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 <QtGlobal>
  31 #include <QApplication>
  32 #include <QMainWindow>
  33 #include <QMenuBar>
  34 #include <QMenu>
  35 #include <QIcon>
  36 #include <QTabWidget>
  37 #include <QVBoxLayout>
  38 #include <QToolBar>
  39 #include <QStatusBar>
  40 #include <QLabel>
  41 #include <QLineEdit>
  42 #include <QPushButton>
  43 #include <QLocale>
  44 #include <QMessageBox>
  45 #include <QProgressBar>
  46 #include <QStackedWidget>
  47 #include <QDateTime>
  48 #include <QMovie>
  49
  50 #include <QDragEnterEvent>
  51 #include <QUrl>
  52
  53 #include <iostream>
  54
  55 BitcoinGUI::BitcoinGUI(QWidget *parent):
  56     QMainWindow(parent),
  57     clientModel(0),
  58     walletModel(0),
  59     encryptWalletAction(0),
  60     changePassphraseAction(0),
  61     aboutQtAction(0),
  62     trayIcon(0),
  63     notificator(0)
  64 {
  65     resize(850, 550);
  66     setWindowTitle(tr("Bitcoin Wallet"));
  67 #ifndef Q_WS_MAC
  68     setWindowIcon(QIcon(":icons/bitcoin"));
  69 #else
  70     setUnifiedTitleAndToolBarOnMac(true);
  71     QApplication::setAttribute(Qt::AA_DontShowIconsInMenus);
  72 #endif
  73     // Accept D&D of URIs
  74     setAcceptDrops(true);
  75
  76     // Create actions for the toolbar, menu bar and tray/dock icon
  77     createActions();
  78
  79     // Create application menu bar
  80     createMenuBar();
  81
  82     // Create the toolbars
  83     createToolBars();
  84
  85     // Create the tray icon (or setup the dock icon)
  86     createTrayIcon();
  87
  88     // Create tabs
  89     overviewPage = new OverviewPage();
  90
  91     transactionsPage = new QWidget(this);
  92     QVBoxLayout *vbox = new QVBoxLayout();
  93     transactionView = new TransactionView(this);
  94     vbox->addWidget(transactionView);
  95     transactionsPage->setLayout(vbox);
  96
  97     addressBookPage = new AddressBookPage(AddressBookPage::ForEditing, AddressBookPage::SendingTab);
  98
  99     receiveCoinsPage = new AddressBookPage(AddressBookPage::ForEditing, AddressBookPage::ReceivingTab);
 100
 101     sendCoinsPage = new SendCoinsDialog(this);
 102
 103     centralWidget = new QStackedWidget(this);
 104     centralWidget->addWidget(overviewPage);
 105     centralWidget->addWidget(transactionsPage);
 106     centralWidget->addWidget(addressBookPage);
 107     centralWidget->addWidget(receiveCoinsPage);
 108     centralWidget->addWidget(sendCoinsPage);
 109     setCentralWidget(centralWidget);
 110
 111     // Create status bar
 112     statusBar();
 113
 114     // Status bar notification icons
 115     QFrame *frameBlocks = new QFrame();
 116     //frameBlocks->setFrameStyle(QFrame::Panel | QFrame::Sunken);
 117     frameBlocks->setContentsMargins(0,0,0,0);
 118     frameBlocks->setMinimumWidth(56);
 119     frameBlocks->setMaximumWidth(56);
 120     QHBoxLayout *frameBlocksLayout = new QHBoxLayout(frameBlocks);
 121     frameBlocksLayout->setContentsMargins(3,0,3,0);
 122     frameBlocksLayout->setSpacing(3);
 123     labelEncryptionIcon = new QLabel();
 124     labelConnectionsIcon = new QLabel();
 125     labelBlocksIcon = new QLabel();
 126     frameBlocksLayout->addStretch();
 127     frameBlocksLayout->addWidget(labelEncryptionIcon);
 128     frameBlocksLayout->addStretch();
 129     frameBlocksLayout->addWidget(labelConnectionsIcon);
 130     frameBlocksLayout->addStretch();
 131     frameBlocksLayout->addWidget(labelBlocksIcon);
 132     frameBlocksLayout->addStretch();
 133
 134     // Progress bar for blocks download
 135     progressBarLabel = new QLabel(tr("Synchronizing with network..."));
 136     progressBarLabel->setVisible(false);
 137     progressBar = new QProgressBar();
 138     progressBar->setToolTip(tr("Block chain synchronization in progress"));
 139     progressBar->setVisible(false);
 140
 141     statusBar()->addWidget(progressBarLabel);
 142     statusBar()->addWidget(progressBar);
 143     statusBar()->addPermanentWidget(frameBlocks);
 144
