aboutsummaryrefslogtreecommitdiff
path: root/src/qt/coincontroldialog.cpp
blob: 7dfc38673ed56f02a683069af94ca3168f694078 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
// Copyright (c) 2011-2016 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include <qt/coincontroldialog.h>
#include <ui_coincontroldialog.h>

#include <qt/addresstablemodel.h>
#include <qt/bitcoinunits.h>
#include <qt/guiutil.h>
#include <qt/optionsmodel.h>
#include <qt/platformstyle.h>
#include <txmempool.h>
#include <qt/walletmodel.h>

#include <wallet/coincontrol.h>
#include <init.h>
#include <policy/fees.h>
#include <policy/policy.h>
#include <validation.h> // For mempool
#include <wallet/fees.h>
#include <wallet/wallet.h>

#include <QApplication>
#include <QCheckBox>
#include <QCursor>
#include <QDialogButtonBox>
#include <QFlags>
#include <QIcon>
#include <QSettings>
#include <QString>
#include <QTreeWidget>
#include <QTreeWidgetItem>

QList<CAmount> CoinControlDialog::payAmounts;
CCoinControl* CoinControlDialog::coinControl = new CCoinControl();
bool CoinControlDialog::fSubtractFeeFromAmount = false;

bool CCoinControlWidgetItem::operator<(const QTreeWidgetItem &other) const {
    int column = treeWidget()->sortColumn();
    if (column == CoinControlDialog::COLUMN_AMOUNT || column == CoinControlDialog::COLUMN_DATE || column == CoinControlDialog::COLUMN_CONFIRMATIONS)
        return data(column, Qt::UserRole).toLongLong() < other.data(column, Qt::UserRole).toLongLong();
    return QTreeWidgetItem::operator<(other);
}

CoinControlDialog::CoinControlDialog(const PlatformStyle *_platformStyle, QWidget *parent) :
    QDialog(parent),
    ui(new Ui::CoinControlDialog),
    model(0),
    platformStyle(_platformStyle)
{
    ui->setupUi(this);

    // context menu actions
    QAction *copyAddressAction = new QAction(tr("Copy address"), this);
    QAction *copyLabelAction = new QAction(tr("Copy label"), this);
    QAction *copyAmountAction = new QAction(tr("Copy amount"), this);
             copyTransactionHashAction = new QAction(tr("Copy transaction ID"), this);  // we need to enable/disable this
             lockAction = new QAction(tr("Lock unspent"), this);                        // we need to enable/disable this
             unlockAction = new QAction(tr("Unlock unspent"), this);                    // we need to enable/disable this

    // context menu
    contextMenu = new QMenu(this);
    contextMenu->addAction(copyAddressAction);
    contextMenu->addAction(copyLabelAction);
    contextMenu->addAction(copyAmountAction);
    contextMenu->addAction(copyTransactionHashAction);
    contextMenu->addSeparator();
    contextMenu->addAction(lockAction);
    contextMenu->addAction(unlockAction);

    // context menu signals
    connect(ui->treeWidget, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(showMenu(QPoint)));
    connect(copyAddressAction, SIGNAL(triggered()), this, SLOT(copyAddress()));
    connect(copyLabelAction, SIGNAL(triggered()), this, SLOT(copyLabel()));
    connect(copyAmountAction, SIGNAL(triggered()), this, SLOT(copyAmount()));
    connect(copyTransactionHashAction, SIGNAL(triggered()), this, SLOT(copyTransactionHash()));
    connect(lockAction, SIGNAL(triggered()), this, SLOT(lockCoin()));
    connect(unlockAction, SIGNAL(triggered()), this, SLOT(unlockCoin()));

