src/qt/bitcoingui.cpp

   1 /*
   2  * Qt4 bitcoin GUI.
   3  *
   4  * W.J. van der Laan 2011
   5  * The Bitcoin Developers 2011
   6  */
   7 #include "bitcoingui.h"
   8 #include "transactiontablemodel.h"
   9 #include "addressbookpage.h"
  10 #include "sendcoinsdialog.h"
  11 #include "optionsdialog.h"
  12 #include "aboutdialog.h"
  13 #include "clientmodel.h"
  14 #include "walletmodel.h"
  15 #include "editaddressdialog.h"
  16 #include "optionsmodel.h"
  17 #include "transactiondescdialog.h"
  18 #include "addresstablemodel.h"
  19 #include "transactionview.h"
  20 #include "overviewpage.h"
  21 #include "bitcoinunits.h"
  22 #include "guiconstants.h"
  23 #include "askpassphrasedialog.h"
  24 #include "notificator.h"
  25
  26 #ifdef Q_WS_MAC
  27 #include "macdockiconhandler.h"
  28 #endif
  29
  30 #include <QApplication>
  31 #include <QMainWindow>
  32 #include <QMenuBar>
  33 #include <QMenu>
  34 #include <QIcon>
  35 #include <QTabWidget>
  36 #include <QVBoxLayout>
  37 #include <QToolBar>
  38 #include <QStatusBar>
  39 #include <QLabel>
  40 #include <QLineEdit>
  41 #include <QPushButton>
  42 #include <QLocale>
  43 #include <QMessageBox>
  44 #include <QProgressBar>
  45 #include <QStackedWidget>
  46 #include <QDateTime>
  47 #include <QMovie>
  48
  49 #include <QDragEnterEvent>
  50 #include <QUrl>
  51
  52 #include <iostream>
  53
  54 BitcoinGUI::BitcoinGUI(QWidget *parent):
  55     QMainWindow(parent),
  56     clientModel(0),
  57     walletModel(0),
  58     encryptWalletAction(0),
  59     changePassphraseAction(0),
  60     aboutQtAction(0),
  61     trayIcon(0),
  62     notificator(0)
  63 {
  64     resize(850, 550);
  65     setWindowTitle(tr("Bitcoin Wallet"));
  66 #ifndef Q_WS_MAC
  67     setWindowIcon(QIcon(":icons/bitcoin"));
  68 #else
  69     setUnifiedTitleAndToolBarOnMac(true);
  70     QApplication::setAttribute(Qt::AA_DontShowIconsInMenus);
  71 #endif
  72     // Accept D&D of URIs
  73     setAcceptDrops(true);
  74
  75     // Create actions for the toolbar, menu bar and tray/dock icon
  76     createActions();
  77
  78     // Create application menu bar
  79     createMenuBar();
  80
  81     // Create the toolbars
  82     createToolBars();
  83
  84     // Create the tray icon (or setup the dock icon)
  85     createTrayIcon();
  86
  87     // Create tabs
  88     overviewPage = new OverviewPage();
  89
  90     transactionsPage = new QWidget(this);
  91     QVBoxLayout *vbox = new QVBoxLayout();
  92     transactionView = new TransactionView(this);
  93     vbox->addWidget(transactionView);
  94     transactionsPage->setLayout(vbox);
  95
  96     addressBookPage = new AddressBookPage(AddressBookPage::ForEditing, AddressBookPage::SendingTab);
  97
  98     receiveCoinsPage = new AddressBookPage(AddressBookPage::ForEditing, AddressBookPage::ReceivingTab);
  99
 100     sendCoinsPage = new SendCoinsDialog(this);
 101
 102     centralWidget = new QStackedWidget(this);
 103     centralWidget->addWidget(overviewPage);
 104     centralWidget->addWidget(transactionsPage);
 105     centralWidget->addWidget(addressBookPage);
 106     centralWidget->addWidget(receiveCoinsPage);
 107     centralWidget->addWidget(sendCoinsPage);
 108     setCentralWidget(centralWidget);
 109
 110     // Create status bar
 111     statusBar();
 112
 113     // Status bar notification icons
 114     QFrame *frameBlocks = new QFrame();
 115     //frameBlocks->setFrameStyle(QFrame::Panel | QFrame::Sunken);
 116     frameBlocks->setContentsMargins(0,0,0,0);
 117     frameBlocks->setMinimumWidth(56);
 118     frameBlocks->setMaximumWidth(56);
 119     QHBoxLayout *frameBlocksLayout = new QHBoxLayout(frameBlocks);
 120     frameBlocksLayout->setContentsMargins(3,0,3,0);
