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 "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 #include "guiutil.h"
  27
  28 #ifdef Q_WS_MAC
  29 #include "macdockiconhandler.h"
  30 #endif
  31
  32 #include <QApplication>
  33 #include <QMainWindow>
  34 #include <QMenuBar>
  35 #include <QMenu>
  36 #include <QIcon>
  37 #include <QTabWidget>
  38 #include <QVBoxLayout>
  39 #include <QToolBar>
  40 #include <QStatusBar>
  41 #include <QLabel>
  42 #include <QLineEdit>
  43 #include <QPushButton>
  44 #include <QLocale>
  45 #include <QMessageBox>
  46 #include <QProgressBar>
  47 #include <QStackedWidget>
  48 #include <QDateTime>
  49 #include <QMovie>
  50 #include <QFileDialog>
  51 #include <QDesktopServices>
  52 #include <QTimer>
  53
  54 #include <QDragEnterEvent>
  55 #include <QUrl>
  56
  57 #include <iostream>
  58
  59 BitcoinGUI::BitcoinGUI(QWidget *parent):
  60     QMainWindow(parent),
  61     clientModel(0),
  62     walletModel(0),
  63     encryptWalletAction(0),
  64     changePassphraseAction(0),
  65     aboutQtAction(0),
  66     trayIcon(0),
  67     notificator(0)
  68 {
  69     resize(850, 550);
  70     setWindowTitle(tr("Bitcoin Wallet"));
  71 #ifndef Q_WS_MAC
  72     setWindowIcon(QIcon(":icons/bitcoin"));
  73 #else
  74     setUnifiedTitleAndToolBarOnMac(true);
  75     QApplication::setAttribute(Qt::AA_DontShowIconsInMenus);
  76 #endif
  77     // Accept D&D of URIs
  78     setAcceptDrops(true);
  79
  80     // Create actions for the toolbar, menu bar and tray/dock icon
  81     createActions();
  82
  83     // Create application menu bar
  84     createMenuBar();
  85
  86     // Create the toolbars
  87     createToolBars();
  88
  89     // Create the tray icon (or setup the dock icon)
  90     createTrayIcon();
  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 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     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 }
 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     toggleHideAction = new QAction(QIcon(":/icons/bitcoin"), tr("Show/Hide &Bitcoin"), this);
 239     toggleHideAction->setToolTip(tr("Show or hide 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(toggleHideAction, SIGNAL(triggered()), this, SLOT(toggleHidden()));
 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, bool)), this, SLOT(error(QString,QString,bool)));
 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,bool)), this, SLOT(error(QString,QString,bool)));
 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(tr("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     trayIconMenu = dockIconHandler->dockMenu();
 387 #endif
 388
 389     // Configuration of the tray icon (or dock icon) icon menu
 390     trayIconMenu->addAction(toggleHideAction);
 391     trayIconMenu->addSeparator();
 392     trayIconMenu->addAction(messageAction);
 393 #ifndef FIRST_CLASS_MESSAGING
 394     trayIconMenu->addSeparator();
 395 #endif
 396     trayIconMenu->addAction(receiveCoinsAction);
 397     trayIconMenu->addAction(sendCoinsAction);
 398     trayIconMenu->addSeparator();
 399     trayIconMenu->addAction(optionsAction);
 400 #ifndef Q_WS_MAC // This is built-in on Mac
 401     trayIconMenu->addSeparator();
 402     trayIconMenu->addAction(quitAction);
 403 #endif
 404
 405     notificator = new Notificator(tr("bitcoin-qt"), trayIcon);
 406 }
 407
 408 #ifndef Q_WS_MAC
 409 void BitcoinGUI::trayIconActivated(QSystemTrayIcon::ActivationReason reason)
 410 {
 411     if(reason == QSystemTrayIcon::Trigger)
 412     {
 413         // Click on system tray icon triggers "show/hide bitcoin"
 414         toggleHideAction->trigger();
 415     }
 416 }
 417 #endif
 418
 419 void BitcoinGUI::toggleHidden()
 420 {