    // 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, SIGNAL(triggered()), this, SLOT(clipboardQuantity()));
    connect(clipboardAmountAction, SIGNAL(triggered()), this, SLOT(clipboardAmount()));
    connect(clipboardFeeAction, SIGNAL(triggered()), this, SLOT(clipboardFee()));
    connect(clipboardAfterFeeAction, SIGNAL(triggered()), this, SLOT(clipboardAfterFee()));
    connect(clipboardBytesAction, SIGNAL(triggered()), this, SLOT(clipboardBytes()));
    connect(clipboardLowOutputAction, SIGNAL(triggered()), this, SLOT(clipboardLowOutput()));
    connect(clipboardChangeAction, SIGNAL(triggered()), this, SLOT(clipboardChange()));

    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);

    // toggle tree/list mode
    connect(ui->radioTreeMode, SIGNAL(toggled(bool)), this, SLOT(radioTreeMode(bool)));
    connect(ui->radioListMode, SIGNAL(toggled(bool)), this, SLOT(radioListMode(bool)));

    // click on checkbox
    connect(ui->treeWidget, SIGNAL(itemChanged(QTreeWidgetItem*, int)), this, SLOT(viewItemChanged(QTreeWidgetItem*, int)));

    // click on header
#if QT_VERSION < 0x050000
    ui->treeWidget->header()->setClickable(true);
#else
    ui->treeWidget->header()->setSectionsClickable(true);
#endif
    connect(ui->treeWidget->header(), SIGNAL(sectionClicked(int)), this, SLOT(headerSectionClicked(int)));

    // ok button
    connect(ui->buttonBox, SIGNAL(clicked( QAbstractButton*)), this, SLOT(buttonBoxClicked(QAbstractButton*)));

    // (un)select all
    connect(ui->pushButtonSelectAll, SIGNAL(clicked()), this, SLOT(buttonSelectAllClicked()));

    // change coin control first column label due Qt4 bug.
    // see https://github.com/bitcoin/bitcoin/issues/5716
    ui->treeWidget->headerItem()->setText(COLUMN_CHECKBOX, QString());

    ui->treeWidget->setColumnWidth(COLUMN_CHECKBOX, 84);
    ui->treeWidget->setColumnWidth(COLUMN_AMOUNT, 110);
    ui->treeWidget->setColumnWidth(COLUMN_LABEL, 190);
    ui->treeWidget->setColumnWidth(COLUMN_ADDRESS, 320);
    ui->treeWidget->setColumnWidth(COLUMN_DATE, 130);
    ui->treeWidget->setColumnWidth(COLUMN_CONFIRMATIONS, 110);
    ui->treeWidget->setColumnHidden(COLUMN_TXHASH, true);         // store transaction hash in this column, but don't show it
    ui->treeWidget->setColumnHidden(COLUMN_VOUT_INDEX, true);     // store vout index in this column, but don't show it

    // default view is sorted by amount desc
    sortView(COLUMN_AMOUNT, Qt::DescendingOrder);

    // restore list mode and sortorder as a convenience feature
    QSettings settings;
    if (settings.contains("nCoinControlMode") && !settings.value("nCoinControlMode").toBool())
        ui->radioTreeMode->click();
    if (settings.contains("nCoinControlSortColumn") && settings.contains("nCoinControlSortOrder"))
        sortView(settings.value("nCoinControlSortColumn").toInt(), ((Qt::SortOrder)settings.value("nCoinControlSortOrder").toInt()));
}

CoinControlDialog::~CoinControlDialog()
{
    QSettings settings;
    settings.setValue("nCoinControlMode", ui->radioListMode->isChecked());
    settings.setValue("nCoinControlSortColumn", sortColumn);
    settings.setValue("nCoinControlSortOrder", (int)sortOrder);

    delete ui;
}

void CoinControlDialog::setModel(WalletModel *_model)
{
    this->model = _model;

    if(_model && _model->getOptionsModel() && _model->getAddressTableModel())
    {
        updateView();
        updateLabelLocked();
        CoinControlDialog::updateLabels(_model, this);
    }
}

// ok button
void CoinControlDialog::buttonBoxClicked(QAbstractButton* button)
{
    if (ui->buttonBox->buttonRole(button) == QDialogButtonBox::AcceptRole)
        done(QDialog::Accepted); // closes the dialog
}

