summaryrefslogtreecommitdiff
path: root/wallet/src/main/java/net/taler/wallet/MainFragment.kt
blob: d5bd3fcb0ceda12c421d6f49dc02e80a73a2c0e6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
/*
 * 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 <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 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.BalanceItem
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)
        })
        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())
        }
        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<BalanceItem>) {
        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()
        }
    }

}