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bitcoin-bitcoin-core/src/qt/sendcoinsdialog.cpp
Sjors Provoost 026b5b4523
move-only: helper function to present PSBT 
This commit does not change behavior.

Review hint:
git show --color-moved --color-moved-ws=allow-indentation-change
2022-02-24 12:41:47 +01:00

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// Copyright (c) 2011-2021 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#if defined(HAVE_CONFIG_H)
#include <config/bitcoin-config.h>
#endif
#include <qt/sendcoinsdialog.h>
#include <qt/forms/ui_sendcoinsdialog.h>
#include <qt/addresstablemodel.h>
#include <qt/bitcoinunits.h>
#include <qt/clientmodel.h>
#include <qt/coincontroldialog.h>
#include <qt/guiutil.h>
#include <qt/optionsmodel.h>
#include <qt/platformstyle.h>
#include <qt/sendcoinsentry.h>
#include <chainparams.h>
#include <interfaces/node.h>
#include <key_io.h>
#include <node/ui_interface.h>
#include <policy/fees.h>
#include <txmempool.h>
#include <validation.h>
#include <wallet/coincontrol.h>
#include <wallet/fees.h>
#include <wallet/wallet.h>
#include <array>
#include <chrono>
#include <fstream>
#include <memory>
#include <QFontMetrics>
#include <QScrollBar>
#include <QSettings>
#include <QTextDocument>
using wallet::CCoinControl;
using wallet::DEFAULT_PAY_TX_FEE;
static constexpr std::array confTargets{2, 4, 6, 12, 24, 48, 144, 504, 1008};
int getConfTargetForIndex(int index) {
if (index+1 > static_cast<int>(confTargets.size())) {
return confTargets.back();
}
if (index < 0) {
return confTargets[0];
}
return confTargets[index];
}
int getIndexForConfTarget(int target) {
for (unsigned int i = 0; i < confTargets.size(); i++) {
if (confTargets[i] >= target) {
return i;
}
}
return confTargets.size() - 1;
}
SendCoinsDialog::SendCoinsDialog(const PlatformStyle *_platformStyle, QWidget *parent) :
QDialog(parent, GUIUtil::dialog_flags),
ui(new Ui::SendCoinsDialog),
clientModel(nullptr),
model(nullptr),
m_coin_control(new CCoinControl),
fNewRecipientAllowed(true),
fFeeMinimized(true),
platformStyle(_platformStyle)
{
ui->setupUi(this);
if (!_platformStyle->getImagesOnButtons()) {
ui->addButton->setIcon(QIcon());
ui->clearButton->setIcon(QIcon());
ui->sendButton->setIcon(QIcon());
} else {
ui->addButton->setIcon(_platformStyle->SingleColorIcon(":/icons/add"));
ui->clearButton->setIcon(_platformStyle->SingleColorIcon(":/icons/remove"));
ui->sendButton->setIcon(_platformStyle->SingleColorIcon(":/icons/send"));
}
GUIUtil::setupAddressWidget(ui->lineEditCoinControlChange, this);
addEntry();
connect(ui->addButton, &QPushButton::clicked, this, &SendCoinsDialog::addEntry);
connect(ui->clearButton, &QPushButton::clicked, this, &SendCoinsDialog::clear);
// Coin Control
connect(ui->pushButtonCoinControl, &QPushButton::clicked, this, &SendCoinsDialog::coinControlButtonClicked);
connect(ui->checkBoxCoinControlChange, &QCheckBox::stateChanged, this, &SendCoinsDialog::coinControlChangeChecked);
connect(ui->lineEditCoinControlChange, &QValidatedLineEdit::textEdited, this, &SendCoinsDialog::coinControlChangeEdited);
// Coin Control: clipboard actions
QAction *clipboardQuantityAction = new QAction(tr("Copy quantity"), this);
QAction *clipboardAmountAction = new QAction(tr("Copy amount"), this);
QAction *clipboardFeeAction = new QAction(tr("Copy fee"), this);
QAction *clipboardAfterFeeAction = new QAction(tr("Copy after fee"), this);
QAction *clipboardBytesAction = new QAction(tr("Copy bytes"), this);
QAction *clipboardLowOutputAction = new QAction(tr("Copy dust"), this);
QAction *clipboardChangeAction = new QAction(tr("Copy change"), this);
connect(clipboardQuantityAction, &QAction::triggered, this, &SendCoinsDialog::coinControlClipboardQuantity);
connect(clipboardAmountAction, &QAction::triggered, this, &SendCoinsDialog::coinControlClipboardAmount);
connect(clipboardFeeAction, &QAction::triggered, this, &SendCoinsDialog::coinControlClipboardFee);
connect(clipboardAfterFeeAction, &QAction::triggered, this, &SendCoinsDialog::coinControlClipboardAfterFee);
connect(clipboardBytesAction, &QAction::triggered, this, &SendCoinsDialog::coinControlClipboardBytes);
connect(clipboardLowOutputAction, &QAction::triggered, this, &SendCoinsDialog::coinControlClipboardLowOutput);
connect(clipboardChangeAction, &QAction::triggered, this, &SendCoinsDialog::coinControlClipboardChange);
ui->labelCoinControlQuantity->addAction(clipboardQuantityAction);
ui->labelCoinControlAmount->addAction(clipboardAmountAction);
ui->labelCoinControlFee->addAction(clipboardFeeAction);
