/* * 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.navigation.fragment.findNavController import net.taler.common.EventObserver import net.taler.wallet.CurrencyMode.MULTI import net.taler.wallet.CurrencyMode.SINGLE import net.taler.wallet.balances.BalanceItem import net.taler.wallet.balances.BalancesFragment import net.taler.wallet.databinding.FragmentMainBinding 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 private lateinit var ui: FragmentMainBinding override fun onCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle? ): View? { ui = FragmentMainBinding.inflate(inflater, container, false) return ui.root } override fun onViewCreated(view: View, savedInstanceState: Bundle?) { model.balances.observe(viewLifecycleOwner, { onBalancesChanged(it) }) 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) } }) ui.mainFab.setOnClickListener { scanQrCode(requireActivity()) } ui.mainFab.setOnLongClickListener { findNavController().navigate(R.id.action_nav_main_to_nav_uri_input) true } } 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() } } }