From 1c8da5aea284a0299840721afc86dae75b16ba78 Mon Sep 17 00:00:00 2001 From: Torsten Grote Date: Fri, 17 Jul 2020 13:30:48 -0300 Subject: [wallet] show list of known exchanges in settings --- .../net/taler/wallet/exchanges/ExchangeAdapter.kt | 66 +++++++++++++++++++++ .../taler/wallet/exchanges/ExchangeListFragment.kt | 68 ++++++++++++++++++++++ .../net/taler/wallet/exchanges/ExchangeManager.kt | 65 +++++++++++++++++++++ 3 files changed, 199 insertions(+) create mode 100644 wallet/src/main/java/net/taler/wallet/exchanges/ExchangeAdapter.kt create mode 100644 wallet/src/main/java/net/taler/wallet/exchanges/ExchangeListFragment.kt create mode 100644 wallet/src/main/java/net/taler/wallet/exchanges/ExchangeManager.kt (limited to 'wallet/src/main/java/net/taler/wallet/exchanges') diff --git a/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeAdapter.kt b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeAdapter.kt new file mode 100644 index 0000000..f53ce46 --- /dev/null +++ b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeAdapter.kt @@ -0,0 +1,66 @@ +/* + * 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.view.LayoutInflater +import android.view.View +import android.view.ViewGroup +import android.widget.TextView +import androidx.recyclerview.widget.RecyclerView +import net.taler.wallet.R +import net.taler.wallet.cleanExchange +import net.taler.wallet.exchanges.ExchangeAdapter.ExchangeItemViewHolder + +data class ExchangeItem( + val exchangeBaseUrl: String, + val currency: String, + val paytoUris: List +) + +internal class ExchangeAdapter : RecyclerView.Adapter() { + + private val items = ArrayList() + + override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ExchangeItemViewHolder { + val view = LayoutInflater.from(parent.context) + .inflate(R.layout.list_item_exchange, parent, false) + return ExchangeItemViewHolder(view) + } + + override fun getItemCount() = items.size + + override fun onBindViewHolder(holder: ExchangeItemViewHolder, position: Int) { + holder.bind(items[position]) + } + + fun update(newItems: List) { + items.clear() + items.addAll(newItems) + notifyDataSetChanged() + } + + internal inner class ExchangeItemViewHolder(v: View) : RecyclerView.ViewHolder(v) { + private val context = v.context + private val urlView: TextView = v.findViewById(R.id.urlView) + private val currencyView: TextView = v.findViewById(R.id.currencyView) + fun bind(item: ExchangeItem) { + urlView.text = cleanExchange(item.exchangeBaseUrl) + currencyView.text = context.getString(R.string.exchange_list_currency, item.currency) + } + } + +} diff --git a/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeListFragment.kt b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeListFragment.kt new file mode 100644 index 0000000..9d0c493 --- /dev/null +++ b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeListFragment.kt @@ -0,0 +1,68 @@ +/* + * 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 androidx.fragment.app.Fragment +import androidx.fragment.app.activityViewModels +import androidx.lifecycle.Observer +import androidx.recyclerview.widget.DividerItemDecoration +import androidx.recyclerview.widget.LinearLayoutManager +import kotlinx.android.synthetic.main.fragment_exchange_list.* +import net.taler.common.fadeIn +import net.taler.common.fadeOut +import net.taler.wallet.MainViewModel +import net.taler.wallet.R + +class ExchangeListFragment : Fragment() { + + private val model: MainViewModel by activityViewModels() + private val exchangeManager by lazy { model.exchangeManager } + private val exchangeAdapter by lazy { ExchangeAdapter() } + + override fun onCreateView( + inflater: LayoutInflater, container: ViewGroup?, + savedInstanceState: Bundle? + ): View? { + return inflater.inflate(R.layout.fragment_exchange_list, container, false) + } + + override fun onViewCreated(view: View, savedInstanceState: Bundle?) { + list.apply { + adapter = exchangeAdapter + addItemDecoration(DividerItemDecoration(context, LinearLayoutManager.VERTICAL)) + } + + exchangeManager.progress.observe(viewLifecycleOwner, Observer { show -> + if (show) progressBar.fadeIn() else progressBar.fadeOut() + }) + exchangeManager.exchanges.observe(viewLifecycleOwner, Observer { exchanges -> + exchangeAdapter.update(exchanges) + if (exchanges.isEmpty()) { + emptyState.fadeIn() + list.fadeOut() + } else { + emptyState.fadeOut() + list.fadeIn() + } + }) + } + +} diff --git a/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeManager.kt b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeManager.kt new file mode 100644 index 0000000..fe8ac76 --- /dev/null +++ b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeManager.kt @@ -0,0 +1,65 @@ +/* + * 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.util.Log +import androidx.lifecycle.LiveData +import androidx.lifecycle.MutableLiveData +import com.fasterxml.jackson.databind.ObjectMapper +import com.fasterxml.jackson.module.kotlin.readValue +import net.taler.wallet.TAG +import net.taler.wallet.backend.WalletBackendApi +import org.json.JSONObject + +class ExchangeManager( + private val walletBackendApi: WalletBackendApi, + private val mapper: ObjectMapper +) { + + private val mProgress = MutableLiveData() + val progress: LiveData = mProgress + + private val mExchanges = MutableLiveData>() + val exchanges: LiveData> get() = list() + + fun add(exchangeUrl: String) { + val args = JSONObject().apply { put("exchangeBaseUrl", exchangeUrl) } + walletBackendApi.sendRequest("addExchange", args) { isError, result -> + if (isError) { + Log.e(TAG, "add Error: $result") + } else { + Log.e(TAG, "add Success: $result") + } + } + } + + private fun list(): LiveData> { + mProgress.value = true + walletBackendApi.sendRequest("listExchanges", JSONObject()) { isError, result -> + if (isError) { + throw AssertionError("Wallet core failed to return exchanges!") + } else { + val exchanges: List = mapper.readValue(result.getString("exchanges")) + Log.e(TAG, "list Success: $exchanges") + mProgress.value = false + mExchanges.value = exchanges + } + } + return mExchanges + } + +} -- cgit v1.2.3