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25 package org.jrobin.inspector;
26
27 import org.jrobin.core.DsDef;
28 import org.jrobin.core.RrdException;
29
30 import javax.swing.*;
31 import java.awt.*;
32 import java.awt.event.WindowEvent  ;
33 import java.awt.event.ActionListener ;
34 import java.awt.event.ActionEvent ;
35
36 class EditDatasourceDialog extends JDialog {
37 private static final int FIELD_SIZE = 20;
38 private static final String TITLE_NEW = "New datasource";
39 private static final String TITLE_EDIT = "Edit datasource";
40
41 private JLabel nameLabel = new JLabel("Datasource name: ");
42 private JLabel typeLabel = new JLabel("Datasource type: ");
43 private JLabel heartbeatLabel = new JLabel("Heartbeat: ");
44 private JLabel minLabel = new JLabel("Min value: ");
45 private JLabel maxLabel = new JLabel("Max value: ");
46
47 private JTextField nameField = new JTextField(FIELD_SIZE);
48 private JComboBox typeCombo = new JComboBox();
49 private JTextField heartbeatField = new JTextField(FIELD_SIZE);
50 private JTextField minField = new JTextField(FIELD_SIZE);
51 private JTextField maxField = new JTextField(FIELD_SIZE);
52
53 private JButton okButton = new JButton("OK");
54 private JButton cancelButton = new JButton("Cancel");
55
56 private DsDef dsDef;
57
58 EditDatasourceDialog(Frame parent, DsDef dsDef) {
59 super(parent, dsDef == null? TITLE_NEW: TITLE_EDIT, true);
60 constructUI(dsDef);
61 pack();
62 Util.centerOnScreen(this);
63 setVisible(true);
64 }
65
66 private void constructUI(DsDef dsDef) {
67 String [] types = DsDef.DS_TYPES;
69 for (int i = 0; i < types.length; i++) {
70 typeCombo.addItem(types[i]);
71 }
72 typeCombo.setSelectedIndex(0);
73 if(dsDef == null) {
74 minField.setText("U");
76 maxField.setText("U");
77 }
78 else {
79 nameField.setText(dsDef.getDsName());
81 nameField.setEnabled(false);
82 typeCombo.setSelectedItem(dsDef.getDsType());
83 typeCombo.setEnabled(false);
84 heartbeatField.setText("" + dsDef.getHeartbeat());
85 minField.setText("" + dsDef.getMinValue());
86 maxField.setText("" + dsDef.getMaxValue());
87 }
88
89 JPanel content = (JPanel) getContentPane();
91 GridBagLayout layout = new GridBagLayout();
92 content.setLayout(layout);
93 GridBagConstraints gbc = new GridBagConstraints();
94 gbc.insets = new Insets(3, 3, 3, 3);
95 gbc.gridx = 0; gbc.gridy = 0; gbc.anchor = GridBagConstraints.EAST;
96 layout.setConstraints(nameLabel, gbc);
97 content.add(nameLabel);
98 gbc.gridy = 1;
99 layout.setConstraints(typeLabel, gbc);
100 content.add(typeLabel);
101 gbc.gridy = 2;
102 layout.setConstraints(heartbeatLabel, gbc);
103 content.add(heartbeatLabel);
104 gbc.gridy = 3;
105 layout.setConstraints(minLabel, gbc);
106 content.add(minLabel);
107 gbc.gridy = 4;
108 layout.setConstraints(maxLabel, gbc);
109 content.add(maxLabel);
110 gbc.gridy = 5;
111 layout.setConstraints(okButton, gbc);
112 okButton.setPreferredSize(cancelButton.getPreferredSize());
113 content.add(okButton);
114 gbc.gridx = 1; gbc.gridy = 0; gbc.anchor = GridBagConstraints.WEST;
115 layout.setConstraints(nameField, gbc);
116 content.add(nameField);
117 gbc.gridy = 1;
118 layout.setConstraints(typeCombo, gbc);
119 content.add(typeCombo);
120 gbc.gridy = 2;
121 layout.setConstraints(heartbeatField, gbc);
122 content.add(heartbeatField);
123 gbc.gridy = 3;
124 layout.setConstraints(minField, gbc);
125 content.add(minField);
126 gbc.gridy = 4;
127 layout.setConstraints(maxField, gbc);
128 content.add(maxField);
129 gbc.gridy = 5;
130 layout.setConstraints(cancelButton, gbc);
131 content.add(cancelButton);
132 getRootPane().setDefaultButton(okButton);
133
134 okButton.addActionListener(new ActionListener () {
136 public void actionPerformed(ActionEvent e) { ok(); }
137 });
138 cancelButton.addActionListener(new ActionListener () {
139 public void actionPerformed(ActionEvent e) { cancel(); }
140 });
141
142 setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
143 }
144
145 private void ok() {
146 dsDef = createDsDef();
147 if(dsDef != null) {
148 close();
149 }
150 }
151
152 private void close() {
153 dispatchEvent(new WindowEvent (this, WindowEvent.WINDOW_CLOSING));
154 }
155
156 private void cancel() {
157 close();
158 }
159
160 private DsDef createDsDef() {
161 String name = nameField.getText();
162 if(name == null || name.length() < 1 || name.length() > 20) {
163 Util.error(this, "Datasource name must be a non-empty string up to 20 chars long");
164 return null;
165 }
166 String type = (String ) typeCombo.getSelectedItem();
167 long heartbeat;
168 try {
169 heartbeat = Long.parseLong(heartbeatField.getText());
170 if(heartbeat <= 0) {
171 throw new NumberFormatException ();
172 }
173 }
174 catch(NumberFormatException nfe) {
175 Util.error(this, "Heartbeat must be a positive integer number");
176 return null;
177 }
178 double min = Double.NaN, max = Double.NaN;
179 try {
180 min = Double.parseDouble(minField.getText());
181 }
182 catch (NumberFormatException nfe) {
183 }
185 try {
186 max = Double.parseDouble(maxField.getText());
187 }
188 catch (NumberFormatException nfe) {
189 }
191 if(!Double.isNaN(min) && !Double.isNaN(max) && min >= max) {
192 Util.error(this, "Min value must be less than max value");
193 return null;
194 }
195 try {
196 return new DsDef(name, type, heartbeat, min, max);
197 }
198 catch(RrdException e) {
199 e.printStackTrace();
201 return null;
202 }
203 }
204
205 DsDef getDsDef() {
206 return dsDef;
207 }
208 }
209 |
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