src/qt/bitcoingui.cpp

   1 /*
   2  * Qt4 bitcoin GUI.
   3  *
   4  * W.J. van der Laan 2011-2012
   5  * The Bitcoin Developers 2011-2012
   6  */
   7 #include "bitcoingui.h"
   8 #include "transactiontablemodel.h"
   9 #include "addressbookpage.h"
  10 #include "sendcoinsdialog.h"
  11 #include "signverifymessagedialog.h"
  12 #include "optionsdialog.h"
  13 #include "aboutdialog.h"
  14 #include "clientmodel.h"
  15 #include "walletmodel.h"
  16 #include "editaddressdialog.h"
  17 #include "optionsmodel.h"
  18 #include "transactiondescdialog.h"
  19 #include "addresstablemodel.h"
  20 #include "transactionview.h"
  21 #include "overviewpage.h"
  22 #include "bitcoinunits.h"
  23 #include "guiconstants.h"
  24 #include "askpassphrasedialog.h"
  25 #include "notificator.h"
  26 #include "guiutil.h"
  27 #include "rpcconsole.h"
  28
  29 #ifdef Q_OS_MAC
  30 #include "macdockiconhandler.h"
  31 #endif
  32
  33 #include <QApplication>
  34 #include <QMainWindow>
  35 #include <QMenuBar>
  36 #include <QMenu>
  37 #include <QIcon>
  38 #include <QTabWidget>
  39 #include <QVBoxLayout>
  40 #include <QToolBar>
  41 #include <QStatusBar>
  42 #include <QLabel>
  43 #include <QLineEdit>
  44 #include <QPushButton>
  45 #include <QLocale>
  46 #include <QMessageBox>
  47 #include <QProgressBar>
  48 #include <QStackedWidget>
  49 #include <QDateTime>
  50 #include <QMovie>
  51 #include <QFileDialog>
  52 #include <QDesktopServices>
  53 #include <QTimer>
  54 #include <QDragEnterEvent>
  55 #include <QUrl>
  56 #include <QStyle>
  57
  58 #include <iostream>
  59
  60 BitcoinGUI::BitcoinGUI(QWidget *parent):
  61     QMainWindow(parent),
  62     clientModel(0),
  63     walletModel(0),
  64     encryptWalletAction(0),
  65     changePassphraseAction(0),
  66     aboutQtAction(0),
  67     trayIcon(0),
  68     notificator(0),
  69     rpcConsole(0)
  70 {
  71     resize(850, 550);
  72     setWindowTitle(tr("NovaCoin") + " - " + tr("Wallet"));
  73 #ifndef Q_OS_MAC
  74     qApp->setWindowIcon(QIcon(":icons/bitcoin"));
  75     setWindowIcon(QIcon(":icons/bitcoin"));
  76 #else
  77     setUnifiedTitleAndToolBarOnMac(true);
  78     QApplication::setAttribute(Qt::AA_DontShowIconsInMenus);
  79 #endif
  80     // Accept D&D of URIs
  81     setAcceptDrops(true);
  82
  83     // Create actions for the toolbar, menu bar and tray/dock icon
  84     createActions();
  85
  86     // Create application menu bar
  87     createMenuBar();
  88
  89     // Create the toolbars
  90     createToolBars();
  91
  92     // Create the tray icon (or setup the dock icon)
  93     createTrayIcon();
  94
  95     // Create tabs
  96     overviewPage = new OverviewPage();
  97
  98     transactionsPage = new QWidget(this);
  99     QVBoxLayout *vbox = new QVBoxLayout();
 100     transactionView = new TransactionView(this);
 101     vbox->addWidget(transactionView);
 102     transactionsPage->setLayout(vbox);
 103
 104     addressBookPage = new AddressBookPage(AddressBookPage::ForEditing, AddressBookPage::SendingTab);
 105
 106     receiveCoinsPage = new AddressBookPage(AddressBookPage::ForEditing, AddressBookPage::ReceivingTab);
 107
 108     sendCoinsPage = new SendCoinsDialog(this);
 109
 110     signVerifyMessageDialog = new SignVerifyMessageDialog(this);
 111
 112     centralWidget = new QStackedWidget(this);
 113     centralWidget->addWidget(overviewPage);
 114     centralWidget->addWidget(transactionsPage);
 115     centralWidget->addWidget(addressBookPage);
 116     centralWidget->addWidget(receiveCoinsPage);
 117     centralWidget->addWidget(sendCoinsPage);
 118     setCentralWidget(centralWidget);
 119
 120     // Create status bar
 121     statusBar();
 122
 123     // Status bar notification icons
 124     QFrame *frameBlocks = new QFrame();
 125     frameBlocks->setContentsMargins(0,0,0,0);
 126     frameBlocks->setMinimumWidth(56);
 127     frameBlocks->setMaximumWidth(56);
 128     QHBoxLayout *frameBlocksLayout = new QHBoxLayout(frameBlocks);
 129     frameBlocksLayout->setContentsMargins(3,0,3,0);
 130     frameBlocksLayout->setSpacing(3);
 131     labelEncryptionIcon = new QLabel();
 132     labelConnectionsIcon = new QLabel();
 133     labelBlocksIcon = new QLabel();
 134     frameBlocksLayout->addStretch();
 135     frameBlocksLayout->addWidget(labelEncryptionIcon);
 136     frameBlocksLayout->addStretch();
 137     frameBlocksLayout->addWidget(labelConnectionsIcon);
 138     frameBlocksLayout->addStretch();
 139     frameBlocksLayout->addWidget(labelBlocksIcon);
 140     frameBlocksLayout->addStretch();
 141
 142     // Progress bar and label for blocks download
 143     progressBarLabel = new QLabel();
