2 * Copyright © 2021 Damyan Ivanov.
3 * This file is part of MoLe.
4 * MoLe is free software: you can distribute it and/or modify it
5 * under the term of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your opinion), any later version.
9 * MoLe is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License terms for details.
14 * You should have received a copy of the GNU General Public License
15 * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
18 package net.ktnx.mobileledger.ui.new_transaction;
20 import android.content.Context;
21 import android.content.Intent;
22 import android.content.res.Resources;
23 import android.database.AbstractCursor;
24 import android.os.Bundle;
25 import android.os.ParcelFormatException;
26 import android.renderscript.RSInvalidStateException;
27 import android.view.LayoutInflater;
28 import android.view.Menu;
29 import android.view.MenuInflater;
30 import android.view.MenuItem;
31 import android.view.View;
32 import android.view.ViewGroup;
33 import android.widget.ProgressBar;
35 import androidx.annotation.NonNull;
36 import androidx.annotation.Nullable;
37 import androidx.appcompat.app.AlertDialog;
38 import androidx.fragment.app.Fragment;
39 import androidx.fragment.app.FragmentActivity;
40 import androidx.lifecycle.LiveData;
41 import androidx.lifecycle.ViewModelProvider;
42 import androidx.recyclerview.widget.LinearLayoutManager;
43 import androidx.recyclerview.widget.RecyclerView;
45 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
46 import com.google.android.material.floatingactionbutton.FloatingActionButton;
47 import com.google.android.material.snackbar.BaseTransientBottomBar;
48 import com.google.android.material.snackbar.Snackbar;
50 import net.ktnx.mobileledger.R;
51 import net.ktnx.mobileledger.db.DB;
52 import net.ktnx.mobileledger.db.TemplateAccount;
53 import net.ktnx.mobileledger.db.TemplateHeader;
54 import net.ktnx.mobileledger.json.API;
55 import net.ktnx.mobileledger.model.Data;
56 import net.ktnx.mobileledger.model.LedgerTransaction;
57 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
58 import net.ktnx.mobileledger.model.MobileLedgerProfile;
59 import net.ktnx.mobileledger.ui.QRScanCapableFragment;
60 import net.ktnx.mobileledger.ui.templates.TemplatesActivity;
61 import net.ktnx.mobileledger.utils.Logger;
62 import net.ktnx.mobileledger.utils.Misc;
63 import net.ktnx.mobileledger.utils.SimpleDate;
65 import org.jetbrains.annotations.NotNull;
67 import java.util.ArrayList;
68 import java.util.List;
69 import java.util.Locale;
70 import java.util.regex.Matcher;
71 import java.util.regex.Pattern;
74 * A simple {@link Fragment} subclass.
75 * Activities that contain this fragment must implement the
76 * {@link OnNewTransactionFragmentInteractionListener} interface
77 * to handle interaction events.
80 // TODO: offer to undo account remove-on-swipe
82 public class NewTransactionFragment extends QRScanCapableFragment {
83 private NewTransactionItemsAdapter listAdapter;
84 private NewTransactionModel viewModel;
85 private FloatingActionButton fab;
86 private OnNewTransactionFragmentInteractionListener mListener;
87 private MobileLedgerProfile mProfile;
88 public NewTransactionFragment() {
89 // Required empty public constructor
90 setHasOptionsMenu(true);
92 private void startNewPatternActivity(String scanned) {
93 Intent intent = new Intent(requireContext(), TemplatesActivity.class);
94 Bundle args = new Bundle();
95 args.putString(TemplatesActivity.ARG_ADD_TEMPLATE, scanned);
96 requireContext().startActivity(intent, args);
98 private void alertNoTemplateMatch(String scanned) {
99 MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireContext());
100 builder.setCancelable(true)
101 .setMessage(R.string.no_template_matches)
102 .setPositiveButton(R.string.add_button,
103 (dialog, which) -> startNewPatternActivity(scanned))
107 protected void onQrScanned(String text) {
108 Logger.debug("qr", String.format("Got QR scan result [%s]", text));
110 if (Misc.emptyIsNull(text) == null)
113 LiveData<List<TemplateHeader>> allTemplates = DB.get()
116 allTemplates.observe(getViewLifecycleOwner(), templateHeaders -> {
117 ArrayList<TemplateHeader> matchingFallbackTemplates = new ArrayList<>();
