electrum/gui/kivy/uix/dialogs/lightning_payer.py

from kivy.lang import Builder
from kivy.factory import Factory
from electrum_gui.kivy.i18n import _
import electrum.lightning as lightning

Builder.load_string('''
<LightningPayerDialog@Popup>
    id: s
    name: 'lightning_payer'
    invoice_data: ''
    BoxLayout:
        orientation: "vertical"
        BlueButton:
            text: s.invoice_data if s.invoice_data else _('Lightning invoice')
            shorten: True
            on_release: Clock.schedule_once(lambda dt: app.show_info(_('Copy and paste the lightning invoice using the Paste button, or use the camera to scan a QR code.')))
        GridLayout:
            cols: 4
            size_hint: 1, None
            height: '48dp'
            IconButton:
                id: qr
                on_release: Clock.schedule_once(lambda dt: app.scan_qr(on_complete=s.on_lightning_qr))
                icon: 'atlas://gui/kivy/theming/light/camera'
            Button:
                text: _('Paste')
                on_release: s.do_paste()
            Button:
                text: _('Paste sample')
                on_release: s.do_paste_sample()
            Button:
                text: _('Clear')
                on_release: s.do_clear()
        Button:
            size_hint: 1, None
            height: '48dp'
            text: _('Pay pasted/scanned invoice')
            on_release: s.do_pay()
''')

class LightningPayerDialog(Factory.Popup):
    def __init__(self, app):
        super(LightningPayerDialog, self).__init__()
        self.app = app
    def open(self, *args, **kwargs):
        super(LightningPayerDialog, self).open(*args, **kwargs)
        class FakeQtSignal:
            def emit(self2, data):
                self.app.show_info(data)
        class MyConsole:
            new_lightning_result = FakeQtSignal()
        self.app.wallet.network.lightningrpc.setConsole(MyConsole())
    def dismiss(self, *args, **kwargs):
        super(LightningPayerDialog, self).dismiss(*args, **kwargs)
        self.app.wallet.network.lightningrpc.setConsole(None)
    def do_paste_sample(self):
        self.invoice_data = "lnbc1pvjluezpp5qqqsyqcyq5rqwzqfqqqsyqcyq5rqwzqfqqqsyqcyq5rqwzqfqypqdpl2pkx2ctnv5sxxmmwwd5kgetjypeh2ursdae8g6twvus8g6rfwvs8qun0dfjkxaq8rkx3yf5tcsyz3d73gafnh3cax9rn449d9p5uxz9ezhhypd0elx87sjle52x86fux2ypatgddc6k63n7erqz25le42c4u4ecky03ylcqca784w"
    def do_paste(self):
        contents = self.app._clipboard.paste()
        if not contents:
            self.app.show_info(_("Clipboard is empty"))
            return
        self.invoice_data = contents
    def do_clear(self):
        self.invoice_data = ""
    def do_pay(self):
        lightning.lightningCall(self.app.wallet.network.lightningrpc, "sendpayment")("--pay_req=" + self.invoice_data)
    def on_lightning_qr(self):
        self.app.show_info("Lightning Invoice QR scanning not implemented") #TODO