 121     frameBlocksLayout->setSpacing(3);
 122     labelEncryptionIcon = new QLabel();
 123     labelConnectionsIcon = new QLabel();
 124     labelBlocksIcon = new QLabel();
 125     frameBlocksLayout->addStretch();
 126     frameBlocksLayout->addWidget(labelEncryptionIcon);
 127     frameBlocksLayout->addStretch();
 128     frameBlocksLayout->addWidget(labelConnectionsIcon);
 129     frameBlocksLayout->addStretch();
 130     frameBlocksLayout->addWidget(labelBlocksIcon);
 131     frameBlocksLayout->addStretch();
 132
 133     // Progress bar for blocks download
 134     progressBarLabel = new QLabel(tr("Synchronizing with network..."));
 135     progressBarLabel->setVisible(false);
 136     progressBar = new QProgressBar();
 137     progressBar->setToolTip(tr("Block chain synchronization in progress"));
 138     progressBar->setVisible(false);
 139
 140     statusBar()->addWidget(progressBarLabel);
 141     statusBar()->addWidget(progressBar);
 142     statusBar()->addPermanentWidget(frameBlocks);
 143
 144     syncIconMovie = new QMovie(":/movies/update_spinner", "mng", this);
 145
 146     // Clicking on a transaction on the overview page simply sends you to transaction history page
 147     connect(overviewPage, SIGNAL(transactionClicked(QModelIndex)), this, SLOT(gotoHistoryPage()));
 148
 149     // Doubleclicking on a transaction on the transaction history page shows details
 150     connect(transactionView, SIGNAL(doubleClicked(QModelIndex)), transactionView, SLOT(showDetails()));
 151
 152     gotoOverviewPage();
 153 }
 154
 155 BitcoinGUI::~BitcoinGUI()
 156 {
 157 #ifdef Q_WS_MAC
 158     delete appMenuBar;
 159 #endif
 160 }
 161
 162 void BitcoinGUI::createActions()
 163 {
 164     QActionGroup *tabGroup = new QActionGroup(this);
 165
 166     overviewAction = new QAction(QIcon(":/icons/overview"), tr("&Overview"), this);
 167     overviewAction->setToolTip(tr("Show general overview of wallet"));
 168     overviewAction->setCheckable(true);
 169     overviewAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_1));
 170     tabGroup->addAction(overviewAction);
 171
 172     historyAction = new QAction(QIcon(":/icons/history"), tr("&Transactions"), this);
 173     historyAction->setToolTip(tr("Browse transaction history"));
 174     historyAction->setCheckable(true);
 175     historyAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_4));
 176     tabGroup->addAction(historyAction);
 177
 178     addressBookAction = new QAction(QIcon(":/icons/address-book"), tr("&Address Book"), this);
 179     addressBookAction->setToolTip(tr("Edit the list of stored addresses and labels"));
 180     addressBookAction->setCheckable(true);
 181     addressBookAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_5));
 182     tabGroup->addAction(addressBookAction);
 183
 184     receiveCoinsAction = new QAction(QIcon(":/icons/receiving_addresses"), tr("&Receive coins"), this);
 185     receiveCoinsAction->setToolTip(tr("Show the list of addresses for receiving payments"));
 186     receiveCoinsAction->setCheckable(true);
 187     receiveCoinsAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_3));
 188     tabGroup->addAction(receiveCoinsAction);
 189
 190     sendCoinsAction = new QAction(QIcon(":/icons/send"), tr("&Send coins"), this);
 191     sendCoinsAction->setToolTip(tr("Send coins to a bitcoin address"));
 192     sendCoinsAction->setCheckable(true);
 193     sendCoinsAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_2));
 194     tabGroup->addAction(sendCoinsAction);
 195
 196     connect(overviewAction, SIGNAL(triggered()), this, SLOT(show()));
 197     connect(overviewAction, SIGNAL(triggered()), this, SLOT(gotoOverviewPage()));
 198     connect(historyAction, SIGNAL(triggered()), this, SLOT(show()));