 144     progressBarLabel->setVisible(false);
 145     progressBar = new QProgressBar();
 146     progressBar->setAlignment(Qt::AlignCenter);
 147     progressBar->setVisible(false);
 148
 149     // Override style sheet for progress bar for styles that have a segmented progress bar,
 150     // as they make the text unreadable (workaround for issue #1071)
 151     // See https://qt-project.org/doc/qt-4.8/gallery.html
 152     QString curStyle = qApp->style()->metaObject()->className();
 153     if(curStyle == "QWindowsStyle" || curStyle == "QWindowsXPStyle")
 154     {
 155         progressBar->setStyleSheet("QProgressBar { background-color: #e8e8e8; border: 1px solid grey; border-radius: 7px; padding: 1px; text-align: center; } QProgressBar::chunk { background: QLinearGradient(x1: 0, y1: 0, x2: 1, y2: 0, stop: 0 #FF8000, stop: 1 orange); border-radius: 7px; margin: 0px; }");
 156     }
 157
 158     statusBar()->addWidget(progressBarLabel);
 159     statusBar()->addWidget(progressBar);
 160     statusBar()->addPermanentWidget(frameBlocks);
 161
 162     syncIconMovie = new QMovie(":/movies/update_spinner", "mng", this);
 163
 164     // Clicking on a transaction on the overview page simply sends you to transaction history page
 165     connect(overviewPage, SIGNAL(transactionClicked(QModelIndex)), this, SLOT(gotoHistoryPage()));
 166     connect(overviewPage, SIGNAL(transactionClicked(QModelIndex)), transactionView, SLOT(focusTransaction(QModelIndex)));
 167
 168     // Double-clicking on a transaction on the transaction history page shows details
 169     connect(transactionView, SIGNAL(doubleClicked(QModelIndex)), transactionView, SLOT(showDetails()));
 170
 171     rpcConsole = new RPCConsole(this);
 172     connect(openRPCConsoleAction, SIGNAL(triggered()), rpcConsole, SLOT(show()));
 173
 174     // Clicking on "Verify Message" in the address book sends you to the verify message tab
 175     connect(addressBookPage, SIGNAL(verifyMessage(QString)), this, SLOT(gotoVerifyMessageTab(QString)));
 176     // Clicking on "Sign Message" in the receive coins page sends you to the sign message tab
 177     connect(receiveCoinsPage, SIGNAL(signMessage(QString)), this, SLOT(gotoSignMessageTab(QString)));
 178
 179     gotoOverviewPage();
 180 }
 181
 182 BitcoinGUI::~BitcoinGUI()
 183 {
 184     if(trayIcon) // Hide tray icon, as deleting will let it linger until quit (on Ubuntu)
 185         trayIcon->hide();
 186 #ifdef Q_OS_MAC
 187     delete appMenuBar;
 188 #endif
 189 }
 190
 191 void BitcoinGUI::createActions()
 192 {
 193     QActionGroup *tabGroup = new QActionGroup(this);
 194
 195     overviewAction = new QAction(QIcon(":/icons/overview"), tr("&Overview"), this);
 196     overviewAction->setToolTip(tr("Show general overview of wallet"));
 197     overviewAction->setCheckable(true);
 198     overviewAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_1));
 199     tabGroup->addAction(overviewAction);
 200
 201     sendCoinsAction = new QAction(QIcon(":/icons/send"), tr("&Send coins"), this);
 202     sendCoinsAction->setToolTip(tr("Send coins to a NovaCoin address"));
 203     sendCoinsAction->setCheckable(true);
 204     sendCoinsAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_2));
 205     tabGroup->addAction(sendCoinsAction);
 206
 207     receiveCoinsAction = new QAction(QIcon(":/icons/receiving_addresses"), tr("&Receive coins"), this);
 208     receiveCoinsAction->setToolTip(tr("Show the list of addresses for receiving payments"));
 209     receiveCoinsAction->setCheckable(true);
 210     receiveCoinsAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_3));
 211     tabGroup->addAction(receiveCoinsAction);
 212
 213     historyAction = new QAction(QIcon(":/icons/history"), tr("&Transactions"), this);
 214     historyAction->setToolTip(tr("Browse transaction history"));
 215     historyAction->setCheckable(true);
 216     historyAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_4));
 217     tabGroup->addAction(historyAction);
 218
 219     addressBookAction = new QAction(QIcon(":/icons/address-book"), tr("&Address Book"), this);
 220     addressBookAction->setToolTip(tr("Edit the list of stored addresses and labels"));
 221     addressBookAction->setCheckable(true);
 222     addressBookAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_5));
 223     tabGroup->addAction(addressBookAction);
 224
 225     connect(overviewAction, SIGNAL(triggered()), this, SLOT(showNormalIfMinimized()));
 226     connect(overviewAction, SIGNAL(triggered()), this, SLOT(gotoOverviewPage()));
 227     connect(sendCoinsAction, SIGNAL(triggered()), this, SLOT(showNormalIfMinimized()));