ui->labelCoinControlAfterFee->addAction(clipboardAfterFeeAction);
ui->labelCoinControlBytes->addAction(clipboardBytesAction);
ui->labelCoinControlLowOutput->addAction(clipboardLowOutputAction);
ui->labelCoinControlChange->addAction(clipboardChangeAction);
// init transaction fee section
QSettings settings;
if (!settings.contains("fFeeSectionMinimized"))
settings.setValue("fFeeSectionMinimized", true);
if (!settings.contains("nFeeRadio") && settings.contains("nTransactionFee") && settings.value("nTransactionFee").toLongLong() > 0) // compatibility
settings.setValue("nFeeRadio", 1); // custom
if (!settings.contains("nFeeRadio"))
settings.setValue("nFeeRadio", 0); // recommended
if (!settings.contains("nSmartFeeSliderPosition"))
settings.setValue("nSmartFeeSliderPosition", 0);
if (!settings.contains("nTransactionFee"))
settings.setValue("nTransactionFee", (qint64)DEFAULT_PAY_TX_FEE);
ui->groupFee->setId(ui->radioSmartFee, 0);
ui->groupFee->setId(ui->radioCustomFee, 1);
ui->groupFee->button((int)std::max(0, std::min(1, settings.value("nFeeRadio").toInt())))->setChecked(true);
ui->customFee->SetAllowEmpty(false);
ui->customFee->setValue(settings.value("nTransactionFee").toLongLong());
minimizeFeeSection(settings.value("fFeeSectionMinimized").toBool());
GUIUtil::ExceptionSafeConnect(ui->sendButton, &QPushButton::clicked, this, &SendCoinsDialog::sendButtonClicked);
}
void SendCoinsDialog::setClientModel(ClientModel *_clientModel)
{
this->clientModel = _clientModel;
if (_clientModel) {
connect(_clientModel, &ClientModel::numBlocksChanged, this, &SendCoinsDialog::updateNumberOfBlocks);
}
}
void SendCoinsDialog::setModel(WalletModel *_model)
{
this->model = _model;
if(_model && _model->getOptionsModel())
{
for(int i = 0; i < ui->entries->count(); ++i)
{
SendCoinsEntry *entry = qobject_cast<SendCoinsEntry*>(ui->entries->itemAt(i)->widget());
if(entry)
{
entry->setModel(_model);
}
}
interfaces::WalletBalances balances = _model->wallet().getBalances();
setBalance(balances);
connect(_model, &WalletModel::balanceChanged, this, &SendCoinsDialog::setBalance);
connect(_model->getOptionsModel(), &OptionsModel::displayUnitChanged, this, &SendCoinsDialog::updateDisplayUnit);
updateDisplayUnit();
// Coin Control
connect(_model->getOptionsModel(), &OptionsModel::displayUnitChanged, this, &SendCoinsDialog::coinControlUpdateLabels);
connect(_model->getOptionsModel(), &OptionsModel::coinControlFeaturesChanged, this, &SendCoinsDialog::coinControlFeatureChanged);
ui->frameCoinControl->setVisible(_model->getOptionsModel()->getCoinControlFeatures());
coinControlUpdateLabels();
// fee section
for (const int n : confTargets) {
ui->confTargetSelector->addItem(tr("%1 (%2 blocks)").arg(GUIUtil::formatNiceTimeOffset(n*Params().GetConsensus().nPowTargetSpacing)).arg(n));
}
connect(ui->confTargetSelector, qOverload<int>(&QComboBox::currentIndexChanged), this, &SendCoinsDialog::updateSmartFeeLabel);
connect(ui->confTargetSelector, qOverload<int>(&QComboBox::currentIndexChanged), this, &SendCoinsDialog::coinControlUpdateLabels);
#if (QT_VERSION >= QT_VERSION_CHECK(5, 15, 0))
connect(ui->groupFee, &QButtonGroup::idClicked, this, &SendCoinsDialog::updateFeeSectionControls);
connect(ui->groupFee, &QButtonGroup::idClicked, this, &SendCoinsDialog::coinControlUpdateLabels);
#else
connect(ui->groupFee, qOverload<int>(&QButtonGroup::buttonClicked), this, &SendCoinsDialog::updateFeeSectionControls);
connect(ui->groupFee, qOverload<int>(&QButtonGroup::buttonClicked), this, &SendCoinsDialog::coinControlUpdateLabels);
#endif
connect(ui->customFee, &BitcoinAmountField::valueChanged, this, &SendCoinsDialog::coinControlUpdateLabels);
connect(ui->optInRBF, &QCheckBox::stateChanged, this, &SendCoinsDialog::updateSmartFeeLabel);
connect(ui->optInRBF, &QCheckBox::stateChanged, this, &SendCoinsDialog::coinControlUpdateLabels);
CAmount requiredFee = model->wallet().getRequiredFee(1000);
ui->customFee->SetMinValue(requiredFee);
if (ui->customFee->value() < requiredFee) {
ui->customFee->setValue(requiredFee);
}
ui->customFee->setSingleStep(requiredFee);
updateFeeSectionControls();
updateSmartFeeLabel();
// set default rbf checkbox state
ui->optInRBF->setCheckState(Qt::Checked);
if (model->wallet().hasExternalSigner()) {
//: "device" usually means a hardware wallet.
ui->sendButton->setText(tr("Sign on device"));
if (gArgs.GetArg("-signer", "") != "") {
ui->sendButton->setEnabled(true);
ui->sendButton->setToolTip(tr("Connect your hardware wallet first."));
} else {
ui->sendButton->setEnabled(false);
//: "External signer" means using devices such as hardware wallets.
