src/qt/bitcoingui.cpp

   1 /*
   2  * Qt4 bitcoin GUI.
   3  *
   4  * W.J. van der Laan 20011-2012
   5  * The Bitcoin Developers 20011-2012
   6  */
   7 #include "bitcoingui.h"
   8 #include "transactiontablemodel.h"
   9 #include "addressbookpage.h"
  10 #include "sendcoinsdialog.h"
  11 #include "messagepage.h"
  12 #include "optionsdialog.h"
  13 #include "aboutdialog.h"
  14 #include "clientmodel.h"
  15 #include "walletmodel.h"
  16 #include "editaddressdialog.h"
  17 #include "optionsmodel.h"
  18 #include "transactiondescdialog.h"
  19 #include "addresstablemodel.h"
  20 #include "transactionview.h"
  21 #include "overviewpage.h"
  22 #include "bitcoinunits.h"
  23 #include "guiconstants.h"
  24 #include "askpassphrasedialog.h"
  25 #include "notificator.h"
  26
  27 #ifdef Q_WS_MAC
  28 #include "macdockiconhandler.h"
  29 #endif
  30
  31 #include <QApplication>
  32 #include <QMainWindow>
  33 #include <QMenuBar>
  34 #include <QMenu>
  35 #include <QIcon>
  36 #include <QTabWidget>
  37 #include <QVBoxLayout>
  38 #include <QToolBar>
  39 #include <QStatusBar>
  40 #include <QLabel>
  41 #include <QLineEdit>
  42 #include <QPushButton>
  43 #include <QLocale>
  44 #include <QMessageBox>
  45 #include <QProgressBar>
  46 #include <QStackedWidget>
  47 #include <QDateTime>
  48 #include <QMovie>
  49
  50 #include <QDragEnterEvent>
  51 #include <QUrl>
  52
  53 #include <iostream>
  54
  55 BitcoinGUI::BitcoinGUI(QWidget *parent):
  56     QMainWindow(parent),
  57     clientModel(0),
  58     walletModel(0),
  59     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     messagePage = new MessagePage(this);
 104
 105     centralWidget = new QStackedWidget(this);
 106     centralWidget->addWidget(overviewPage);
 107     centralWidget->addWidget(transactionsPage);
 108     centralWidget->addWidget(addressBookPage);
 109     centralWidget->addWidget(receiveCoinsPage);
 110     centralWidget->addWidget(sendCoinsPage);
 111 #ifdef FIRST_CLASS_MESSAGING
 112     centralWidget->addWidget(messagePage);
 113 #endif
 114     setCentralWidget(centralWidget);
 115
 116     // Create status bar
 117     statusBar();
 118
 119     // Status bar notification icons
 120     QFrame *frameBlocks = new QFrame();
 121     frameBlocks->setContentsMargins(0,0,0,0);
 122     frameBlocks->setMinimumWidth(56);
 123     frameBlocks->setMaximumWidth(56);
 124     QHBoxLayout *frameBlocksLayout = new QHBoxLayout(frameBlocks);
 125     frameBlocksLayout->setContentsMargins(3,0,3,0);
 126     frameBlocksLayout->setSpacing(3);
 127     labelEncryptionIcon = new QLabel();
 128     labelConnectionsIcon = new QLabel();
 129     labelBlocksIcon = new QLabel();
 130     frameBlocksLayout->addStretch();
 131     frameBlocksLayout->addWidget(labelEncryptionIcon);
 132     frameBlocksLayout->addStretch();
 133     frameBlocksLayout->addWidget(labelConnectionsIcon);
 134     frameBlocksLayout->addStretch();
 135     frameBlocksLayout->addWidget(labelBlocksIcon);
 136     frameBlocksLayout->addStretch();
 137
 138     // Progress bar for blocks download
 139     progressBarLabel = new QLabel(tr("Synchronizing with network..."));
 140     progressBarLabel->setVisible(false);
 141     progressBar = new QProgressBar();
 142     progressBar->setToolTip(tr("Block chain synchronization in progress"));
 143     progressBar->setVisible(false);
 144
 145     statusBar()->addWidget(progressBarLabel);
 146     statusBar()->addWidget(progressBar);
 147     statusBar()->addPermanentWidget(frameBlocks);
 148
 149     syncIconMovie = new QMovie(":/movies/update_spinner", "mng", this);
 150