 421     // activateWindow() (sometimes) helps with keyboard focus on Windows
 422     if (isHidden())
 423     {
 424         show();
 425         activateWindow();
 426     }
 427     else if (isMinimized())
 428     {
 429         showNormal();
 430         activateWindow();
 431     }
 432     else if (GUIUtil::isObscured(this))
 433     {
 434         raise();
 435         activateWindow();
 436     }
 437     else
 438         hide();
 439 }
 440
 441 void BitcoinGUI::optionsClicked()
 442 {
 443     if(!clientModel || !clientModel->getOptionsModel())
 444         return;
 445     OptionsDialog dlg;
 446     dlg.setModel(clientModel->getOptionsModel());
 447     dlg.exec();
 448 }
 449
 450 void BitcoinGUI::aboutClicked()
 451 {
 452     AboutDialog dlg;
 453     dlg.setModel(clientModel);
 454     dlg.exec();
 455 }
 456
 457 void BitcoinGUI::setNumConnections(int count)
 458 {
 459     QString icon;
 460     switch(count)
 461     {
 462     case 0: icon = ":/icons/connect_0"; break;
 463     case 1: case 2: case 3: icon = ":/icons/connect_1"; break;
 464     case 4: case 5: case 6: icon = ":/icons/connect_2"; break;
 465     case 7: case 8: case 9: icon = ":/icons/connect_3"; break;
 466     default: icon = ":/icons/connect_4"; break;
 467     }
 468     labelConnectionsIcon->setPixmap(QIcon(icon).pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 469     labelConnectionsIcon->setToolTip(tr("%n active connection(s) to Bitcoin network", "", count));
 470 }
 471
 472 void BitcoinGUI::setNumBlocks(int count)
 473 {
 474     // don't show / hide progressBar and it's label if we have no connection(s) to the network
 475     if (!clientModel || clientModel->getNumConnections() == 0)
 476     {
 477         progressBarLabel->setVisible(false);
 478         progressBar->setVisible(false);
 479
 480         return;
 481     }
 482
 483     int nTotalBlocks = clientModel->getNumBlocksOfPeers();
 484     QString tooltip;
 485
 486     if(count < nTotalBlocks)
 487     {
 488         int nRemainingBlocks = nTotalBlocks - count;
 489         float nPercentageDone = count / (nTotalBlocks * 0.01f);
 490
 491         if (clientModel->getStatusBarWarnings() == "")
 492         {
 493             progressBarLabel->setText(tr("Synchronizing with network..."));
 494             progressBarLabel->setVisible(true);
 495             progressBar->setFormat(tr("~%n block(s) remaining", "", nRemainingBlocks));
 496             progressBar->setMaximum(nTotalBlocks);
 497             progressBar->setValue(count);
 498             progressBar->setVisible(true);
 499         }
 500         else
 501         {
 502             progressBarLabel->setText(clientModel->getStatusBarWarnings());
 503             progressBarLabel->setVisible(true);
 504             progressBar->setVisible(false);
 505         }
 506         tooltip = tr("Downloaded %1 of %2 blocks of transaction history (%3% done).").arg(count).arg(nTotalBlocks).arg(nPercentageDone, 0, 'f', 2);
 507     }
 508     else
 509     {
 510         if (clientModel->getStatusBarWarnings() == "")
 511             progressBarLabel->setVisible(false);
 512         else
 513         {
 514             progressBarLabel->setText(clientModel->getStatusBarWarnings());
 515             progressBarLabel->setVisible(true);
 516         }
 517         progressBar->setVisible(false);
 518         tooltip = tr("Downloaded %1 blocks of transaction history.").arg(count);
 519     }
 520
 521     QDateTime now = QDateTime::currentDateTime();
 522     QDateTime lastBlockDate = clientModel->getLastBlockDate();
 523     int secs = lastBlockDate.secsTo(now);
 524     QString text;
 525
 526     // Represent time from last generated block in human readable text
 527     if(secs <= 0)
 528     {
 529         // Fully up to date. Leave text empty.
