src/qt/bitcoingui.cpp

   1 /*
   2  * Qt4 bitcoin GUI.
   3  *
   4  * W.J. van der Laan 20011-2012
   5  * The Bitcoin Developers 20011-2012
   6  */
   7 #include "bitcoingui.h"
   8 #include "transactiontablemodel.h"
   9 #include "addressbookpage.h"
  10 #include "sendcoinsdialog.h"
  11 #include "messagepage.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
  27 #ifdef Q_WS_MAC
  28 #include "macdockiconhandler.h"
  29 #endif
  30
  31 #include <QApplication>
  32 #include <QMainWindow>
  33 #include <QMenuBar>
  34 #include <QMenu>
  35 #include <QIcon>
  36 #include <QTabWidget>
  37 #include <QVBoxLayout>
  38 #include <QToolBar>
  39 #include <QStatusBar>
  40 #include <QLabel>
  41 #include <QLineEdit>
  42 #include <QPushButton>
  43 #include <QLocale>
  44 #include <QMessageBox>
  45 #include <QProgressBar>
  46 #include <QStackedWidget>
  47 #include <QDateTime>
  48 #include <QMovie>
  49
  50 #include <QDragEnterEvent>
  51 #include <QUrl>
  52
  53 #include <iostream>
  54
  55 BitcoinGUI::BitcoinGUI(QWidget *parent):
  56     QMainWindow(parent),
  57     clientModel(0),
  58     walletModel(0),
  59     dummyWidget(0),
  60     encryptWalletAction(0),
  61     changePassphraseAction(0),
  62     aboutQtAction(0),
  63     trayIcon(0),
  64     notificator(0)
  65 {
  66     resize(850, 550);
  67     setWindowTitle(tr("Bitcoin Wallet"));
  68 #ifndef Q_WS_MAC
  69     setWindowIcon(QIcon(":icons/bitcoin"));
  70 #else
  71     setUnifiedTitleAndToolBarOnMac(true);
  72     QApplication::setAttribute(Qt::AA_DontShowIconsInMenus);
  73 #endif
  74     // Accept D&D of URIs
  75     setAcceptDrops(true);
  76
  77     // Create actions for the toolbar, menu bar and tray/dock icon
  78     createActions();
  79
  80     // Create application menu bar
  81     createMenuBar();
  82
  83     // Create the toolbars
  84     createToolBars();
  85
  86     // Create the tray icon (or setup the dock icon)
  87     createTrayIcon();
  88
  89     // Dummy widget used when restoring window state after minimization
  90     dummyWidget = new QWidget();
  91
  92     // Create tabs
  93     overviewPage = new OverviewPage();
  94
  95     transactionsPage = new QWidget(this);
  96     QVBoxLayout *vbox = new QVBoxLayout();
  97     transactionView = new TransactionView(this);
  98     vbox->addWidget(transactionView);
  99     transactionsPage->setLayout(vbox);
 100
 101     addressBookPage = new AddressBookPage(AddressBookPage::ForEditing, AddressBookPage::SendingTab);
 102
 103     receiveCoinsPage = new AddressBookPage(AddressBookPage::ForEditing, AddressBookPage::ReceivingTab);
 104
 105     sendCoinsPage = new SendCoinsDialog(this);
 106
 107     messagePage = new MessagePage(this);
 108
 109     centralWidget = new QStackedWidget(this);
 110     centralWidget->addWidget(overviewPage);
 111     centralWidget->addWidget(transactionsPage);
 112     centralWidget->addWidget(addressBookPage);
 113     centralWidget->addWidget(receiveCoinsPage);
 114     centralWidget->addWidget(sendCoinsPage);
 115 #ifdef FIRST_CLASS_MESSAGING
 116     centralWidget->addWidget(messagePage);
 117 #endif
 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 for blocks download
 143     progressBarLabel = new QLabel(tr("Synchronizing with network..."));
 144     progressBarLabel->setVisible(false);
 145     progressBar = new QProgressBar();
 146     progressBar->setToolTip(tr("Block chain synchronization in progress"));
 147     progressBar->setVisible(false);
 148
 149     statusBar()->addWidget(progressBarLabel);
 150     statusBar()->addWidget(progressBar);
 151     statusBar()->addPermanentWidget(frameBlocks);
 152