 145     syncIconMovie = new QMovie(":/movies/update_spinner", "mng", this);
 146
 147     // Clicking on a transaction on the overview page simply sends you to transaction history page
 148     connect(overviewPage, SIGNAL(transactionClicked(QModelIndex)), this, SLOT(gotoHistoryPage()));
 149
 150     // Doubleclicking on a transaction on the transaction history page shows details
 151     connect(transactionView, SIGNAL(doubleClicked(QModelIndex)), transactionView, SLOT(showDetails()));
 152
 153     gotoOverviewPage();
 154 }
 155
 156 BitcoinGUI::~BitcoinGUI()
 157 {
 158 #ifdef Q_WS_MAC
 159     delete appMenuBar;
 160 #endif
 161 }
 162
 163 void BitcoinGUI::createActions()
 164 {
 165     QActionGroup *tabGroup = new QActionGroup(this);
 166
 167     overviewAction = new QAction(QIcon(":/icons/overview"), tr("&Overview"), this);
 168     overviewAction->setToolTip(tr("Show general overview of wallet"));
 169     overviewAction->setCheckable(true);
 170     overviewAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_1));
 171     tabGroup->addAction(overviewAction);
 172
 173     historyAction = new QAction(QIcon(":/icons/history"), tr("&Transactions"), this);
 174     historyAction->setToolTip(tr("Browse transaction history"));
 175     historyAction->setCheckable(true);
 176     historyAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_4));
 177     tabGroup->addAction(historyAction);
 178
 179     addressBookAction = new QAction(QIcon(":/icons/address-book"), tr("&Address Book"), this);
 180     addressBookAction->setToolTip(tr("Edit the list of stored addresses and labels"));
 181     addressBookAction->setCheckable(true);
 182     addressBookAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_5));
 183     tabGroup->addAction(addressBookAction);
 184
 185     receiveCoinsAction = new QAction(QIcon(":/icons/receiving_addresses"), tr("&Receive coins"), this);
 186     receiveCoinsAction->setToolTip(tr("Show the list of addresses for receiving payments"));
 187     receiveCoinsAction->setCheckable(true);
 188     receiveCoinsAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_3));
 189     tabGroup->addAction(receiveCoinsAction);
 190
 191     sendCoinsAction = new QAction(QIcon(":/icons/send"), tr("&Send coins"), this);
 192     sendCoinsAction->setToolTip(tr("Send coins to a bitcoin address"));
 193     sendCoinsAction->setCheckable(true);
 194     sendCoinsAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_2));
 195     tabGroup->addAction(sendCoinsAction);
 196
 197     connect(overviewAction, SIGNAL(triggered()), this, SLOT(show()));
 198     connect(overviewAction, SIGNAL(triggered()), this, SLOT(gotoOverviewPage()));
 199     connect(historyAction, SIGNAL(triggered()), this, SLOT(show()));
 200     connect(historyAction, SIGNAL(triggered()), this, SLOT(gotoHistoryPage()));
 201     connect(addressBookAction, SIGNAL(triggered()), this, SLOT(show()));
 202     connect(addressBookAction, SIGNAL(triggered()), this, SLOT(gotoAddressBookPage()));
 203     connect(receiveCoinsAction, SIGNAL(triggered()), this, SLOT(show()));
 204     connect(receiveCoinsAction, SIGNAL(triggered()), this, SLOT(gotoReceiveCoinsPage()));
 205     connect(sendCoinsAction, SIGNAL(triggered()), this, SLOT(show()));
 206     connect(sendCoinsAction, SIGNAL(triggered()), this, SLOT(gotoSendCoinsPage()));
 207
 208     quitAction = new QAction(QIcon(":/icons/quit"), tr("E&xit"), this);
 209     quitAction->setToolTip(tr("Quit application"));
 210     quitAction->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q));
 211     quitAction->setMenuRole(QAction::QuitRole);
 212     aboutAction = new QAction(QIcon(":/icons/bitcoin"), tr("&About %1").arg(qApp->applicationName()), this);
 213     aboutAction->setToolTip(tr("Show information about Bitcoin"));
 214     aboutAction->setMenuRole(QAction::AboutRole);
 215     aboutQtAction = new QAction(tr("About &Qt"), this);
 216     aboutQtAction->setToolTip(tr("Show information about Qt"));
 217     aboutQtAction->setMenuRole(QAction::AboutQtRole);