ui->sendButton->setToolTip(tr("Set external signer script path in Options -> Wallet"));
}
} else if (model->wallet().privateKeysDisabled()) {
ui->sendButton->setText(tr("Cr&eate Unsigned"));
ui->sendButton->setToolTip(tr("Creates a Partially Signed Bitcoin Transaction (PSBT) for use with e.g. an offline %1 wallet, or a PSBT-compatible hardware wallet.").arg(PACKAGE_NAME));
}
// set the smartfee-sliders default value (wallets default conf.target or last stored value)
QSettings settings;
if (settings.value("nSmartFeeSliderPosition").toInt() != 0) {
// migrate nSmartFeeSliderPosition to nConfTarget
// nConfTarget is available since 0.15 (replaced nSmartFeeSliderPosition)
int nConfirmTarget = 25 - settings.value("nSmartFeeSliderPosition").toInt(); // 25 == old slider range
settings.setValue("nConfTarget", nConfirmTarget);
settings.remove("nSmartFeeSliderPosition");
}
if (settings.value("nConfTarget").toInt() == 0)
ui->confTargetSelector->setCurrentIndex(getIndexForConfTarget(model->wallet().getConfirmTarget()));
else
ui->confTargetSelector->setCurrentIndex(getIndexForConfTarget(settings.value("nConfTarget").toInt()));
}
}
SendCoinsDialog::~SendCoinsDialog()
{
QSettings settings;
settings.setValue("fFeeSectionMinimized", fFeeMinimized);
settings.setValue("nFeeRadio", ui->groupFee->checkedId());
settings.setValue("nConfTarget", getConfTargetForIndex(ui->confTargetSelector->currentIndex()));
settings.setValue("nTransactionFee", (qint64)ui->customFee->value());
delete ui;
}
bool SendCoinsDialog::PrepareSendText(QString& question_string, QString& informative_text, QString& detailed_text)
{
QList<SendCoinsRecipient> recipients;
bool valid = true;
for(int i = 0; i < ui->entries->count(); ++i)
{
SendCoinsEntry *entry = qobject_cast<SendCoinsEntry*>(ui->entries->itemAt(i)->widget());
if(entry)
{
if(entry->validate(model->node()))
{
recipients.append(entry->getValue());
}
else if (valid)
{
ui->scrollArea->ensureWidgetVisible(entry);
valid = false;
}
}
}
if(!valid || recipients.isEmpty())
{
return false;
}
fNewRecipientAllowed = false;
WalletModel::UnlockContext ctx(model->requestUnlock());
if(!ctx.isValid())
{
// Unlock wallet was cancelled
fNewRecipientAllowed = true;
return false;
}
// prepare transaction for getting txFee earlier
m_current_transaction = std::make_unique<WalletModelTransaction>(recipients);
WalletModel::SendCoinsReturn prepareStatus;
updateCoinControlState();
prepareStatus = model->prepareTransaction(*m_current_transaction, *m_coin_control);
// process prepareStatus and on error generate message shown to user
processSendCoinsReturn(prepareStatus,
BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(), m_current_transaction->getTransactionFee()));
if(prepareStatus.status != WalletModel::OK) {
fNewRecipientAllowed = true;
return false;
}
CAmount txFee = m_current_transaction->getTransactionFee();
QStringList formatted;
for (const SendCoinsRecipient &rcp : m_current_transaction->getRecipients())
{
// generate amount string with wallet name in case of multiwallet
QString amount = BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(), rcp.amount);
if (model->isMultiwallet()) {
amount.append(tr(" from wallet '%1'").arg(GUIUtil::HtmlEscape(model->getWalletName())));
}
// generate address string
QString address = rcp.address;
QString recipientElement;
{
if(rcp.label.length() > 0) // label with address
{
recipientElement.append(tr("%1 to '%2'").arg(amount, GUIUtil::HtmlEscape(rcp.label)));
recipientElement.append(QString(" (%1)").arg(address));
}
else // just address
{
recipientElement.append(tr("%1 to %2").arg(amount, address));
}
}
formatted.append(recipientElement);
}
/*: Message displayed when attempting to create a transaction. Cautionary text to prompt the user to verify
that the displayed transaction details represent the transaction the user intends to create. */
question_string.append(tr("Do you want to create this transaction?"));
question_string.append("<br /><span style='font-size:10pt;'>");
if (model->wallet().privateKeysDisabled() && !model->wallet().hasExternalSigner()) {
/*: Text to inform a user attempting to create a transaction of their current options. At this stage,
a user can only create a PSBT. This string is displayed when private keys are disabled and an external
signer is not available. */
question_string.append(tr("Please, review your transaction proposal. This will produce a Partially Signed Bitcoin Transaction (PSBT) which you can save or copy and then sign with e.g. an offline %1 wallet, or a PSBT-compatible hardware wallet.").arg(PACKAGE_NAME));
} else if (model->getOptionsModel()->getEnablePSBTControls()) {
/*: Text to inform a user attempting to create a transaction of their current options. At this stage,
a user can send their transaction or create a PSBT. This string is displayed when both private keys
and PSBT controls are enabled. */
question_string.append(tr("Please, review your transaction. You can create and send this transaction or create a Partially Signed Bitcoin Transaction (PSBT), which you can save or copy and then sign with, e.g., an offline %1 wallet, or a PSBT-compatible hardware wallet.").arg(PACKAGE_NAME));
} else {
/*: Text to prompt a user to review the details of the transaction they are attempting to send. */
question_string.append(tr("Please, review your transaction."));
}
question_string.append("</span>%1");
if(txFee > 0)
{