 228     connect(sendCoinsAction, SIGNAL(triggered()), this, SLOT(gotoSendCoinsPage()));
 229     connect(receiveCoinsAction, SIGNAL(triggered()), this, SLOT(showNormalIfMinimized()));
 230     connect(receiveCoinsAction, SIGNAL(triggered()), this, SLOT(gotoReceiveCoinsPage()));
 231     connect(historyAction, SIGNAL(triggered()), this, SLOT(showNormalIfMinimized()));
 232     connect(historyAction, SIGNAL(triggered()), this, SLOT(gotoHistoryPage()));
 233     connect(addressBookAction, SIGNAL(triggered()), this, SLOT(showNormalIfMinimized()));
 234     connect(addressBookAction, SIGNAL(triggered()), this, SLOT(gotoAddressBookPage()));
 235
 236     quitAction = new QAction(QIcon(":/icons/quit"), tr("E&xit"), this);
 237     quitAction->setToolTip(tr("Quit application"));
 238     quitAction->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q));
 239     quitAction->setMenuRole(QAction::QuitRole);
 240     aboutAction = new QAction(QIcon(":/icons/bitcoin"), tr("&About NovaCoin"), this);
 241     aboutAction->setToolTip(tr("Show information about NovaCoin"));
 242     aboutAction->setMenuRole(QAction::AboutRole);
 243     aboutQtAction = new QAction(QIcon(":/trolltech/qmessagebox/images/qtlogo-64.png"), tr("About &Qt"), this);
 244     aboutQtAction->setToolTip(tr("Show information about Qt"));
 245     aboutQtAction->setMenuRole(QAction::AboutQtRole);
 246     optionsAction = new QAction(QIcon(":/icons/options"), tr("&Options..."), this);
 247     optionsAction->setToolTip(tr("Modify configuration options for NovaCoin"));
 248     optionsAction->setMenuRole(QAction::PreferencesRole);
 249     toggleHideAction = new QAction(QIcon(":/icons/bitcoin"), tr("&Show / Hide"), this);
 250     encryptWalletAction = new QAction(QIcon(":/icons/lock_closed"), tr("&Encrypt Wallet..."), this);
 251     encryptWalletAction->setToolTip(tr("Encrypt or decrypt wallet"));
 252     encryptWalletAction->setCheckable(true);
 253     backupWalletAction = new QAction(QIcon(":/icons/filesave"), tr("&Backup Wallet..."), this);
 254     backupWalletAction->setToolTip(tr("Backup wallet to another location"));
 255     changePassphraseAction = new QAction(QIcon(":/icons/key"), tr("&Change Passphrase..."), this);
 256     changePassphraseAction->setToolTip(tr("Change the passphrase used for wallet encryption"));
 257     signMessageAction = new QAction(QIcon(":/icons/edit"), tr("Sign &message..."), this);
 258     verifyMessageAction = new QAction(QIcon(":/icons/transaction_0"), tr("&Verify message..."), this);
 259
 260     exportAction = new QAction(QIcon(":/icons/export"), tr("&Export..."), this);
 261     exportAction->setToolTip(tr("Export the data in the current tab to a file"));
 262     openRPCConsoleAction = new QAction(QIcon(":/icons/debugwindow"), tr("&Debug window"), this);
 263     openRPCConsoleAction->setToolTip(tr("Open debugging and diagnostic console"));
 264
 265     connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
 266     connect(aboutAction, SIGNAL(triggered()), this, SLOT(aboutClicked()));
 267     connect(aboutQtAction, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
 268     connect(optionsAction, SIGNAL(triggered()), this, SLOT(optionsClicked()));
 269     connect(toggleHideAction, SIGNAL(triggered()), this, SLOT(toggleHidden()));
 270     connect(encryptWalletAction, SIGNAL(triggered(bool)), this, SLOT(encryptWallet(bool)));
 271     connect(backupWalletAction, SIGNAL(triggered()), this, SLOT(backupWallet()));
 272     connect(changePassphraseAction, SIGNAL(triggered()), this, SLOT(changePassphrase()));
 273     connect(signMessageAction, SIGNAL(triggered()), this, SLOT(gotoSignMessageTab()));
 274     connect(verifyMessageAction, SIGNAL(triggered()), this, SLOT(gotoVerifyMessageTab()));
 275 }
 276
 277 void BitcoinGUI::createMenuBar()
 278 {
 279 #ifdef Q_OS_MAC
 280     // Create a decoupled menu bar on Mac which stays even if the window is closed
 281     appMenuBar = new QMenuBar();
 282 #else
 283     // Get the main window's menu bar on other platforms
 284     appMenuBar = menuBar();
 285 #endif
 286
 287     // Configure the menus
 288     QMenu *file = appMenuBar->addMenu(tr("&File"));
 289     file->addAction(backupWalletAction);
 290     file->addAction(exportAction);
 291     file->addAction(signMessageAction);
 292     file->addAction(verifyMessageAction);
 293     file->addSeparator();
 294     file->addAction(quitAction);
 295
 296     QMenu *settings = appMenuBar->addMenu(tr("&Settings"));
 297     settings->addAction(encryptWalletAction);
 298     settings->addAction(changePassphraseAction);
 299     settings->addSeparator();
 300     settings->addAction(optionsAction);
