package uk.co.wingpath.modsnmp; import java.io.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; import uk.co.wingpath.event.*; import uk.co.wingpath.event.Event; import uk.co.wingpath.util.*; import uk.co.wingpath.gui.*; import uk.co.wingpath.modbusgui.*; import uk.co.wingpath.modbus.*; public class ModbusServerPanel implements TreeCard { private final ModbusServerSettings settings; private final ValueEventSource statusListeners; private final WComponent enabledField; private final WComponent hostField; private final WComponent portField; private final WComponent eomTimeoutField; private WComponent idleTimeoutField; private final JButton applyButton; private final JButton resetButton; private final JPanel outerPanel; private final ModSnmpFrontend frontend; private final StatusBar statusBar; public ModbusServerPanel (final ModSnmpFrontend frontend, final ModbusServerSettings settings) { this.frontend = frontend; this.settings = settings; statusListeners = new ValueEventSource (); statusBar = new StatusBar ("snmp-interface", frontend.getHelpViewer ()); statusBar.addStatusListener ( new ValueListener () { public void valueChanged (ValueEvent e) { fireStatusChanged (); } }); outerPanel = new JPanel (); outerPanel.setLayout (new BorderLayout ()); JLabel heading = Gui.createDialogHeading ("Modbus Server"); outerPanel.add (heading, BorderLayout.NORTH); outerPanel.add (statusBar, BorderLayout.SOUTH); JPanel mainPanel = new JPanel (); outerPanel.add (mainPanel, BorderLayout.CENTER); mainPanel.setLayout (new BorderLayout ()); ButtonPanel buttonPanel = new ButtonPanel (); mainPanel.add (buttonPanel, BorderLayout.SOUTH); GridBagPanel panel = new GridBagPanel (); mainPanel.add (panel, BorderLayout.CENTER); ValueListener guiListener = new ValueListener () { public void valueChanged (ValueEvent e) { statusBar.clear (); setButtonsEnabled (); } }; enabledField = new WCheckBox ("Enabled", true); enabledField.setToolTipText ("Whether to start the Modbus server"); enabledField.setMnemonic (KeyEvent.VK_E); panel.addComponent (enabledField); enabledField.addValueListener (guiListener); hostField = new WTextField (statusBar, "Host"); hostField.setToolTipText ( "Host name or IP address on which to accept connections
" + "Leave empty for any address"); hostField.setMnemonic (KeyEvent.VK_O); hostField.setWidthChars (25); panel.addComponent (hostField); hostField.addValueListener (guiListener); portField = new WIntegerField (statusBar, "Port", ModbusServerSettings.MIN_PORT, ModbusServerSettings.MAX_PORT, 502); portField.setToolTipText ("Port on which to listen for connections"); portField.setMnemonic (KeyEvent.VK_P); portField.setWidthChars (10); panel.addComponent (portField); portField.addValueListener (guiListener); eomTimeoutField = new WIntegerField (statusBar, "EOM Timeout", ModbusServerSettings.MIN_EOM_TIMEOUT, ModbusServerSettings.MAX_EOM_TIMEOUT, ModbusServerSettings.MIN_EOM_TIMEOUT); eomTimeoutField.setToolTipText ( "Timeout for end-of-message (in milliseconds)"); eomTimeoutField.setMnemonic (KeyEvent.VK_E); eomTimeoutField.setWidthChars (10); panel.addComponent (eomTimeoutField); eomTimeoutField.addValueListener (guiListener); idleTimeoutField = new WIntegerField (statusBar, "Idle timeout", 0, ModbusServerSettings.MAX_IDLE_TIMEOUT, 0); idleTimeoutField.setToolTipText ( "Period in seconds after which a connection will be " + "closed if idle.
" + "A value of 0 will disable the timeout."); idleTimeoutField.setMnemonic (KeyEvent.VK_I); idleTimeoutField.setWidthChars (10); panel.addComponent (idleTimeoutField); idleTimeoutField.addValueListener (guiListener); applyButton = buttonPanel.addButton ("Apply", null, new ApplyButtonListener ()); resetButton = buttonPanel.addButton ("Reset", null, new ActionListener () { public void actionPerformed (ActionEvent e) { reset (); } }); resetButton.setMnemonic (KeyEvent.VK_R); buttonPanel.addButton (getHelpAction ()); frontend.addBackendStateListener (new BackendState.Listener () { public void stateChanged (BackendState state) { setEnabled (); setButtonsEnabled (); } }); settings.addValueListener ( new ValueListener () { public void valueChanged (ValueEvent e) { getValuesFromModel (); } }); getValuesFromModel (); } public JPanel getPanel () { return outerPanel; } public String getTag () { return "modbus_server"; } public String getName () { return "Modbus Server"; } public Action getHelpAction () { return frontend.getHelpAction ("mbserver"); } public JButton getDefaultButton () { return applyButton; } public String getToolTipText () { return null; } @Override public void selected () { setButtonsEnabled (); } @Override public void reset () { getValuesFromModel (); } private void setEnabled () { boolean en = frontend.isStopped (); enabledField.setEnabled (en); hostField.setEnabled (en); portField.setEnabled (en); eomTimeoutField.setEnabled (en); idleTimeoutField.setEnabled (en); } public boolean isEnabled () { return frontend.isStopped (); } public boolean hasUnappliedChanges () { boolean changed = false; if (enabledField.hasValueChanged (settings.isEnabled ())) changed = true; if (hostField.hasValueChanged (settings.getHost ())) changed = true; if (portField.hasValueChanged (settings.getPort ())) changed = true; if (eomTimeoutField.hasValueChanged (settings.getEomTimeout ())) changed = true; if (idleTimeoutField.hasValueChanged (settings.getIdleTimeout ())) changed = true; return changed; } public boolean hasError () { return statusBar.hasError (); } private boolean checkValues () { return enabledField.checkValue () && hostField.checkValue () && portField.checkValue () && eomTimeoutField.checkValue () && idleTimeoutField.checkValue (); } private void setButtonsEnabled () { boolean enabled = frontend.isStopped () && hasUnappliedChanges (); Gui.setEnabled (applyButton, enabled); Gui.setEnabled (resetButton, enabled); fireStatusChanged (); } private void getValuesFromModel () { statusBar.clear (); enabledField.setValue (settings.isEnabled ()); hostField.setValue (settings.getHost ()); portField.setValue (settings.getPort ()); eomTimeoutField.setValue (settings.getEomTimeout ()); idleTimeoutField.setValue (settings.getIdleTimeout ()); setButtonsEnabled (); } private void putValuesToModel () { settings.setEnabled (enabledField.getValue ()); settings.setHost (hostField.getValue ()); settings.setPort (portField.getValue ()); settings.setEomTimeout (eomTimeoutField.getValue ()); settings.setIdleTimeout (idleTimeoutField.getValue ()); settings.fireValueChanged (); setButtonsEnabled (); } private class ApplyButtonListener implements ActionListener { public void actionPerformed (ActionEvent e) { Event.checkIsEventDispatchThread (); if (!checkValues ()) return; putValuesToModel (); statusBar.clear (); } } private void fireStatusChanged () { statusListeners.fireValueChanged (this); } public void addStatusListener (ValueListener l) { statusListeners.addListener (l); } public void removeStatusListener (ValueListener l) { statusListeners.removeListener (l); } }