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