 530     }
 531     else if(secs < 60)
 532     {
 533         text = tr("%n second(s) ago","",secs);
 534     }
 535     else if(secs < 60*60)
 536     {
 537         text = tr("%n minute(s) ago","",secs/60);
 538     }
 539     else if(secs < 24*60*60)
 540     {
 541         text = tr("%n hour(s) ago","",secs/(60*60));
 542     }
 543     else
 544     {
 545         text = tr("%n day(s) ago","",secs/(60*60*24));
 546     }
 547
 548     // Set icon state: spinning if catching up, tick otherwise
 549     if(secs < 90*60 && count >= nTotalBlocks)
 550     {
 551         tooltip = tr("Up to date") + QString(".\n") + tooltip;
 552         labelBlocksIcon->setPixmap(QIcon(":/icons/synced").pixmap(STATUSBAR_ICONSIZE, STATUSBAR_ICONSIZE));
 553     }
 554     else
 555     {
 556         tooltip = tr("Catching up...") + QString("\n") + tooltip;
 557         labelBlocksIcon->setMovie(syncIconMovie);
 558         syncIconMovie->start();
 559     }
 560
 561     if(!text.isEmpty())
 562     {
 563         tooltip += QString("\n");
 564         tooltip += tr("Last received block was generated %1.").arg(text);
 565     }
 566
 567     labelBlocksIcon->setToolTip(tooltip);
 568     progressBarLabel->setToolTip(tooltip);
 569     progressBar->setToolTip(tooltip);
 570 }
 571
 572 void BitcoinGUI::error(const QString &title, const QString &message, bool modal)
 573 {
 574     // Report errors from network/worker thread
 575     if(modal)
 576     {
 577         QMessageBox::critical(this, title, message, QMessageBox::Ok, QMessageBox::Ok);
 578     } else {
 579         notificator->notify(Notificator::Critical, title, message);
 580     }
 581 }
 582
 583 void BitcoinGUI::changeEvent(QEvent *e)
 584 {
 585     QMainWindow::changeEvent(e);
 586 #ifndef Q_WS_MAC // Ignored on Mac
 587     if(e->type() == QEvent::WindowStateChange)
 588     {
 589         if(clientModel && clientModel->getOptionsModel()->getMinimizeToTray())
 590         {
 591             QWindowStateChangeEvent *wsevt = static_cast<QWindowStateChangeEvent*>(e);
 592             if(!(wsevt->oldState() & Qt::WindowMinimized) && isMinimized())
 593             {
 594                 QTimer::singleShot(0, this, SLOT(hide()));
 595                 e->ignore();
 596             }
 597         }
 598     }
 599 #endif
 600 }
 601
 602 void BitcoinGUI::closeEvent(QCloseEvent *event)
 603 {
 604     if(clientModel)
 605     {
 606 #ifndef Q_WS_MAC // Ignored on Mac
 607         if(!clientModel->getOptionsModel()->getMinimizeToTray() &&
 608            !clientModel->getOptionsModel()->getMinimizeOnClose())
 609         {
 610             qApp->quit();
 611         }
 612 #endif
 613     }
 614     QMainWindow::closeEvent(event);
 615 }
 616
 617 void BitcoinGUI::askFee(qint64 nFeeRequired, bool *payFee)
 618 {
 619     QString strMessage =
 620         tr("This transaction is over the size limit.  You can still send it for a fee of %1, "
 621           "which goes to the nodes that process your transaction and helps to support the network.  "
 622           "Do you want to pay the fee?").arg(
 623                 BitcoinUnits::formatWithUnit(BitcoinUnits::BTC, nFeeRequired));
 624     QMessageBox::StandardButton retval = QMessageBox::question(
 625           this, tr("Sending..."), strMessage,
 626           QMessageBox::Yes|QMessageBox::Cancel, QMessageBox::Yes);
 627     *payFee = (retval == QMessageBox::Yes);
 628 }
 629
 630 void BitcoinGUI::incomingTransaction(const QModelIndex & parent, int start, int end)
 631 {
 632     if(!walletModel || !clientModel)
 633         return;
 634     TransactionTableModel *ttm = walletModel->getTransactionTableModel();
 635     qint64 amount = ttm->index(start, TransactionTableModel::Amount, parent)
 636                     .data(Qt::EditRole).toULongLong();
 637     if(!clientModel->inInitialBlockDownload())