 199     connect(historyAction, SIGNAL(triggered()), this, SLOT(gotoHistoryPage()));
 200     connect(addressBookAction, SIGNAL(triggered()), this, SLOT(show()));
 201     connect(addressBookAction, SIGNAL(triggered()), this, SLOT(gotoAddressBookPage()));
 202     connect(receiveCoinsAction, SIGNAL(triggered()), this, SLOT(show()));
 203     connect(receiveCoinsAction, SIGNAL(triggered()), this, SLOT(gotoReceiveCoinsPage()));
 204     connect(sendCoinsAction, SIGNAL(triggered()), this, SLOT(show()));
 205     connect(sendCoinsAction, SIGNAL(triggered()), this, SLOT(gotoSendCoinsPage()));
 206
 207     quitAction = new QAction(QIcon(":/icons/quit"), tr("E&xit"), this);
 208     quitAction->setToolTip(tr("Quit application"));
 209     quitAction->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q));
 210     quitAction->setMenuRole(QAction::QuitRole);
 211     aboutAction = new QAction(QIcon(":/icons/bitcoin"), tr("&About %1").arg(qApp->applicationName()), this);
 212     aboutAction->setToolTip(tr("Show information about Bitcoin"));
 213     aboutAction->setMenuRole(QAction::AboutRole);
 214     aboutQtAction = new QAction(tr("About &Qt"), this);
 215     aboutQtAction->setToolTip(tr("Show information about Qt"));
 216     aboutQtAction->setMenuRole(QAction::AboutQtRole);
 217     optionsAction = new QAction(QIcon(":/icons/options"), tr("&Options..."), this);
 218     optionsAction->setToolTip(tr("Modify configuration options for bitcoin"));
 219     optionsAction->setMenuRole(QAction::PreferencesRole);
 220     openBitcoinAction = new QAction(QIcon(":/icons/bitcoin"), tr("Open &Bitcoin"), this);
 221     openBitcoinAction->setToolTip(tr("Show the Bitcoin window"));
 222     exportAction = new QAction(QIcon(":/icons/export"), tr("&Export..."), this);
 223     exportAction->setToolTip(tr("Export the current view to a file"));
 224     encryptWalletAction = new QAction(QIcon(":/icons/lock_closed"), tr("&Encrypt Wallet"), this);
 225     encryptWalletAction->setToolTip(tr("Encrypt or decrypt wallet"));
 226     encryptWalletAction->setCheckable(true);
 227     changePassphraseAction = new QAction(QIcon(":/icons/key"), tr("&Change Passphrase"), this);
 228     changePassphraseAction->setToolTip(tr("Change the passphrase used for wallet encryption"));
 229
 230     connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
 231     connect(optionsAction, SIGNAL(triggered()), this, SLOT(optionsClicked()));
 232     connect(aboutAction, SIGNAL(triggered()), this, SLOT(aboutClicked()));
 233     connect(aboutQtAction, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
 234     connect(openBitcoinAction, SIGNAL(triggered()), this, SLOT(showNormal()));
 235     connect(encryptWalletAction, SIGNAL(triggered(bool)), this, SLOT(encryptWallet(bool)));
 236     connect(changePassphraseAction, SIGNAL(triggered()), this, SLOT(changePassphrase()));
 237 }
 238
 239 void BitcoinGUI::createMenuBar()
 240 {
 241 #ifdef Q_WS_MAC
 242     // Create a decoupled menu bar on Mac which stays even if the window is closed
 243     appMenuBar = new QMenuBar();
 244 #else
 245     // Get the main window's menu bar on other platforms
 246     appMenuBar = menuBar();
 247 #endif
 248
 249     // Configure the menus
 250     QMenu *file = appMenuBar->addMenu(tr("&File"));
 251     file->addAction(quitAction);
 252
 253     QMenu *settings = appMenuBar->addMenu(tr("&Settings"));
 254     settings->addAction(encryptWalletAction);
 255     settings->addAction(changePassphraseAction);
 256     settings->addSeparator();
 257     settings->addAction(optionsAction);
 258
 259     QMenu *help = appMenuBar->addMenu(tr("&Help"));
 260     help->addAction(aboutAction);
 261     help->addAction(aboutQtAction);
 262 }
 263
 264 void BitcoinGUI::createToolBars()