 301
 302     QMenu *help = appMenuBar->addMenu(tr("&Help"));
 303     help->addAction(openRPCConsoleAction);
 304     help->addSeparator();
 305     help->addAction(aboutAction);
 306     help->addAction(aboutQtAction);
 307 }
 308
 309 void BitcoinGUI::createToolBars()
 310 {
 311     QToolBar *toolbar = addToolBar(tr("Tabs toolbar"));
 312     toolbar->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 313     toolbar->addAction(overviewAction);
 314     toolbar->addAction(sendCoinsAction);
 315     toolbar->addAction(receiveCoinsAction);
 316     toolbar->addAction(historyAction);
 317     toolbar->addAction(addressBookAction);
 318
 319     QToolBar *toolbar2 = addToolBar(tr("Actions toolbar"));
 320     toolbar2->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 321     toolbar2->addAction(exportAction);
 322 }
 323
 324 void BitcoinGUI::setClientModel(ClientModel *clientModel)
 325 {
 326     this->clientModel = clientModel;
 327     if(clientModel)
 328     {
 329         // Replace some strings and icons, when using the testnet
 330         if(clientModel->isTestNet())
 331         {
 332             setWindowTitle(windowTitle() + QString(" ") + tr("[testnet]"));
 333 #ifndef Q_OS_MAC
 334             qApp->setWindowIcon(QIcon(":icons/bitcoin_testnet"));
 335             setWindowIcon(QIcon(":icons/bitcoin_testnet"));
 336 #else
 337             MacDockIconHandler::instance()->setIcon(QIcon(":icons/bitcoin_testnet"));
 338 #endif
 339             if(trayIcon)
 340             {
 341                 trayIcon->setToolTip(tr("NovaCoin client") + QString(" ") + tr("[testnet]"));
 342                 trayIcon->setIcon(QIcon(":/icons/toolbar_testnet"));
 343                 toggleHideAction->setIcon(QIcon(":/icons/toolbar_testnet"));
 344             }
 345
 346             aboutAction->setIcon(QIcon(":/icons/toolbar_testnet"));
 347         }
 348
 349         // Keep up to date with client
 350         setNumConnections(clientModel->getNumConnections());
 351         connect(clientModel, SIGNAL(numConnectionsChanged(int)), this, SLOT(setNumConnections(int)));
 352
 353         setNumBlocks(clientModel->getNumBlocks(), clientModel->getNumBlocksOfPeers());
 354         connect(clientModel, SIGNAL(numBlocksChanged(int,int)), this, SLOT(setNumBlocks(int,int)));
 355
 356         // Report errors from network/worker thread
 357         connect(clientModel, SIGNAL(error(QString,QString,bool)), this, SLOT(error(QString,QString,bool)));
 358
 359         rpcConsole->setClientModel(clientModel);
 360         addressBookPage->setOptionsModel(clientModel->getOptionsModel());
 361         receiveCoinsPage->setOptionsModel(clientModel->getOptionsModel());
 362     }
 363 }
 364
 365 void BitcoinGUI::setWalletModel(WalletModel *walletModel)
 366 {
 367     this->walletModel = walletModel;
 368     if(walletModel)
 369     {
 370         // Report errors from wallet thread
 371         connect(walletModel, SIGNAL(error(QString,QString,bool)), this, SLOT(error(QString,QString,bool)));
 372
 373         // Put transaction list in tabs
 374         transactionView->setModel(walletModel);
 375
 376         overviewPage->setModel(walletModel);
 377         addressBookPage->setModel(walletModel->getAddressTableModel());
 378         receiveCoinsPage->setModel(walletModel->getAddressTableModel());
 379         sendCoinsPage->setModel(walletModel);
 380         signVerifyMessageDialog->setModel(walletModel);
 381
 382         setEncryptionStatus(walletModel->getEncryptionStatus());
 383         connect(walletModel, SIGNAL(encryptionStatusChanged(int)), this, SLOT(setEncryptionStatus(int)));
 384
 385         // Balloon pop-up for new transaction
 386         connect(walletModel->getTransactionTableModel(), SIGNAL(rowsInserted(QModelIndex,int,int)),
 387                 this, SLOT(incomingTransaction(QModelIndex,int,int)));
 388
 389         // Ask for passphrase if needed
 390         connect(walletModel, SIGNAL(requireUnlock()), this, SLOT(unlockWallet()));
 391     }
 392 }
 393
 394 void BitcoinGUI::createTrayIcon()
 395 {
 396     QMenu *trayIconMenu;
 397 #ifndef Q_OS_MAC
 398     trayIcon = new QSystemTrayIcon(this);
 399     trayIconMenu = new QMenu(this);
 400     trayIcon->setContextMenu(trayIconMenu);
 401     trayIcon->setToolTip(tr("NovaCoin client"));
 402     trayIcon->setIcon(QIcon(":/icons/toolbar"));
 403     connect(trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
 404             this, SLOT(trayIconActivated(QSystemTrayIcon::ActivationReason)));
 405     trayIcon->show();
 406 #else
 407     // Note: On Mac, the dock icon is used to provide the tray's functionality.