 218     optionsAction = new QAction(QIcon(":/icons/options"), tr("&Options..."), this);
 219     optionsAction->setToolTip(tr("Modify configuration options for bitcoin"));
 220     optionsAction->setMenuRole(QAction::PreferencesRole);
 221     openBitcoinAction = new QAction(QIcon(":/icons/bitcoin"), tr("Open &Bitcoin"), this);
 222     openBitcoinAction->setToolTip(tr("Show the Bitcoin window"));
 223     exportAction = new QAction(QIcon(":/icons/export"), tr("&Export..."), this);
 224     exportAction->setToolTip(tr("Export the current view to a file"));
 225     encryptWalletAction = new QAction(QIcon(":/icons/lock_closed"), tr("&Encrypt Wallet"), this);
 226     encryptWalletAction->setToolTip(tr("Encrypt or decrypt wallet"));
 227     encryptWalletAction->setCheckable(true);
 228     changePassphraseAction = new QAction(QIcon(":/icons/key"), tr("&Change Passphrase"), this);
 229     changePassphraseAction->setToolTip(tr("Change the passphrase used for wallet encryption"));
 230
 231     connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
 232     connect(optionsAction, SIGNAL(triggered()), this, SLOT(optionsClicked()));
 233     connect(aboutAction, SIGNAL(triggered()), this, SLOT(aboutClicked()));
 234     connect(aboutQtAction, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
 235     connect(openBitcoinAction, SIGNAL(triggered()), this, SLOT(showNormal()));
 236     connect(encryptWalletAction, SIGNAL(triggered(bool)), this, SLOT(encryptWallet(bool)));
 237     connect(changePassphraseAction, SIGNAL(triggered()), this, SLOT(changePassphrase()));
 238 }
 239
 240 void BitcoinGUI::createMenuBar()
 241 {
 242 #ifdef Q_WS_MAC
 243     // Create a decoupled menu bar on Mac which stays even if the window is closed
 244     appMenuBar = new QMenuBar();
 245 #else
 246     // Get the main window's menu bar on other platforms
 247     appMenuBar = menuBar();
 248 #endif
 249
 250     // Configure the menus
 251     QMenu *file = appMenuBar->addMenu(tr("&File"));
 252     file->addAction(quitAction);
 253
 254     QMenu *settings = appMenuBar->addMenu(tr("&Settings"));
 255     settings->addAction(encryptWalletAction);
 256     settings->addAction(changePassphraseAction);
 257     settings->addSeparator();
 258     settings->addAction(optionsAction);
 259
 260     QMenu *help = appMenuBar->addMenu(tr("&Help"));
 261     help->addAction(aboutAction);
 262     help->addAction(aboutQtAction);
 263 }
 264
 265 void BitcoinGUI::createToolBars()
 266 {
 267     QToolBar *toolbar = addToolBar(tr("Tabs toolbar"));
 268     toolbar->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 269     toolbar->addAction(overviewAction);
 270     toolbar->addAction(sendCoinsAction);
 271     toolbar->addAction(receiveCoinsAction);
 272     toolbar->addAction(historyAction);
 273     toolbar->addAction(addressBookAction);
 274
 275     QToolBar *toolbar2 = addToolBar(tr("Actions toolbar"));
 276     toolbar2->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 277     toolbar2->addAction(exportAction);
 278 }
 279
 280 void BitcoinGUI::setClientModel(ClientModel *clientModel)
 281 {
 282     this->clientModel = clientModel;
 283     if(clientModel)
 284     {
 285         if(clientModel->isTestNet())
 286         {
 287             QString title_testnet = windowTitle() + QString(" ") + tr("[testnet]");
 288             setWindowTitle(title_testnet);
 289 #ifndef Q_WS_MAC
 290             setWindowIcon(QIcon(":icons/bitcoin_testnet"));
 291 #else
 292             MacDockIconHandler::instance()->setIcon(QIcon(":icons/bitcoin_testnet"));
 293 #endif
 294             if(trayIcon)
 295             {
 296                 trayIcon->setToolTip(title_testnet);
 297                 trayIcon->setIcon(QIcon(":/icons/toolbar_testnet"));
 298             }
 299         }
 300
 301         // Keep up to date with client
 302         setNumConnections(clientModel->getNumConnections());
 303         connect(clientModel, SIGNAL(numConnectionsChanged(int)), this, SLOT(setNumConnections(int)));
 304
 305         setNumBlocks(clientModel->getNumBlocks());
