src/net/pterodactylus/jsite/gui/ManageNodesDialog.java

   1 /*
   2  * jSite2 - ManageNodeDialog.java -
   3  * Copyright © 2008 David Roden
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 package net.pterodactylus.jsite.gui;
  21
  22 import java.awt.BorderLayout;
  23 import java.awt.FlowLayout;
  24 import java.awt.event.ActionEvent;
  25 import java.util.ArrayList;
  26 import java.util.Collection;
  27 import java.util.Iterator;
  28 import java.util.List;
  29
  30 import javax.swing.AbstractListModel;
  31 import javax.swing.BorderFactory;
  32 import javax.swing.JButton;
  33 import javax.swing.JDialog;
  34 import javax.swing.JList;
  35 import javax.swing.JOptionPane;
  36 import javax.swing.JPanel;
  37 import javax.swing.JScrollPane;
  38 import javax.swing.border.EtchedBorder;
  39 import javax.swing.event.ListSelectionEvent;
  40 import javax.swing.event.ListSelectionListener;
  41
  42 import net.pterodactylus.jsite.core.Core;
  43 import net.pterodactylus.jsite.core.Node;
  44 import net.pterodactylus.jsite.i18n.I18n;
  45 import net.pterodactylus.jsite.i18n.I18nable;
  46 import net.pterodactylus.jsite.i18n.gui.I18nAction;
  47 import net.pterodactylus.jsite.main.Version;
  48 import net.pterodactylus.util.swing.SwingUtils;
  49
  50 /**
  51  * Dialog that lets the user manage her nodes.
  52  *
  53  * @author David ‘Bombe’ Roden &lt;bombe@freenetproject.org&gt;
  54  * @version $Id$
  55  */
  56 public class ManageNodesDialog extends JDialog implements ListSelectionListener, I18nable {
  57
  58         /** The core. */
  59         private final Core core;
  60
  61         /** The original list of nodes. */
  62         private List<Node> originalNodeList;
  63
  64         /** The “add node” action. */
  65         private I18nAction addNodeAction;
  66
  67         /** The “edit node” action. */
  68         private I18nAction editNodeAction;
  69
  70         /** The “delete node” action. */
  71         private I18nAction deleteNodeAction;
  72
  73         /** The “okay” action. */
  74         private I18nAction okayAction;
  75
  76         /** The “cancel” action. */
  77         private I18nAction cancelAction;
  78
  79         /** The “edit node” dialog. */
  80         private EditNodeDialog editNodeDialog;
  81
  82         /** The node list. */
  83         private JList nodeList;
  84
  85         /** The mode for the node list. */
  86         private NodeListModel nodeListModel = new NodeListModel();
  87
  88         /**
  89          * Creates a new node manager dialog.
  90          *
  91          * @param swingInterface
  92          *            The Swing interface
  93          */
  94         public ManageNodesDialog(SwingInterface swingInterface) {
  95                 super(swingInterface.getMainWindow(), I18n.get("manageNodesDialog.title") + " – jSite " + Version.getVersion(), true);
  96                 this.core = swingInterface.getCore();
  97                 initActions();
  98                 initComponents();
  99                 initDialogs();
 100                 pack();
 101                 I18n.registerI18nable(this);
 102                 SwingUtils.center(this);
 103         }
 104
 105         //
 106         // ACCESSORS
 107         //
 108
 109         /**
 110          * Returns the list of nodes.
 111          *
 112          * @return The list of nodes
 113          */
 114         public List<Node> getNodeList() {
 115                 return originalNodeList;
 116         }
 117
 118         /**
 119          * Sets the list of nodes.
 120          *
 121          * @param nodeList
 122          *            The list of nodes
 123          */
 124         public void setNodeList(List<Node> nodeList) {
 125                 originalNodeList = nodeList;
 126                 nodeListModel.clear();
 127                 for (Node node: nodeList) {
 128                         nodeListModel.addNode(node);
 129                 }
 130         }
 131
 132         //
 133         // PRIVATE METHODS
 134         //
 135
 136         /**
 137          * Initializes all actions.