// (un)select all
void CoinControlDialog::buttonSelectAllClicked()
{
    Qt::CheckState state = Qt::Checked;
    for (int i = 0; i < ui->treeWidget->topLevelItemCount(); i++)
    {
        if (ui->treeWidget->topLevelItem(i)->checkState(COLUMN_CHECKBOX) != Qt::Unchecked)
        {
            state = Qt::Unchecked;
            break;
        }
    }
    ui->treeWidget->setEnabled(false);
    for (int i = 0; i < ui->treeWidget->topLevelItemCount(); i++)
            if (ui->treeWidget->topLevelItem(i)->checkState(COLUMN_CHECKBOX) != state)
                ui->treeWidget->topLevelItem(i)->setCheckState(COLUMN_CHECKBOX, state);
    ui->treeWidget->setEnabled(true);
    if (state == Qt::Unchecked)
        coinControl->UnSelectAll(); // just to be sure
    CoinControlDialog::updateLabels(model, this);
}

// context menu
void CoinControlDialog::showMenu(const QPoint &point)
{
    QTreeWidgetItem *item = ui->treeWidget->itemAt(point);
    if(item)
    {
        contextMenuItem = item;

        // disable some items (like Copy Transaction ID, lock, unlock) for tree roots in context menu
        if (item->text(COLUMN_TXHASH).length() == 64) // transaction hash is 64 characters (this means its a child node, so its not a parent node in tree mode)
        {
            copyTransactionHashAction->setEnabled(true);
            if (model->isLockedCoin(uint256S(item->text(COLUMN_TXHASH).toStdString()), item->text(COLUMN_VOUT_INDEX).toUInt()))
            {
                lockAction->setEnabled(false);
                unlockAction->setEnabled(true);
            }
            else
            {
                lockAction->setEnabled(true);
                unlockAction->setEnabled(false);
            }
        }
        else // this means click on parent node in tree mode -> disable all
        {
            copyTransactionHashAction->setEnabled(false);
            lockAction->setEnabled(false);
            unlockAction->setEnabled(false);
        }

        // show context menu
        contextMenu->exec(QCursor::pos());
    }
}

// context menu action: copy amount
void CoinControlDialog::copyAmount()
{
    GUIUtil::setClipboard(BitcoinUnits::removeSpaces(contextMenuItem->text(COLUMN_AMOUNT)));
}

// context menu action: copy label
void CoinControlDialog::copyLabel()
{
    if (ui->radioTreeMode->isChecked() && contextMenuItem->text(COLUMN_LABEL).length() == 0 && contextMenuItem->parent())
        GUIUtil::setClipboard(contextMenuItem->parent()->text(COLUMN_LABEL));
    else
        GUIUtil::setClipboard(contextMenuItem->text(COLUMN_LABEL));
}

// context menu action: copy address
void CoinControlDialog::copyAddress()
{
    if (ui->radioTreeMode->isChecked() && contextMenuItem->text(COLUMN_ADDRESS).length() == 0 && contextMenuItem->parent())
        GUIUtil::setClipboard(contextMenuItem->parent()->text(COLUMN_ADDRESS));
    else
        GUIUtil::setClipboard(contextMenuItem->text(COLUMN_ADDRESS));
}

// context menu action: copy transaction id
void CoinControlDialog::copyTransactionHash()
{
    GUIUtil::setClipboard(contextMenuItem->text(COLUMN_TXHASH));
}

// context menu action: lock coin
void CoinControlDialog::lockCoin()
{
    if (contextMenuItem->checkState(COLUMN_CHECKBOX) == Qt::Checked)
        contextMenuItem->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);

    COutPoint outpt(uint256S(contextMenuItem->text(COLUMN_TXHASH).toStdString()), contextMenuItem->text(COLUMN_VOUT_INDEX).toUInt());
    model->lockCoin(outpt);
    contextMenuItem->setDisabled(true);
    contextMenuItem->setIcon(COLUMN_CHECKBOX, platformStyle->SingleColorIcon(":/icons/lock_closed"));
    updateLabelLocked();
}