 151     // Clicking on a transaction on the overview page simply sends you to transaction history page
 152     connect(overviewPage, SIGNAL(transactionClicked(QModelIndex)), this, SLOT(gotoHistoryPage()));
 153
 154     // Doubleclicking on a transaction on the transaction history page shows details
 155     connect(transactionView, SIGNAL(doubleClicked(QModelIndex)), transactionView, SLOT(showDetails()));
 156
 157     gotoOverviewPage();
 158 }
 159
 160 BitcoinGUI::~BitcoinGUI()
 161 {
 162 #ifdef Q_WS_MAC
 163     delete appMenuBar;
 164 #endif
 165 }
 166
 167 void BitcoinGUI::createActions()
 168 {
 169     QActionGroup *tabGroup = new QActionGroup(this);
 170
 171     overviewAction = new QAction(QIcon(":/icons/overview"), tr("&Overview"), this);
 172     overviewAction->setToolTip(tr("Show general overview of wallet"));
 173     overviewAction->setCheckable(true);
 174     overviewAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_1));
 175     tabGroup->addAction(overviewAction);
 176
 177     historyAction = new QAction(QIcon(":/icons/history"), tr("&Transactions"), this);
 178     historyAction->setToolTip(tr("Browse transaction history"));
 179     historyAction->setCheckable(true);
 180     historyAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_4));
 181     tabGroup->addAction(historyAction);
 182
 183     addressBookAction = new QAction(QIcon(":/icons/address-book"), tr("&Address Book"), this);
 184     addressBookAction->setToolTip(tr("Edit the list of stored addresses and labels"));
 185     addressBookAction->setCheckable(true);
 186     addressBookAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_5));
 187     tabGroup->addAction(addressBookAction);
 188
 189     receiveCoinsAction = new QAction(QIcon(":/icons/receiving_addresses"), tr("&Receive coins"), this);
 190     receiveCoinsAction->setToolTip(tr("Show the list of addresses for receiving payments"));
 191     receiveCoinsAction->setCheckable(true);
 192     receiveCoinsAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_3));
 193     tabGroup->addAction(receiveCoinsAction);
 194
 195     sendCoinsAction = new QAction(QIcon(":/icons/send"), tr("&Send coins"), this);
 196     sendCoinsAction->setToolTip(tr("Send coins to a bitcoin address"));
 197     sendCoinsAction->setCheckable(true);
 198     sendCoinsAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_2));
 199     tabGroup->addAction(sendCoinsAction);
 200
 201     messageAction = new QAction(QIcon(":/icons/edit"), tr("Sign &message"), this);
 202     messageAction->setToolTip(tr("Prove you control an address"));
 203 #ifdef FIRST_CLASS_MESSAGING
 204     messageAction->setCheckable(true);
 205 #endif
 206     tabGroup->addAction(messageAction);
 207
 208     connect(overviewAction, SIGNAL(triggered()), this, SLOT(showNormal()));
 209     connect(overviewAction, SIGNAL(triggered()), this, SLOT(gotoOverviewPage()));
 210     connect(historyAction, SIGNAL(triggered()), this, SLOT(showNormal()));
 211     connect(historyAction, SIGNAL(triggered()), this, SLOT(gotoHistoryPage()));
 212     connect(addressBookAction, SIGNAL(triggered()), this, SLOT(showNormal()));
 213     connect(addressBookAction, SIGNAL(triggered()), this, SLOT(gotoAddressBookPage()));
 214     connect(receiveCoinsAction, SIGNAL(triggered()), this, SLOT(showNormal()));
 215     connect(receiveCoinsAction, SIGNAL(triggered()), this, SLOT(gotoReceiveCoinsPage()));
 216     connect(sendCoinsAction, SIGNAL(triggered()), this, SLOT(showNormal()));
 217     connect(sendCoinsAction, SIGNAL(triggered()), this, SLOT(gotoSendCoinsPage()));
 218     connect(messageAction, SIGNAL(triggered()), this, SLOT(showNormal()));