 153     syncIconMovie = new QMovie(":/movies/update_spinner", "mng", this);
 154
 155     // Clicking on a transaction on the overview page simply sends you to transaction history page
 156     connect(overviewPage, SIGNAL(transactionClicked(QModelIndex)), this, SLOT(gotoHistoryPage()));
 157
 158     // Doubleclicking on a transaction on the transaction history page shows details
 159     connect(transactionView, SIGNAL(doubleClicked(QModelIndex)), transactionView, SLOT(showDetails()));
 160
 161     gotoOverviewPage();
 162 }
 163
 164 BitcoinGUI::~BitcoinGUI()
 165 {
 166 #ifdef Q_WS_MAC
 167     delete appMenuBar;
 168 #endif
 169     delete dummyWidget;
 170 }
 171
 172 void BitcoinGUI::createActions()
 173 {
 174     QActionGroup *tabGroup = new QActionGroup(this);
 175
 176     overviewAction = new QAction(QIcon(":/icons/overview"), tr("&Overview"), this);
 177     overviewAction->setToolTip(tr("Show general overview of wallet"));
 178     overviewAction->setCheckable(true);
 179     overviewAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_1));
 180     tabGroup->addAction(overviewAction);
 181
 182     historyAction = new QAction(QIcon(":/icons/history"), tr("&Transactions"), this);
 183     historyAction->setToolTip(tr("Browse transaction history"));
 184     historyAction->setCheckable(true);
 185     historyAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_4));
 186     tabGroup->addAction(historyAction);
 187
 188     addressBookAction = new QAction(QIcon(":/icons/address-book"), tr("&Address Book"), this);
 189     addressBookAction->setToolTip(tr("Edit the list of stored addresses and labels"));
 190     addressBookAction->setCheckable(true);
 191     addressBookAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_5));
 192     tabGroup->addAction(addressBookAction);
 193
 194     receiveCoinsAction = new QAction(QIcon(":/icons/receiving_addresses"), tr("&Receive coins"), this);
 195     receiveCoinsAction->setToolTip(tr("Show the list of addresses for receiving payments"));
 196     receiveCoinsAction->setCheckable(true);
 197     receiveCoinsAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_3));
 198     tabGroup->addAction(receiveCoinsAction);
 199
 200     sendCoinsAction = new QAction(QIcon(":/icons/send"), tr("&Send coins"), this);
 201     sendCoinsAction->setToolTip(tr("Send coins to a bitcoin address"));
 202     sendCoinsAction->setCheckable(true);
 203     sendCoinsAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_2));
 204     tabGroup->addAction(sendCoinsAction);
 205
 206     messageAction = new QAction(QIcon(":/icons/edit"), tr("Sign &message"), this);
 207     messageAction->setToolTip(tr("Prove you control an address"));
 208 #ifdef FIRST_CLASS_MESSAGING
 209     messageAction->setCheckable(true);
 210 #endif
 211     tabGroup->addAction(messageAction);
 212
 213     connect(overviewAction, SIGNAL(triggered()), this, SLOT(showNormal()));
 214     connect(overviewAction, SIGNAL(triggered()), this, SLOT(gotoOverviewPage()));
 215     connect(historyAction, SIGNAL(triggered()), this, SLOT(showNormal()));
 216     connect(historyAction, SIGNAL(triggered()), this, SLOT(gotoHistoryPage()));
 217     connect(addressBookAction, SIGNAL(triggered()), this, SLOT(showNormal()));
 218     connect(addressBookAction, SIGNAL(triggered()), this, SLOT(gotoAddressBookPage()));
 219     connect(receiveCoinsAction, SIGNAL(triggered()), this, SLOT(showNormal()));
 220     connect(receiveCoinsAction, SIGNAL(triggered()), this, SLOT(gotoReceiveCoinsPage()));
 221     connect(sendCoinsAction, SIGNAL(triggered()), this, SLOT(showNormal()));
 222     connect(sendCoinsAction, SIGNAL(triggered()), this, SLOT(gotoSendCoinsPage()));