 138          */
 139         private void initActions() {
 140                 okayAction = new I18nAction("general.button.okay") {
 141
 142                         /**
 143                          * {@inheritDoc}
 144                          */
 145                         @SuppressWarnings("synthetic-access")
 146                         public void actionPerformed(ActionEvent e) {
 147                                 confirm();
 148                         }
 149                 };
 150                 cancelAction = new I18nAction("general.button.cancel") {
 151
 152                         /**
 153                          * {@inheritDoc}
 154                          */
 155                         @SuppressWarnings("synthetic-access")
 156                         public void actionPerformed(ActionEvent e) {
 157                                 cancel();
 158                         }
 159                 };
 160                 addNodeAction = new I18nAction("manageNodesDialog.button.addNode") {
 161
 162                         /**
 163                          * {@inheritDoc}
 164                          */
 165                         @SuppressWarnings("synthetic-access")
 166                         public void actionPerformed(ActionEvent e) {
 167                                 addNode();
 168                         }
 169                 };
 170                 editNodeAction = new I18nAction("manageNodesDialog.button.editNode", false) {
 171
 172                         /**
 173                          * {@inheritDoc}
 174                          */
 175                         @SuppressWarnings("synthetic-access")
 176                         public void actionPerformed(ActionEvent e) {
 177                                 editNode();
 178                         }
 179                 };
 180                 deleteNodeAction = new I18nAction("manageNodesDialog.button.deleteNode", false) {
 181
 182                         /**
 183                          * {@inheritDoc}
 184                          */
 185                         @SuppressWarnings("synthetic-access")
 186                         public void actionPerformed(ActionEvent e) {
 187                                 deleteNodes();
 188                         }
 189                 };
 190         }
 191
 192         /**
 193          * Initializes all components.
 194          */
 195         private void initComponents() {
 196                 JPanel rootPanel = new JPanel(new BorderLayout(12, 12));
 197                 rootPanel.setBorder(BorderFactory.createEmptyBorder(12, 12, 12, 12));
 198
 199                 JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.TRAILING, 12, 12));
 200                 rootPanel.add(buttonPanel, BorderLayout.PAGE_END);
 201                 buttonPanel.setBorder(BorderFactory.createEmptyBorder(-12, -12, -12, -12));
 202
 203                 buttonPanel.add(new JButton(cancelAction));
 204                 JButton okayButton = new JButton(okayAction);
 205                 getRootPane().setDefaultButton(okayButton);
 206                 buttonPanel.add(okayButton);
 207
 208                 JPanel contentPanel = new JPanel(new BorderLayout(12, 12));
 209                 rootPanel.add(contentPanel, BorderLayout.CENTER);
 210                 contentPanel.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createEtchedBorder(EtchedBorder.LOWERED), BorderFactory.createEmptyBorder(12, 12, 12, 12)));
 211
 212                 JPanel listButtonPanel = new JPanel(new FlowLayout(FlowLayout.CENTER, 12, 12));
 213                 contentPanel.add(listButtonPanel, BorderLayout.PAGE_END);
 214                 listButtonPanel.setBorder(BorderFactory.createEmptyBorder(-12, -12, -12, -12));
 215                 listButtonPanel.add(new JButton(addNodeAction));
 216                 listButtonPanel.add(new JButton(editNodeAction));
 217                 listButtonPanel.add(new JButton(deleteNodeAction));
 218
 219                 nodeList = new JList(nodeListModel);
 220                 nodeList.addListSelectionListener(this);
 221                 contentPanel.add(new JScrollPane(nodeList), BorderLayout.CENTER);
 222
 223                 setContentPane(rootPanel);
 224         }
 225
 226         /**
 227          * Initializes all child dialogs.
