2efdfb88aa gui: restore Send for external signer (Sjors Provoost)
4b5a6cd149 refactor: helper function signWithExternalSigner() (Sjors Provoost)
026b5b4523 move-only: helper function to present PSBT (Sjors Provoost)
Pull request description:
Fixes#551
For the simplest use case of a wallet with one external signer and "PSBT Controls" disabled in settings (the default), the send dialog will behave the same as when using a wallet with private keys. I.e. there's no "Create Unsigned" button.
When PSBT controls are turned on, you can now actually make a PSBT with signing it; before this PR that button would trigger a sign event and would broadcast the transaction.
In case a multisig, the Send button will sign on the device, and then fall back to presenting a PSBT (same behavior as before #441).
This PR starts with two refactoring commits to move some stuff into a helper function for improved readability in general, and to make the main commit easier to review.
ACKs for top commit:
jonatack:
utACK 2efdfb88aa diff review since my last review, code re-review, rebased to current master, verified clean debug build of each commit
luke-jr:
utACK 2efdfb88aa
Tree-SHA512: e8731a0ef9e87564b2676c7b022b742d9621bba964c19dba9fd9f6961eb608737a9e1a22c0a3c8b2f2f6d583bba067606ee8392422e82082deefb20ea7b88c7c
aece566249