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.setVisible(true);
 245                 if (!editNodeDialog.wasCancelled()) {
 246                         Node newNode = new Node();
 247                         newNode.setName(editNodeDialog.getNodeName());
 248                         newNode.setHostname(editNodeDialog.getNodeHostname());
 249                         newNode.setPort(editNodeDialog.getNodePort());
 250                         nodeListModel.addNode(newNode);
 251                 }
 252         }
 253
 254         /**
 255          * Edits a node via {@link #editNodeDialog}.
 256          */
 257         private void editNode() {
 258                 Node selectedNode = (Node) nodeList.getSelectedValue();
 259                 editNodeDialog.setNodeName(selectedNode.getName());
 260                 editNodeDialog.setNodeHostname(selectedNode.getHostname());
 261                 editNodeDialog.setNodePort(selectedNode.getPort());
 262                 editNodeDialog.setVisible(true);
 263                 if (!editNodeDialog.wasCancelled()) {
 264                         selectedNode.setName(editNodeDialog.getNodeName());
 265                         selectedNode.setHostname(editNodeDialog.getNodeHostname());
 266                         selectedNode.setPort(editNodeDialog.getNodePort());
 267                         nodeList.repaint();
 268                 }
 269         }
 270
 271         /**
 272          * Deletes the selected node.
 273          */
 274         private void deleteNodes() {
 275                 Object[] selectedNodes = nodeList.getSelectedValues();
 276                 for (Object node: selectedNodes) {
 277                         Node selectedNode = (Node) node;
 278                         if (core.isNodeConnected(selectedNode)) {
 279                                 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);
 280                                 if (response == JOptionPane.CANCEL_OPTION) {
 281                                         break;
 282                                 } else if (response == JOptionPane.NO_OPTION) {
 283                                         continue;
 284                                 }
 285                         }
 286                         nodeListModel.removeNode(selectedNode);
 287                 }
 288                 nodeList.clearSelection();
 289         }
 290
 291         /**
 292          * Checks whether the list of nodes is not empty.
 293          *
 294          * @return <code>true</code> if there is at least one node defined,
 295          *         <code>false</code> otherwise
 296          */
 297         private boolean verifyNodesExist() {
 298                 return nodeListModel.getSize() > 0;
 299         }
 300
 301         /**
 302          * This method is called when the “okay” button is pressed. The nodes from
 303          * the list are read and the {@link #originalNodeList} member is set so that
 304          * the calling code can use {@link #getNodeList()} to get the changed
 305          * values.
 306          */
 307         private void confirm() {
 308                 if (!verifyNodesExist()) {
 309                         JOptionPane.showMessageDialog(this, I18n.get("manageNodesDialog.error.nodeListEmpty.message"), I18n.get("manageNodesDialog.error.nodeListEmpty.title"), JOptionPane.ERROR_MESSAGE);
 310                         return;
 311                 }
 312                 originalNodeList.clear();
 313                 for (Node node: nodeListModel) {
 314                         originalNodeList.add(node);
 315                 }
 316                 setVisible(false);
 317         }
 318
 319         /**
 320          * Cancels the dialog.
 321          */
 322         private void cancel() {
 323                 setVisible(false);
 324         }
 325
 326         //
 327         // INTERFACE ListSelectionListener
 328         //
 329
 330         /**
 331          * {@inheritDoc}
 332          */
 333         public void valueChanged(ListSelectionEvent listSelectionEvent) {
 334                 JList list = (JList) listSelectionEvent.getSource();
 335                 int selectCount = list.getSelectedIndices().length;
 336                 editNodeAction.setEnabled(selectCount == 1);
 337                 deleteNodeAction.setEnabled(selectCount >= 1);
 338         }
 339
 340         //
 341         // INTERFACE I18nable
 342         //
 343
 344         /**
 345          * {@inheritDoc}
 346          */
 347         public void updateI18n() {
 348                 okayAction.updateI18n();
 349                 cancelAction.updateI18n();
 350                 addNodeAction.updateI18n();
 351                 editNodeAction.updateI18n();
 352                 deleteNodeAction.updateI18n();
 353                 setTitle(I18n.get("manageNodesDialog.title") + " – jSite " + Version.getVersion());
 354                 SwingUtils.repackCentered(this);
 355         }
 356
 357         /**
 358          * List model for the {@link ManageNodesDialog#nodeList}. TODO
 359          *
 360          * @author David ‘Bombe’ Roden &lt;bombe@freenetproject.org&gt;
 361          * @version $Id$
 362          */
 363         private class NodeListModel extends AbstractListModel implements Iterable<Node> {
 364
 365                 /** The list of nodes. */
 366                 @SuppressWarnings("hiding")
 367                 private final List<Node> nodeList = new ArrayList<Node>();
 368
 369                 /**
 370                  * Creates a new node list model.
 371                  */
 372                 public NodeListModel() {
 373                         /* do nothing. */
 374                 }
 375
 376                 /**
 377                  * Adds the given node to the list model.
 378                  *
 379                  * @see Collection#add(Object)
 380                  * @param node
 381                  *            The node to add
 382                  */
 383                 public void addNode(Node node) {
 384                         nodeList.add(node);
 385                         fireIntervalAdded(this, nodeList.size() - 1, nodeList.size() - 1);
 386                 }
 387
 388                 /**
 389                  * Removes the given node from the list model.
 390                  *
 391                  * @see Collection#remove(Object)
 392                  * @param node
 393                  *            The node to remove
 394                  */
 395                 public void removeNode(Node node) {
 396                         int nodeIndex = nodeList.indexOf(node);
 397                         nodeList.remove(node);
 398                         fireIntervalRemoved(this, nodeIndex, nodeIndex);
 399                 }
 400
 401                 /**
 402                  * Removes all nodes from the list model.
 403                  *
 404                  * @see Collection#clear()
 405                  */
 406                 public void clear() {
 407                         int nodeCount = nodeList.size();
 408                         if (nodeCount > 0) {
 409                                 nodeList.clear();
 410                                 fireIntervalRemoved(this, 0, nodeCount - 1);
 411                         }
 412                 }
 413
 414                 /**
 415                  * {@inheritDoc}
 416                  */
 417                 public Iterator<Node> iterator() {
 418                         return nodeList.iterator();
 419                 }
 420
 421                 /**
 422                  * {@inheritDoc}
 423                  */
 424                 @SuppressWarnings("synthetic-access")
 425                 public Object getElementAt(int index) {
 426                         return nodeList.get(index);
 427                 }
 428
 429                 /**
 430                  * {@inheritDoc}
 431                  */
 432                 public int getSize() {
 433                         return nodeList.size();
 434                 }
 435
 436         }
 437
 438 }