118 ArrayList<TemplateHeader> matchingTemplates = new ArrayList<>();
120 for (TemplateHeader ph : templateHeaders) {
121 String patternSource = ph.getRegularExpression();
122 if (Misc.emptyIsNull(patternSource) == null)
125 Pattern pattern = Pattern.compile(patternSource);
126 Matcher matcher = pattern.matcher(text);
127 if (!matcher.matches())
130 Logger.debug("pattern",
131 String.format("Pattern '%s' [%s] matches '%s'", ph.getName(),
132 patternSource, text));
134 matchingFallbackTemplates.add(ph);
136 matchingTemplates.add(ph);
138 catch (ParcelFormatException e) {
140 Logger.debug("pattern",
141 String.format("Error compiling regular expression '%s'", patternSource),
146 if (matchingTemplates.isEmpty())
147 matchingTemplates = matchingFallbackTemplates;
149 if (matchingTemplates.isEmpty())
150 alertNoTemplateMatch(text);
151 else if (matchingTemplates.size() == 1)
152 applyTemplate(matchingTemplates.get(0), text);
154 chooseTemplate(matchingTemplates, text);
157 private void chooseTemplate(ArrayList<TemplateHeader> matchingTemplates, String matchedText) {
158 final String templateNameColumn = "name";
159 AbstractCursor cursor = new AbstractCursor() {
161 public int getCount() {
162 return matchingTemplates.size();
165 public String[] getColumnNames() {
166 return new String[]{"_id", templateNameColumn};
169 public String getString(int column) {
171 return String.valueOf(getPosition());
172 return matchingTemplates.get(getPosition())
176 public short getShort(int column) {
178 return (short) getPosition();
182 public int getInt(int column) {
183 return getShort(column);
186 public long getLong(int column) {
187 return getShort(column);
190 public float getFloat(int column) {
191 return getShort(column);
194 public double getDouble(int column) {
195 return getShort(column);
198 public boolean isNull(int column) {
202 public int getColumnCount() {
207 MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireContext());
208 builder.setCancelable(true)
209 .setTitle(R.string.choose_template_to_apply)
210 .setIcon(R.drawable.ic_baseline_auto_graph_24)
211 .setSingleChoiceItems(cursor, -1, templateNameColumn, (dialog, which) -> {
212 applyTemplate(matchingTemplates.get(which), matchedText);
218 private void applyTemplate(TemplateHeader patternHeader, String text) {
219 Pattern pattern = Pattern.compile(patternHeader.getRegularExpression());
221 Matcher m = pattern.matcher(text);
224 Snackbar.make(requireView(), R.string.pattern_does_not_match,
225 BaseTransientBottomBar.LENGTH_INDEFINITE)
230 SimpleDate transactionDate;
232 int day = extractIntFromMatches(m, patternHeader.getDateDayMatchGroup(),
233 patternHeader.getDateDay());
234 int month = extractIntFromMatches(m, patternHeader.getDateMonthMatchGroup(),
235 patternHeader.getDateMonth());
236 int year = extractIntFromMatches(m, patternHeader.getDateYearMatchGroup(),
237 patternHeader.getDateYear());
239 SimpleDate today = SimpleDate.today();
247 transactionDate = new SimpleDate(year, month, day);
249 Logger.debug("pattern", "setting transaction date to " + transactionDate);
252 NewTransactionModel.Item head = viewModel.getItem(0);
253 head.ensureType(NewTransactionModel.ItemType.generalData);
254 final String transactionDescription =
255 extractStringFromMatches(m, patternHeader.getTransactionDescriptionMatchGroup(),
256 patternHeader.getTransactionDescription());
257 head.setDescription(transactionDescription);
258 Logger.debug("pattern", "Setting transaction description to " + transactionDescription);
259 final String transactionComment =
260 extractStringFromMatches(m, patternHeader.getTransactionCommentMatchGroup(),
261 patternHeader.getTransactionComment());
262 head.setTransactionComment(transactionComment);
263 Logger.debug("pattern", "Setting transaction comment to " + transactionComment);
264 head.setDate(transactionDate);
265 listAdapter.notifyItemChanged(0);
269 .getTemplateWithAccounts(patternHeader.getId())
270 .observe(getViewLifecycleOwner(), entry -> {
272 final boolean accountsInInitialState = viewModel.accountsInInitialState();
273 for (TemplateAccount acc : entry.accounts) {
276 String accountName = extractStringFromMatches(m, acc.getAccountNameMatchGroup(),