 219     connect(messageAction, SIGNAL(triggered()), this, SLOT(gotoMessagePage()));
 220
 221     quitAction = new QAction(QIcon(":/icons/quit"), tr("E&xit"), this);
 222     quitAction->setToolTip(tr("Quit application"));
 223     quitAction->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q));
 224     quitAction->setMenuRole(QAction::QuitRole);
 225     aboutAction = new QAction(QIcon(":/icons/bitcoin"), tr("&About %1").arg(qApp->applicationName()), this);
 226     aboutAction->setToolTip(tr("Show information about Bitcoin"));
 227     aboutAction->setMenuRole(QAction::AboutRole);
 228     aboutQtAction = new QAction(tr("About &Qt"), this);
 229     aboutQtAction->setToolTip(tr("Show information about Qt"));
 230     aboutQtAction->setMenuRole(QAction::AboutQtRole);
 231     optionsAction = new QAction(QIcon(":/icons/options"), tr("&Options..."), this);
 232     optionsAction->setToolTip(tr("Modify configuration options for bitcoin"));
 233     optionsAction->setMenuRole(QAction::PreferencesRole);
 234     openBitcoinAction = new QAction(QIcon(":/icons/bitcoin"), tr("Open &Bitcoin"), this);
 235     openBitcoinAction->setToolTip(tr("Show the Bitcoin window"));
 236     exportAction = new QAction(QIcon(":/icons/export"), tr("&Export..."), this);
 237     exportAction->setToolTip(tr("Export the data in the current tab to a file"));
 238     encryptWalletAction = new QAction(QIcon(":/icons/lock_closed"), tr("&Encrypt Wallet"), this);
 239     encryptWalletAction->setToolTip(tr("Encrypt or decrypt wallet"));
 240     encryptWalletAction->setCheckable(true);
 241     changePassphraseAction = new QAction(QIcon(":/icons/key"), tr("&Change Passphrase"), this);
 242     changePassphraseAction->setToolTip(tr("Change the passphrase used for wallet encryption"));
 243
 244     connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
 245     connect(optionsAction, SIGNAL(triggered()), this, SLOT(optionsClicked()));
 246     connect(aboutAction, SIGNAL(triggered()), this, SLOT(aboutClicked()));
 247     connect(aboutQtAction, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
 248     connect(openBitcoinAction, SIGNAL(triggered()), this, SLOT(showNormal()));
 249     connect(encryptWalletAction, SIGNAL(triggered(bool)), this, SLOT(encryptWallet(bool)));
 250     connect(changePassphraseAction, SIGNAL(triggered()), this, SLOT(changePassphrase()));
 251 }
 252
 253 void BitcoinGUI::createMenuBar()
 254 {
 255 #ifdef Q_WS_MAC
 256     // Create a decoupled menu bar on Mac which stays even if the window is closed
 257     appMenuBar = new QMenuBar();
 258 #else
 259     // Get the main window's menu bar on other platforms
 260     appMenuBar = menuBar();
 261 #endif
 262
 263     // Configure the menus
 264     QMenu *file = appMenuBar->addMenu(tr("&File"));
 265     file->addAction(exportAction);
 266 #ifndef FIRST_CLASS_MESSAGING
 267     file->addAction(messageAction);
 268     file->addSeparator();
 269 #endif
 270     file->addAction(quitAction);
 271
 272     QMenu *settings = appMenuBar->addMenu(tr("&Settings"));
 273     settings->addAction(encryptWalletAction);
 274     settings->addAction(changePassphraseAction);
 275     settings->addSeparator();
 276     settings->addAction(optionsAction);
 277
 278     QMenu *help = appMenuBar->addMenu(tr("&Help"));
 279     help->addAction(aboutAction);
 280     help->addAction(aboutQtAction);
 281 }
 282
 283 void BitcoinGUI::createToolBars()
 284 {
 285     QToolBar *toolbar = addToolBar(tr("Tabs toolbar"));
 286     toolbar->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 287     toolbar->addAction(overviewAction);
 288     toolbar->addAction(sendCoinsAction);