 223     connect(messageAction, SIGNAL(triggered()), this, SLOT(showNormal()));
 224     connect(messageAction, SIGNAL(triggered()), this, SLOT(gotoMessagePage()));
 225
 226     quitAction = new QAction(QIcon(":/icons/quit"), tr("E&xit"), this);
 227     quitAction->setToolTip(tr("Quit application"));
 228     quitAction->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q));
 229     quitAction->setMenuRole(QAction::QuitRole);
 230     aboutAction = new QAction(QIcon(":/icons/bitcoin"), tr("&About %1").arg(qApp->applicationName()), this);
 231     aboutAction->setToolTip(tr("Show information about Bitcoin"));
 232     aboutAction->setMenuRole(QAction::AboutRole);
 233     aboutQtAction = new QAction(tr("About &Qt"), this);
 234     aboutQtAction->setToolTip(tr("Show information about Qt"));
 235     aboutQtAction->setMenuRole(QAction::AboutQtRole);
 236     optionsAction = new QAction(QIcon(":/icons/options"), tr("&Options..."), this);
 237     optionsAction->setToolTip(tr("Modify configuration options for bitcoin"));
 238     optionsAction->setMenuRole(QAction::PreferencesRole);
 239     openBitcoinAction = new QAction(QIcon(":/icons/bitcoin"), tr("Open &Bitcoin"), this);
 240     openBitcoinAction->setToolTip(tr("Show the Bitcoin window"));
 241     exportAction = new QAction(QIcon(":/icons/export"), tr("&Export..."), this);
 242     exportAction->setToolTip(tr("Export the data in the current tab to a file"));
 243     encryptWalletAction = new QAction(QIcon(":/icons/lock_closed"), tr("&Encrypt Wallet"), this);
 244     encryptWalletAction->setToolTip(tr("Encrypt or decrypt wallet"));
 245     encryptWalletAction->setCheckable(true);
 246     changePassphraseAction = new QAction(QIcon(":/icons/key"), tr("&Change Passphrase"), this);
 247     changePassphraseAction->setToolTip(tr("Change the passphrase used for wallet encryption"));
 248
 249     connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
 250     connect(optionsAction, SIGNAL(triggered()), this, SLOT(optionsClicked()));
 251     connect(aboutAction, SIGNAL(triggered()), this, SLOT(aboutClicked()));
 252     connect(aboutQtAction, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
 253     connect(openBitcoinAction, SIGNAL(triggered()), this, SLOT(showNormal()));
 254     connect(encryptWalletAction, SIGNAL(triggered(bool)), this, SLOT(encryptWallet(bool)));
 255     connect(changePassphraseAction, SIGNAL(triggered()), this, SLOT(changePassphrase()));
 256 }
 257
 258 void BitcoinGUI::createMenuBar()
 259 {
 260 #ifdef Q_WS_MAC
 261     // Create a decoupled menu bar on Mac which stays even if the window is closed
 262     appMenuBar = new QMenuBar();
 263 #else
 264     // Get the main window's menu bar on other platforms
 265     appMenuBar = menuBar();
 266 #endif
 267
 268     // Configure the menus
 269     QMenu *file = appMenuBar->addMenu(tr("&File"));
 270     file->addAction(exportAction);
 271 #ifndef FIRST_CLASS_MESSAGING
 272     file->addAction(messageAction);
 273     file->addSeparator();
 274 #endif
 275     file->addAction(quitAction);
 276
 277     QMenu *settings = appMenuBar->addMenu(tr("&Settings"));
 278     settings->addAction(encryptWalletAction);
 279     settings->addAction(changePassphraseAction);
 280     settings->addSeparator();
 281     settings->addAction(optionsAction);
 282
 283     QMenu *help = appMenuBar->addMenu(tr("&Help"));
 284     help->addAction(aboutAction);
 285     help->addAction(aboutQtAction);
 286 }
 287
 288 void BitcoinGUI::createToolBars()
 289 {
 290     QToolBar *toolbar = addToolBar(tr("Tabs toolbar"));
 291     toolbar->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 292     toolbar->addAction(overviewAction);