// context menu action: unlock coin
void CoinControlDialog::unlockCoin()
{
    COutPoint outpt(uint256S(contextMenuItem->text(COLUMN_TXHASH).toStdString()), contextMenuItem->text(COLUMN_VOUT_INDEX).toUInt());
    model->unlockCoin(outpt);
    contextMenuItem->setDisabled(false);
    contextMenuItem->setIcon(COLUMN_CHECKBOX, QIcon());
    updateLabelLocked();
}

// copy label "Quantity" to clipboard
void CoinControlDialog::clipboardQuantity()
{
    GUIUtil::setClipboard(ui->labelCoinControlQuantity->text());
}

// copy label "Amount" to clipboard
void CoinControlDialog::clipboardAmount()
{
    GUIUtil::setClipboard(ui->labelCoinControlAmount->text().left(ui->labelCoinControlAmount->text().indexOf(" ")));
}

// copy label "Fee" to clipboard
void CoinControlDialog::clipboardFee()
{
    GUIUtil::setClipboard(ui->labelCoinControlFee->text().left(ui->labelCoinControlFee->text().indexOf(" ")).replace(ASYMP_UTF8, ""));
}

// copy label "After fee" to clipboard
void CoinControlDialog::clipboardAfterFee()
{
    GUIUtil::setClipboard(ui->labelCoinControlAfterFee->text().left(ui->labelCoinControlAfterFee->text().indexOf(" ")).replace(ASYMP_UTF8, ""));
}

// copy label "Bytes" to clipboard
void CoinControlDialog::clipboardBytes()
{
    GUIUtil::setClipboard(ui->labelCoinControlBytes->text().replace(ASYMP_UTF8, ""));
}

// copy label "Dust" to clipboard
void CoinControlDialog::clipboardLowOutput()
{
    GUIUtil::setClipboard(ui->labelCoinControlLowOutput->text());
}

// copy label "Change" to clipboard
void CoinControlDialog::clipboardChange()
{
    GUIUtil::setClipboard(ui->labelCoinControlChange->text().left(ui->labelCoinControlChange->text().indexOf(" ")).replace(ASYMP_UTF8, ""));
}

// treeview: sort
void CoinControlDialog::sortView(int column, Qt::SortOrder order)
{
    sortColumn = column;
    sortOrder = order;
    ui->treeWidget->sortItems(column, order);
    ui->treeWidget->header()->setSortIndicator(sortColumn, sortOrder);
}

// treeview: clicked on header
void CoinControlDialog::headerSectionClicked(int logicalIndex)
{
    if (logicalIndex == COLUMN_CHECKBOX) // click on most left column -> do nothing
    {
        ui->treeWidget->header()->setSortIndicator(sortColumn, sortOrder);
    }
    else
    {
        if (sortColumn == logicalIndex)
            sortOrder = ((sortOrder == Qt::AscendingOrder) ? Qt::DescendingOrder : Qt::AscendingOrder);
        else
        {
            sortColumn = logicalIndex;
            sortOrder = ((sortColumn == COLUMN_LABEL || sortColumn == COLUMN_ADDRESS) ? Qt::AscendingOrder : Qt::DescendingOrder); // if label or address then default => asc, else default => desc
        }

        sortView(sortColumn, sortOrder);
    }
}

// toggle tree mode
void CoinControlDialog::radioTreeMode(bool checked)
{
    if (checked && model)
        updateView();
}

// toggle list mode
void CoinControlDialog::radioListMode(bool checked)
{
    if (checked && model)
        updateView();
}