277 acc.getAccountName());
278 String accountComment =
279 extractStringFromMatches(m, acc.getAccountCommentMatchGroup(),
280 acc.getAccountComment());
282 extractFloatFromMatches(m, acc.getAmountMatchGroup(), acc.getAmount());
283 if (amount != null && acc.getNegateAmount() != null && acc.getNegateAmount())
286 if (accountsInInitialState) {
287 NewTransactionModel.Item item = viewModel.getItem(rowIndex);
289 Logger.debug("pattern", String.format(Locale.US,
290 "Adding new account item [%s][c:%s][a:%s]", accountName,
291 accountComment, amount));
292 final LedgerTransactionAccount ledgerAccount =
293 new LedgerTransactionAccount(accountName);
294 ledgerAccount.setComment(accountComment);
296 ledgerAccount.setAmount(amount);
298 viewModel.addAccount(ledgerAccount);
299 listAdapter.notifyItemInserted(viewModel.items.size() - 1);
302 Logger.debug("pattern", String.format(Locale.US,
303 "Stamping account item #%d [%s][c:%s][a:%s]", rowIndex,
304 accountName, accountComment, amount));
306 item.setAccountName(accountName);
307 item.setComment(accountComment);
312 listAdapter.notifyItemChanged(rowIndex);
316 final LedgerTransactionAccount transactionAccount =
317 new LedgerTransactionAccount(accountName);
318 transactionAccount.setComment(accountComment);
320 transactionAccount.setAmount(amount);
322 Logger.debug("pattern", String.format(Locale.US,
323 "Adding trailing account item [%s][c:%s][a:%s]", accountName,
324 accountComment, amount));
326 viewModel.addAccount(transactionAccount);
327 listAdapter.notifyItemInserted(viewModel.items.size() - 1);
331 listAdapter.checkTransactionSubmittable();
334 private int extractIntFromMatches(Matcher m, Integer group, Integer literal) {
340 if (grp > 0 & grp <= m.groupCount())
342 return Integer.parseInt(m.group(grp));
344 catch (NumberFormatException e) {
345 Snackbar.make(requireView(),
346 "Error extracting transaction date: " + e.getMessage(),
347 BaseTransientBottomBar.LENGTH_INDEFINITE)
354 private String extractStringFromMatches(Matcher m, Integer group, String literal) {
360 if (grp > 0 & grp <= m.groupCount())
366 private Float extractFloatFromMatches(Matcher m, Integer group, Float literal) {
372 if (grp > 0 & grp <= m.groupCount())
374 return Float.valueOf(m.group(grp));
376 catch (NumberFormatException e) {
377 Snackbar.make(requireView(),
378 "Error extracting transaction amount: " + e.getMessage(),
379 BaseTransientBottomBar.LENGTH_INDEFINITE)
387 public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
388 super.onCreateOptionsMenu(menu, inflater);
389 final FragmentActivity activity = getActivity();
391 inflater.inflate(R.menu.new_transaction_fragment, menu);
393 menu.findItem(R.id.scan_qr)
394 .setOnMenuItemClickListener(this::onScanQrAction);
396 menu.findItem(R.id.action_reset_new_transaction_activity)
397 .setOnMenuItemClickListener(item -> {
402 final MenuItem toggleCurrencyItem = menu.findItem(R.id.toggle_currency);
403 toggleCurrencyItem.setOnMenuItemClickListener(item -> {
404 viewModel.toggleCurrencyVisible();
407 if (activity != null)
408 viewModel.showCurrency.observe(activity, toggleCurrencyItem::setChecked);
410 final MenuItem toggleCommentsItem = menu.findItem(R.id.toggle_comments);
411 toggleCommentsItem.setOnMenuItemClickListener(item -> {
412 viewModel.toggleShowComments();
415 if (activity != null)
416 viewModel.showComments.observe(activity, toggleCommentsItem::setChecked);
418 private boolean onScanQrAction(MenuItem item) {
420 scanQrLauncher.launch(null);
422 catch (Exception e) {
423 Logger.debug("qr", "Error launching QR scanner", e);
429 public View onCreateView(LayoutInflater inflater, ViewGroup container,
430 Bundle savedInstanceState) {
431 // Inflate the layout for this fragment
432 return inflater.inflate(R.layout.fragment_new_transaction, container, false);
436 public void onViewCreated(@NotNull View view, @Nullable Bundle savedInstanceState) {
437 super.onViewCreated(view, savedInstanceState);
438 FragmentActivity activity = getActivity();
439 if (activity == null)
440 throw new RSInvalidStateException(
441 "getActivity() returned null within onActivityCreated()");
443 viewModel = new ViewModelProvider(activity).get(NewTransactionModel.class);