 293     toolbar->addAction(sendCoinsAction);
 294     toolbar->addAction(receiveCoinsAction);
 295     toolbar->addAction(historyAction);
 296     toolbar->addAction(addressBookAction);
 297 #ifdef FIRST_CLASS_MESSAGING
 298     toolbar->addAction(messageAction);
 299 #endif
 300
 301     QToolBar *toolbar2 = addToolBar(tr("Actions toolbar"));
 302     toolbar2->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 303     toolbar2->addAction(exportAction);
 304 }
 305
 306 void BitcoinGUI::setClientModel(ClientModel *clientModel)
 307 {
 308     this->clientModel = clientModel;
 309     if(clientModel)
 310     {
 311         if(clientModel->isTestNet())
 312         {
 313             QString title_testnet = windowTitle() + QString(" ") + tr("[testnet]");
 314             setWindowTitle(title_testnet);
 315 #ifndef Q_WS_MAC
 316             setWindowIcon(QIcon(":icons/bitcoin_testnet"));
 317 #else
 318             MacDockIconHandler::instance()->setIcon(QIcon(":icons/bitcoin_testnet"));
 319 #endif
 320             if(trayIcon)
 321             {
 322                 trayIcon->setToolTip(title_testnet);
 323                 trayIcon->setIcon(QIcon(":/icons/toolbar_testnet"));
 324             }
 325         }
 326
 327         // Keep up to date with client
 328         setNumConnections(clientModel->getNumConnections());
 329         connect(clientModel, SIGNAL(numConnectionsChanged(int)), this, SLOT(setNumConnections(int)));
 330
 331         setNumBlocks(clientModel->getNumBlocks());
 332         connect(clientModel, SIGNAL(numBlocksChanged(int)), this, SLOT(setNumBlocks(int)));
 333
 334         // Report errors from network/worker thread
 335         connect(clientModel, SIGNAL(error(QString,QString)), this, SLOT(error(QString,QString)));
 336     }
 337 }
 338
 339 void BitcoinGUI::setWalletModel(WalletModel *walletModel)
 340 {
 341     this->walletModel = walletModel;
 342     if(walletModel)
 343     {
 344         // Report errors from wallet thread
 345         connect(walletModel, SIGNAL(error(QString,QString)), this, SLOT(error(QString,QString)));
 346
 347         // Put transaction list in tabs
 348         transactionView->setModel(walletModel);
 349
 350         overviewPage->setModel(walletModel);
 351         addressBookPage->setModel(walletModel->getAddressTableModel());
 352         receiveCoinsPage->setModel(walletModel->getAddressTableModel());
 353         sendCoinsPage->setModel(walletModel);
 354         messagePage->setModel(walletModel);
 355
 356         setEncryptionStatus(walletModel->getEncryptionStatus());
 357         connect(walletModel, SIGNAL(encryptionStatusChanged(int)), this, SLOT(setEncryptionStatus(int)));
 358
 359         // Balloon popup for new transaction
 360         connect(walletModel->getTransactionTableModel(), SIGNAL(rowsInserted(QModelIndex,int,int)),
 361                 this, SLOT(incomingTransaction(QModelIndex,int,int)));
 362
 363         // Ask for passphrase if needed
 364         connect(walletModel, SIGNAL(requireUnlock()), this, SLOT(unlockWallet()));
 365     }
 366 }
 367
 368 void BitcoinGUI::createTrayIcon()
 369 {
 370     QMenu *trayIconMenu;
 371 #ifndef Q_WS_MAC
 372     trayIcon = new QSystemTrayIcon(this);
 373     trayIconMenu = new QMenu(this);
 374     trayIcon->setContextMenu(trayIconMenu);
 375     trayIcon->setToolTip("Bitcoin client");
 376     trayIcon->setIcon(QIcon(":/icons/toolbar"));
 377     connect(trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
 378             this, SLOT(trayIconActivated(QSystemTrayIcon::ActivationReason)));
 379     trayIcon->show();
 380 #else
 381     // Note: On Mac, the dock icon is used to provide the tray's functionality.
