/*
* jSite - NodeManagerPage.java - Copyright © 2006–2014 David Roden
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package de.todesbaum.jsite.gui;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.util.ArrayList;
import java.util.List;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSpinner;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
import javax.swing.SpinnerNumberModel;
import javax.swing.border.EmptyBorder;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import de.todesbaum.jsite.application.Node;
import de.todesbaum.jsite.i18n.I18n;
import de.todesbaum.jsite.i18n.I18nContainer;
import de.todesbaum.util.swing.TLabel;
import de.todesbaum.util.swing.TWizard;
import de.todesbaum.util.swing.TWizardPage;
/**
* Wizard page that lets the user edit his nodes.
*
* @author David ‘Bombe’ Roden <bombe@freenetproject.org>
*/
public class NodeManagerPage extends TWizardPage implements ListSelectionListener, DocumentListener, ChangeListener {
/** List of node manager listeners. */
private List<NodeManagerListener> nodeManagerListeners = new ArrayList<NodeManagerListener>();
/** The “add node” action. */
protected Action addNodeAction;
/** The “delete node” action. */
protected Action deleteNodeAction;
/** The node list model. */
private DefaultListModel nodeListModel;
/** The node list. */
private JList nodeList;
/** The node name textfield. */
private JTextField nodeNameTextField;
/** The node hostname textfield. */
private JTextField nodeHostnameTextField;
/** The spinner for the node port. */
private JSpinner nodePortSpinner;
/**
* Creates a new node manager wizard page.
*
* @param wizard
* The wizard this page belongs to
*/
public NodeManagerPage(final TWizard wizard) {
super(wizard);
pageInit();
setHeading(I18n.getMessage("jsite.node-manager.heading"));
setDescription(I18n.getMessage("jsite.node-manager.description"));
I18nContainer.getInstance().registerRunnable(new Runnable() {
@Override
public void run() {
setHeading(I18n.getMessage("jsite.node-manager.heading"));
setDescription(I18n.getMessage("jsite.node-manager.description"));
}
});
}
/**
* Adds a listener for node manager events.
*
* @param nodeManagerListener
* The listener to add
*/
public void addNodeManagerListener(NodeManagerListener nodeManagerListener) {
nodeManagerListeners.add(nodeManagerListener);
}
/**
* Removes a listener for node manager events.
*
* @param nodeManagerListener
* The listener to remove
*/
public void removeNodeManagerListener(NodeManagerListener nodeManagerListener) {
nodeManagerListeners.remove(nodeManagerListener);
}
/**
* Notifies all listeners that the node configuration has changed.
*
* @param nodes
* The new list of nodes
*/
protected void fireNodesUpdated(Node[] nodes) {
for (NodeManagerListener nodeManagerListener : nodeManagerListeners) {
nodeManagerListener.nodesUpdated(nodes);
}
}
/**
* Notifies all listeners that a new node was selected.
*
* @param node
* The newly selected node
*/
protected void fireNodeSelected(Node node) {
for (NodeManagerListener nodeManagerListener : nodeManagerListeners) {
nodeManagerListener.nodeSelected(node);
}
}
/**
* Creates all actions.
*/
private void createActions() {
addNodeAction = new AbstractAction(I18n.getMessage("jsite.node-manager.add-node")) {
@Override
@SuppressWarnings("synthetic-access")
public void actionPerformed(ActionEvent actionEvent) {
addNode();
}
};
deleteNodeAction = new AbstractAction(I18n.getMessage("jsite.node-manager.delete-node")) {
@Override
@SuppressWarnings("synthetic-access")
public void actionPerformed(ActionEvent actionEvent) {
deleteNode();
}
};
deleteNodeAction.setEnabled(false);
I18nContainer.getInstance().registerRunnable(new Runnable() {
@Override
public void run() {
addNodeAction.putValue(Action.NAME, I18n.getMessage("jsite.node-manager.add-node"));
deleteNodeAction.putValue(Action.NAME, I18n.getMessage("jsite.node-manager.delete-node"));
}
});
}
/**
* Initializes the page and all components in it.