 408     MacDockIconHandler *dockIconHandler = MacDockIconHandler::instance();
 409     trayIconMenu = dockIconHandler->dockMenu();
 410 #endif
 411
 412     // Configuration of the tray icon (or dock icon) icon menu
 413     trayIconMenu->addAction(toggleHideAction);
 414     trayIconMenu->addSeparator();
 415     trayIconMenu->addAction(sendCoinsAction);
 416     trayIconMenu->addAction(receiveCoinsAction);
 417     trayIconMenu->addSeparator();
 418     trayIconMenu->addAction(signMessageAction);
 419     trayIconMenu->addAction(verifyMessageAction);
 420     trayIconMenu->addSeparator();
 421     trayIconMenu->addAction(optionsAction);
 422     trayIconMenu->addAction(openRPCConsoleAction);
 423 #ifndef Q_OS_MAC // This is built-in on Mac
 424     trayIconMenu->addSeparator();
 425     trayIconMenu->addAction(quitAction);
 426 #endif
 427
 428     notificator = new Notificator(qApp->applicationName(), trayIcon);
 429 }
 430
 431 #ifndef Q_OS_MAC
 432 void BitcoinGUI::trayIconActivated(QSystemTrayIcon::ActivationReason reason)
 433 {
 434     if(reason == QSystemTrayIcon::Trigger)
 435     {
 436         // Click on system tray icon triggers show/hide of the main window
 437         toggleHideAction->trigger();
 438     }
 439 }
 440 #endif
 441
 442 void BitcoinGUI::optionsClicked()
 443 {
 444     if(!clientModel || !clientModel->getOptionsModel())
 445         return;
 446     OptionsDialog dlg;
 447     dlg.setModel(clientModel->getOptionsModel());
 448     dlg.exec();
 449 }
 450
 451 void BitcoinGUI::aboutClicked()
 452 {
 453     AboutDialog dlg;
 454     dlg.setModel(clientModel);
 455     dlg.exec();
 456 }
 457
 458 void BitcoinGUI::setNumConnections(int count)
 459 {
 460     QString icon;
 461     switch(count)
 462     {
 463     case 0: icon = ":/icons/connect_0"; break;
 464     case 1: case 2: case 3: icon = ":/icons/connect_1"; break;
 465     case 4: case 5: case 6: icon = ":/icons/connect_2"; break;
 466     case 7: case 8: case 9: icon = ":/icons/connect_3"; break;
 467     default: icon = ":/icons/connect_4"; break;
 468     }
 469     labelConnectionsIcon->setPixmap(QIcon(icon).pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 470     labelConnectionsIcon->setToolTip(tr("%n active connection(s) to NovaCoin network", "", count));
 471 }
 472
 473 void BitcoinGUI::setNumBlocks(int count, int nTotalBlocks)
 474 {
 475     // don't show / hide progress bar and its label if we have no connection to the network
 476     if (!clientModel || clientModel->getNumConnections() == 0)
 477     {
 478         progressBarLabel->setVisible(false);
 479         progressBar->setVisible(false);
 480
 481         return;
 482     }
 483
 484     QString strStatusBarWarnings = clientModel->getStatusBarWarnings();
 485     QString tooltip;
 486
 487     if(count < nTotalBlocks)
 488     {
 489         int nRemainingBlocks = nTotalBlocks - count;
 490         float nPercentageDone = count / (nTotalBlocks * 0.01f);
 491
 492         if (strStatusBarWarnings.isEmpty())
 493         {
 494             progressBarLabel->setText(tr("Synchronizing with network..."));
 495             progressBarLabel->setVisible(true);
 496             progressBar->setFormat(tr("~%n block(s) remaining", "", nRemainingBlocks));
 497             progressBar->setMaximum(nTotalBlocks);
 498             progressBar->setValue(count);
 499             progressBar->setVisible(true);
 500         }
 501
 502         tooltip = tr("Downloaded %1 of %2 blocks of transaction history (%3% done).").arg(count).arg(nTotalBlocks).arg(nPercentageDone, 0, 'f', 2);
 503     }
 504     else
 505     {
 506         if (strStatusBarWarnings.isEmpty())
 507             progressBarLabel->setVisible(false);
 508
 509         progressBar->setVisible(false);
 510         tooltip = tr("Downloaded %1 blocks of transaction history.").arg(count);
 511     }
 512
 513     // Override progressBarLabel text and hide progress bar, when we have warnings to display
 514     if (!strStatusBarWarnings.isEmpty())
 515     {
 516         progressBarLabel->setText(strStatusBarWarnings);
 517         progressBarLabel->setVisible(true);
 518         progressBar->setVisible(false);
 519     }
 520
 521     QDateTime lastBlockDate = clientModel->getLastBlockDate();
 522     int secs = lastBlockDate.secsTo(QDateTime::currentDateTime());
 523     QString text;
 524
 525     // Represent time from last generated block in human readable text
 526     if(secs <= 0)
 527     {
 528         // Fully up to date. Leave text empty.