 228          */
 229         private void initDialogs() {
 230                 editNodeDialog = new EditNodeDialog(this);
 231         }
 232
 233         //
 234         // PRIVATE ACTIONS
 235         //
 236
 237         /**
 238          * Adds a new node via {@link #editNodeDialog}.
 239          */
 240         private void addNode() {
 241                 editNodeDialog.setNodeName("New Node");
 242                 editNodeDialog.setNodeHostname("localhost");
 243                 editNodeDialog.setNodePort(9481);
 244                 editNodeDialog.setNodeOnSameMachine(true);
 245                 editNodeDialog.setVisible(true);
 246                 if (!editNodeDialog.wasCancelled()) {
 247                         Node newNode = new Node();
 248                         newNode.setName(editNodeDialog.getNodeName());
 249                         newNode.setHostname(editNodeDialog.getNodeHostname());
 250                         newNode.setPort(editNodeDialog.getNodePort());
 251                         nodeListModel.addNode(newNode);
 252                 }
 253         }
 254
 255         /**
 256          * Edits a node via {@link #editNodeDialog}.
 257          */
 258         private void editNode() {
 259                 Node selectedNode = (Node) nodeList.getSelectedValue();
 260                 editNodeDialog.setNodeName(selectedNode.getName());
 261                 editNodeDialog.setNodeHostname(selectedNode.getHostname());
 262                 editNodeDialog.setNodePort(selectedNode.getPort());
 263                 editNodeDialog.setNodeOnSameMachine(selectedNode.isSameMachine());
 264                 editNodeDialog.setVisible(true);
 265                 if (!editNodeDialog.wasCancelled()) {
 266                         selectedNode.setName(editNodeDialog.getNodeName());
 267                         selectedNode.setHostname(editNodeDialog.getNodeHostname());
 268                         selectedNode.setPort(editNodeDialog.getNodePort());
 269                         selectedNode.setSameMachine(editNodeDialog.isNodeOnSameMachine());
 270                         nodeList.repaint();
 271                 }
 272         }
 273
 274         /**
 275          * Deletes the selected node.
 276          */
 277         private void deleteNodes() {
 278                 Object[] selectedNodes = nodeList.getSelectedValues();
 279                 for (Object node: selectedNodes) {
 280                         Node selectedNode = (Node) node;
 281                         if (core.isNodeConnected(selectedNode)) {
 282                                 int response = JOptionPane.showConfirmDialog(this, I18n.get("manageNodesDialog.error.nodeConnected.message", selectedNode.getName()), I18n.get("manageNodesDialog.error.nodeConnected.title"), JOptionPane.YES_NO_CANCEL_OPTION, JOptionPane.WARNING_MESSAGE);
 283                                 if (response == JOptionPane.CANCEL_OPTION) {
 284                                         break;
 285                                 } else if (response == JOptionPane.NO_OPTION) {
 286                                         continue;
 287                                 }
 288                         }
 289                         nodeListModel.removeNode(selectedNode);
 290                 }
 291                 nodeList.clearSelection();
 292         }
 293
 294         /**
 295          * Checks whether the list of nodes is not empty.
 296          *
 297          * @return <code>true</code> if there is at least one node defined,
 298          *         <code>false</code> otherwise
 299          */
 300         private boolean verifyNodesExist() {
 301                 return nodeListModel.getSize() > 0;
 302         }
 303
 304         /**
 305          * This method is called when the “okay” button is pressed. The nodes from
 306          * the list are read and the {@link #originalNodeList} member is set so that
 307          * the calling code can use {@link #getNodeList()} to get the changed
 308          * values.
 309          */
 310         private void confirm() {
 311                 if (!verifyNodesExist()) {
 312                         JOptionPane.showMessageDialog(this, I18n.get("manageNodesDialog.error.nodeListEmpty.message"), I18n.get("manageNodesDialog.error.nodeListEmpty.title"), JOptionPane.ERROR_MESSAGE);
 313                         return;
 314                 }
 315                 originalNodeList.clear();
 316                 for (Node node: nodeListModel) {
 317                         originalNodeList.add(node);
 318                 }
 319                 setVisible(false);
 320         }
 321
 322         /**
 323          * Cancels the dialog.