*/
private void pageInit() {
createActions();
nodeListModel = new DefaultListModel();
nodeList = new JList(nodeListModel);
nodeList.setName("node-list");
nodeList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
nodeList.addListSelectionListener(this);
nodeNameTextField = new JTextField("");
nodeNameTextField.getDocument().putProperty("Name", "node-name");
nodeNameTextField.getDocument().addDocumentListener(this);
nodeNameTextField.setEnabled(false);
nodeHostnameTextField = new JTextField("localhost");
nodeHostnameTextField.getDocument().putProperty("Name", "node-hostname");
nodeHostnameTextField.getDocument().addDocumentListener(this);
nodeHostnameTextField.setEnabled(false);
nodePortSpinner = new JSpinner(new SpinnerNumberModel(9481, 1, 65535, 1));
nodePortSpinner.setName("node-port");
nodePortSpinner.addChangeListener(this);
nodePortSpinner.setEnabled(false);
JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.LEADING, 12, 12));
buttonPanel.setBorder(new EmptyBorder(-12, -12, -12, -12));
buttonPanel.add(new JButton(addNodeAction));
buttonPanel.add(new JButton(deleteNodeAction));
JPanel centerPanel = new JPanel(new BorderLayout());
JPanel nodeInformationPanel = new JPanel(new GridBagLayout());
centerPanel.add(nodeInformationPanel, BorderLayout.PAGE_START);
nodeInformationPanel.add(buttonPanel, new GridBagConstraints(0, 0, 2, 1, 1.0, 0.0, GridBagConstraints.LINE_START, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
final JLabel nodeInformationLabel = new JLabel("<html><b>" + I18n.getMessage("jsite.node-manager.node-information") + "</b></html>");
nodeInformationPanel.add(nodeInformationLabel, new GridBagConstraints(0, 1, 2, 1, 1.0, 0.0, GridBagConstraints.LINE_START, GridBagConstraints.HORIZONTAL, new Insets(6, 0, 0, 0), 0, 0));
final TLabel nodeNameLabel = new TLabel(I18n.getMessage("jsite.node-manager.name") + ":", KeyEvent.VK_N, nodeNameTextField);
nodeInformationPanel.add(nodeNameLabel, new GridBagConstraints(0, 2, 1, 1, 0.0, 0.0, GridBagConstraints.LINE_START, GridBagConstraints.NONE, new Insets(6, 18, 0, 0), 0, 0));
nodeInformationPanel.add(nodeNameTextField, new GridBagConstraints(1, 2, 1, 1, 1.0, 0.0, GridBagConstraints.LINE_START, GridBagConstraints.HORIZONTAL, new Insets(6, 6, 0, 0), 0, 0));
final TLabel nodeHostnameLabel = new TLabel(I18n.getMessage("jsite.node-manager.hostname") + ":", KeyEvent.VK_H, nodeHostnameTextField);
nodeInformationPanel.add(nodeHostnameLabel, new GridBagConstraints(0, 3, 1, 1, 0.0, 0.0, GridBagConstraints.LINE_START, GridBagConstraints.NONE, new Insets(6, 18, 0, 0), 0, 0));
nodeInformationPanel.add(nodeHostnameTextField, new GridBagConstraints(1, 3, 1, 1, 1.0, 0.0, GridBagConstraints.LINE_START, GridBagConstraints.HORIZONTAL, new Insets(6, 6, 0, 0), 0, 0));
final TLabel nodePortLabel = new TLabel(I18n.getMessage("jsite.node-manager.port") + ":", KeyEvent.VK_P, nodePortSpinner);
nodeInformationPanel.add(nodePortLabel, new GridBagConstraints(0, 4, 1, 1, 0.0, 0.0, GridBagConstraints.LINE_START, GridBagConstraints.NONE, new Insets(6, 18, 0, 0), 0, 0));
nodeInformationPanel.add(nodePortSpinner, new GridBagConstraints(1, 4, 1, 1, 0.0, 0.0, GridBagConstraints.LINE_START, GridBagConstraints.NONE, new Insets(6, 6, 0, 0), 0, 0));
setLayout(new BorderLayout(12, 12));
final JScrollPane nodeListScrollPane = new JScrollPane(nodeList);
nodeListScrollPane.setPreferredSize(new Dimension(250, -1));
add(nodeListScrollPane, BorderLayout.LINE_START);
add(centerPanel, BorderLayout.CENTER);
I18nContainer.getInstance().registerRunnable(new Runnable() {
@Override
public void run() {
nodeInformationLabel.setText("<html><b>" + I18n.getMessage("jsite.node-manager.node-information") + "</b></html>");
nodeNameLabel.setText(I18n.getMessage("jsite.node-manager.name") + ":");
nodeHostnameLabel.setText(I18n.getMessage("jsite.node-manager.hostname") + ":");
nodePortLabel.setText(I18n.getMessage("jsite.node-manager.port") + ":");
}
});
}
/**
* {@inheritDoc}
*/
@Override
public void pageAdded(TWizard wizard) {
this.wizard.setNextEnabled(nodeListModel.getSize() > 0);
this.wizard.setPreviousName(I18n.getMessage("jsite.wizard.previous"));
this.wizard.setNextName(I18n.getMessage("jsite.wizard.next"));
this.wizard.setQuitName(I18n.getMessage("jsite.wizard.quit"));
}
/**
* Sets the node list.
*
* @param nodes
* The list of nodes
*/
public void setNodes(Node[] nodes) {
nodeListModel.clear();
for (Node node : nodes) {
nodeListModel.addElement(node);
}
nodeList.repaint();
fireNodesUpdated(nodes);
}
/**
* Returns the node list.
