qml: add signals for QEQRScanner and fallbacks, add QEBytes container type
so we can pass along byte arrays between QML and python, port qr scan
occurrences to new signals.
when setting a transaction label in the qml
`LightningPaymentDetails` or `TxDetails` dialogs which get opened
directly by the `ReceiveDialog` (`onRequestPaid`) the label is not applied on the main
transaction list as no callback for `detailsChanged` is registered which
gets called when the label changes. As a result the label is only
visible after the main list gets reloaded (e.g. restart).
This commit adds callbacks for `detailsChanged` to fix this.
lightning: implicit save of lightning invoice with override amount deferred until actual payment is accepted.
on-chain: for now, invoice is implicitly saved when override amount is passed to ConfirmTxDialog. (this is sooner
than current desktop client, which saves - and only saves - when Pay is clicked from ConfirmTxDialog)
avoid overloading invoiceParser with new payment identifiers while potentially long-running
resolve/finalize steps are ongoing, show errors inresolve/finalize steps to user.
given a bip21 uri that has both onchain addr and bolt11,
if we have LN enabled but no LN channels, auto-fallback to paying onchain
we will have to clean up and unify this logic between GUIs. becoming spaghetti :/
rumour has it, Thomas has a branch? :P
QEInvoice/QEInvoiceParser now properly split for mapping to Invoice type (QEInvoice)
and parsing/resolving of payment identifiers (QEInvoiceParser).
additionally, old, unused QEUserEnteredPayment was removed.
invoices are now never saved with user-entered amount if the original invoice
did not specify an amount (e.g. address-only, no-amount bip21 uri, or no-amount
lightning invoice). Furthermore, QEInvoice now adds an isSaved property so the
UI doesn't need to infer that from the existence of the invoice key.
Payments of lightning invoices are now triggered through QEInvoice.pay_lightning_invoice(),
using the internally kept Invoice instance. This replaces the old call path of
QEWallet.pay_lightning_invoice(invoice_key) which required the invoice to be saved
in the backend wallet before payment.
The LNURLpay flow arriving on InvoiceDialog implicitly triggered payment, this is
now indicated by InvoiceDialog.payImmediately property instead of inferrred from the
QEInvoiceParser isLnurlPay property.