// checkbox clicked by user
void CoinControlDialog::viewItemChanged(QTreeWidgetItem* item, int column)
{
    if (column == COLUMN_CHECKBOX && item->text(COLUMN_TXHASH).length() == 64) // transaction hash is 64 characters (this means its a child node, so its not a parent node in tree mode)
    {
        COutPoint outpt(uint256S(item->text(COLUMN_TXHASH).toStdString()), item->text(COLUMN_VOUT_INDEX).toUInt());

        if (item->checkState(COLUMN_CHECKBOX) == Qt::Unchecked)
            coinControl->UnSelect(outpt);
        else if (item->isDisabled()) // locked (this happens if "check all" through parent node)
            item->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
        else
            coinControl->Select(outpt);

        // selection changed -> update labels
        if (ui->treeWidget->isEnabled()) // do not update on every click for (un)select all
            CoinControlDialog::updateLabels(model, this);
    }

    // TODO: Remove this temporary qt5 fix after Qt5.3 and Qt5.4 are no longer used.
    //       Fixed in Qt5.5 and above: https://bugreports.qt.io/browse/QTBUG-43473
#if QT_VERSION >= 0x050000
    else if (column == COLUMN_CHECKBOX && item->childCount() > 0)
    {
        if (item->checkState(COLUMN_CHECKBOX) == Qt::PartiallyChecked && item->child(0)->checkState(COLUMN_CHECKBOX) == Qt::PartiallyChecked)
            item->setCheckState(COLUMN_CHECKBOX, Qt::Checked);
    }
#endif
}

// shows count of locked unspent outputs
void CoinControlDialog::updateLabelLocked()
{
    std::vector<COutPoint> vOutpts;
    model->listLockedCoins(vOutpts);
    if (vOutpts.size() > 0)
    {
       ui->labelLocked->setText(tr("(%1 locked)").arg(vOutpts.size()));
       ui->labelLocked->setVisible(true);
    }
    else ui->labelLocked->setVisible(false);
}

void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
{
    if (!model)
        return;

    // nPayAmount
    CAmount nPayAmount = 0;
    bool fDust = false;
    CMutableTransaction txDummy;
    for (const CAmount &amount : CoinControlDialog::payAmounts)
    {
        nPayAmount += amount;

        if (amount > 0)
        {
            CTxOut txout(amount, (CScript)std::vector<unsigned char>(24, 0));
            txDummy.vout.push_back(txout);
            fDust |= IsDust(txout, ::dustRelayFee);
        }
    }

    CAmount nAmount             = 0;
    CAmount nPayFee             = 0;
    CAmount nAfterFee           = 0;
    CAmount nChange             = 0;
    unsigned int nBytes         = 0;
    unsigned int nBytesInputs   = 0;
    unsigned int nQuantity      = 0;
    bool fWitness               = false;

    std::vector<COutPoint> vCoinControl;
    std::vector<COutput>   vOutputs;
    coinControl->ListSelected(vCoinControl);
    model->getOutputs(vCoinControl, vOutputs);

    for (const COutput& out : vOutputs) {
        // unselect already spent, very unlikely scenario, this could happen
        // when selected are spent elsewhere, like rpc or another computer
        uint256 txhash = out.tx->GetHash();
        COutPoint outpt(txhash, out.i);
        if (model->isSpent(outpt))
        {
            coinControl->UnSelect(outpt);
            continue;
        }

        // Quantity
        nQuantity++;

        // Amount
        nAmount += out.tx->tx->vout[out.i].nValue;

        // Bytes
        CTxDestination address;
        int witnessversion = 0;
        std::vector<unsigned char> witnessprogram;
        if (out.tx->tx->vout[out.i].scriptPubKey.IsWitnessProgram(witnessversion, witnessprogram))
        {
            nBytesInputs += (32 + 4 + 1 + (107 / WITNESS_SCALE_FACTOR) + 4);
            fWitness = true;
        }
        else if(ExtractDestination(out.tx->tx->vout[out.i].scriptPubKey, address))
        {
            CPubKey pubkey;
            CKeyID *keyid = boost::get<CKeyID>(&address);
            if (keyid && model->getPubKey(*keyid, pubkey))
            {
                nBytesInputs += (pubkey.IsCompressed() ? 148 : 180);
            }
            else
                nBytesInputs += 148; // in all error cases, simply assume 148 here
        }
        else nBytesInputs += 148;
    }

