/* * 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.exchanges import android.os.Bundle import android.view.LayoutInflater import android.view.View import android.view.ViewGroup import android.widget.Toast import android.widget.Toast.LENGTH_LONG import androidx.fragment.app.Fragment import androidx.fragment.app.activityViewModels import androidx.navigation.fragment.findNavController import androidx.recyclerview.widget.DividerItemDecoration import androidx.recyclerview.widget.LinearLayoutManager.VERTICAL import net.taler.common.EventObserver import net.taler.common.fadeIn import net.taler.common.fadeOut import net.taler.wallet.MainViewModel import net.taler.wallet.R import net.taler.wallet.databinding.FragmentExchangeListBinding open class ExchangeListFragment : Fragment(), ExchangeClickListener { protected val model: MainViewModel by activityViewModels() private val exchangeManager by lazy { model.exchangeManager } protected lateinit var ui: FragmentExchangeListBinding protected open val isSelectOnly = false private val exchangeAdapter by lazy { ExchangeAdapter(isSelectOnly, this) } override fun onCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?, ): View? { ui = FragmentExchangeListBinding.inflate(inflater, container, false) return ui.root } override fun onViewCreated(view: View, savedInstanceState: Bundle?) { ui.list.apply { adapter = exchangeAdapter addItemDecoration(DividerItemDecoration(context, VERTICAL)) } ui.addExchangeFab.setOnClickListener { AddExchangeDialogFragment().show(parentFragmentManager, "ADD_EXCHANGE") } exchangeManager.progress.observe(viewLifecycleOwner, { show -> if (show) ui.progressBar.fadeIn() else ui.progressBar.fadeOut() }) exchangeManager.exchanges.observe(viewLifecycleOwner, { exchanges -> onExchangeUpdate(exchanges) }) exchangeManager.addError.observe(viewLifecycleOwner, EventObserver { error -> if (error) onAddExchangeFailed() }) } protected open fun onExchangeUpdate(exchanges: List) { exchangeAdapter.update(exchanges) if (exchanges.isEmpty()) { ui.emptyState.fadeIn() ui.list.fadeOut() } else { ui.emptyState.fadeOut() ui.list.fadeIn() } } private fun onAddExchangeFailed() { Toast.makeText(requireContext(), R.string.exchange_add_error, LENGTH_LONG).show() } override fun onExchangeSelected(item: ExchangeItem) { throw AssertionError("must not get triggered here") } override fun onManualWithdraw(item: ExchangeItem) { exchangeManager.withdrawalExchange = item findNavController().navigate(R.id.action_nav_settings_exchanges_to_nav_exchange_manual_withdrawal) } }