 265 {
 266     QToolBar *toolbar = addToolBar(tr("Tabs toolbar"));
 267     toolbar->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 268     toolbar->addAction(overviewAction);
 269     toolbar->addAction(sendCoinsAction);
 270     toolbar->addAction(receiveCoinsAction);
 271     toolbar->addAction(historyAction);
 272     toolbar->addAction(addressBookAction);
 273
 274     QToolBar *toolbar2 = addToolBar(tr("Actions toolbar"));
 275     toolbar2->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 276     toolbar2->addAction(exportAction);
 277 }
 278
 279 void BitcoinGUI::setClientModel(ClientModel *clientModel)
 280 {
 281     this->clientModel = clientModel;
 282     if(clientModel)
 283     {
 284         if(clientModel->isTestNet())
 285         {
 286             QString title_testnet = windowTitle() + QString(" ") + tr("[testnet]");
 287             setWindowTitle(title_testnet);
 288 #ifndef Q_WS_MAC
 289             setWindowIcon(QIcon(":icons/bitcoin_testnet"));
 290 #else
 291             MacDockIconHandler::instance()->setIcon(QIcon(":icons/bitcoin_testnet"));
 292 #endif
 293             if(trayIcon)
 294             {
 295                 trayIcon->setToolTip(title_testnet);
 296                 trayIcon->setIcon(QIcon(":/icons/toolbar_testnet"));
 297             }
 298         }
 299
 300         // Keep up to date with client
 301         setNumConnections(clientModel->getNumConnections());
 302         connect(clientModel, SIGNAL(numConnectionsChanged(int)), this, SLOT(setNumConnections(int)));
 303
 304         setNumBlocks(clientModel->getNumBlocks());
 305         connect(clientModel, SIGNAL(numBlocksChanged(int)), this, SLOT(setNumBlocks(int)));
 306
 307         // Report errors from network/worker thread
 308         connect(clientModel, SIGNAL(error(QString,QString)), this, SLOT(error(QString,QString)));
 309     }
 310 }
 311
 312 void BitcoinGUI::setWalletModel(WalletModel *walletModel)
 313 {
 314     this->walletModel = walletModel;
 315     if(walletModel)
 316     {
 317         // Report errors from wallet thread
 318         connect(walletModel, SIGNAL(error(QString,QString)), this, SLOT(error(QString,QString)));
 319
 320         // Put transaction list in tabs
 321         transactionView->setModel(walletModel);
 322
 323         overviewPage->setModel(walletModel);
 324         addressBookPage->setModel(walletModel->getAddressTableModel());
 325         receiveCoinsPage->setModel(walletModel->getAddressTableModel());
 326         sendCoinsPage->setModel(walletModel);
 327
 328         setEncryptionStatus(walletModel->getEncryptionStatus());
 329         connect(walletModel, SIGNAL(encryptionStatusChanged(int)), this, SLOT(setEncryptionStatus(int)));
 330
 331         // Balloon popup for new transaction
 332         connect(walletModel->getTransactionTableModel(), SIGNAL(rowsInserted(QModelIndex,int,int)),
 333                 this, SLOT(incomingTransaction(QModelIndex,int,int)));
 334
 335         // Ask for passphrase if needed
 336         connect(walletModel, SIGNAL(requireUnlock()), this, SLOT(unlockWallet()));
 337     }
 338 }
 339
 340 void BitcoinGUI::createTrayIcon()
 341 {
 342     QMenu *trayIconMenu;
 343 #ifndef Q_WS_MAC
 344     trayIcon = new QSystemTrayIcon(this);
 345     trayIconMenu = new QMenu(this);
 346     trayIcon->setContextMenu(trayIconMenu);
 347     trayIcon->setToolTip("Bitcoin client");
 348     trayIcon->setIcon(QIcon(":/icons/toolbar"));
 349     connect(trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
 350             this, SLOT(trayIconActivated(QSystemTrayIcon::ActivationReason)));
 351     trayIcon->show();
 352 #else
 353     // Note: On Mac, the dock icon is used to provide the tray's functionality.