 529     }
 530     else if(secs < 60)
 531     {
 532         text = tr("%n second(s) ago","",secs);
 533     }
 534     else if(secs < 60*60)
 535     {
 536         text = tr("%n minute(s) ago","",secs/60);
 537     }
 538     else if(secs < 24*60*60)
 539     {
 540         text = tr("%n hour(s) ago","",secs/(60*60));
 541     }
 542     else
 543     {
 544         text = tr("%n day(s) ago","",secs/(60*60*24));
 545     }
 546
 547     // Set icon state: spinning if catching up, tick otherwise
 548     if(secs < 90*60 && count >= nTotalBlocks)
 549     {
 550         tooltip = tr("Up to date") + QString(".<br>") + tooltip;
 551         labelBlocksIcon->setPixmap(QIcon(":/icons/synced").pixmap(STATUSBAR_ICONSIZE, STATUSBAR_ICONSIZE));
 552
 553         overviewPage->showOutOfSyncWarning(false);
 554     }
 555     else
 556     {
 557         tooltip = tr("Catching up...") + QString("<br>") + tooltip;
 558         labelBlocksIcon->setMovie(syncIconMovie);
 559         syncIconMovie->start();
 560
 561         overviewPage->showOutOfSyncWarning(true);
 562     }
 563
 564     if(!text.isEmpty())
 565     {
 566         tooltip += QString("<br>");
 567         tooltip += tr("Last received block was generated %1.").arg(text);
 568     }
 569
 570     // Don't word-wrap this (fixed-width) tooltip
 571     tooltip = QString("<nobr>") + tooltip + QString("</nobr>");
 572
 573     labelBlocksIcon->setToolTip(tooltip);
 574     progressBarLabel->setToolTip(tooltip);
 575     progressBar->setToolTip(tooltip);
 576 }
 577
 578 void BitcoinGUI::error(const QString &title, const QString &message, bool modal)
 579 {
 580     // Report errors from network/worker thread
 581     if(modal)
 582     {
 583         QMessageBox::critical(this, title, message, QMessageBox::Ok, QMessageBox::Ok);
 584     } else {
 585         notificator->notify(Notificator::Critical, title, message);
 586     }
 587 }
 588
 589 void BitcoinGUI::changeEvent(QEvent *e)
 590 {
 591     QMainWindow::changeEvent(e);
 592 #ifndef Q_OS_MAC // Ignored on Mac
 593     if(e->type() == QEvent::WindowStateChange)
 594     {
 595         if(clientModel && clientModel->getOptionsModel()->getMinimizeToTray())
 596         {
 597             QWindowStateChangeEvent *wsevt = static_cast<QWindowStateChangeEvent*>(e);
 598             if(!(wsevt->oldState() & Qt::WindowMinimized) && isMinimized())
 599             {
 600                 QTimer::singleShot(0, this, SLOT(hide()));
 601                 e->ignore();
 602             }
 603         }
 604     }
 605 #endif
 606 }
 607
 608 void BitcoinGUI::closeEvent(QCloseEvent *event)
 609 {
 610     if(clientModel)
 611     {
 612 #ifndef Q_OS_MAC // Ignored on Mac
 613         if(!clientModel->getOptionsModel()->getMinimizeToTray() &&
 614            !clientModel->getOptionsModel()->getMinimizeOnClose())
 615         {
 616             qApp->quit();
 617         }
 618 #endif
 619     }
 620     QMainWindow::closeEvent(event);
 621 }
 622
 623 void BitcoinGUI::askFee(qint64 nFeeRequired, bool *payFee)
 624 {
 625     QString strMessage =
 626         tr("This transaction is over the size limit.  You can still send it for a fee of %1, "
 627           "which goes to the nodes that process your transaction and helps to support the network.  "
 628           "Do you want to pay the fee?").arg(
 629                 BitcoinUnits::formatWithUnit(BitcoinUnits::BTC, nFeeRequired));
 630     QMessageBox::StandardButton retval = QMessageBox::question(
 631           this, tr("Confirm transaction fee"), strMessage,
 632           QMessageBox::Yes|QMessageBox::Cancel, QMessageBox::Yes);
 633     *payFee = (retval == QMessageBox::Yes);
 634 }
 635
 636 void BitcoinGUI::incomingTransaction(const QModelIndex & parent, int start, int end)
 637 {
 638     if(!walletModel || !clientModel)
 639         return;
 640     TransactionTableModel *ttm = walletModel->getTransactionTableModel();
 641     qint64 amount = ttm->index(start, TransactionTableModel::Amount, parent)
 642                     .data(Qt::EditRole).toULongLong();
 643     if(!clientModel->inInitialBlockDownload())
 644     {
 645         // On new transaction, make an info balloon
 646         // Unless the initial block download is in progress, to prevent balloon-spam