 382     MacDockIconHandler *dockIconHandler = MacDockIconHandler::instance();
 383     connect(dockIconHandler, SIGNAL(dockIconClicked()), openBitcoinAction, SLOT(trigger()));
 384     trayIconMenu = dockIconHandler->dockMenu();
 385 #endif
 386
 387     // Configuration of the tray icon (or dock icon) icon menu
 388     trayIconMenu->addAction(openBitcoinAction);
 389     trayIconMenu->addSeparator();
 390     trayIconMenu->addAction(messageAction);
 391 #ifndef FIRST_CLASS_MESSAGING
 392     trayIconMenu->addSeparator();
 393 #endif
 394     trayIconMenu->addAction(receiveCoinsAction);
 395     trayIconMenu->addAction(sendCoinsAction);
 396     trayIconMenu->addSeparator();
 397     trayIconMenu->addAction(optionsAction);
 398 #ifndef Q_WS_MAC // This is built-in on Mac
 399     trayIconMenu->addSeparator();
 400     trayIconMenu->addAction(quitAction);
 401 #endif
 402
 403     notificator = new Notificator(tr("bitcoin-qt"), trayIcon);
 404 }
 405
 406 #ifndef Q_WS_MAC
 407 void BitcoinGUI::trayIconActivated(QSystemTrayIcon::ActivationReason reason)
 408 {
 409     if(reason == QSystemTrayIcon::Trigger)
 410     {
 411         // Click on system tray icon triggers "open bitcoin"
 412         openBitcoinAction->trigger();
 413     }
 414 }
 415 #endif
 416
 417 void BitcoinGUI::showNormal()
 418 {
 419     // Reparent window to the desktop (in case it was hidden on minimize)
 420     if(parent() != NULL)
 421         setParent(NULL, Qt::Window);
 422     QMainWindow::showNormal();
 423 }
 424
 425 void BitcoinGUI::optionsClicked()
 426 {
 427     if(!clientModel || !clientModel->getOptionsModel())
 428         return;
 429     OptionsDialog dlg;
 430     dlg.setModel(clientModel->getOptionsModel());
 431     dlg.exec();
 432 }
 433
 434 void BitcoinGUI::aboutClicked()
 435 {
 436     AboutDialog dlg;
 437     dlg.setModel(clientModel);
 438     dlg.exec();
 439 }
 440
 441 void BitcoinGUI::setNumConnections(int count)
 442 {
 443     QString icon;
 444     switch(count)
 445     {
 446     case 0: icon = ":/icons/connect_0"; break;
 447     case 1: case 2: case 3: icon = ":/icons/connect_1"; break;
 448     case 4: case 5: case 6: icon = ":/icons/connect_2"; break;
 449     case 7: case 8: case 9: icon = ":/icons/connect_3"; break;
 450     default: icon = ":/icons/connect_4"; break;
 451     }
 452     labelConnectionsIcon->setPixmap(QIcon(icon).pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 453     labelConnectionsIcon->setToolTip(tr("%n active connection(s) to Bitcoin network", "", count));
 454 }
 455
 456 void BitcoinGUI::setNumBlocks(int count)
 457 {
 458     if(!clientModel)
 459         return;
 460     int total = clientModel->getNumBlocksOfPeers();
 461     QString tooltip;
 462
 463     if(count < total)
 464     {
 465         if (clientModel->getStatusBarWarnings() == "")
 466         {
 467             progressBarLabel->setVisible(true);
 468             progressBarLabel->setText(tr("Synchronizing with network..."));
 469             progressBar->setVisible(true);
 470             progressBar->setMaximum(total);
 471             progressBar->setValue(count);
 472         }
 473         else
 474         {
 475             progressBarLabel->setText(clientModel->getStatusBarWarnings());
 476             progressBarLabel->setVisible(true);
 477             progressBar->setVisible(false);
 478         }
 479         tooltip = tr("Downloaded %1 of %2 blocks of transaction history.").arg(count).arg(total);
 480     }
 481     else
 482     {
 483         if (clientModel->getStatusBarWarnings() == "")
 484             progressBarLabel->setVisible(false);
 485         else
 486         {
 487             progressBarLabel->setText(clientModel->getStatusBarWarnings());