 354     MacDockIconHandler *dockIconHandler = MacDockIconHandler::instance();
 355     connect(dockIconHandler, SIGNAL(dockIconClicked()), openBitcoinAction, SLOT(trigger()));
 356     trayIconMenu = dockIconHandler->dockMenu();
 357 #endif
 358
 359     // Configuration of the tray icon (or dock icon) icon menu
 360     trayIconMenu->addAction(openBitcoinAction);
 361     trayIconMenu->addSeparator();
 362     trayIconMenu->addAction(receiveCoinsAction);
 363     trayIconMenu->addAction(sendCoinsAction);
 364     trayIconMenu->addSeparator();
 365     trayIconMenu->addAction(optionsAction);
 366 #ifndef Q_WS_MAC // This is built-in on Mac
 367     trayIconMenu->addSeparator();
 368     trayIconMenu->addAction(quitAction);
 369 #endif
 370
 371     notificator = new Notificator(tr("bitcoin-qt"), trayIcon);
 372 }
 373
 374 #ifndef Q_WS_MAC
 375 void BitcoinGUI::trayIconActivated(QSystemTrayIcon::ActivationReason reason)
 376 {
 377     if(reason == QSystemTrayIcon::Trigger)
 378     {
 379         // Click on system tray icon triggers "open bitcoin"
 380         openBitcoinAction->trigger();
 381     }
 382
 383 }
 384 #endif
 385
 386 void BitcoinGUI::optionsClicked()
 387 {
 388     if(!clientModel || !clientModel->getOptionsModel())
 389         return;
 390     OptionsDialog dlg;
 391     dlg.setModel(clientModel->getOptionsModel());
 392     dlg.exec();
 393 }
 394
 395 void BitcoinGUI::aboutClicked()
 396 {
 397     AboutDialog dlg;
 398     dlg.setModel(clientModel);
 399     dlg.exec();
 400 }
 401
 402 void BitcoinGUI::setNumConnections(int count)
 403 {
 404     QString icon;
 405     switch(count)
 406     {
 407     case 0: icon = ":/icons/connect_0"; break;
 408     case 1: case 2: case 3: icon = ":/icons/connect_1"; break;
 409     case 4: case 5: case 6: icon = ":/icons/connect_2"; break;
 410     case 7: case 8: case 9: icon = ":/icons/connect_3"; break;
 411     default: icon = ":/icons/connect_4"; break;
 412     }
 413     labelConnectionsIcon->setPixmap(QIcon(icon).pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 414     labelConnectionsIcon->setToolTip(tr("%n active connection(s) to Bitcoin network", "", count));
 415 }
 416
 417 void BitcoinGUI::setNumBlocks(int count)
 418 {
 419     if(!clientModel)
 420         return;
 421     int total = clientModel->getNumBlocksOfPeers();
 422     QString tooltip;
 423
 424     if(count < total)
 425     {
 426         if (clientModel->getStatusBarWarnings() == "")
 427         {
 428             progressBarLabel->setVisible(true);
 429             progressBarLabel->setText(tr("Synchronizing with network..."));
 430             progressBar->setVisible(true);
 431             progressBar->setMaximum(total);
 432             progressBar->setValue(count);
 433         }
 434         else
 435         {
 436             progressBarLabel->setText(clientModel->getStatusBarWarnings());
 437             progressBarLabel->setVisible(true);
 438             progressBar->setVisible(false);
 439         }
 440         tooltip = tr("Downloaded %1 of %2 blocks of transaction history.").arg(count).arg(total);
 441     }
 442     else
 443     {
 444         if (clientModel->getStatusBarWarnings() == "")
 445             progressBarLabel->setVisible(false);
 446         else
 447         {
 448             progressBarLabel->setText(clientModel->getStatusBarWarnings());
 449             progressBarLabel->setVisible(true);
 450         }
 451         progressBar->setVisible(false);