 638     {
 639         // On new transaction, make an info balloon
 640         // Unless the initial block download is in progress, to prevent balloon-spam
 641         QString date = ttm->index(start, TransactionTableModel::Date, parent)
 642                         .data().toString();
 643         QString type = ttm->index(start, TransactionTableModel::Type, parent)
 644                         .data().toString();
 645         QString address = ttm->index(start, TransactionTableModel::ToAddress, parent)
 646                         .data().toString();
 647         QIcon icon = qvariant_cast<QIcon>(ttm->index(start,
 648                             TransactionTableModel::ToAddress, parent)
 649                         .data(Qt::DecorationRole));
 650
 651         notificator->notify(Notificator::Information,
 652                             (amount)<0 ? tr("Sent transaction") :
 653                                          tr("Incoming transaction"),
 654                               tr("Date: %1\n"
 655                                  "Amount: %2\n"
 656                                  "Type: %3\n"
 657                                  "Address: %4\n")
 658                               .arg(date)
 659                               .arg(BitcoinUnits::formatWithUnit(walletModel->getOptionsModel()->getDisplayUnit(), amount, true))
 660                               .arg(type)
 661                               .arg(address), icon);
 662     }
 663 }
 664
 665 void BitcoinGUI::gotoOverviewPage()
 666 {
 667     overviewAction->setChecked(true);
 668     centralWidget->setCurrentWidget(overviewPage);
 669
 670     exportAction->setEnabled(false);
 671     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 672 }
 673
 674 void BitcoinGUI::gotoHistoryPage()
 675 {
 676     historyAction->setChecked(true);
 677     centralWidget->setCurrentWidget(transactionsPage);
 678
 679     exportAction->setEnabled(true);
 680     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 681     connect(exportAction, SIGNAL(triggered()), transactionView, SLOT(exportClicked()));
 682 }
 683
 684 void BitcoinGUI::gotoAddressBookPage()
 685 {
 686     addressBookAction->setChecked(true);
 687     centralWidget->setCurrentWidget(addressBookPage);
 688
 689     exportAction->setEnabled(true);
 690     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 691     connect(exportAction, SIGNAL(triggered()), addressBookPage, SLOT(exportClicked()));
 692 }
 693
 694 void BitcoinGUI::gotoReceiveCoinsPage()
 695 {
 696     receiveCoinsAction->setChecked(true);
 697     centralWidget->setCurrentWidget(receiveCoinsPage);
 698
 699     exportAction->setEnabled(true);
 700     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 701     connect(exportAction, SIGNAL(triggered()), receiveCoinsPage, SLOT(exportClicked()));
 702 }
 703
 704 void BitcoinGUI::gotoSendCoinsPage()
 705 {
 706     sendCoinsAction->setChecked(true);
 707     centralWidget->setCurrentWidget(sendCoinsPage);
 708
 709     exportAction->setEnabled(false);
 710     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 711 }
 712
 713 void BitcoinGUI::gotoMessagePage()
 714 {
 715 #ifdef FIRST_CLASS_MESSAGING
 716     messageAction->setChecked(true);
 717     centralWidget->setCurrentWidget(messagePage);
 718
 719     exportAction->setEnabled(false);
 720     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 721 #else
 722     messagePage->show();
 723     messagePage->setFocus();
 724 #endif
 725 }
 726
 727 void BitcoinGUI::gotoMessagePage(QString addr)
 728 {
 729     gotoMessagePage();
 730     messagePage->setAddress(addr);
 731 }
 732
 733 void BitcoinGUI::dragEnterEvent(QDragEnterEvent *event)
 734 {
 735     // Accept only URIs
 736     if(event->mimeData()->hasUrls())
 737         event->acceptProposedAction();
