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author | Torsten Grote <t@grobox.de> | 2022-09-06 18:18:47 -0300 |
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committer | Torsten Grote <t@grobox.de> | 2022-09-06 18:18:47 -0300 |
commit | 4fe04766fbf5328d0816f7cd862228a71690fd1c (patch) | |
tree | 289e2c4fbfbd5462b0d4d2e2067227c68b840efa /wallet/src/main/java/net/taler/wallet/ReceiveFundsFragment.kt | |
parent | 3d3108dd40cd8d3395434905463a91b4b3a71d5a (diff) | |
download | taler-android-4fe04766fbf5328d0816f7cd862228a71690fd1c.tar.gz taler-android-4fe04766fbf5328d0816f7cd862228a71690fd1c.tar.bz2 taler-android-4fe04766fbf5328d0816f7cd862228a71690fd1c.zip |
[wallet] implement prototype for outgoing peer transactions
Diffstat (limited to 'wallet/src/main/java/net/taler/wallet/ReceiveFundsFragment.kt')
-rw-r--r-- | wallet/src/main/java/net/taler/wallet/ReceiveFundsFragment.kt | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/wallet/src/main/java/net/taler/wallet/ReceiveFundsFragment.kt b/wallet/src/main/java/net/taler/wallet/ReceiveFundsFragment.kt new file mode 100644 index 0000000..31228a4 --- /dev/null +++ b/wallet/src/main/java/net/taler/wallet/ReceiveFundsFragment.kt @@ -0,0 +1,198 @@ +/* + * This file is part of GNU Taler + * (C) 2022 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 <http://www.gnu.org/licenses/> + */ + +package net.taler.wallet + +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.compose.foundation.layout.Column +import androidx.compose.foundation.layout.Row +import androidx.compose.foundation.layout.fillMaxWidth +import androidx.compose.foundation.layout.padding +import androidx.compose.foundation.rememberScrollState +import androidx.compose.foundation.text.KeyboardOptions +import androidx.compose.foundation.verticalScroll +import androidx.compose.material.Button +import androidx.compose.material.MaterialTheme +import androidx.compose.material.OutlinedTextField +import androidx.compose.material.Surface +import androidx.compose.material.Text +import androidx.compose.runtime.Composable +import androidx.compose.runtime.getValue +import androidx.compose.runtime.mutableStateOf +import androidx.compose.runtime.saveable.rememberSaveable +import androidx.compose.runtime.setValue +import androidx.compose.ui.Alignment +import androidx.compose.ui.Modifier +import androidx.compose.ui.graphics.Color +import androidx.compose.ui.platform.ComposeView +import androidx.compose.ui.res.stringResource +import androidx.compose.ui.text.input.KeyboardType.Companion.Decimal +import androidx.compose.ui.tooling.preview.Preview +import androidx.compose.ui.unit.dp +import androidx.core.os.bundleOf +import androidx.fragment.app.Fragment +import androidx.fragment.app.activityViewModels +import androidx.lifecycle.lifecycleScope +import androidx.navigation.fragment.findNavController +import com.google.android.material.composethemeadapter.MdcTheme +import net.taler.common.Amount +import net.taler.wallet.exchanges.ExchangeItem + +class ReceiveFundsFragment : Fragment() { + private val model: MainViewModel by activityViewModels() + private val exchangeManager get() = model.exchangeManager + + override fun onCreateView( + inflater: LayoutInflater, container: ViewGroup?, + savedInstanceState: Bundle?, + ): View = ComposeView(requireContext()).apply { + setContent { + MdcTheme { + Surface { + ReceiveFundsIntro( + model.transactionManager.selectedCurrency ?: error("No currency selected"), + this@ReceiveFundsFragment::onManualWithdraw, + this@ReceiveFundsFragment::onPeerPull, + ) + } + } + } + } + + override fun onStart() { + super.onStart() + activity?.setTitle(R.string.transactions_receive_funds) + } + + private fun onManualWithdraw(amount: Amount) { + // TODO give some UI feedback while we wait for exchanges to load (quick enough for now) + lifecycleScope.launchWhenResumed { + // we need to set the exchange first, we want to withdraw from + exchangeManager.findExchangeForCurrency(amount.currency).collect { exchange -> + onExchangeRetrieved(exchange, amount) + } + } + } + + private fun onExchangeRetrieved(exchange: ExchangeItem?, amount: Amount) { + if (exchange == null) { + Toast.makeText(requireContext(), "No exchange available", LENGTH_LONG).show() + return + } + exchangeManager.withdrawalExchange = exchange + // now that we have the exchange, we can navigate + val bundle = bundleOf("amount" to amount.toJSONString()) + findNavController().navigate( + R.id.action_receiveFunds_to_nav_exchange_manual_withdrawal, bundle) + } + + private fun onPeerPull(amount: Amount) { + val bundle = bundleOf("amount" to amount.toJSONString()) + findNavController().navigate(R.id.action_receiveFunds_to_nav_peer_pull, bundle) + } +} + +@Composable +private fun ReceiveFundsIntro( + currency: String, + onManualWithdraw: (Amount) -> Unit, + onPeerPull: (Amount) -> Unit, +) { + val scrollState = rememberScrollState() + Column( + modifier = Modifier + .fillMaxWidth() + .verticalScroll(scrollState), + ) { + var text by rememberSaveable { mutableStateOf("") } + var isError by rememberSaveable { mutableStateOf(false) } + Row( + verticalAlignment = Alignment.CenterVertically, + modifier = Modifier + .padding(16.dp), + ) { + OutlinedTextField( + modifier = Modifier + .weight(1f) + .padding(end = 16.dp), + value = text, + keyboardOptions = KeyboardOptions.Default.copy(keyboardType = Decimal), + onValueChange = { input -> + isError = false + text = input.filter { it.isDigit() || it == '.' } + }, + isError = isError, + label = { + if (isError) { + Text( + stringResource(R.string.receive_amount_invalid), + color = Color.Red, + ) + } else { + Text(stringResource(R.string.receive_amount)) + } + } + ) + Text( + modifier = Modifier, + text = currency, + softWrap = false, + style = MaterialTheme.typography.h6, + ) + } + Text( + modifier = Modifier.padding(horizontal = 16.dp), + text = stringResource(R.string.receive_intro), + style = MaterialTheme.typography.h6, + ) + Row(modifier = Modifier.padding(16.dp)) { + Button( + modifier = Modifier + .padding(end = 16.dp) + .weight(1f), + onClick = { + val amount = getAmount(currency, text) + if (amount == null) isError = true + else onManualWithdraw(amount) + }) { + Text(text = stringResource(R.string.receive_withdraw)) + } + Button( + modifier = Modifier.weight(1f), + onClick = { + val amount = getAmount(currency, text) + if (amount == null) isError = true + else onPeerPull(amount) + }, + ) { + Text(text = stringResource(R.string.receive_peer)) + } + } + } +} + +@Preview +@Composable +fun PreviewReceiveFundsIntro() { + Surface { + ReceiveFundsIntro("TESTKUDOS", {}) {} + } +} |