/* * This file is part of GNU Taler * (C) 2020 Taler Systems S.A. * * GNU Taler is free software; you can redistribute it and/or modify it under the * terms of the GNU General Public License as published by the Free Software * Foundation; either version 3, or (at your option) any later version. * * GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR * A PARTICULAR PURPOSE. See the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along with * GNU Taler; see the file COPYING. If not, see */ package net.taler.wallet import android.os.Bundle import android.view.LayoutInflater import android.view.View import android.view.ViewGroup import androidx.fragment.app.Fragment import androidx.fragment.app.activityViewModels import androidx.lifecycle.Observer import androidx.navigation.fragment.findNavController import kotlinx.android.synthetic.main.fragment_main.* import net.taler.common.EventObserver import net.taler.wallet.CurrencyMode.MULTI import net.taler.wallet.CurrencyMode.SINGLE import net.taler.wallet.balances.BalancesFragment import net.taler.wallet.transactions.TransactionsFragment enum class CurrencyMode { SINGLE, MULTI } class MainFragment : Fragment() { private val model: MainViewModel by activityViewModels() private var currencyMode: CurrencyMode? = null override fun onCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle? ): View? { return inflater.inflate(R.layout.fragment_main, container, false) } override fun onViewCreated(view: View, savedInstanceState: Bundle?) { model.balances.observe(viewLifecycleOwner, Observer { onBalancesChanged(it.values.toList()) }) model.transactionsEvent.observe(viewLifecycleOwner, EventObserver { currency -> // we only need to navigate to a dedicated list, when in multi-currency mode if (currencyMode == MULTI) { model.transactionManager.selectedCurrency = currency findNavController().navigate(R.id.action_nav_main_to_nav_transactions) } }) mainFab.setOnClickListener { scanQrCode(requireActivity()) } } override fun onStart() { super.onStart() model.loadBalances() } private fun onBalancesChanged(balances: List) { val mode = if (balances.size == 1) SINGLE else MULTI if (currencyMode != mode) { val f = if (mode == SINGLE) { model.transactionManager.selectedCurrency = balances[0].available.currency TransactionsFragment() } else { BalancesFragment() } currencyMode = mode childFragmentManager.beginTransaction() .replace(R.id.mainFragmentContainer, f, mode.name) .commitNow() } } }