 647         QString date = ttm->index(start, TransactionTableModel::Date, parent)
 648                         .data().toString();
 649         QString type = ttm->index(start, TransactionTableModel::Type, parent)
 650                         .data().toString();
 651         QString address = ttm->index(start, TransactionTableModel::ToAddress, parent)
 652                         .data().toString();
 653         QIcon icon = qvariant_cast<QIcon>(ttm->index(start,
 654                             TransactionTableModel::ToAddress, parent)
 655                         .data(Qt::DecorationRole));
 656
 657         notificator->notify(Notificator::Information,
 658                             (amount)<0 ? tr("Sent transaction") :
 659                                          tr("Incoming transaction"),
 660                               tr("Date: %1\n"
 661                                  "Amount: %2\n"
 662                                  "Type: %3\n"
 663                                  "Address: %4\n")
 664                               .arg(date)
 665                               .arg(BitcoinUnits::formatWithUnit(walletModel->getOptionsModel()->getDisplayUnit(), amount, true))
 666                               .arg(type)
 667                               .arg(address), icon);
 668     }
 669 }
 670
 671 void BitcoinGUI::gotoOverviewPage()
 672 {
 673     overviewAction->setChecked(true);
 674     centralWidget->setCurrentWidget(overviewPage);
 675
 676     exportAction->setEnabled(false);
 677     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 678 }
 679
 680 void BitcoinGUI::gotoHistoryPage()
 681 {
 682     historyAction->setChecked(true);
 683     centralWidget->setCurrentWidget(transactionsPage);
 684
 685     exportAction->setEnabled(true);
 686     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 687     connect(exportAction, SIGNAL(triggered()), transactionView, SLOT(exportClicked()));
 688 }
 689
 690 void BitcoinGUI::gotoAddressBookPage()
 691 {
 692     addressBookAction->setChecked(true);
 693     centralWidget->setCurrentWidget(addressBookPage);
 694
 695     exportAction->setEnabled(true);
 696     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 697     connect(exportAction, SIGNAL(triggered()), addressBookPage, SLOT(exportClicked()));
 698 }
 699
 700 void BitcoinGUI::gotoReceiveCoinsPage()
 701 {
 702     receiveCoinsAction->setChecked(true);
 703     centralWidget->setCurrentWidget(receiveCoinsPage);
 704
 705     exportAction->setEnabled(true);
 706     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 707     connect(exportAction, SIGNAL(triggered()), receiveCoinsPage, SLOT(exportClicked()));
 708 }
 709
 710 void BitcoinGUI::gotoSendCoinsPage()
 711 {
 712     sendCoinsAction->setChecked(true);
 713     centralWidget->setCurrentWidget(sendCoinsPage);
 714
 715     exportAction->setEnabled(false);
 716     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 717 }
 718
 719 void BitcoinGUI::gotoSignMessageTab(QString addr)
 720 {
 721     // call show() in showTab_SM()
 722     signVerifyMessageDialog->showTab_SM(true);
 723
 724     if(!addr.isEmpty())
 725         signVerifyMessageDialog->setAddress_SM(addr);
 726 }
 727
 728 void BitcoinGUI::gotoVerifyMessageTab(QString addr)
 729 {
 730     // call show() in showTab_VM()
 731     signVerifyMessageDialog->showTab_VM(true);
 732
 733     if(!addr.isEmpty())
 734         signVerifyMessageDialog->setAddress_VM(addr);
 735 }
 736
 737 void BitcoinGUI::dragEnterEvent(QDragEnterEvent *event)
 738 {
 739     // Accept only URIs
 740     if(event->mimeData()->hasUrls())
 741         event->acceptProposedAction();
 742 }
 743
 744 void BitcoinGUI::dropEvent(QDropEvent *event)
 745 {
 746     if(event->mimeData()->hasUrls())
 747     {
 748         int nValidUrisFound = 0;
 749         QList<QUrl> uris = event->mimeData()->urls();
 750         foreach(const QUrl &uri, uris)
 751         {
 752             if (sendCoinsPage->handleURI(uri.toString()))
 753                 nValidUrisFound++;
 754         }
 755
 756         // if valid URIs were found
 757         if (nValidUrisFound)
 758             gotoSendCoinsPage();
 759         else