 452         tooltip = tr("Downloaded %1 blocks of transaction history.").arg(count);
 453     }
 454
 455     QDateTime now = QDateTime::currentDateTime();
 456     QDateTime lastBlockDate = clientModel->getLastBlockDate();
 457     int secs = lastBlockDate.secsTo(now);
 458     QString text;
 459
 460     // Represent time from last generated block in human readable text
 461     if(secs < 60)
 462     {
 463         text = tr("%n second(s) ago","",secs);
 464     }
 465     else if(secs < 60*60)
 466     {
 467         text = tr("%n minute(s) ago","",secs/60);
 468     }
 469     else if(secs < 24*60*60)
 470     {
 471         text = tr("%n hour(s) ago","",secs/(60*60));
 472     }
 473     else
 474     {
 475         text = tr("%n day(s) ago","",secs/(60*60*24));
 476     }
 477
 478     // Set icon state: spinning if catching up, tick otherwise
 479     if(secs < 30*60)
 480     {
 481         tooltip = tr("Up to date") + QString("\n") + tooltip;
 482         labelBlocksIcon->setPixmap(QIcon(":/icons/synced").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 483     }
 484     else
 485     {
 486         tooltip = tr("Catching up...") + QString("\n") + tooltip;
 487         labelBlocksIcon->setMovie(syncIconMovie);
 488         syncIconMovie->start();
 489     }
 490
 491     tooltip += QString("\n");
 492     tooltip += tr("Last received block was generated %1.").arg(text);
 493
 494     labelBlocksIcon->setToolTip(tooltip);
 495     progressBarLabel->setToolTip(tooltip);
 496     progressBar->setToolTip(tooltip);
 497 }
 498
 499 void BitcoinGUI::refreshStatusBar()
 500 {
 501     /* Might display multiple times in the case of multiple alerts
 502     static QString prevStatusBar;
 503     QString newStatusBar = clientModel->getStatusBarWarnings();
 504     if (prevStatusBar != newStatusBar)
 505     {
 506         prevStatusBar = newStatusBar;
 507         error(tr("Network Alert"), newStatusBar);
 508     }*/
 509     setNumBlocks(clientModel->getNumBlocks());
 510 }
 511
 512 void BitcoinGUI::error(const QString &title, const QString &message)
 513 {
 514     // Report errors from network/worker thread
 515     notificator->notify(Notificator::Critical, title, message);
 516 }
 517
 518 void BitcoinGUI::changeEvent(QEvent *e)
 519 {
 520 #ifndef Q_WS_MAC // Ignored on Mac
 521     if(e->type() == QEvent::WindowStateChange)
 522     {
 523         if(clientModel && clientModel->getOptionsModel()->getMinimizeToTray())
 524         {
 525             if(isMinimized())
 526             {
 527                 hide();
 528                 e->ignore();
 529             }
 530             else
 531             {
 532                 show();
 533                 e->accept();
 534             }
 535         }
 536     }
 537 #endif
 538     QMainWindow::changeEvent(e);
 539 }
 540
 541 void BitcoinGUI::closeEvent(QCloseEvent *event)
 542 {
 543     if(clientModel)
 544     {
 545 #ifndef Q_WS_MAC // Ignored on Mac
 546         if(!clientModel->getOptionsModel()->getMinimizeToTray() &&
 547            !clientModel->getOptionsModel()->getMinimizeOnClose())
 548         {
 549             qApp->quit();
 550         }
 551 #endif
 552     }
 553     QMainWindow::closeEvent(event);
 554 }
 555
 556 void BitcoinGUI::askFee(qint64 nFeeRequired, bool *payFee)
 557 {
 558     QString strMessage =
 559         tr("This transaction is over the size limit.  You can still send it for a fee of %1, "
 560           "which goes to the nodes that process your transaction and helps to support the network.  "