 738 }
 739
 740 void BitcoinGUI::dropEvent(QDropEvent *event)
 741 {
 742     if(event->mimeData()->hasUrls())
 743     {
 744         gotoSendCoinsPage();
 745         QList<QUrl> uris = event->mimeData()->urls();
 746         foreach(const QUrl &uri, uris)
 747         {
 748             sendCoinsPage->handleURI(uri.toString());
 749         }
 750     }
 751
 752     event->acceptProposedAction();
 753 }
 754
 755 void BitcoinGUI::handleURI(QString strURI)
 756 {
 757     gotoSendCoinsPage();
 758     sendCoinsPage->handleURI(strURI);
 759
 760     if(!isActiveWindow())
 761         activateWindow();
 762
 763     showNormalIfMinimized();
 764 }
 765
 766 void BitcoinGUI::setEncryptionStatus(int status)
 767 {
 768     switch(status)
 769     {
 770     case WalletModel::Unencrypted:
 771         labelEncryptionIcon->hide();
 772         encryptWalletAction->setChecked(false);
 773         changePassphraseAction->setEnabled(false);
 774         encryptWalletAction->setEnabled(true);
 775         break;
 776     case WalletModel::Unlocked:
 777         labelEncryptionIcon->show();
 778         labelEncryptionIcon->setPixmap(QIcon(":/icons/lock_open").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 779         labelEncryptionIcon->setToolTip(tr("Wallet is <b>encrypted</b> and currently <b>unlocked</b>"));
 780         encryptWalletAction->setChecked(true);
 781         changePassphraseAction->setEnabled(true);
 782         encryptWalletAction->setEnabled(false); // TODO: decrypt currently not supported
 783         break;
 784     case WalletModel::Locked:
 785         labelEncryptionIcon->show();
 786         labelEncryptionIcon->setPixmap(QIcon(":/icons/lock_closed").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 787         labelEncryptionIcon->setToolTip(tr("Wallet is <b>encrypted</b> and currently <b>locked</b>"));
 788         encryptWalletAction->setChecked(true);
 789         changePassphraseAction->setEnabled(true);
 790         encryptWalletAction->setEnabled(false); // TODO: decrypt currently not supported
 791         break;
 792     }
 793 }
 794
 795 void BitcoinGUI::encryptWallet(bool status)
 796 {
 797     if(!walletModel)
 798         return;
 799     AskPassphraseDialog dlg(status ? AskPassphraseDialog::Encrypt:
 800                                      AskPassphraseDialog::Decrypt, this);
 801     dlg.setModel(walletModel);
 802     dlg.exec();
 803
 804     setEncryptionStatus(walletModel->getEncryptionStatus());
 805 }
 806
 807 void BitcoinGUI::backupWallet()
 808 {
 809     QString saveDir = QDesktopServices::storageLocation(QDesktopServices::DocumentsLocation);
 810     QString filename = QFileDialog::getSaveFileName(this, tr("Backup Wallet"), saveDir, tr("Wallet Data (*.dat)"));
 811     if(!filename.isEmpty()) {
 812         if(!walletModel->backupWallet(filename)) {
 813             QMessageBox::warning(this, tr("Backup Failed"), tr("There was an error trying to save the wallet data to the new location."));
 814         }
 815     }
 816 }
 817
 818 void BitcoinGUI::changePassphrase()
 819 {
 820     AskPassphraseDialog dlg(AskPassphraseDialog::ChangePass, this);
 821     dlg.setModel(walletModel);
 822     dlg.exec();
 823 }
 824
 825 void BitcoinGUI::unlockWallet()
 826 {
 827     if(!walletModel)
 828         return;
 829     // Unlock wallet when requested by wallet model
 830     if(walletModel->getEncryptionStatus() == WalletModel::Locked)
 831     {
 832         AskPassphraseDialog dlg(AskPassphraseDialog::Unlock, this);
 833         dlg.setModel(walletModel);
 834         dlg.exec();
 835     }
 836 }
 837
 838 void BitcoinGUI::showNormalIfMinimized()
 839 {
 840     if(!isVisible()) // Show, if hidden
 841         show();
 842     if(isMinimized()) // Unminimize, if minimized
 843         showNormal();
 844 }