wallet(HD): Qt UI - Seed Phrase dialog (generate/restore/backup)

Adds HDSeedDialog (Settings > Seed Phrase) with Generate New / Reveal for Backup / Restore from Phrase, driven by new WalletModel HD methods. Restore rescans the chain. Requires wallet unlock via the standard UnlockContext.
2026-06-15 14:44:33 -07:00
parent 11ed086d1e
commit c464e6c59d
7 changed files with 246 additions and 0 deletions
@@ -0,0 +1,142 @@
+// Copyright (c) 2026 The Triangles developers
+// Distributed under the MIT/X11 software license.
+#include "hdseeddialog.h"
+#include "walletmodel.h"
+
+#include <QVBoxLayout>
+#include <QHBoxLayout>
+#include <QPushButton>
+#include <QPlainTextEdit>
+#include <QLabel>
+#include <QMessageBox>
+#include <QFont>
+
+HDSeedDialog::HDSeedDialog(QWidget *parent)
+    : QDialog(parent), model(0), seedText(0), statusLabel(0)
+{
+    setWindowTitle(tr("HD Seed Phrase (BIP39)"));
+    resize(560, 360);
+
+    QVBoxLayout *layout = new QVBoxLayout(this);
+
+    QLabel *intro = new QLabel(tr(
+        "A 24-word seed phrase is a complete backup of this wallet. Anyone who has it "
+        "can spend your coins. Write it down on paper and keep it offline."), this);
+    intro->setWordWrap(true);
+    layout->addWidget(intro);
+
+    seedText = new QPlainTextEdit(this);
+    seedText->setPlaceholderText(tr(
+        "Your 24-word phrase appears here when you generate or reveal it. "
+        "To restore, paste an existing 24-word phrase here and click 'Restore from Phrase'."));
+    QFont mono("monospace");
+    mono.setStyleHint(QFont::Monospace);
+    seedText->setFont(mono);
+    layout->addWidget(seedText);
+
+    statusLabel = new QLabel(this);
+    statusLabel->setWordWrap(true);
+    layout->addWidget(statusLabel);
+
+    QHBoxLayout *btns = new QHBoxLayout();
+    QPushButton *genBtn = new QPushButton(tr("Generate New"), this);
+    QPushButton *showBtn = new QPushButton(tr("Reveal for Backup"), this);
+    QPushButton *restoreBtn = new QPushButton(tr("Restore from Phrase"), this);
+    QPushButton *closeBtn = new QPushButton(tr("Close"), this);
+    btns->addWidget(genBtn);
+    btns->addWidget(showBtn);
+    btns->addWidget(restoreBtn);
+    btns->addStretch();
+    btns->addWidget(closeBtn);
+    layout->addLayout(btns);
+
+    connect(genBtn, SIGNAL(clicked()), this, SLOT(onGenerate()));
+    connect(showBtn, SIGNAL(clicked()), this, SLOT(onShow()));
+    connect(restoreBtn, SIGNAL(clicked()), this, SLOT(onRestore()));
+    connect(closeBtn, SIGNAL(clicked()), this, SLOT(accept()));
+}
+
+void HDSeedDialog::setModel(WalletModel *modelIn)
+{
+    model = modelIn;
+    refreshStatus();
+}
+
+void HDSeedDialog::refreshStatus()
+{
+    if (!model || !statusLabel) return;
+    if (model->hdEnabled())
+        statusLabel->setText(tr("Status: HD seed is ACTIVE. Use 'Reveal for Backup' to view your phrase."));
+    else
+        statusLabel->setText(tr("Status: no HD seed yet. Use 'Generate New' to create one."));
+}
+
+void HDSeedDialog::onGenerate()
+{
+    if (!model) return;
+    if (model->hdEnabled()) {
+        QMessageBox::warning(this, tr("HD seed already set"),
+            tr("This wallet already has an HD seed. Use 'Reveal for Backup' to view it."));
+        return;
+    }
+    if (QMessageBox::question(this, tr("Generate new seed"),
+            tr("Generate a new 24-word HD seed for this wallet?"),
+            QMessageBox::Yes | QMessageBox::No) != QMessageBox::Yes)
+        return;
+
+    WalletModel::UnlockContext ctx(model->requestUnlock());
+    if (!ctx.isValid()) return;
+
+    QString mnemonic, err;
+    if (!model->hdNew(mnemonic, err)) {
+        QMessageBox::critical(this, tr("Error"), err);
+        return;
+    }
+    seedText->setPlainText(mnemonic);
+    QMessageBox::information(this, tr("Write this down"),
+        tr("Your new 24-word seed phrase is shown above. Write it on paper and store it safely "
+           "and offline. This is the only backup of this wallet."));
+    refreshStatus();
+}
+
+void HDSeedDialog::onShow()
+{
+    if (!model) return;
+    WalletModel::UnlockContext ctx(model->requestUnlock());
+    if (!ctx.isValid()) return;
+
+    QString mnemonic, err;
+    if (!model->hdShow(mnemonic, err)) {
+        QMessageBox::critical(this, tr("Error"), err);
+        return;
+    }
+    seedText->setPlainText(mnemonic);
+}
+
+void HDSeedDialog::onRestore()
+{
+    if (!model) return;
+    QString phrase = seedText->toPlainText().trimmed();
+    if (phrase.isEmpty()) {
+        QMessageBox::warning(this, tr("No phrase"),
+            tr("Paste a 24-word phrase into the box first."));
+        return;
+    }
+    if (QMessageBox::question(this, tr("Restore from phrase"),
+            tr("Restore the HD seed from the phrase in the box and rescan the chain? "
+               "This replaces the current HD seed."),
+            QMessageBox::Yes | QMessageBox::No) != QMessageBox::Yes)
+        return;
+
+    WalletModel::UnlockContext ctx(model->requestUnlock());
+    if (!ctx.isValid()) return;
+
+    QString err;
+    if (!model->hdRestore(phrase, err)) {
+        QMessageBox::critical(this, tr("Error"), err);
+        return;
+    }
+    QMessageBox::information(this, tr("Restored"),
+        tr("HD seed restored and the chain was rescanned for your funds."));
+    refreshStatus();
+}