 306         connect(clientModel, SIGNAL(numBlocksChanged(int)), this, SLOT(setNumBlocks(int)));
 307
 308         // Report errors from network/worker thread
 309         connect(clientModel, SIGNAL(error(QString,QString)), this, SLOT(error(QString,QString)));
 310     }
 311 }
 312
 313 void BitcoinGUI::setWalletModel(WalletModel *walletModel)
 314 {
 315     this->walletModel = walletModel;
 316     if(walletModel)
 317     {
 318         // Report errors from wallet thread
 319         connect(walletModel, SIGNAL(error(QString,QString)), this, SLOT(error(QString,QString)));
 320
 321         // Put transaction list in tabs
 322         transactionView->setModel(walletModel);
 323
 324         overviewPage->setModel(walletModel);
 325         addressBookPage->setModel(walletModel->getAddressTableModel());
 326         receiveCoinsPage->setModel(walletModel->getAddressTableModel());
 327         sendCoinsPage->setModel(walletModel);
 328
 329         setEncryptionStatus(walletModel->getEncryptionStatus());
 330         connect(walletModel, SIGNAL(encryptionStatusChanged(int)), this, SLOT(setEncryptionStatus(int)));
 331
 332         // Balloon popup for new transaction
 333         connect(walletModel->getTransactionTableModel(), SIGNAL(rowsInserted(QModelIndex,int,int)),
 334                 this, SLOT(incomingTransaction(QModelIndex,int,int)));
 335
 336         // Ask for passphrase if needed
 337         connect(walletModel, SIGNAL(requireUnlock()), this, SLOT(unlockWallet()));
 338     }
 339 }
 340
 341 void BitcoinGUI::createTrayIcon()
 342 {
 343     QMenu *trayIconMenu;
 344 #ifndef Q_WS_MAC
 345     trayIcon = new QSystemTrayIcon(this);
 346     trayIconMenu = new QMenu(this);
 347     trayIcon->setContextMenu(trayIconMenu);
 348     trayIcon->setToolTip("Bitcoin client");
 349     trayIcon->setIcon(QIcon(":/icons/toolbar"));
 350     connect(trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
 351             this, SLOT(trayIconActivated(QSystemTrayIcon::ActivationReason)));
 352     trayIcon->show();
 353 #else
 354     // Note: On Mac, the dock icon is used to provide the tray's functionality.
 355     MacDockIconHandler *dockIconHandler = MacDockIconHandler::instance();
 356     connect(dockIconHandler, SIGNAL(dockIconClicked()), openBitcoinAction, SLOT(trigger()));
 357     trayIconMenu = dockIconHandler->dockMenu();
 358 #endif
 359
 360     // Configuration of the tray icon (or dock icon) icon menu
 361     trayIconMenu->addAction(openBitcoinAction);
 362     trayIconMenu->addSeparator();
 363     trayIconMenu->addAction(receiveCoinsAction);
 364     trayIconMenu->addAction(sendCoinsAction);
 365     trayIconMenu->addSeparator();
 366     trayIconMenu->addAction(optionsAction);
 367 #ifndef Q_WS_MAC // This is built-in on Mac
 368     trayIconMenu->addSeparator();
 369     trayIconMenu->addAction(quitAction);
 370 #endif
 371
 372     notificator = new Notificator(tr("bitcoin-qt"), trayIcon);
 373 }
 374
 375 #ifndef Q_WS_MAC
 376 void BitcoinGUI::trayIconActivated(QSystemTrayIcon::ActivationReason reason)
 377 {
 378     if(reason == QSystemTrayIcon::Trigger)
 379     {
 380         // Click on system tray icon triggers "open bitcoin"
 381         openBitcoinAction->trigger();
 382     }
 383
 384 }
 385 #endif
 386
 387 void BitcoinGUI::optionsClicked()
 388 {
 389     if(!clientModel || !clientModel->getOptionsModel())
 390         return;
 391     OptionsDialog dlg;
 392     dlg.setModel(clientModel->getOptionsModel());
 393     dlg.exec();
 394 }
 395
 396 void BitcoinGUI::aboutClicked()
 397 {
 398     AboutDialog dlg;
 399     dlg.setModel(clientModel);
 400     dlg.exec();
 401 }
 402
 403 void BitcoinGUI::setNumConnections(int count)
 404 {
 405     QString icon;
 406     switch(count)
 407     {
 408     case 0: icon = ":/icons/connect_0"; break;
 409     case 1: case 2: case 3: icon = ":/icons/connect_1"; break;
 410     case 4: case 5: case 6: icon = ":/icons/connect_2"; break;
 411     case 7: case 8: case 9: icon = ":/icons/connect_3"; break;
