Java tutorial
// ********************************************************************** // // Copyright (c) 2003-2011 ZeroC, Inc. All rights reserved. // // This copy of Ice is licensed to you under the terms described in the // ICE_LICENSE file included in this distribution. // // ********************************************************************** package IceGridGUI.LiveDeployment; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.BoxLayout; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JDialog; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JTextField; import com.jgoodies.forms.builder.DefaultFormBuilder; import com.jgoodies.forms.factories.Borders; import com.jgoodies.forms.factories.ButtonBarFactory; import com.jgoodies.forms.layout.FormLayout; import com.jgoodies.forms.util.LayoutStyle; import IceGrid.*; import IceGridGUI.*; class ShowLogPrefsDialog extends JDialog { ShowLogPrefsDialog(final ShowLogDialog sld) { super(sld, "Preferences - IceGrid Admin", true); setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE); final JTextField maxLinesField = new JTextField(10); maxLinesField.setText(Integer.toString(sld.getMaxLines())); maxLinesField.setToolTipText("Maximum number of lines in this dialog's buffer"); final JTextField maxSizeField = new JTextField(10); maxSizeField.setText(Integer.toString(sld.getMaxSize())); maxSizeField.setToolTipText("Maximum number of characters in this dialog's buffer"); final JTextField initialLinesField = new JTextField(10); initialLinesField.setText(Integer.toString(sld.getInitialLines())); initialLinesField.setToolTipText("Start by retrieving <num> lines from the server; -1 means retrieve all"); final JTextField maxReadSizeField = new JTextField(10); maxReadSizeField.setText(Integer.toString(sld.getMaxReadSize())); maxReadSizeField.setToolTipText("Maximum number of bytes read by each request"); final JTextField periodField = new JTextField(10); periodField.setText(Float.toString((float) sld.getPeriod() / 1000)); periodField.setToolTipText("After reaching EOF, check every <num> seconds for new output"); JButton okButton = new JButton("OK"); ActionListener okListener = new ActionListener() { public void actionPerformed(ActionEvent e) { try { int maxLines = parseInt(maxLinesField, "Max lines in buffer"); int maxSize = parseInt(maxSizeField, "Max characters in buffer"); int initialLines = parseInt(initialLinesField, "Initial tail (lines)"); int maxReadSize = parseInt(maxReadSizeField, "Max bytes read per request"); int period = (int) (parseFloat(periodField, "Poll period (seconds)") * 1000); sld.setPrefs(maxLines, maxSize, initialLines, maxReadSize, period); dispose(); } catch (NumberFormatException ex) { return; } } }; okButton.addActionListener(okListener); getRootPane().setDefaultButton(okButton); JButton cancelButton = new JButton("Cancel"); ActionListener cancelListener = new ActionListener() { public void actionPerformed(ActionEvent e) { dispose(); } }; cancelButton.addActionListener(cancelListener); FormLayout layout = new FormLayout("left:pref, 3dlu, fill:pref:grow", ""); DefaultFormBuilder builder = new DefaultFormBuilder(layout); builder.setDefaultDialogBorder(); builder.setRowGroupingEnabled(true); builder.setLineGapSize(LayoutStyle.getCurrent().getLinePad()); builder.append("Max lines in buffer", maxLinesField); builder.nextLine(); builder.append("Max characters in buffer", maxSizeField); builder.nextLine(); builder.append("Initial tail (lines)", initialLinesField); builder.nextLine(); builder.append("Max bytes read per request", maxReadSizeField); builder.nextLine(); builder.append("Poll period (seconds)", periodField); builder.nextLine(); JComponent buttonBar = ButtonBarFactory.buildOKCancelBar(okButton, cancelButton); buttonBar.setBorder(Borders.DIALOG_BORDER); java.awt.Container contentPane = getContentPane(); contentPane.setLayout(new BoxLayout(contentPane, BoxLayout.Y_AXIS)); contentPane.add(builder.getPanel()); contentPane.add(buttonBar); pack(); setResizable(false); setLocationRelativeTo(sld); setVisible(true); } private int parseInt(JTextField field, String label) throws NumberFormatException { try { return Integer.parseInt(field.getText()); } catch (NumberFormatException e) { JOptionPane.showMessageDialog(this, label + " must be an integer", "Invalid entry", JOptionPane.ERROR_MESSAGE); throw e; } } private float parseFloat(JTextField field, String label) throws NumberFormatException { try { return Float.parseFloat(field.getText()); } catch (NumberFormatException e) { JOptionPane.showMessageDialog(this, label + " must be a decimal number", "Invalid entry", JOptionPane.ERROR_MESSAGE); throw e; } } }