    // calculation
    if (nQuantity > 0)
    {
        // Bytes
        nBytes = nBytesInputs + ((CoinControlDialog::payAmounts.size() > 0 ? CoinControlDialog::payAmounts.size() + 1 : 2) * 34) + 10; // always assume +1 output for change here
        if (fWitness)
        {
            // there is some fudging in these numbers related to the actual virtual transaction size calculation that will keep this estimate from being exact.
            // usually, the result will be an overestimate within a couple of satoshis so that the confirmation dialog ends up displaying a slightly smaller fee.
            // also, the witness stack size value is a variable sized integer. usually, the number of stack items will be well under the single byte var int limit.
            nBytes += 2; // account for the serialized marker and flag bytes
            nBytes += nQuantity; // account for the witness byte that holds the number of stack items for each input.
        }

        // in the subtract fee from amount case, we can tell if zero change already and subtract the bytes, so that fee calculation afterwards is accurate
        if (CoinControlDialog::fSubtractFeeFromAmount)
            if (nAmount - nPayAmount == 0)
                nBytes -= 34;

        // Fee
        nPayFee = GetMinimumFee(nBytes, *coinControl, ::mempool, ::feeEstimator, nullptr /* FeeCalculation */);

        if (nPayAmount > 0)
        {
            nChange = nAmount - nPayAmount;
            if (!CoinControlDialog::fSubtractFeeFromAmount)
                nChange -= nPayFee;

            // Never create dust outputs; if we would, just add the dust to the fee.
            if (nChange > 0 && nChange < MIN_CHANGE)
            {
                CTxOut txout(nChange, (CScript)std::vector<unsigned char>(24, 0));
                if (IsDust(txout, ::dustRelayFee))
                {
                    nPayFee += nChange;
                    nChange = 0;
                    if (CoinControlDialog::fSubtractFeeFromAmount)
                        nBytes -= 34; // we didn't detect lack of change above
                }
            }

            if (nChange == 0 && !CoinControlDialog::fSubtractFeeFromAmount)
                nBytes -= 34;
        }

        // after fee
        nAfterFee = std::max<CAmount>(nAmount - nPayFee, 0);
    }

    // actually update labels
    int nDisplayUnit = BitcoinUnits::BTC;
    if (model && model->getOptionsModel())
        nDisplayUnit = model->getOptionsModel()->getDisplayUnit();

    QLabel *l1 = dialog->findChild<QLabel *>("labelCoinControlQuantity");
    QLabel *l2 = dialog->findChild<QLabel *>("labelCoinControlAmount");
    QLabel *l3 = dialog->findChild<QLabel *>("labelCoinControlFee");
    QLabel *l4 = dialog->findChild<QLabel *>("labelCoinControlAfterFee");
    QLabel *l5 = dialog->findChild<QLabel *>("labelCoinControlBytes");
    QLabel *l7 = dialog->findChild<QLabel *>("labelCoinControlLowOutput");
    QLabel *l8 = dialog->findChild<QLabel *>("labelCoinControlChange");

    // enable/disable "dust" and "change"
    dialog->findChild<QLabel *>("labelCoinControlLowOutputText")->setEnabled(nPayAmount > 0);
    dialog->findChild<QLabel *>("labelCoinControlLowOutput")    ->setEnabled(nPayAmount > 0);
    dialog->findChild<QLabel *>("labelCoinControlChangeText")   ->setEnabled(nPayAmount > 0);
    dialog->findChild<QLabel *>("labelCoinControlChange")       ->setEnabled(nPayAmount > 0);