// append fee string if a fee is required
question_string.append("<hr /><b>");
question_string.append(tr("Transaction fee"));
question_string.append("</b>");
// append transaction size
question_string.append(" (" + QString::number((double)m_current_transaction->getTransactionSize() / 1000) + " kB): ");
// append transaction fee value
question_string.append("<span style='color:#aa0000; font-weight:bold;'>");
question_string.append(BitcoinUnits::formatHtmlWithUnit(model->getOptionsModel()->getDisplayUnit(), txFee));
question_string.append("</span><br />");
// append RBF message according to transaction's signalling
question_string.append("<span style='font-size:10pt; font-weight:normal;'>");
if (ui->optInRBF->isChecked()) {
question_string.append(tr("You can increase the fee later (signals Replace-By-Fee, BIP-125)."));
} else {
question_string.append(tr("Not signalling Replace-By-Fee, BIP-125."));
}
question_string.append("</span>");
}
// add total amount in all subdivision units
question_string.append("<hr />");
CAmount totalAmount = m_current_transaction->getTotalTransactionAmount() + txFee;
QStringList alternativeUnits;
for (const BitcoinUnits::Unit u : BitcoinUnits::availableUnits())
{
if(u != model->getOptionsModel()->getDisplayUnit())
alternativeUnits.append(BitcoinUnits::formatHtmlWithUnit(u, totalAmount));
}
question_string.append(QString("<b>%1</b>: <b>%2</b>").arg(tr("Total Amount"))
.arg(BitcoinUnits::formatHtmlWithUnit(model->getOptionsModel()->getDisplayUnit(), totalAmount)));
question_string.append(QString("<br /><span style='font-size:10pt; font-weight:normal;'>(=%1)</span>")
.arg(alternativeUnits.join(" " + tr("or") + " ")));
if (formatted.size() > 1) {
question_string = question_string.arg("");
informative_text = tr("To review recipient list click \"Show Details…\"");
detailed_text = formatted.join("\n\n");
} else {
question_string = question_string.arg("<br /><br />" + formatted.at(0));
}
return true;
}
void SendCoinsDialog::presentPSBT(PartiallySignedTransaction& psbtx)
{
// Serialize the PSBT
CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
ssTx << psbtx;
GUIUtil::setClipboard(EncodeBase64(ssTx.str()).c_str());
QMessageBox msgBox;
msgBox.setText("Unsigned Transaction");
msgBox.setInformativeText("The PSBT has been copied to the clipboard. You can also save it.");
msgBox.setStandardButtons(QMessageBox::Save | QMessageBox::Discard);
msgBox.setDefaultButton(QMessageBox::Discard);
switch (msgBox.exec()) {
case QMessageBox::Save: {
QString selectedFilter;
QString fileNameSuggestion = "";
bool first = true;
for (const SendCoinsRecipient &rcp : m_current_transaction->getRecipients()) {
if (!first) {
fileNameSuggestion.append(" - ");
}
QString labelOrAddress = rcp.label.isEmpty() ? rcp.address : rcp.label;
QString amount = BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(), rcp.amount);
fileNameSuggestion.append(labelOrAddress + "-" + amount);
first = false;
}
fileNameSuggestion.append(".psbt");
QString filename = GUIUtil::getSaveFileName(this,
tr("Save Transaction Data"), fileNameSuggestion,
//: Expanded name of the binary PSBT file format. See: BIP 174.
tr("Partially Signed Transaction (Binary)") + QLatin1String(" (*.psbt)"), &selectedFilter);
if (filename.isEmpty()) {
return;
}
std::ofstream out{filename.toLocal8Bit().data(), std::ofstream::out | std::ofstream::binary};
out << ssTx.str();
out.close();
Q_EMIT message(tr("PSBT saved"), "PSBT saved to disk", CClientUIInterface::MSG_INFORMATION);
break;
}
case QMessageBox::Discard:
break;
default:
assert(false);
} // msgBox.exec()
}
void SendCoinsDialog::sendButtonClicked([[maybe_unused]] bool checked)
{
if(!model || !model->getOptionsModel())
return;
QString question_string, informative_text, detailed_text;
if (!PrepareSendText(question_string, informative_text, detailed_text)) return;
assert(m_current_transaction);
const QString confirmation = tr("Confirm send coins");
auto confirmationDialog = new SendConfirmationDialog(confirmation, question_string, informative_text, detailed_text, SEND_CONFIRM_DELAY, !model->wallet().privateKeysDisabled(), model->getOptionsModel()->getEnablePSBTControls(), this);
confirmationDialog->setAttribute(Qt::WA_DeleteOnClose);
// TODO: Replace QDialog::exec() with safer QDialog::show().
const auto retval = static_cast<QMessageBox::StandardButton>(confirmationDialog->exec());
if(retval != QMessageBox::Yes && retval != QMessageBox::Save)
{
fNewRecipientAllowed = true;
return;
}
bool send_failure = false;
if (retval == QMessageBox::Save) {
CMutableTransaction mtx = CMutableTransaction{*(m_current_transaction->getWtx())};
PartiallySignedTransaction psbtx(mtx);
bool complete = false;
// Always fill without signing first. This prevents an external signer
// from being called prematurely and is not expensive.
TransactionError err = model->wallet().fillPSBT(SIGHASH_ALL, false /* sign */, true /* bip32derivs */, nullptr, psbtx, complete);
assert(!complete);
assert(err == TransactionError::OK);
if (model->wallet().hasExternalSigner()) {
try {
err = model->wallet().fillPSBT(SIGHASH_ALL, true /* sign */, true /* bip32derivs */, nullptr, psbtx, complete);
} catch (const std::runtime_error& e) {
QMessageBox::critical(nullptr, tr("Sign failed"), e.what());
send_failure = true;
return;
}
if (err == TransactionError::EXTERNAL_SIGNER_NOT_FOUND) {
//: "External signer" means using devices such as hardware wallets.