 289     toolbar->addAction(receiveCoinsAction);
 290     toolbar->addAction(historyAction);
 291     toolbar->addAction(addressBookAction);
 292 #ifdef FIRST_CLASS_MESSAGING
 293     toolbar->addAction(messageAction);
 294 #endif
 295
 296     QToolBar *toolbar2 = addToolBar(tr("Actions toolbar"));
 297     toolbar2->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 298     toolbar2->addAction(exportAction);
 299 }
 300
 301 void BitcoinGUI::setClientModel(ClientModel *clientModel)
 302 {
 303     this->clientModel = clientModel;
 304     if(clientModel)
 305     {
 306         if(clientModel->isTestNet())
 307         {
 308             QString title_testnet = windowTitle() + QString(" ") + tr("[testnet]");
 309             setWindowTitle(title_testnet);
 310 #ifndef Q_WS_MAC
 311             setWindowIcon(QIcon(":icons/bitcoin_testnet"));
 312 #else
 313             MacDockIconHandler::instance()->setIcon(QIcon(":icons/bitcoin_testnet"));
 314 #endif
 315             if(trayIcon)
 316             {
 317                 trayIcon->setToolTip(title_testnet);
 318                 trayIcon->setIcon(QIcon(":/icons/toolbar_testnet"));
 319             }
 320         }
 321
 322         // Keep up to date with client
 323         setNumConnections(clientModel->getNumConnections());
 324         connect(clientModel, SIGNAL(numConnectionsChanged(int)), this, SLOT(setNumConnections(int)));
 325
 326         setNumBlocks(clientModel->getNumBlocks());
 327         connect(clientModel, SIGNAL(numBlocksChanged(int)), this, SLOT(setNumBlocks(int)));
 328
 329         // Report errors from network/worker thread
 330         connect(clientModel, SIGNAL(error(QString,QString)), this, SLOT(error(QString,QString)));
 331     }
 332 }
 333
 334 void BitcoinGUI::setWalletModel(WalletModel *walletModel)
 335 {
 336     this->walletModel = walletModel;
 337     if(walletModel)
 338     {
 339         // Report errors from wallet thread
 340         connect(walletModel, SIGNAL(error(QString,QString)), this, SLOT(error(QString,QString)));
 341
 342         // Put transaction list in tabs
 343         transactionView->setModel(walletModel);
 344
 345         overviewPage->setModel(walletModel);
 346         addressBookPage->setModel(walletModel->getAddressTableModel());
 347         receiveCoinsPage->setModel(walletModel->getAddressTableModel());
 348         sendCoinsPage->setModel(walletModel);
 349         messagePage->setModel(walletModel);
 350
 351         setEncryptionStatus(walletModel->getEncryptionStatus());
 352         connect(walletModel, SIGNAL(encryptionStatusChanged(int)), this, SLOT(setEncryptionStatus(int)));
 353
 354         // Balloon popup for new transaction
 355         connect(walletModel->getTransactionTableModel(), SIGNAL(rowsInserted(QModelIndex,int,int)),
 356                 this, SLOT(incomingTransaction(QModelIndex,int,int)));
 357
 358         // Ask for passphrase if needed
 359         connect(walletModel, SIGNAL(requireUnlock()), this, SLOT(unlockWallet()));
 360     }
 361 }
 362
 363 void BitcoinGUI::createTrayIcon()
 364 {
 365     QMenu *trayIconMenu;
 366 #ifndef Q_WS_MAC
 367     trayIcon = new QSystemTrayIcon(this);
 368     trayIconMenu = new QMenu(this);
 369     trayIcon->setContextMenu(trayIconMenu);
 370     trayIcon->setToolTip("Bitcoin client");
 371     trayIcon->setIcon(QIcon(":/icons/toolbar"));
 372     connect(trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
 373             this, SLOT(trayIconActivated(QSystemTrayIcon::ActivationReason)));
 374     trayIcon->show();
 375 #else
 376     // Note: On Mac, the dock icon is used to provide the tray's functionality.