 561           "Do you want to pay the fee?").arg(
 562                 BitcoinUnits::formatWithUnit(BitcoinUnits::BTC, nFeeRequired));
 563     QMessageBox::StandardButton retval = QMessageBox::question(
 564           this, tr("Sending..."), strMessage,
 565           QMessageBox::Yes|QMessageBox::Cancel, QMessageBox::Yes);
 566     *payFee = (retval == QMessageBox::Yes);
 567 }
 568
 569 void BitcoinGUI::incomingTransaction(const QModelIndex & parent, int start, int end)
 570 {
 571     if(!walletModel || !clientModel)
 572         return;
 573     TransactionTableModel *ttm = walletModel->getTransactionTableModel();
 574     qint64 amount = ttm->index(start, TransactionTableModel::Amount, parent)
 575                     .data(Qt::EditRole).toULongLong();
 576     if(!clientModel->inInitialBlockDownload())
 577     {
 578         // On new transaction, make an info balloon
 579         // Unless the initial block download is in progress, to prevent balloon-spam
 580         QString date = ttm->index(start, TransactionTableModel::Date, parent)
 581                         .data().toString();
 582         QString type = ttm->index(start, TransactionTableModel::Type, parent)
 583                         .data().toString();
 584         QString address = ttm->index(start, TransactionTableModel::ToAddress, parent)
 585                         .data().toString();
 586         QIcon icon = qvariant_cast<QIcon>(ttm->index(start,
 587                             TransactionTableModel::ToAddress, parent)
 588                         .data(Qt::DecorationRole));
 589
 590         notificator->notify(Notificator::Information,
 591                             (amount)<0 ? tr("Sent transaction") :
 592                                          tr("Incoming transaction"),
 593                               tr("Date: %1\n"
 594                                  "Amount: %2\n"
 595                                  "Type: %3\n"
 596                                  "Address: %4\n")
 597                               .arg(date)
 598                               .arg(BitcoinUnits::formatWithUnit(walletModel->getOptionsModel()->getDisplayUnit(), amount, true))
 599                               .arg(type)
 600                               .arg(address), icon);
 601     }
 602 }
 603
 604 void BitcoinGUI::gotoOverviewPage()
 605 {
 606     overviewAction->setChecked(true);
 607     centralWidget->setCurrentWidget(overviewPage);
 608
 609     exportAction->setEnabled(false);
 610     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 611 }
 612
 613 void BitcoinGUI::gotoHistoryPage()
 614 {
 615     historyAction->setChecked(true);
 616     centralWidget->setCurrentWidget(transactionsPage);
 617
 618     exportAction->setEnabled(true);
 619     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 620     connect(exportAction, SIGNAL(triggered()), transactionView, SLOT(exportClicked()));
 621 }
 622
 623 void BitcoinGUI::gotoAddressBookPage()
 624 {
 625     addressBookAction->setChecked(true);
 626     centralWidget->setCurrentWidget(addressBookPage);
 627
 628     exportAction->setEnabled(true);
 629     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 630     connect(exportAction, SIGNAL(triggered()), addressBookPage, SLOT(exportClicked()));
 631 }
 632
 633 void BitcoinGUI::gotoReceiveCoinsPage()
 634 {
 635     receiveCoinsAction->setChecked(true);
 636     centralWidget->setCurrentWidget(receiveCoinsPage);