QMessageBox::critical(nullptr, tr("External signer not found"), "External signer not found");
send_failure = true;
return;
}
if (err == TransactionError::EXTERNAL_SIGNER_FAILED) {
//: "External signer" means using devices such as hardware wallets.
QMessageBox::critical(nullptr, tr("External signer failure"), "External signer failure");
send_failure = true;
return;
}
if (err != TransactionError::OK) {
tfm::format(std::cerr, "Failed to sign PSBT");
processSendCoinsReturn(WalletModel::TransactionCreationFailed);
send_failure = true;
return;
}
// fillPSBT does not always properly finalize
complete = FinalizeAndExtractPSBT(psbtx, mtx);
}
// Broadcast transaction if complete (even with an external signer this
// is not always the case, e.g. in a multisig wallet).
if (complete) {
const CTransactionRef tx = MakeTransactionRef(mtx);
m_current_transaction->setWtx(tx);
WalletModel::SendCoinsReturn sendStatus = model->sendCoins(*m_current_transaction);
// process sendStatus and on error generate message shown to user
processSendCoinsReturn(sendStatus);
if (sendStatus.status == WalletModel::OK) {
Q_EMIT coinsSent(m_current_transaction->getWtx()->GetHash());
} else {
send_failure = true;
}
return;
}
// Copy PSBT to clipboard and offer to save
assert(!complete);
presentPSBT(psbtx);
} else {
assert(!model->wallet().privateKeysDisabled());
// now send the prepared transaction
WalletModel::SendCoinsReturn sendStatus = model->sendCoins(*m_current_transaction);
// process sendStatus and on error generate message shown to user
processSendCoinsReturn(sendStatus);
if (sendStatus.status == WalletModel::OK) {
Q_EMIT coinsSent(m_current_transaction->getWtx()->GetHash());
} else {
send_failure = true;
}
}
if (!send_failure) {
accept();
m_coin_control->UnSelectAll();
coinControlUpdateLabels();
}
fNewRecipientAllowed = true;
m_current_transaction.reset();
}
void SendCoinsDialog::clear()
{
m_current_transaction.reset();
// Clear coin control settings
m_coin_control->UnSelectAll();
ui->checkBoxCoinControlChange->setChecked(false);
ui->lineEditCoinControlChange->clear();
coinControlUpdateLabels();
// Remove entries until only one left
while(ui->entries->count())
{
ui->entries->takeAt(0)->widget()->deleteLater();
}
addEntry();
updateTabsAndLabels();
}
void SendCoinsDialog::reject()
{
clear();
}
void SendCoinsDialog::accept()
{
clear();
}
SendCoinsEntry *SendCoinsDialog::addEntry()
{
SendCoinsEntry *entry = new SendCoinsEntry(platformStyle, this);
entry->setModel(model);
ui->entries->addWidget(entry);
connect(entry, &SendCoinsEntry::removeEntry, this, &SendCoinsDialog::removeEntry);
connect(entry, &SendCoinsEntry::useAvailableBalance, this, &SendCoinsDialog::useAvailableBalance);
connect(entry, &SendCoinsEntry::payAmountChanged, this, &SendCoinsDialog::coinControlUpdateLabels);
connect(entry, &SendCoinsEntry::subtractFeeFromAmountChanged, this, &SendCoinsDialog::coinControlUpdateLabels);
// Focus the field, so that entry can start immediately
entry->clear();
entry->setFocus();
ui->scrollAreaWidgetContents->resize(ui->scrollAreaWidgetContents->sizeHint());
qApp->processEvents();
QScrollBar* bar = ui->scrollArea->verticalScrollBar();
if(bar)
bar->setSliderPosition(bar->maximum());
updateTabsAndLabels();
return entry;
}
void SendCoinsDialog::updateTabsAndLabels()
{
setupTabChain(nullptr);
coinControlUpdateLabels();
}
void SendCoinsDialog::removeEntry(SendCoinsEntry* entry)
{
entry->hide();
// If the last entry is about to be removed add an empty one
if (ui->entries->count() == 1)
addEntry();
entry->deleteLater();
updateTabsAndLabels();
}
QWidget *SendCoinsDialog::setupTabChain(QWidget *prev)
{
for(int i = 0; i < ui->entries->count(); ++i)
{
SendCoinsEntry *entry = qobject_cast<SendCoinsEntry*>(ui->entries->itemAt(i)->widget());
if(entry)
{
prev = entry->setupTabChain(prev);
}
}
QWidget::setTabOrder(prev, ui->sendButton);
QWidget::setTabOrder(ui->sendButton, ui->clearButton);
QWidget::setTabOrder(ui->clearButton, ui->addButton);
return ui->addButton;
}
void SendCoinsDialog::setAddress(const QString &address)
{
SendCoinsEntry *entry = nullptr;
// Replace the first entry if it is still unused
if(ui->entries->count() == 1)
{
SendCoinsEntry *first = qobject_cast<SendCoinsEntry*>(ui->entries->itemAt(0)->widget());
if(first->isClear())
{
entry = first;
}
}
if(!entry)
{
entry = addEntry();
}
entry->setAddress(address);
}
void SendCoinsDialog::pasteEntry(const SendCoinsRecipient &rv)
{
if(!fNewRecipientAllowed)
return;
SendCoinsEntry *entry = nullptr;
// Replace the first entry if it is still unused
if(ui->entries->count() == 1)
{
SendCoinsEntry *first = qobject_cast<SendCoinsEntry*>(ui->entries->itemAt(0)->widget());
if(first->isClear())
{
entry = first;
}
}
if(!entry)
{
entry = addEntry();
}
entry->setValue(rv);
updateTabsAndLabels();
}
bool SendCoinsDialog::handlePaymentRequest(const SendCoinsRecipient &rv)
{
// Just paste the entry, all pre-checks
// are done in paymentserver.cpp.