*
* @return The list of nodes
*/
public Node[] getNodes() {
Node[] returnNodes = new Node[nodeListModel.getSize()];
for (int nodeIndex = 0, nodeCount = nodeListModel.getSize(); nodeIndex < nodeCount; nodeIndex++) {
returnNodes[nodeIndex] = (Node) nodeListModel.get(nodeIndex);
}
return returnNodes;
}
/**
* Returns the currently selected node.
*
* @return The selected node, or <code>null</code> if no node is selected
*/
private Node getSelectedNode() {
return (Node) nodeList.getSelectedValue();
}
/**
* Updates node name or hostname when the user types into the textfields.
*
* @see #insertUpdate(DocumentEvent)
* @see #removeUpdate(DocumentEvent)
* @see #changedUpdate(DocumentEvent)
* @see DocumentListener
* @param documentEvent
* The document event
*/
private void updateTextField(DocumentEvent documentEvent) {
Node node = getSelectedNode();
if (node == null) {
return;
}
Document document = documentEvent.getDocument();
String documentText = null;
try {
documentText = document.getText(0, document.getLength());
} catch (BadLocationException ble1) {
/* ignore. */
}
if (documentText == null) {
return;
}
String documentName = (String) document.getProperty("Name");
if ("node-name".equals(documentName)) {
node.setName(documentText);
nodeList.repaint();
fireNodesUpdated(getNodes());
} else if ("node-hostname".equals(documentName)) {
node.setHostname(documentText);
nodeList.repaint();
fireNodesUpdated(getNodes());
}
}
//
// ACTIONS
//
/**
* Adds a new node to the list of nodes.
*/
private void addNode() {
Node node = new Node("localhost", 9481, I18n.getMessage("jsite.node-manager.new-node"));
nodeListModel.addElement(node);
nodeList.setSelectedIndex(nodeListModel.size() - 1);
deleteNodeAction.setEnabled(nodeListModel.size() > 1);
wizard.setNextEnabled(true);
fireNodesUpdated(getNodes());
}
/**
* Deletes the currently selected node from the list of nodes.
*/
private void deleteNode() {
Node node = getSelectedNode();
if (node == null) {
return;
}
if (JOptionPane.showConfirmDialog(wizard, I18n.getMessage("jsite.node-manager.delete-node.warning"), null, JOptionPane.OK_CANCEL_OPTION, JOptionPane.WARNING_MESSAGE) == JOptionPane.CANCEL_OPTION) {
return;
}
int nodeIndex = nodeListModel.indexOf(node);
nodeListModel.removeElement(node);
nodeList.repaint();
fireNodeSelected((Node) nodeListModel.get(Math.min(nodeIndex, nodeListModel.size() - 1)));
fireNodesUpdated(getNodes());
deleteNodeAction.setEnabled(nodeListModel.size() > 1);
wizard.setNextEnabled(nodeListModel.size() > 0);
}
//
// INTERFACE ListSelectionListener
//
/**
* {@inheritDoc}
*/
@Override
@SuppressWarnings("null")
public void valueChanged(ListSelectionEvent e) {
Object source = e.getSource();
if (source instanceof JList) {
JList sourceList = (JList) source;
if ("node-list".equals(sourceList.getName())) {
Node node = (Node) sourceList.getSelectedValue();
boolean enabled = (node != null);
nodeNameTextField.setEnabled(enabled);
nodeHostnameTextField.setEnabled(enabled);
nodePortSpinner.setEnabled(enabled);
deleteNodeAction.setEnabled(enabled && (nodeListModel.size() > 1));
if (enabled) {
nodeNameTextField.setText(node.getName());
nodeHostnameTextField.setText(node.getHostname());
nodePortSpinner.setValue(node.getPort());
} else {
nodeNameTextField.setText("");
nodeHostnameTextField.setText("localhost");
nodePortSpinner.setValue(9481);
}
}
}
}
//
// INTERFACE DocumentListener
//
/**
* {@inheritDoc}
*/
@Override
public void insertUpdate(DocumentEvent e) {
updateTextField(e);
}
/**
* {@inheritDoc}
*/
@Override
public void removeUpdate(DocumentEvent e) {
updateTextField(e);
}
/**
* {@inheritDoc}
*/
@Override
public void changedUpdate(DocumentEvent e) {
updateTextField(e);
}
//
// INTERFACE ChangeListener
//
/**
* {@inheritDoc}
*/
@Override
public void stateChanged(ChangeEvent e) {
Object source = e.getSource();
Node selectedNode = getSelectedNode();
if (selectedNode == null) {
return;
}
if (source instanceof JSpinner) {
JSpinner sourceSpinner = (JSpinner) source;
if ("node-port".equals(sourceSpinner.getName())) {
selectedNode.setPort((Integer) sourceSpinner.getValue());
fireNodeSelected(selectedNode);
nodeList.repaint();
}
}
}
}