 377     MacDockIconHandler *dockIconHandler = MacDockIconHandler::instance();
 378     connect(dockIconHandler, SIGNAL(dockIconClicked()), openBitcoinAction, SLOT(trigger()));
 379     trayIconMenu = dockIconHandler->dockMenu();
 380 #endif
 381
 382     // Configuration of the tray icon (or dock icon) icon menu
 383     trayIconMenu->addAction(openBitcoinAction);
 384     trayIconMenu->addSeparator();
 385     trayIconMenu->addAction(messageAction);
 386 #ifndef FIRST_CLASS_MESSAGING
 387     trayIconMenu->addSeparator();
 388 #endif
 389     trayIconMenu->addAction(receiveCoinsAction);
 390     trayIconMenu->addAction(sendCoinsAction);
 391     trayIconMenu->addSeparator();
 392     trayIconMenu->addAction(optionsAction);
 393 #ifndef Q_WS_MAC // This is built-in on Mac
 394     trayIconMenu->addSeparator();
 395     trayIconMenu->addAction(quitAction);
 396 #endif
 397
 398     notificator = new Notificator(tr("bitcoin-qt"), trayIcon);
 399 }
 400
 401 #ifndef Q_WS_MAC
 402 void BitcoinGUI::trayIconActivated(QSystemTrayIcon::ActivationReason reason)
 403 {
 404     if(reason == QSystemTrayIcon::Trigger)
 405     {
 406         // Click on system tray icon triggers "open bitcoin"
 407         openBitcoinAction->trigger();
 408     }
 409 }
 410 #endif
 411
 412 void BitcoinGUI::optionsClicked()
 413 {
 414     if(!clientModel || !clientModel->getOptionsModel())
 415         return;
 416     OptionsDialog dlg;
 417     dlg.setModel(clientModel->getOptionsModel());
 418     dlg.exec();
 419 }
 420
 421 void BitcoinGUI::aboutClicked()
 422 {
 423     AboutDialog dlg;
 424     dlg.setModel(clientModel);
 425     dlg.exec();
 426 }
 427
 428 void BitcoinGUI::setNumConnections(int count)
 429 {
 430     QString icon;
 431     switch(count)
 432     {
 433     case 0: icon = ":/icons/connect_0"; break;
 434     case 1: case 2: case 3: icon = ":/icons/connect_1"; break;
 435     case 4: case 5: case 6: icon = ":/icons/connect_2"; break;
 436     case 7: case 8: case 9: icon = ":/icons/connect_3"; break;
 437     default: icon = ":/icons/connect_4"; break;
 438     }
 439     labelConnectionsIcon->setPixmap(QIcon(icon).pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 440     labelConnectionsIcon->setToolTip(tr("%n active connection(s) to Bitcoin network", "", count));
 441 }
 442
 443 void BitcoinGUI::setNumBlocks(int count)
 444 {
 445     if(!clientModel)
 446         return;
 447     int total = clientModel->getNumBlocksOfPeers();
 448     QString tooltip;
 449
 450     if(count < total)
 451     {
 452         if (clientModel->getStatusBarWarnings() == "")
 453         {
 454             progressBarLabel->setVisible(true);
 455             progressBarLabel->setText(tr("Synchronizing with network..."));
 456             progressBar->setVisible(true);
 457             progressBar->setMaximum(total);
 458             progressBar->setValue(count);
 459         }
 460         else
 461         {
 462             progressBarLabel->setText(clientModel->getStatusBarWarnings());
 463             progressBarLabel->setVisible(true);
 464             progressBar->setVisible(false);
 465         }
 466         tooltip = tr("Downloaded %1 of %2 blocks of transaction history.").arg(count).arg(total);
 467     }
 468     else
 469     {
 470         if (clientModel->getStatusBarWarnings() == "")
 471             progressBarLabel->setVisible(false);
 472         else
 473         {
 474             progressBarLabel->setText(clientModel->getStatusBarWarnings());
 475             progressBarLabel->setVisible(true);
 476         }
 477         progressBar->setVisible(false);
 478         tooltip = tr("Downloaded %1 blocks of transaction history.").arg(count);
 479     }
 480
 481     QDateTime now = QDateTime::currentDateTime();
 482     QDateTime lastBlockDate = clientModel->getLastBlockDate();