 488             progressBarLabel->setVisible(true);
 489         }
 490         progressBar->setVisible(false);
 491         tooltip = tr("Downloaded %1 blocks of transaction history.").arg(count);
 492     }
 493
 494     QDateTime now = QDateTime::currentDateTime();
 495     QDateTime lastBlockDate = clientModel->getLastBlockDate();
 496     int secs = lastBlockDate.secsTo(now);
 497     QString text;
 498
 499     // Represent time from last generated block in human readable text
 500     if(secs < 60)
 501     {
 502         text = tr("%n second(s) ago","",secs);
 503     }
 504     else if(secs < 60*60)
 505     {
 506         text = tr("%n minute(s) ago","",secs/60);
 507     }
 508     else if(secs < 24*60*60)
 509     {
 510         text = tr("%n hour(s) ago","",secs/(60*60));
 511     }
 512     else
 513     {
 514         text = tr("%n day(s) ago","",secs/(60*60*24));
 515     }
 516
 517     // Set icon state: spinning if catching up, tick otherwise
 518     if(secs < 30*60)
 519     {
 520         tooltip = tr("Up to date") + QString("\n") + tooltip;
 521         labelBlocksIcon->setPixmap(QIcon(":/icons/synced").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 522     }
 523     else
 524     {
 525         tooltip = tr("Catching up...") + QString("\n") + tooltip;
 526         labelBlocksIcon->setMovie(syncIconMovie);
 527         syncIconMovie->start();
 528     }
 529
 530     tooltip += QString("\n");
 531     tooltip += tr("Last received block was generated %1.").arg(text);
 532
 533     labelBlocksIcon->setToolTip(tooltip);
 534     progressBarLabel->setToolTip(tooltip);
 535     progressBar->setToolTip(tooltip);
 536 }
 537
 538 void BitcoinGUI::refreshStatusBar()
 539 {
 540     /* Might display multiple times in the case of multiple alerts
 541     static QString prevStatusBar;
 542     QString newStatusBar = clientModel->getStatusBarWarnings();
 543     if (prevStatusBar != newStatusBar)
 544     {
 545         prevStatusBar = newStatusBar;
 546         error(tr("Network Alert"), newStatusBar);
 547     }*/
 548     setNumBlocks(clientModel->getNumBlocks());
 549 }
 550
 551 void BitcoinGUI::error(const QString &title, const QString &message)
 552 {
 553     // Report errors from network/worker thread
 554     notificator->notify(Notificator::Critical, title, message);
 555 }
 556
 557 void BitcoinGUI::changeEvent(QEvent *e)
 558 {
 559 #ifndef Q_WS_MAC // Ignored on Mac
 560     if(e->type() == QEvent::WindowStateChange)
 561     {
 562         if(clientModel && clientModel->getOptionsModel()->getMinimizeToTray())
 563         {
 564             if(isMinimized())
 565             {
 566                 // Hiding the window from taskbar
 567                 setParent(dummyWidget, Qt::SubWindow);
 568                 return;
 569             }
 570             else
 571             {
 572                 showNormal();
 573             }
 574         }
 575     }
 576 #endif
 577     QMainWindow::changeEvent(e);
 578 }
 579
 580 void BitcoinGUI::closeEvent(QCloseEvent *event)
 581 {
 582     if(clientModel)
 583     {
 584 #ifndef Q_WS_MAC // Ignored on Mac
 585         if(!clientModel->getOptionsModel()->getMinimizeToTray() &&
 586            !clientModel->getOptionsModel()->getMinimizeOnClose())
 587         {
 588             qApp->quit();
 589         }
 590 #endif
 591     }
 592     QMainWindow::closeEvent(event);
 593 }
 594
 595 void BitcoinGUI::askFee(qint64 nFeeRequired, bool *payFee)
 596 {
 597     QString strMessage =
 598         tr("This transaction is over the size limit.  You can still send it for a fee of %1, "
 599           "which goes to the nodes that process your transaction and helps to support the network.  "
 600           "Do you want to pay the fee?").arg(