    // stats
    l1->setText(QString::number(nQuantity));                                 // Quantity
    l2->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nAmount));        // Amount
    l3->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nPayFee));        // Fee
    l4->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nAfterFee));      // After Fee
    l5->setText(((nBytes > 0) ? ASYMP_UTF8 : "") + QString::number(nBytes));        // Bytes
    l7->setText(fDust ? tr("yes") : tr("no"));                               // Dust
    l8->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nChange));        // Change
    if (nPayFee > 0)
    {
        l3->setText(ASYMP_UTF8 + l3->text());
        l4->setText(ASYMP_UTF8 + l4->text());
        if (nChange > 0 && !CoinControlDialog::fSubtractFeeFromAmount)
            l8->setText(ASYMP_UTF8 + l8->text());
    }

    // turn label red when dust
    l7->setStyleSheet((fDust) ? "color:red;" : "");

    // tool tips
    QString toolTipDust = tr("This label turns red if any recipient receives an amount smaller than the current dust threshold.");

    // how many satoshis the estimated fee can vary per byte we guess wrong
    double dFeeVary = (nBytes != 0) ? (double)nPayFee / nBytes : 0;

    QString toolTip4 = tr("Can vary +/- %1 satoshi(s) per input.").arg(dFeeVary);

    l3->setToolTip(toolTip4);
    l4->setToolTip(toolTip4);
    l7->setToolTip(toolTipDust);
    l8->setToolTip(toolTip4);
    dialog->findChild<QLabel *>("labelCoinControlFeeText")      ->setToolTip(l3->toolTip());
    dialog->findChild<QLabel *>("labelCoinControlAfterFeeText") ->setToolTip(l4->toolTip());
    dialog->findChild<QLabel *>("labelCoinControlBytesText")    ->setToolTip(l5->toolTip());
    dialog->findChild<QLabel *>("labelCoinControlLowOutputText")->setToolTip(l7->toolTip());
    dialog->findChild<QLabel *>("labelCoinControlChangeText")   ->setToolTip(l8->toolTip());

    // Insufficient funds
    QLabel *label = dialog->findChild<QLabel *>("labelCoinControlInsuffFunds");
    if (label)
        label->setVisible(nChange < 0);
}

void CoinControlDialog::updateView()
{
    if (!model || !model->getOptionsModel() || !model->getAddressTableModel())
        return;

    bool treeMode = ui->radioTreeMode->isChecked();

    ui->treeWidget->clear();
    ui->treeWidget->setEnabled(false); // performance, otherwise updateLabels would be called for every checked checkbox
    ui->treeWidget->setAlternatingRowColors(!treeMode);
    QFlags<Qt::ItemFlag> flgCheckbox = Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsUserCheckable;
    QFlags<Qt::ItemFlag> flgTristate = Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsUserCheckable | Qt::ItemIsTristate;

    int nDisplayUnit = model->getOptionsModel()->getDisplayUnit();

    std::map<QString, std::vector<COutput> > mapCoins;
    model->listCoins(mapCoins);

    for (const std::pair<QString, std::vector<COutput>>& coins : mapCoins) {
        CCoinControlWidgetItem *itemWalletAddress = new CCoinControlWidgetItem();
        itemWalletAddress->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
        QString sWalletAddress = coins.first;
        QString sWalletLabel = model->getAddressTableModel()->labelForAddress(sWalletAddress);
        if (sWalletLabel.isEmpty())
            sWalletLabel = tr("(no label)");

        if (treeMode)
        {
            // wallet address
            ui->treeWidget->addTopLevelItem(itemWalletAddress);

            itemWalletAddress->setFlags(flgTristate);
            itemWalletAddress->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);

            // label
            itemWalletAddress->setText(COLUMN_LABEL, sWalletLabel);

            // address
            itemWalletAddress->setText(COLUMN_ADDRESS, sWalletAddress);
        }

        CAmount nSum = 0;
        int nChildren = 0;
        for (const COutput& out : coins.second) {
            nSum += out.tx->tx->vout[out.i].nValue;
            nChildren++;