 483     int secs = lastBlockDate.secsTo(now);
 484     QString text;
 485
 486     // Represent time from last generated block in human readable text
 487     if(secs < 60)
 488     {
 489         text = tr("%n second(s) ago","",secs);
 490     }
 491     else if(secs < 60*60)
 492     {
 493         text = tr("%n minute(s) ago","",secs/60);
 494     }
 495     else if(secs < 24*60*60)
 496     {
 497         text = tr("%n hour(s) ago","",secs/(60*60));
 498     }
 499     else
 500     {
 501         text = tr("%n day(s) ago","",secs/(60*60*24));
 502     }
 503
 504     // Set icon state: spinning if catching up, tick otherwise
 505     if(secs < 30*60)
 506     {
 507         tooltip = tr("Up to date") + QString("\n") + tooltip;
 508         labelBlocksIcon->setPixmap(QIcon(":/icons/synced").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 509     }
 510     else
 511     {
 512         tooltip = tr("Catching up...") + QString("\n") + tooltip;
 513         labelBlocksIcon->setMovie(syncIconMovie);
 514         syncIconMovie->start();
 515     }
 516
 517     tooltip += QString("\n");
 518     tooltip += tr("Last received block was generated %1.").arg(text);
 519
 520     labelBlocksIcon->setToolTip(tooltip);
 521     progressBarLabel->setToolTip(tooltip);
 522     progressBar->setToolTip(tooltip);
 523 }
 524
 525 void BitcoinGUI::refreshStatusBar()
 526 {
 527     /* Might display multiple times in the case of multiple alerts
 528     static QString prevStatusBar;
 529     QString newStatusBar = clientModel->getStatusBarWarnings();
 530     if (prevStatusBar != newStatusBar)
 531     {
 532         prevStatusBar = newStatusBar;
 533         error(tr("Network Alert"), newStatusBar);
 534     }*/
 535     setNumBlocks(clientModel->getNumBlocks());
 536 }
 537
 538 void BitcoinGUI::error(const QString &title, const QString &message)
 539 {
 540     // Report errors from network/worker thread
 541     notificator->notify(Notificator::Critical, title, message);
 542 }
 543
 544 void BitcoinGUI::changeEvent(QEvent *e)
 545 {
 546 #ifndef Q_WS_MAC // Ignored on Mac
 547     if(e->type() == QEvent::WindowStateChange)
 548     {
 549         if(clientModel && clientModel->getOptionsModel()->getMinimizeToTray())
 550         {
 551             QWindowStateChangeEvent *wsevt = static_cast<QWindowStateChangeEvent*>(e);
 552             bool wasMinimized = wsevt->oldState() & Qt::WindowMinimized;
 553             bool isMinimized = windowState() & Qt::WindowMinimized;
 554             if(!wasMinimized && isMinimized)
 555             {
 556                 // Minimized, hide the window from taskbar
 557                 setWindowFlags(windowFlags() | Qt::Tool);
 558                 return;
 559             }
 560             else if(wasMinimized && !isMinimized)
 561             {
 562                 // Unminimized, show the window in taskbar
 563                 setWindowFlags(windowFlags() &~ Qt::Tool);
 564             }
 565         }
 566     }
 567 #endif
 568     QMainWindow::changeEvent(e);
 569 }
 570
 571 void BitcoinGUI::closeEvent(QCloseEvent *event)
 572 {
 573     if(clientModel)
 574     {
 575 #ifndef Q_WS_MAC // Ignored on Mac
 576         if(!clientModel->getOptionsModel()->getMinimizeToTray() &&
 577            !clientModel->getOptionsModel()->getMinimizeOnClose())
 578         {
 579             qApp->quit();
 580         }
 581 #endif
 582     }
 583     QMainWindow::closeEvent(event);
 584 }
 585
 586 void BitcoinGUI::askFee(qint64 nFeeRequired, bool *payFee)
 587 {
 588     QString strMessage =
 589         tr("This transaction is over the size limit.  You can still send it for a fee of %1, "
 590           "which goes to the nodes that process your transaction and helps to support the network.  "