 412     default: icon = ":/icons/connect_4"; break;
 413     }
 414     labelConnectionsIcon->setPixmap(QIcon(icon).pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 415     labelConnectionsIcon->setToolTip(tr("%n active connection(s) to Bitcoin network", "", count));
 416 }
 417
 418 void BitcoinGUI::setNumBlocks(int count)
 419 {
 420     if(!clientModel)
 421         return;
 422     int initTotal = clientModel->getNumBlocksAtStartup();
 423     int total = clientModel->getNumBlocksOfPeers();
 424     QString tooltip;
 425
 426     if(count < total)
 427     {
 428         if (clientModel->getStatusBarWarnings() == "")
 429         {
 430             progressBarLabel->setVisible(true);
 431             progressBarLabel->setText(tr("Synchronizing with network..."));
 432             progressBar->setVisible(true);
 433             progressBar->setMaximum(total - initTotal);
 434             progressBar->setValue(count - initTotal);
 435         }
 436         else
 437         {
 438             progressBarLabel->setText(clientModel->getStatusBarWarnings());
 439             progressBarLabel->setVisible(true);
 440             progressBar->setVisible(false);
 441         }
 442         tooltip = tr("Downloaded %1 of %2 blocks of transaction history.").arg(count).arg(total);
 443     }
 444     else
 445     {
 446         if (clientModel->getStatusBarWarnings() == "")
 447             progressBarLabel->setVisible(false);
 448         else
 449         {
 450             progressBarLabel->setText(clientModel->getStatusBarWarnings());
 451             progressBarLabel->setVisible(true);
 452         }
 453         progressBar->setVisible(false);
 454         tooltip = tr("Downloaded %1 blocks of transaction history.").arg(count);
 455     }
 456
 457     QDateTime now = QDateTime::currentDateTime();
 458     QDateTime lastBlockDate = clientModel->getLastBlockDate();
 459     int secs = lastBlockDate.secsTo(now);
 460     QString text;
 461
 462     // Represent time from last generated block in human readable text
 463     if(secs < 60)
 464     {
 465         text = tr("%n second(s) ago","",secs);
 466     }
 467     else if(secs < 60*60)
 468     {
 469         text = tr("%n minute(s) ago","",secs/60);
 470     }
 471     else if(secs < 24*60*60)
 472     {
 473         text = tr("%n hour(s) ago","",secs/(60*60));
 474     }
 475     else
 476     {
 477         text = tr("%n day(s) ago","",secs/(60*60*24));
 478     }
 479
 480     // Set icon state: spinning if catching up, tick otherwise
 481     if(secs < 30*60)
 482     {
 483         tooltip = tr("Up to date") + QString("\n") + tooltip;
 484         labelBlocksIcon->setPixmap(QIcon(":/icons/synced").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 485     }
 486     else
 487     {
 488         tooltip = tr("Catching up...") + QString("\n") + tooltip;
 489         labelBlocksIcon->setMovie(syncIconMovie);
 490         syncIconMovie->start();
 491     }
 492
 493     tooltip += QString("\n");
 494     tooltip += tr("Last received block was generated %1.").arg(text);
 495
 496     labelBlocksIcon->setToolTip(tooltip);
 497     progressBarLabel->setToolTip(tooltip);
 498     progressBar->setToolTip(tooltip);
 499 }
 500
 501 void BitcoinGUI::refreshStatusBar()
 502 {
 503     /* Might display multiple times in the case of multiple alerts
 504     static QString prevStatusBar;
 505     QString newStatusBar = clientModel->getStatusBarWarnings();
 506     if (prevStatusBar != newStatusBar)
 507     {
 508         prevStatusBar = newStatusBar;
 509         error(tr("Network Alert"), newStatusBar);
 510     }*/
 511     setNumBlocks(clientModel->getNumBlocks());
 512 }
 513
 514 void BitcoinGUI::error(const QString &title, const QString &message)
 515 {
 516     // Report errors from network/worker thread
 517     notificator->notify(Notificator::Critical, title, message);
 518 }
 519
 520 void BitcoinGUI::changeEvent(QEvent *e)
 521 {
 522 #ifndef Q_WS_MAC // Ignored on Mac
 523     if(e->type() == QEvent::WindowStateChange)
 524     {