            CCoinControlWidgetItem *itemOutput;
            if (treeMode)    itemOutput = new CCoinControlWidgetItem(itemWalletAddress);
            else             itemOutput = new CCoinControlWidgetItem(ui->treeWidget);
            itemOutput->setFlags(flgCheckbox);
            itemOutput->setCheckState(COLUMN_CHECKBOX,Qt::Unchecked);

            // address
            CTxDestination outputAddress;
            QString sAddress = "";
            if(ExtractDestination(out.tx->tx->vout[out.i].scriptPubKey, outputAddress))
            {
                sAddress = QString::fromStdString(EncodeDestination(outputAddress));

                // if listMode or change => show bitcoin address. In tree mode, address is not shown again for direct wallet address outputs
                if (!treeMode || (!(sAddress == sWalletAddress)))
                    itemOutput->setText(COLUMN_ADDRESS, sAddress);
            }

            // label
            if (!(sAddress == sWalletAddress)) // change
            {
                // tooltip from where the change comes from
                itemOutput->setToolTip(COLUMN_LABEL, tr("change from %1 (%2)").arg(sWalletLabel).arg(sWalletAddress));
                itemOutput->setText(COLUMN_LABEL, tr("(change)"));
            }
            else if (!treeMode)
            {
                QString sLabel = model->getAddressTableModel()->labelForAddress(sAddress);
                if (sLabel.isEmpty())
                    sLabel = tr("(no label)");
                itemOutput->setText(COLUMN_LABEL, sLabel);
            }

            // amount
            itemOutput->setText(COLUMN_AMOUNT, BitcoinUnits::format(nDisplayUnit, out.tx->tx->vout[out.i].nValue));
            itemOutput->setData(COLUMN_AMOUNT, Qt::UserRole, QVariant((qlonglong)out.tx->tx->vout[out.i].nValue)); // padding so that sorting works correctly

            // date
            itemOutput->setText(COLUMN_DATE, GUIUtil::dateTimeStr(out.tx->GetTxTime()));
            itemOutput->setData(COLUMN_DATE, Qt::UserRole, QVariant((qlonglong)out.tx->GetTxTime()));

            // confirmations
            itemOutput->setText(COLUMN_CONFIRMATIONS, QString::number(out.nDepth));
            itemOutput->setData(COLUMN_CONFIRMATIONS, Qt::UserRole, QVariant((qlonglong)out.nDepth));

            // transaction hash
            uint256 txhash = out.tx->GetHash();
            itemOutput->setText(COLUMN_TXHASH, QString::fromStdString(txhash.GetHex()));

            // vout index
            itemOutput->setText(COLUMN_VOUT_INDEX, QString::number(out.i));

             // disable locked coins
            if (model->isLockedCoin(txhash, out.i))
            {
                COutPoint outpt(txhash, out.i);
                coinControl->UnSelect(outpt); // just to be sure
                itemOutput->setDisabled(true);
                itemOutput->setIcon(COLUMN_CHECKBOX, platformStyle->SingleColorIcon(":/icons/lock_closed"));
            }

            // set checkbox
            if (coinControl->IsSelected(COutPoint(txhash, out.i)))
                itemOutput->setCheckState(COLUMN_CHECKBOX, Qt::Checked);
        }

        // amount
        if (treeMode)
        {
            itemWalletAddress->setText(COLUMN_CHECKBOX, "(" + QString::number(nChildren) + ")");
            itemWalletAddress->setText(COLUMN_AMOUNT, BitcoinUnits::format(nDisplayUnit, nSum));
            itemWalletAddress->setData(COLUMN_AMOUNT, Qt::UserRole, QVariant((qlonglong)nSum));
        }
    }

    // expand all partially selected
    if (treeMode)
    {
        for (int i = 0; i < ui->treeWidget->topLevelItemCount(); i++)
            if (ui->treeWidget->topLevelItem(i)->checkState(COLUMN_CHECKBOX) == Qt::PartiallyChecked)
                ui->treeWidget->topLevelItem(i)->setExpanded(true);
    }

    // sort view
    sortView(sortColumn, sortOrder);
    ui->treeWidget->setEnabled(true);
}