 591           "Do you want to pay the fee?").arg(
 592                 BitcoinUnits::formatWithUnit(BitcoinUnits::BTC, nFeeRequired));
 593     QMessageBox::StandardButton retval = QMessageBox::question(
 594           this, tr("Sending..."), strMessage,
 595           QMessageBox::Yes|QMessageBox::Cancel, QMessageBox::Yes);
 596     *payFee = (retval == QMessageBox::Yes);
 597 }
 598
 599 void BitcoinGUI::incomingTransaction(const QModelIndex & parent, int start, int end)
 600 {
 601     if(!walletModel || !clientModel)
 602         return;
 603     TransactionTableModel *ttm = walletModel->getTransactionTableModel();
 604     qint64 amount = ttm->index(start, TransactionTableModel::Amount, parent)
 605                     .data(Qt::EditRole).toULongLong();
 606     if(!clientModel->inInitialBlockDownload())
 607     {
 608         // On new transaction, make an info balloon
 609         // Unless the initial block download is in progress, to prevent balloon-spam
 610         QString date = ttm->index(start, TransactionTableModel::Date, parent)
 611                         .data().toString();
 612         QString type = ttm->index(start, TransactionTableModel::Type, parent)
 613                         .data().toString();
 614         QString address = ttm->index(start, TransactionTableModel::ToAddress, parent)
 615                         .data().toString();
 616         QIcon icon = qvariant_cast<QIcon>(ttm->index(start,
 617                             TransactionTableModel::ToAddress, parent)
 618                         .data(Qt::DecorationRole));
 619
 620         notificator->notify(Notificator::Information,
 621                             (amount)<0 ? tr("Sent transaction") :
 622                                          tr("Incoming transaction"),
 623                               tr("Date: %1\n"
 624                                  "Amount: %2\n"
 625                                  "Type: %3\n"
 626                                  "Address: %4\n")
 627                               .arg(date)
 628                               .arg(BitcoinUnits::formatWithUnit(walletModel->getOptionsModel()->getDisplayUnit(), amount, true))
 629                               .arg(type)
 630                               .arg(address), icon);
 631     }
 632 }
 633
 634 void BitcoinGUI::gotoOverviewPage()
 635 {
 636     overviewAction->setChecked(true);
 637     centralWidget->setCurrentWidget(overviewPage);
 638
 639     exportAction->setEnabled(false);
 640     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 641 }
 642
 643 void BitcoinGUI::gotoHistoryPage()
 644 {
 645     historyAction->setChecked(true);
 646     centralWidget->setCurrentWidget(transactionsPage);
 647
 648     exportAction->setEnabled(true);
 649     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 650     connect(exportAction, SIGNAL(triggered()), transactionView, SLOT(exportClicked()));
 651 }
 652
 653 void BitcoinGUI::gotoAddressBookPage()
 654 {
 655     addressBookAction->setChecked(true);
 656     centralWidget->setCurrentWidget(addressBookPage);
 657
 658     exportAction->setEnabled(true);
 659     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 660     connect(exportAction, SIGNAL(triggered()), addressBookPage, SLOT(exportClicked()));
 661 }
 662
 663 void BitcoinGUI::gotoReceiveCoinsPage()
 664 {
 665     receiveCoinsAction->setChecked(true);
 666     centralWidget->setCurrentWidget(receiveCoinsPage);
 667
 668     exportAction->setEnabled(true);
 669     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 670     connect(exportAction, SIGNAL(triggered()), receiveCoinsPage, SLOT(exportClicked()));
 671 }
 672
 673 void BitcoinGUI::gotoSendCoinsPage()
 674 {
 675     sendCoinsAction->setChecked(true);
 676     centralWidget->setCurrentWidget(sendCoinsPage);
 677