 525         if(clientModel && clientModel->getOptionsModel()->getMinimizeToTray())
 526         {
 527             if(isMinimized())
 528             {
 529                 hide();
 530                 e->ignore();
 531             }
 532             else
 533             {
 534                 show();
 535                 e->accept();
 536             }
 537         }
 538     }
 539 #endif
 540     QMainWindow::changeEvent(e);
 541 }
 542
 543 void BitcoinGUI::closeEvent(QCloseEvent *event)
 544 {
 545     if(clientModel)
 546     {
 547 #ifndef Q_WS_MAC // Ignored on Mac
 548         if(!clientModel->getOptionsModel()->getMinimizeToTray() &&
 549            !clientModel->getOptionsModel()->getMinimizeOnClose())
 550         {
 551             qApp->quit();
 552         }
 553 #endif
 554     }
 555     QMainWindow::closeEvent(event);
 556 }
 557
 558 void BitcoinGUI::askFee(qint64 nFeeRequired, bool *payFee)
 559 {
 560     QString strMessage =
 561         tr("This transaction is over the size limit.  You can still send it for a fee of %1, "
 562           "which goes to the nodes that process your transaction and helps to support the network.  "
 563           "Do you want to pay the fee?").arg(
 564                 BitcoinUnits::formatWithUnit(BitcoinUnits::BTC, nFeeRequired));
 565     QMessageBox::StandardButton retval = QMessageBox::question(
 566           this, tr("Sending..."), strMessage,
 567           QMessageBox::Yes|QMessageBox::Cancel, QMessageBox::Yes);
 568     *payFee = (retval == QMessageBox::Yes);
 569 }
 570
 571 void BitcoinGUI::incomingTransaction(const QModelIndex & parent, int start, int end)
 572 {
 573     if(!walletModel || !clientModel)
 574         return;
 575     TransactionTableModel *ttm = walletModel->getTransactionTableModel();
 576     qint64 amount = ttm->index(start, TransactionTableModel::Amount, parent)
 577                     .data(Qt::EditRole).toULongLong();
 578     if(!clientModel->inInitialBlockDownload())
 579     {
 580         // On new transaction, make an info balloon
 581         // Unless the initial block download is in progress, to prevent balloon-spam
 582         QString date = ttm->index(start, TransactionTableModel::Date, parent)
 583                         .data().toString();
 584         QString type = ttm->index(start, TransactionTableModel::Type, parent)
 585                         .data().toString();
 586         QString address = ttm->index(start, TransactionTableModel::ToAddress, parent)
 587                         .data().toString();
 588         QIcon icon = qvariant_cast<QIcon>(ttm->index(start,
 589                             TransactionTableModel::ToAddress, parent)
 590                         .data(Qt::DecorationRole));
 591
 592         notificator->notify(Notificator::Information,
 593                             (amount)<0 ? tr("Sent transaction") :
 594                                          tr("Incoming transaction"),
 595                               tr("Date: %1\n"
 596                                  "Amount: %2\n"
 597                                  "Type: %3\n"
 598                                  "Address: %4\n")
 599                               .arg(date)
 600                               .arg(BitcoinUnits::formatWithUnit(walletModel->getOptionsModel()->getDisplayUnit(), amount, true))
 601                               .arg(type)
 602                               .arg(address), icon);
 603     }
 604 }
 605
 606 void BitcoinGUI::gotoOverviewPage()
 607 {
 608     overviewAction->setChecked(true);
 609     centralWidget->setCurrentWidget(overviewPage);
 610
 611     exportAction->setEnabled(false);
 612     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 613 }
 614
 615 void BitcoinGUI::gotoHistoryPage()
 616 {
 617     historyAction->setChecked(true);
 618     centralWidget->setCurrentWidget(transactionsPage);
 619
 620     exportAction->setEnabled(true);
 621     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 622     connect(exportAction, SIGNAL(triggered()), transactionView, SLOT(exportClicked()));