444 viewModel.observeDataProfile(this);
445 mProfile = Data.getProfile();
446 listAdapter = new NewTransactionItemsAdapter(viewModel, mProfile);
448 RecyclerView list = activity.findViewById(R.id.new_transaction_accounts);
449 list.setAdapter(listAdapter);
450 list.setLayoutManager(new LinearLayoutManager(activity));
452 Data.observeProfile(getViewLifecycleOwner(), profile -> {
454 listAdapter.setProfile(profile);
456 listAdapter.notifyDataSetChanged();
457 viewModel.isSubmittable()
458 .observe(getViewLifecycleOwner(), isSubmittable -> {
470 // viewModel.checkTransactionSubmittable(listAdapter);
472 fab = activity.findViewById(R.id.fabAdd);
473 fab.setOnClickListener(v -> onFabPressed());
475 boolean keep = false;
477 Bundle args = getArguments();
479 String error = args.getString("error");
481 Logger.debug("new-trans-f", String.format("Got error: %s", error));
483 Context context = getContext();
484 if (context != null) {
485 AlertDialog.Builder builder = new AlertDialog.Builder(context);
486 final Resources resources = context.getResources();
487 final StringBuilder message = new StringBuilder();
488 message.append(resources.getString(R.string.err_json_send_error_head));
489 message.append("\n\n");
490 message.append(error);
491 if (mProfile.getApiVersion()
494 resources.getString(R.string.err_json_send_error_unsupported));
496 message.append(resources.getString(R.string.err_json_send_error_tail));
497 builder.setPositiveButton(R.string.btn_profile_options, (dialog, which) -> {
498 Logger.debug("error", "will start profile editor");
499 MobileLedgerProfile.startEditProfileActivity(context, mProfile);
502 builder.setMessage(message);
507 Snackbar.make(list, error, Snackbar.LENGTH_INDEFINITE)
515 if (savedInstanceState != null) {
516 keep |= savedInstanceState.getBoolean("keep", true);
517 focused = savedInstanceState.getInt("focused", 0);
523 viewModel.setFocusedItem(focused);
526 ProgressBar p = activity.findViewById(R.id.progressBar);
527 viewModel.observeBusyFlag(getViewLifecycleOwner(), isBusy -> {
529 // Handler h = new Handler();
530 // h.postDelayed(() -> {
531 // if (viewModel.getBusyFlag())
532 // p.setVisibility(View.VISIBLE);
535 p.setVisibility(View.VISIBLE);
538 p.setVisibility(View.INVISIBLE);
542 public void onSaveInstanceState(@NonNull Bundle outState) {
543 super.onSaveInstanceState(outState);
544 outState.putBoolean("keep", true);
545 final int focusedItem = viewModel.getFocusedItem();
546 outState.putInt("focused", focusedItem);
548 private void onFabPressed() {
550 Misc.hideSoftKeyboard(this);
551 if (mListener != null) {
552 SimpleDate date = viewModel.getDate();
553 LedgerTransaction tr =
554 new LedgerTransaction(null, date, viewModel.getDescription(), mProfile);
556 tr.setComment(viewModel.getComment());
557 LedgerTransactionAccount emptyAmountAccount = null;
558 float emptyAmountAccountBalance = 0;
559 for (int i = 0; i < viewModel.getAccountCount(); i++) {
560 LedgerTransactionAccount acc =
561 new LedgerTransactionAccount(viewModel.getAccount(i));
562 if (acc.getAccountName()
567 if (acc.isAmountSet()) {
568 emptyAmountAccountBalance += acc.getAmount();
571 emptyAmountAccount = acc;
577 if (emptyAmountAccount != null)
578 emptyAmountAccount.setAmount(-emptyAmountAccountBalance);
580 mListener.onTransactionSave(tr);
585 public void onAttach(@NotNull Context context) {
586 super.onAttach(context);
587 if (context instanceof OnNewTransactionFragmentInteractionListener) {
588 mListener = (OnNewTransactionFragmentInteractionListener) context;
591 throw new RuntimeException(
592 context.toString() + " must implement OnFragmentInteractionListener");
597 public void onDetach() {
603 * This interface must be implemented by activities that contain this
604 * fragment to allow an interaction in this fragment to be communicated
605 * to the activity and potentially other fragments contained in that
608 * See the Android Training lesson <a href=
609 * "http://developer.android.com/training/basics/fragments/communicating.html"
610 * >Communicating with Other Fragments</a> for more information.
612 public interface OnNewTransactionFragmentInteractionListener {
613 void onTransactionSave(LedgerTransaction tr);