 678     exportAction->setEnabled(false);
 679     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 680 }
 681
 682 void BitcoinGUI::gotoMessagePage()
 683 {
 684 #ifdef FIRST_CLASS_MESSAGING
 685     messageAction->setChecked(true);
 686     centralWidget->setCurrentWidget(messagePage);
 687
 688     exportAction->setEnabled(false);
 689     disconnect(exportAction, SIGNAL(triggered()), 0, 0);
 690 #else
 691     messagePage->show();
 692     messagePage->setFocus();
 693 #endif
 694 }
 695
 696 void BitcoinGUI::gotoMessagePage(QString addr)
 697 {
 698     gotoMessagePage();
 699     messagePage->setAddress(addr);
 700 }
 701
 702 void BitcoinGUI::dragEnterEvent(QDragEnterEvent *event)
 703 {
 704     // Accept only URLs
 705     if(event->mimeData()->hasUrls())
 706         event->acceptProposedAction();
 707 }
 708
 709 void BitcoinGUI::dropEvent(QDropEvent *event)
 710 {
 711     if(event->mimeData()->hasUrls())
 712     {
 713         gotoSendCoinsPage();
 714         QList<QUrl> urls = event->mimeData()->urls();
 715         foreach(const QUrl &url, urls)
 716         {
 717             sendCoinsPage->handleURL(&url);
 718         }
 719     }
 720
 721     event->acceptProposedAction();
 722 }
 723
 724 void BitcoinGUI::handleURL(QString strURL)
 725 {
 726     gotoSendCoinsPage();
 727     QUrl url = QUrl(strURL);
 728     sendCoinsPage->handleURL(&url);
 729 }
 730
 731 void BitcoinGUI::setEncryptionStatus(int status)
 732 {
 733     switch(status)
 734     {
 735     case WalletModel::Unencrypted:
 736         labelEncryptionIcon->hide();
 737         encryptWalletAction->setChecked(false);
 738         changePassphraseAction->setEnabled(false);
 739         encryptWalletAction->setEnabled(true);
 740         break;
 741     case WalletModel::Unlocked:
 742         labelEncryptionIcon->show();
 743         labelEncryptionIcon->setPixmap(QIcon(":/icons/lock_open").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 744         labelEncryptionIcon->setToolTip(tr("Wallet is <b>encrypted</b> and currently <b>unlocked</b>"));
 745         encryptWalletAction->setChecked(true);
 746         changePassphraseAction->setEnabled(true);
 747         encryptWalletAction->setEnabled(false); // TODO: decrypt currently not supported
 748         break;
 749     case WalletModel::Locked:
 750         labelEncryptionIcon->show();
 751         labelEncryptionIcon->setPixmap(QIcon(":/icons/lock_closed").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
 752         labelEncryptionIcon->setToolTip(tr("Wallet is <b>encrypted</b> and currently <b>locked</b>"));
 753         encryptWalletAction->setChecked(true);
 754         changePassphraseAction->setEnabled(true);
 755         encryptWalletAction->setEnabled(false); // TODO: decrypt currently not supported
 756         break;
 757     }
 758 }
 759
 760 void BitcoinGUI::encryptWallet(bool status)
 761 {
 762     if(!walletModel)
 763         return;
 764     AskPassphraseDialog dlg(status ? AskPassphraseDialog::Encrypt:
 765                                      AskPassphraseDialog::Decrypt, this);
 766     dlg.setModel(walletModel);
 767     dlg.exec();
 768
 769     setEncryptionStatus(walletModel->getEncryptionStatus());
 770 }
 771
 772 void BitcoinGUI::changePassphrase()
 773 {
 774     AskPassphraseDialog dlg(AskPassphraseDialog::ChangePass, this);
 775     dlg.setModel(walletModel);
 776     dlg.exec();
 777 }
 778
 779 void BitcoinGUI::unlockWallet()
 780 {
 781     if(!walletModel)
 782         return;
 783     // Unlock wallet when requested by wallet model
 784     if(walletModel->getEncryptionStatus() == WalletModel::Locked)
 785     {
 786         AskPassphraseDialog dlg(AskPassphraseDialog::Unlock, this);
 787         dlg.setModel(walletModel);
 788         dlg.exec();
 789     }
 790 }