 601                 BitcoinUnits::formatWithUnit(BitcoinUnits::BTC, nFeeRequired));
 602     QMessageBox::StandardButton retval = QMessageBox::question(
 603           this, tr("Sending..."), strMessage,
 604           QMessageBox::Yes|QMessageBox::Cancel, QMessageBox::Yes);
 605     *payFee = (retval == QMessageBox::Yes);
 606 }
 607
 608 void BitcoinGUI::incomingTransaction(const QModelIndex & parent, int start, int end)
 609 {
 610     if(!walletModel || !clientModel)
 611         return;
 612     TransactionTableModel *ttm = walletModel->getTransactionTableModel();
 613     qint64 amount = ttm->index(start, TransactionTableModel::Amount, parent)
 614                     .data(Qt::EditRole).toULongLong();
 615     if(!clientModel->inInitialBlockDownload())
 616     {
 617         // On new transaction, make an info balloon
 618         // Unless the initial block download is in progress, to prevent balloon-spam
 619         QString date = ttm->index(start, TransactionTableModel::Date, parent)
 620                         .data().toString();
 621         QString type = ttm->index(start, TransactionTableModel::Type, parent)
 622                         .data().toString();
 623         QString address = ttm->index(start, TransactionTableModel::ToAddress, parent)
 624                         .data().toString();
 625         QIcon icon = qvariant_cast<QIcon>(ttm->index(start,
 626                             TransactionTableModel::ToAddress, parent)
 627                         .data(Qt::DecorationRole));
 628
 629         notificator->notify(Notificator::Information,
 630                             (amount)<0 ? tr("Sent transaction") :
 631                                          tr("Incoming transaction"),
 632                               tr("Date: %1\n"
 633                                  "Amount: %2\n"
 634                                  "Type: %3\n"
 635                                  "Address: %4\n")
 636                               .arg(date)
 637                               .arg(BitcoinUnits::formatWithUnit(walletModel->getOptionsModel()->getDisplayUnit(), amount, true))
 638                               .arg(type)
 639                               .arg(address), icon);
 640     }
 641 }
 642
 643 void BitcoinGUI::gotoOverviewPage()
 644 {
 645     overviewAction->setChecked(true);
 646     centralWidget->setCurrentWidget(overviewPage);
 647
 648     exportAction->setEnabled(false);
 649     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 650 }
 651
 652 void BitcoinGUI::gotoHistoryPage()
 653 {
 654     historyAction->setChecked(true);
 655     centralWidget->setCurrentWidget(transactionsPage);
 656
 657     exportAction->setEnabled(true);
 658     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 659     connect(exportAction, SIGNAL(triggered()), transactionView, SLOT(exportClicked()));
 660 }
 661
 662 void BitcoinGUI::gotoAddressBookPage()
 663 {
 664     addressBookAction->setChecked(true);
 665     centralWidget->setCurrentWidget(addressBookPage);
 666
 667     exportAction->setEnabled(true);
 668     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 669     connect(exportAction, SIGNAL(triggered()), addressBookPage, SLOT(exportClicked()));
 670 }
 671
 672 void BitcoinGUI::gotoReceiveCoinsPage()
 673 {
 674     receiveCoinsAction->setChecked(true);
 675     centralWidget->setCurrentWidget(receiveCoinsPage);
 676
 677     exportAction->setEnabled(true);
 678     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 679     connect(exportAction, SIGNAL(triggered()), receiveCoinsPage, SLOT(exportClicked()));
 680 }
 681
 682 void BitcoinGUI::gotoSendCoinsPage()
 683 {
 684     sendCoinsAction->setChecked(true);
 685     centralWidget->setCurrentWidget(sendCoinsPage);
 686