 637
 638     exportAction->setEnabled(true);
 639     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 640     connect(exportAction, SIGNAL(triggered()), receiveCoinsPage, SLOT(exportClicked()));
 641 }
 642
 643 void BitcoinGUI::gotoSendCoinsPage()
 644 {
 645     sendCoinsAction->setChecked(true);
 646     centralWidget->setCurrentWidget(sendCoinsPage);
 647
 648     exportAction->setEnabled(false);
 649     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 650 }
 651
 652 void BitcoinGUI::dragEnterEvent(QDragEnterEvent *event)
 653 {
 654     // Accept only URLs
 655     if(event->mimeData()->hasUrls())
 656         event->acceptProposedAction();
 657 }
 658
 659 void BitcoinGUI::dropEvent(QDropEvent *event)
 660 {
 661     if(event->mimeData()->hasUrls())
 662     {
 663         gotoSendCoinsPage();
 664         QList<QUrl> urls = event->mimeData()->urls();
 665         foreach(const QUrl &url, urls)
 666         {
 667             sendCoinsPage->handleURL(&url);
 668         }
 669     }
 670
 671     event->acceptProposedAction();
 672 }
 673
 674 void BitcoinGUI::setEncryptionStatus(int status)
 675 {
 676     switch(status)
 677     {
 678     case WalletModel::Unencrypted:
 679         labelEncryptionIcon->hide();
 680         encryptWalletAction->setChecked(false);
 681         changePassphraseAction->setEnabled(false);
 682         encryptWalletAction->setEnabled(true);
 683         break;
 684     case WalletModel::Unlocked:
 685         labelEncryptionIcon->show();
 686         labelEncryptionIcon->setPixmap(QIcon(":/icons/lock_open").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 687         labelEncryptionIcon->setToolTip(tr("Wallet is <b>encrypted</b> and currently <b>unlocked</b>"));
 688         encryptWalletAction->setChecked(true);
 689         changePassphraseAction->setEnabled(true);
 690         encryptWalletAction->setEnabled(false); // TODO: decrypt currently not supported
 691         break;
 692     case WalletModel::Locked:
 693         labelEncryptionIcon->show();
 694         labelEncryptionIcon->setPixmap(QIcon(":/icons/lock_closed").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 695         labelEncryptionIcon->setToolTip(tr("Wallet is <b>encrypted</b> and currently <b>locked</b>"));
 696         encryptWalletAction->setChecked(true);
 697         changePassphraseAction->setEnabled(true);
 698         encryptWalletAction->setEnabled(false); // TODO: decrypt currently not supported
 699         break;
 700     }
 701 }
 702
 703 void BitcoinGUI::encryptWallet(bool status)
 704 {
 705     if(!walletModel)
 706         return;
 707     AskPassphraseDialog dlg(status ? AskPassphraseDialog::Encrypt:
 708                                      AskPassphraseDialog::Decrypt, this);
 709     dlg.setModel(walletModel);
 710     dlg.exec();
 711
 712     setEncryptionStatus(walletModel->getEncryptionStatus());
 713 }
 714
 715 void BitcoinGUI::changePassphrase()
 716 {
 717     AskPassphraseDialog dlg(AskPassphraseDialog::ChangePass, this);
 718     dlg.setModel(walletModel);
 719     dlg.exec();
 720 }
 721
 722 void BitcoinGUI::unlockWallet()
 723 {
 724     if(!walletModel)
 725         return;
 726     // Unlock wallet when requested by wallet model
 727     if(walletModel->getEncryptionStatus() == WalletModel::Locked)
 728     {
 729         AskPassphraseDialog dlg(AskPassphraseDialog::Unlock, this);
 730         dlg.setModel(walletModel);
 731         dlg.exec();
 732     }
 733 }