165 setValue(textComponent.getText());
166 clear();
167 }
168 catch (ValidationException vex) {
169 textComponent.setBackground(errorColor);
170 textComponent.setToolTipText(vex.getUnlabeledMessage());
171 }
172 }
173
174 protected void clear() {
175 textComponent.setBackground(defaultBGColor);
176 textComponent.setToolTipText(defaultToolTip);
177 }
178 } |
Popular Tags |
Java API By Example, From Geeks To Geeks.