 687     exportAction->setEnabled(false);
 688     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 689 }
 690
 691 void BitcoinGUI::gotoMessagePage()
 692 {
 693 #ifdef FIRST_CLASS_MESSAGING
 694     messageAction->setChecked(true);
 695     centralWidget->setCurrentWidget(messagePage);
 696
 697     exportAction->setEnabled(false);
 698     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 699 #else
 700     messagePage->show();
 701     messagePage->setFocus();
 702 #endif
 703 }
 704
 705 void BitcoinGUI::gotoMessagePage(QString addr)
 706 {
 707     gotoMessagePage();
 708     messagePage->setAddress(addr);
 709 }
 710
 711 void BitcoinGUI::dragEnterEvent(QDragEnterEvent *event)
 712 {
 713     // Accept only URLs
 714     if(event->mimeData()->hasUrls())
 715         event->acceptProposedAction();
 716 }
 717
 718 void BitcoinGUI::dropEvent(QDropEvent *event)
 719 {
 720     if(event->mimeData()->hasUrls())
 721     {
 722         gotoSendCoinsPage();
 723         QList<QUrl> urls = event->mimeData()->urls();
 724         foreach(const QUrl &url, urls)
 725         {
 726             sendCoinsPage->handleURL(url.toString());
 727         }
 728     }
 729
 730     event->acceptProposedAction();
 731 }
 732
 733 void BitcoinGUI::handleURL(QString strURL)
 734 {
 735     gotoSendCoinsPage();
 736     sendCoinsPage->handleURL(strURL);
 737 }
 738
 739 void BitcoinGUI::setEncryptionStatus(int status)
 740 {
 741     switch(status)
 742     {
 743     case WalletModel::Unencrypted:
 744         labelEncryptionIcon->hide();
 745         encryptWalletAction->setChecked(false);
 746         changePassphraseAction->setEnabled(false);
 747         encryptWalletAction->setEnabled(true);
 748         break;
 749     case WalletModel::Unlocked:
 750         labelEncryptionIcon->show();
 751         labelEncryptionIcon->setPixmap(QIcon(":/icons/lock_open").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 752         labelEncryptionIcon->setToolTip(tr("Wallet is <b>encrypted</b> and currently <b>unlocked</b>"));
 753         encryptWalletAction->setChecked(true);
 754         changePassphraseAction->setEnabled(true);
 755         encryptWalletAction->setEnabled(false); // TODO: decrypt currently not supported
 756         break;
 757     case WalletModel::Locked:
 758         labelEncryptionIcon->show();
 759         labelEncryptionIcon->setPixmap(QIcon(":/icons/lock_closed").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 760         labelEncryptionIcon->setToolTip(tr("Wallet is <b>encrypted</b> and currently <b>locked</b>"));
 761         encryptWalletAction->setChecked(true);
 762         changePassphraseAction->setEnabled(true);
 763         encryptWalletAction->setEnabled(false); // TODO: decrypt currently not supported
 764         break;
 765     }
 766 }
 767
 768 void BitcoinGUI::encryptWallet(bool status)
 769 {
 770     if(!walletModel)
 771         return;
 772     AskPassphraseDialog dlg(status ? AskPassphraseDialog::Encrypt:
 773                                      AskPassphraseDialog::Decrypt, this);
 774     dlg.setModel(walletModel);
 775     dlg.exec();
 776
 777     setEncryptionStatus(walletModel->getEncryptionStatus());
 778 }
 779
 780 void BitcoinGUI::changePassphrase()
 781 {
 782     AskPassphraseDialog dlg(AskPassphraseDialog::ChangePass, this);
 783     dlg.setModel(walletModel);
 784     dlg.exec();
 785 }
 786
 787 void BitcoinGUI::unlockWallet()
 788 {
 789     if(!walletModel)
 790         return;
 791     // Unlock wallet when requested by wallet model
 792     if(walletModel->getEncryptionStatus() == WalletModel::Locked)
 793     {
 794         AskPassphraseDialog dlg(AskPassphraseDialog::Unlock, this);
 795         dlg.setModel(walletModel);
 796         dlg.exec();
 797     }
 798 }