pasteEntry(rv);
return true;
}
void SendCoinsDialog::setBalance(const interfaces::WalletBalances& balances)
{
if(model && model->getOptionsModel())
{
CAmount balance = balances.balance;
if (model->wallet().hasExternalSigner()) {
ui->labelBalanceName->setText(tr("External balance:"));
} else if (model->wallet().privateKeysDisabled()) {
balance = balances.watch_only_balance;
ui->labelBalanceName->setText(tr("Watch-only balance:"));
}
ui->labelBalance->setText(BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(), balance));
}
}
void SendCoinsDialog::updateDisplayUnit()
{
setBalance(model->wallet().getBalances());
ui->customFee->setDisplayUnit(model->getOptionsModel()->getDisplayUnit());
updateSmartFeeLabel();
}
void SendCoinsDialog::processSendCoinsReturn(const WalletModel::SendCoinsReturn &sendCoinsReturn, const QString &msgArg)
{
QPair<QString, CClientUIInterface::MessageBoxFlags> msgParams;
// Default to a warning message, override if error message is needed
msgParams.second = CClientUIInterface::MSG_WARNING;
// This comment is specific to SendCoinsDialog usage of WalletModel::SendCoinsReturn.
// All status values are used only in WalletModel::prepareTransaction()
switch(sendCoinsReturn.status)
{
case WalletModel::InvalidAddress:
msgParams.first = tr("The recipient address is not valid. Please recheck.");
break;
case WalletModel::InvalidAmount:
msgParams.first = tr("The amount to pay must be larger than 0.");
break;
case WalletModel::AmountExceedsBalance:
msgParams.first = tr("The amount exceeds your balance.");
break;
case WalletModel::AmountWithFeeExceedsBalance:
msgParams.first = tr("The total exceeds your balance when the %1 transaction fee is included.").arg(msgArg);
break;
case WalletModel::DuplicateAddress:
msgParams.first = tr("Duplicate address found: addresses should only be used once each.");
break;
case WalletModel::TransactionCreationFailed:
msgParams.first = tr("Transaction creation failed!");
msgParams.second = CClientUIInterface::MSG_ERROR;
break;
case WalletModel::AbsurdFee:
msgParams.first = tr("A fee higher than %1 is considered an absurdly high fee.").arg(BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(), model->wallet().getDefaultMaxTxFee()));
break;
case WalletModel::PaymentRequestExpired:
msgParams.first = tr("Payment request expired.");
msgParams.second = CClientUIInterface::MSG_ERROR;
break;
// included to prevent a compiler warning.
case WalletModel::OK:
default:
return;
}
Q_EMIT message(tr("Send Coins"), msgParams.first, msgParams.second);
}
void SendCoinsDialog::minimizeFeeSection(bool fMinimize)
{
ui->labelFeeMinimized->setVisible(fMinimize);
ui->buttonChooseFee ->setVisible(fMinimize);
ui->buttonMinimizeFee->setVisible(!fMinimize);
ui->frameFeeSelection->setVisible(!fMinimize);
ui->horizontalLayoutSmartFee->setContentsMargins(0, (fMinimize ? 0 : 6), 0, 0);
fFeeMinimized = fMinimize;
}
void SendCoinsDialog::on_buttonChooseFee_clicked()
{
minimizeFeeSection(false);
}
void SendCoinsDialog::on_buttonMinimizeFee_clicked()
{
updateFeeMinimizedLabel();
minimizeFeeSection(true);
}
void SendCoinsDialog::useAvailableBalance(SendCoinsEntry* entry)
{
// Include watch-only for wallets without private key
m_coin_control->fAllowWatchOnly = model->wallet().privateKeysDisabled() && !model->wallet().hasExternalSigner();
// Calculate available amount to send.
