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