 623 }
 624
 625 void BitcoinGUI::gotoAddressBookPage()
 626 {
 627     addressBookAction->setChecked(true);
 628     centralWidget->setCurrentWidget(addressBookPage);
 629
 630     exportAction->setEnabled(true);
 631     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 632     connect(exportAction, SIGNAL(triggered()), addressBookPage, SLOT(exportClicked()));
 633 }
 634
 635 void BitcoinGUI::gotoReceiveCoinsPage()
 636 {
 637     receiveCoinsAction->setChecked(true);
 638     centralWidget->setCurrentWidget(receiveCoinsPage);
 639
 640     exportAction->setEnabled(true);
 641     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 642     connect(exportAction, SIGNAL(triggered()), receiveCoinsPage, SLOT(exportClicked()));
 643 }
 644
 645 void BitcoinGUI::gotoSendCoinsPage()
 646 {
 647     sendCoinsAction->setChecked(true);
 648     centralWidget->setCurrentWidget(sendCoinsPage);
 649
 650     exportAction->setEnabled(false);
 651     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 652 }
 653
 654 void BitcoinGUI::dragEnterEvent(QDragEnterEvent *event)
 655 {
 656     // Accept only URLs
 657     if(event->mimeData()->hasUrls())
 658         event->acceptProposedAction();
 659 }
 660
 661 void BitcoinGUI::dropEvent(QDropEvent *event)
 662 {
 663     if(event->mimeData()->hasUrls())
 664     {
 665         gotoSendCoinsPage();
 666         QList<QUrl> urls = event->mimeData()->urls();
 667         foreach(const QUrl &url, urls)
 668         {
 669             sendCoinsPage->handleURL(&url);
 670         }
 671     }
 672
 673     event->acceptProposedAction();
 674 }
 675
 676 void BitcoinGUI::setEncryptionStatus(int status)
 677 {
 678     switch(status)
 679     {
 680     case WalletModel::Unencrypted:
 681         labelEncryptionIcon->hide();
 682         encryptWalletAction->setChecked(false);
 683         changePassphraseAction->setEnabled(false);
 684         encryptWalletAction->setEnabled(true);
 685         break;
 686     case WalletModel::Unlocked:
 687         labelEncryptionIcon->show();
 688         labelEncryptionIcon->setPixmap(QIcon(":/icons/lock_open").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 689         labelEncryptionIcon->setToolTip(tr("Wallet is <b>encrypted</b> and currently <b>unlocked</b>"));
 690         encryptWalletAction->setChecked(true);
 691         changePassphraseAction->setEnabled(true);
 692         encryptWalletAction->setEnabled(false); // TODO: decrypt currently not supported
 693         break;
 694     case WalletModel::Locked:
 695         labelEncryptionIcon->show();
 696         labelEncryptionIcon->setPixmap(QIcon(":/icons/lock_closed").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 697         labelEncryptionIcon->setToolTip(tr("Wallet is <b>encrypted</b> and currently <b>locked</b>"));
 698         encryptWalletAction->setChecked(true);
 699         changePassphraseAction->setEnabled(true);
 700         encryptWalletAction->setEnabled(false); // TODO: decrypt currently not supported
 701         break;
 702     }
 703 }
 704
 705 void BitcoinGUI::encryptWallet(bool status)
 706 {
 707     if(!walletModel)
 708         return;
 709     AskPassphraseDialog dlg(status ? AskPassphraseDialog::Encrypt:
 710                                      AskPassphraseDialog::Decrypt, this);
 711     dlg.setModel(walletModel);
 712     dlg.exec();
 713
 714     setEncryptionStatus(walletModel->getEncryptionStatus());
 715 }
 716
 717 void BitcoinGUI::changePassphrase()
 718 {
 719     AskPassphraseDialog dlg(AskPassphraseDialog::ChangePass, this);
 720     dlg.setModel(walletModel);
 721     dlg.exec();
 722 }
 723
 724 void BitcoinGUI::unlockWallet()
 725 {
 726     if(!walletModel)
 727         return;
 728     // Unlock wallet when requested by wallet model
 729     if(walletModel->getEncryptionStatus() == WalletModel::Locked)
 730     {
 731         AskPassphraseDialog dlg(AskPassphraseDialog::Unlock, this);
 732         dlg.setModel(walletModel);
 733         dlg.exec();
 734     }
 735 }