 324          */
 325         private void cancel() {
 326                 setVisible(false);
 327         }
 328
 329         //
 330         // INTERFACE ListSelectionListener
 331         //
 332
 333         /**
 334          * {@inheritDoc}
 335          */
 336         public void valueChanged(ListSelectionEvent listSelectionEvent) {
 337                 JList list = (JList) listSelectionEvent.getSource();
 338                 int selectCount = list.getSelectedIndices().length;
 339                 editNodeAction.setEnabled(selectCount == 1);
 340                 deleteNodeAction.setEnabled(selectCount >= 1);
 341         }
 342
 343         //
 344         // INTERFACE I18nable
 345         //
 346
 347         /**
 348          * {@inheritDoc}
 349          */
 350         public void updateI18n() {
 351                 okayAction.updateI18n();
 352                 cancelAction.updateI18n();
 353                 addNodeAction.updateI18n();
 354                 editNodeAction.updateI18n();
 355                 deleteNodeAction.updateI18n();
 356                 setTitle(I18n.get("manageNodesDialog.title") + " – jSite " + Version.getVersion());
 357                 SwingUtils.repackCentered(this);
 358         }
 359
 360         /**
 361          * List model for the {@link ManageNodesDialog#nodeList}. TODO
 362          *
 363          * @author David ‘Bombe’ Roden &lt;bombe@freenetproject.org&gt;
 364          * @version $Id$
 365          */
 366         private class NodeListModel extends AbstractListModel implements Iterable<Node> {
 367
 368                 /** The list of nodes. */
 369                 @SuppressWarnings("hiding")
 370                 private final List<Node> nodeList = new ArrayList<Node>();
 371
 372                 /**
 373                  * Creates a new node list model.
 374                  */
 375                 public NodeListModel() {
 376                 }
 377
 378                 /**
 379                  * Adds the given node to the list model.
 380                  *
 381                  * @see Collection#add(Object)
 382                  * @param node
 383                  *            The node to add
 384                  */
 385                 public void addNode(Node node) {
 386                         nodeList.add(node);
 387                         fireIntervalAdded(this, nodeList.size() - 1, nodeList.size() - 1);
 388                 }
 389
 390                 /**
 391                  * Removes the given node from the list model.
 392                  *
 393                  * @see Collection#remove(Object)
 394                  * @param node
 395                  *            The node to remove
 396                  */
 397                 public void removeNode(Node node) {
 398                         int nodeIndex = nodeList.indexOf(node);
 399                         nodeList.remove(node);
 400                         fireIntervalRemoved(this, nodeIndex, nodeIndex);
 401                 }
 402
 403                 /**
 404                  * Removes all nodes from the list model.
 405                  *
 406                  * @see Collection#clear()
 407                  */
 408                 public void clear() {
 409                         int nodeCount = nodeList.size();
 410                         if (nodeCount > 0) {
 411                                 nodeList.clear();
 412                                 fireIntervalRemoved(this, 0, nodeCount - 1);
 413                         }
 414                 }
 415
 416                 /**
 417                  * {@inheritDoc}
 418                  */
 419                 public Iterator<Node> iterator() {
 420                         return nodeList.iterator();
 421                 }
 422
 423                 /**
 424                  * {@inheritDoc}
 425                  */
 426                 @SuppressWarnings("synthetic-access")
 427                 public Object getElementAt(int index) {
 428                         return nodeList.get(index);
 429                 }
 430
 431                 /**
 432                  * {@inheritDoc}
 433                  */
 434                 public int getSize() {
 435                         return nodeList.size();
 436                 }
 437
 438         }
 439
 440 }