CAmount amount = model->wallet().getAvailableBalance(*m_coin_control);
for (int i = 0; i < ui->entries->count(); ++i) {
SendCoinsEntry* e = qobject_cast<SendCoinsEntry*>(ui->entries->itemAt(i)->widget());
if (e && !e->isHidden() && e != entry) {
amount -= e->getValue().amount;
}
}
if (amount > 0) {
entry->checkSubtractFeeFromAmount();
entry->setAmount(amount);
} else {
entry->setAmount(0);
}
}
void SendCoinsDialog::updateFeeSectionControls()
{
ui->confTargetSelector ->setEnabled(ui->radioSmartFee->isChecked());
ui->labelSmartFee ->setEnabled(ui->radioSmartFee->isChecked());
ui->labelSmartFee2 ->setEnabled(ui->radioSmartFee->isChecked());
ui->labelSmartFee3 ->setEnabled(ui->radioSmartFee->isChecked());
ui->labelFeeEstimation ->setEnabled(ui->radioSmartFee->isChecked());
ui->labelCustomFeeWarning ->setEnabled(ui->radioCustomFee->isChecked());
ui->labelCustomPerKilobyte ->setEnabled(ui->radioCustomFee->isChecked());
ui->customFee ->setEnabled(ui->radioCustomFee->isChecked());
}
void SendCoinsDialog::updateFeeMinimizedLabel()
{
if(!model || !model->getOptionsModel())
return;
if (ui->radioSmartFee->isChecked())
ui->labelFeeMinimized->setText(ui->labelSmartFee->text());
else {
ui->labelFeeMinimized->setText(BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(), ui->customFee->value()) + "/kvB");
}
}
void SendCoinsDialog::updateCoinControlState()
{
if (ui->radioCustomFee->isChecked()) {
m_coin_control->m_feerate = CFeeRate(ui->customFee->value());
} else {
m_coin_control->m_feerate.reset();
}
// Avoid using global defaults when sending money from the GUI
// Either custom fee will be used or if not selected, the confirmation target from dropdown box
m_coin_control->m_confirm_target = getConfTargetForIndex(ui->confTargetSelector->currentIndex());
m_coin_control->m_signal_bip125_rbf = ui->optInRBF->isChecked();
// Include watch-only for wallets without private key
m_coin_control->fAllowWatchOnly = model->wallet().privateKeysDisabled() && !model->wallet().hasExternalSigner();
}
void SendCoinsDialog::updateNumberOfBlocks(int count, const QDateTime& blockDate, double nVerificationProgress, bool headers, SynchronizationState sync_state) {
if (sync_state == SynchronizationState::POST_INIT) {
updateSmartFeeLabel();
}
}
void SendCoinsDialog::updateSmartFeeLabel()
{
if(!model || !model->getOptionsModel())
return;
updateCoinControlState();
m_coin_control->m_feerate.reset(); // Explicitly use only fee estimation rate for smart fee labels
int returned_target;
FeeReason reason;
CFeeRate feeRate = CFeeRate(model->wallet().getMinimumFee(1000, *m_coin_control, &returned_target, &reason));
ui->labelSmartFee->setText(BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(), feeRate.GetFeePerK()) + "/kvB");
if (reason == FeeReason::FALLBACK) {
ui->labelSmartFee2->show(); // (Smart fee not initialized yet. This usually takes a few blocks...)
ui->labelFeeEstimation->setText("");
ui->fallbackFeeWarningLabel->setVisible(true);
int lightness = ui->fallbackFeeWarningLabel->palette().color(QPalette::WindowText).lightness();
QColor warning_colour(255 - (lightness / 5), 176 - (lightness / 3), 48 - (lightness / 14));
ui->fallbackFeeWarningLabel->setStyleSheet("QLabel { color: " + warning_colour.name() + "; }");
ui->fallbackFeeWarningLabel->setIndent(GUIUtil::TextWidth(QFontMetrics(ui->fallbackFeeWarningLabel->font()), "x"));
}
else
{
ui->labelSmartFee2->hide();
ui->labelFeeEstimation->setText(tr("Estimated to begin confirmation within %n block(s).", "", returned_target));
ui->fallbackFeeWarningLabel->setVisible(false);
}
updateFeeMinimizedLabel();
}
// Coin Control: copy label "Quantity" to clipboard
void SendCoinsDialog::coinControlClipboardQuantity()
{
GUIUtil::setClipboard(ui->labelCoinControlQuantity->text());
}
// Coin Control: copy label "Amount" to clipboard
void SendCoinsDialog::coinControlClipboardAmount()
{
GUIUtil::setClipboard(ui->labelCoinControlAmount->text().left(ui->labelCoinControlAmount->text().indexOf(" ")));
}
// Coin Control: copy label "Fee" to clipboard
void SendCoinsDialog::coinControlClipboardFee()
{
GUIUtil::setClipboard(ui->labelCoinControlFee->text().left(ui->labelCoinControlFee->text().indexOf(" ")).replace(ASYMP_UTF8, ""));
}
// Coin Control: copy label "After fee" to clipboard
void SendCoinsDialog::coinControlClipboardAfterFee()
{
GUIUtil::setClipboard(ui->labelCoinControlAfterFee->text().left(ui->labelCoinControlAfterFee->text().indexOf(" ")).replace(ASYMP_UTF8, ""));
}
// Coin Control: copy label "Bytes" to clipboard
void SendCoinsDialog::coinControlClipboardBytes()
{
GUIUtil::setClipboard(ui->labelCoinControlBytes->text().replace(ASYMP_UTF8, ""));
}
// Coin Control: copy label "Dust" to clipboard
void SendCoinsDialog::coinControlClipboardLowOutput()
{
GUIUtil::setClipboard(ui->labelCoinControlLowOutput->text());
}
// Coin Control: copy label "Change" to clipboard
void SendCoinsDialog::coinControlClipboardChange()
{
GUIUtil::setClipboard(ui->labelCoinControlChange->text().left(ui->labelCoinControlChange->text().indexOf(" ")).replace(ASYMP_UTF8, ""));
}
// Coin Control: settings menu - coin control enabled/disabled by user
void SendCoinsDialog::coinControlFeatureChanged(bool checked)
{
ui->frameCoinControl->setVisible(checked);
if (!checked && model) { // coin control features disabled
m_coin_control = std::make_unique<CCoinControl>();