 760             notificator->notify(Notificator::Warning, tr("URI handling"), tr("URI can not be parsed! This can be caused by an invalid NovaCoin address or malformed URI parameters."));
 761     }
 762
 763     event->acceptProposedAction();
 764 }
 765
 766 void BitcoinGUI::handleURI(QString strURI)
 767 {
 768     // URI has to be valid
 769     if (sendCoinsPage->handleURI(strURI))
 770     {
 771         showNormalIfMinimized();
 772         gotoSendCoinsPage();
 773     }
 774     else
 775         notificator->notify(Notificator::Warning, tr("URI handling"), tr("URI can not be parsed! This can be caused by an invalid NovaCoin address or malformed URI parameters."));
 776 }
 777
 778 void BitcoinGUI::setEncryptionStatus(int status)
 779 {
 780     switch(status)
 781     {
 782     case WalletModel::Unencrypted:
 783         labelEncryptionIcon->hide();
 784         encryptWalletAction->setChecked(false);
 785         changePassphraseAction->setEnabled(false);
 786         encryptWalletAction->setEnabled(true);
 787         break;
 788     case WalletModel::Unlocked:
 789         labelEncryptionIcon->show();
 790         labelEncryptionIcon->setPixmap(QIcon(":/icons/lock_open").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 791         labelEncryptionIcon->setToolTip(tr("Wallet is <b>encrypted</b> and currently <b>unlocked</b>"));
 792         encryptWalletAction->setChecked(true);
 793         changePassphraseAction->setEnabled(true);
 794         encryptWalletAction->setEnabled(false); // TODO: decrypt currently not supported
 795         break;
 796     case WalletModel::Locked:
 797         labelEncryptionIcon->show();
 798         labelEncryptionIcon->setPixmap(QIcon(":/icons/lock_closed").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 799         labelEncryptionIcon->setToolTip(tr("Wallet is <b>encrypted</b> and currently <b>locked</b>"));
 800         encryptWalletAction->setChecked(true);
 801         changePassphraseAction->setEnabled(true);
 802         encryptWalletAction->setEnabled(false); // TODO: decrypt currently not supported
 803         break;
 804     }
 805 }
 806
 807 void BitcoinGUI::encryptWallet(bool status)
 808 {
 809     if(!walletModel)
 810         return;
 811     AskPassphraseDialog dlg(status ? AskPassphraseDialog::Encrypt:
 812                                      AskPassphraseDialog::Decrypt, this);
 813     dlg.setModel(walletModel);
 814     dlg.exec();
 815
 816     setEncryptionStatus(walletModel->getEncryptionStatus());
 817 }
 818
 819 void BitcoinGUI::backupWallet()
 820 {
 821     QString saveDir = QDesktopServices::storageLocation(QDesktopServices::DocumentsLocation);
 822     QString filename = QFileDialog::getSaveFileName(this, tr("Backup Wallet"), saveDir, tr("Wallet Data (*.dat)"));
 823     if(!filename.isEmpty()) {
 824         if(!walletModel->backupWallet(filename)) {
 825             QMessageBox::warning(this, tr("Backup Failed"), tr("There was an error trying to save the wallet data to the new location."));
 826         }
 827     }
 828 }
 829
 830 void BitcoinGUI::changePassphrase()
 831 {
 832     AskPassphraseDialog dlg(AskPassphraseDialog::ChangePass, this);
 833     dlg.setModel(walletModel);
 834     dlg.exec();
 835 }
 836
 837 void BitcoinGUI::unlockWallet()
 838 {
 839     if(!walletModel)
 840         return;
 841     // Unlock wallet when requested by wallet model
 842     if(walletModel->getEncryptionStatus() == WalletModel::Locked)
 843     {
 844         AskPassphraseDialog dlg(AskPassphraseDialog::Unlock, this);
 845         dlg.setModel(walletModel);
 846         dlg.exec();
 847     }
 848 }
 849
 850 void BitcoinGUI::showNormalIfMinimized(bool fToggleHidden)
 851 {
 852     // activateWindow() (sometimes) helps with keyboard focus on Windows
 853     if (isHidden())
 854     {
 855         show();
 856         activateWindow();
 857     }
 858     else if (isMinimized())
 859     {
 860         showNormal();
 861         activateWindow();
 862     }
 863     else if (GUIUtil::isObscured(this))
 864     {
 865         raise();
 866         activateWindow();
 867     }
 868     else if(fToggleHidden)
 869         hide();
 870 }
 871
 872 void BitcoinGUI::toggleHidden()
 873 {
 874     showNormalIfMinimized(true);
 875 }