}
coinControlUpdateLabels();
}
// Coin Control: button inputs -> show actual coin control dialog
void SendCoinsDialog::coinControlButtonClicked()
{
auto dlg = new CoinControlDialog(*m_coin_control, model, platformStyle);
connect(dlg, &QDialog::finished, this, &SendCoinsDialog::coinControlUpdateLabels);
GUIUtil::ShowModalDialogAsynchronously(dlg);
}
// Coin Control: checkbox custom change address
void SendCoinsDialog::coinControlChangeChecked(int state)
{
if (state == Qt::Unchecked)
{
m_coin_control->destChange = CNoDestination();
ui->labelCoinControlChangeLabel->clear();
}
else
// use this to re-validate an already entered address
coinControlChangeEdited(ui->lineEditCoinControlChange->text());
ui->lineEditCoinControlChange->setEnabled((state == Qt::Checked));
}
// Coin Control: custom change address changed
void SendCoinsDialog::coinControlChangeEdited(const QString& text)
{
if (model && model->getAddressTableModel())
{
// Default to no change address until verified
m_coin_control->destChange = CNoDestination();
ui->labelCoinControlChangeLabel->setStyleSheet("QLabel{color:red;}");
const CTxDestination dest = DecodeDestination(text.toStdString());
if (text.isEmpty()) // Nothing entered
{
ui->labelCoinControlChangeLabel->setText("");
}
else if (!IsValidDestination(dest)) // Invalid address
{
ui->labelCoinControlChangeLabel->setText(tr("Warning: Invalid Bitcoin address"));
}
else // Valid address
{
if (!model->wallet().isSpendable(dest)) {
ui->labelCoinControlChangeLabel->setText(tr("Warning: Unknown change address"));
// confirmation dialog
QMessageBox::StandardButton btnRetVal = QMessageBox::question(this, tr("Confirm custom change address"), tr("The address you selected for change is not part of this wallet. Any or all funds in your wallet may be sent to this address. Are you sure?"),
QMessageBox::Yes | QMessageBox::Cancel, QMessageBox::Cancel);
if(btnRetVal == QMessageBox::Yes)
m_coin_control->destChange = dest;
else
{
ui->lineEditCoinControlChange->setText("");
ui->labelCoinControlChangeLabel->setStyleSheet("QLabel{color:black;}");
ui->labelCoinControlChangeLabel->setText("");
}
}
else // Known change address
{
ui->labelCoinControlChangeLabel->setStyleSheet("QLabel{color:black;}");
// Query label
QString associatedLabel = model->getAddressTableModel()->labelForAddress(text);
if (!associatedLabel.isEmpty())
ui->labelCoinControlChangeLabel->setText(associatedLabel);
else
ui->labelCoinControlChangeLabel->setText(tr("(no label)"));
m_coin_control->destChange = dest;
}
}
}
}
// Coin Control: update labels
void SendCoinsDialog::coinControlUpdateLabels()
{
if (!model || !model->getOptionsModel())
return;
updateCoinControlState();
// set pay amounts
CoinControlDialog::payAmounts.clear();
CoinControlDialog::fSubtractFeeFromAmount = false;
for(int i = 0; i < ui->entries->count(); ++i)
{
SendCoinsEntry *entry = qobject_cast<SendCoinsEntry*>(ui->entries->itemAt(i)->widget());
if(entry && !entry->isHidden())
{
SendCoinsRecipient rcp = entry->getValue();
CoinControlDialog::payAmounts.append(rcp.amount);
if (rcp.fSubtractFeeFromAmount)
CoinControlDialog::fSubtractFeeFromAmount = true;
}
}
if (m_coin_control->HasSelected())
{
// actual coin control calculation
CoinControlDialog::updateLabels(*m_coin_control, model, this);
// show coin control stats
ui->labelCoinControlAutomaticallySelected->hide();
ui->widgetCoinControl->show();
}
else
{
// hide coin control stats
ui->labelCoinControlAutomaticallySelected->show();
ui->widgetCoinControl->hide();
ui->labelCoinControlInsuffFunds->hide();
}
}
SendConfirmationDialog::SendConfirmationDialog(const QString& title, const QString& text, const QString& informative_text, const QString& detailed_text, int _secDelay, bool enable_send, bool always_show_unsigned, QWidget* parent)
: QMessageBox(parent), secDelay(_secDelay), m_enable_send(enable_send)
{
setIcon(QMessageBox::Question);
setWindowTitle(title); // On macOS, the window title is ignored (as required by the macOS Guidelines).
setText(text);
setInformativeText(informative_text);
setDetailedText(detailed_text);
setStandardButtons(QMessageBox::Yes | QMessageBox::Cancel);
if (always_show_unsigned || !enable_send) addButton(QMessageBox::Save);
setDefaultButton(QMessageBox::Cancel);
yesButton = button(QMessageBox::Yes);
if (confirmButtonText.isEmpty()) {
confirmButtonText = yesButton->text();
}
m_psbt_button = button(QMessageBox::Save);
updateButtons();
connect(&countDownTimer, &QTimer::timeout, this, &SendConfirmationDialog::countDown);
}
int SendConfirmationDialog::exec()
{
updateButtons();
countDownTimer.start(1s);
return QMessageBox::exec();
}
void SendConfirmationDialog::countDown()
{
secDelay--;
updateButtons();
if(secDelay <= 0)
{
countDownTimer.stop();
}
}
void SendConfirmationDialog::updateButtons()
{
if(secDelay > 0)
{
yesButton->setEnabled(false);
yesButton->setText(confirmButtonText + (m_enable_send ? (" (" + QString::number(secDelay) + ")") : QString("")));
if (m_psbt_button) {
m_psbt_button->setEnabled(false);
m_psbt_button->setText(m_psbt_button_text + " (" + QString::number(secDelay) + ")");
}
}
else
{
yesButton->setEnabled(m_enable_send);
yesButton->setText(confirmButtonText);
if (m_psbt_button) {
m_psbt_button->setEnabled(true);
m_psbt_button->setText(m_psbt_button_text);
}
}
}
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