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 alertNoPatternMatch(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>> allPatterns = DB.get()
116 allPatterns.observe(getViewLifecycleOwner(), patternHeaders -> {
117 ArrayList<TemplateHeader> matchingPatterns = new ArrayList<>();
119 for (TemplateHeader ph : patternHeaders) {
120 String patternSource = ph.getRegularExpression();
121 if (Misc.emptyIsNull(patternSource) == null)
124 Pattern pattern = Pattern.compile(patternSource);
125 Matcher matcher = pattern.matcher(text);
126 if (!matcher.matches())
129 Logger.debug("pattern",
130 String.format("Pattern '%s' [%s] matches '%s'", ph.getName(),
131 patternSource, text));
132 matchingPatterns.add(ph);
134 catch (ParcelFormatException e) {
136 Logger.debug("pattern",
137 String.format("Error compiling regular expression '%s'", patternSource),
142 if (matchingPatterns.isEmpty())
143 alertNoPatternMatch(text);
144 else if (matchingPatterns.size() == 1)
145 applyPattern(matchingPatterns.get(0), text);
147 choosePattern(matchingPatterns, text);
150 private void choosePattern(ArrayList<TemplateHeader> matchingPatterns, String matchedText) {
151 final String patternNameColumn = "name";
152 AbstractCursor cursor = new AbstractCursor() {
154 public int getCount() {
155 return matchingPatterns.size();
158 public String[] getColumnNames() {
159 return new String[]{"_id", patternNameColumn};
162 public String getString(int column) {
164 return String.valueOf(getPosition());
165 return matchingPatterns.get(getPosition())
169 public short getShort(int column) {
171 return (short) getPosition();
175 public int getInt(int column) {
176 return getShort(column);
179 public long getLong(int column) {
180 return getShort(column);
183 public float getFloat(int column) {
184 return getShort(column);
187 public double getDouble(int column) {
188 return getShort(column);
191 public boolean isNull(int column) {
195 public int getColumnCount() {
200 MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireContext());
201 builder.setCancelable(true)
202 .setTitle(R.string.choose_template_to_apply)
203 .setSingleChoiceItems(cursor, -1, patternNameColumn, (dialog, which) -> {
204 applyPattern(matchingPatterns.get(which), matchedText);
210 private void applyPattern(TemplateHeader patternHeader, String text) {
211 Pattern pattern = Pattern.compile(patternHeader.getRegularExpression());
213 Matcher m = pattern.matcher(text);
216 Snackbar.make(requireView(), R.string.pattern_does_not_match,
217 BaseTransientBottomBar.LENGTH_INDEFINITE)
222 SimpleDate transactionDate;
224 int day = extractIntFromMatches(m, patternHeader.getDateDayMatchGroup(),
225 patternHeader.getDateDay());
226 int month = extractIntFromMatches(m, patternHeader.getDateMonthMatchGroup(),
227 patternHeader.getDateMonth());
228 int year = extractIntFromMatches(m, patternHeader.getDateYearMatchGroup(),
229 patternHeader.getDateYear());
231 SimpleDate today = SimpleDate.today();
239 transactionDate = new SimpleDate(year, month, day);
241 Logger.debug("pattern", "setting transaction date to " + transactionDate);
244 NewTransactionModel.Item head = viewModel.getItem(0);
245 head.ensureType(NewTransactionModel.ItemType.generalData);
246 final String transactionDescription =
247 extractStringFromMatches(m, patternHeader.getTransactionDescriptionMatchGroup(),
248 patternHeader.getTransactionDescription());
249 head.setDescription(transactionDescription);
250 Logger.debug("pattern", "Setting transaction description to " + transactionDescription);
251 final String transactionComment =
252 extractStringFromMatches(m, patternHeader.getTransactionCommentMatchGroup(),
253 patternHeader.getTransactionComment());
254 head.setTransactionComment(transactionComment);
255 Logger.debug("pattern", "Setting transaction comment to " + transactionComment);
256 head.setDate(transactionDate);
257 listAdapter.notifyItemChanged(0);
261 .getTemplateWithAccounts(patternHeader.getId())
262 .observe(getViewLifecycleOwner(), entry -> {
264 final boolean accountsInInitialState = viewModel.accountsInInitialState();
265 for (TemplateAccount acc : entry.accounts) {
268 String accountName = extractStringFromMatches(m, acc.getAccountNameMatchGroup(),
269 acc.getAccountName());
270 String accountComment =
271 extractStringFromMatches(m, acc.getAccountCommentMatchGroup(),
272 acc.getAccountComment());
274 extractFloatFromMatches(m, acc.getAmountMatchGroup(), acc.getAmount());
275 if (amount != null && acc.getNegateAmount() != null && acc.getNegateAmount())
278 if (accountsInInitialState) {
279 NewTransactionModel.Item item = viewModel.getItem(rowIndex);
281 Logger.debug("pattern", String.format(Locale.US,
282 "Adding new account item [%s][c:%s][a:%s]", accountName,
283 accountComment, amount));
284 final LedgerTransactionAccount ledgerAccount =
285 new LedgerTransactionAccount(accountName);
286 ledgerAccount.setComment(accountComment);
288 ledgerAccount.setAmount(amount);
290 viewModel.addAccount(ledgerAccount);
291 listAdapter.notifyItemInserted(viewModel.items.size() - 1);
294 Logger.debug("pattern", String.format(Locale.US,
295 "Stamping account item #%d [%s][c:%s][a:%s]", rowIndex,
296 accountName, accountComment, amount));
298 item.setAccountName(accountName);
299 item.setComment(accountComment);
304 listAdapter.notifyItemChanged(rowIndex);
308 final LedgerTransactionAccount transactionAccount =
309 new LedgerTransactionAccount(accountName);
310 transactionAccount.setComment(accountComment);
312 transactionAccount.setAmount(amount);
314 Logger.debug("pattern", String.format(Locale.US,
315 "Adding trailing account item [%s][c:%s][a:%s]", accountName,
316 accountComment, amount));
318 viewModel.addAccount(transactionAccount);
319 listAdapter.notifyItemInserted(viewModel.items.size() - 1);
323 listAdapter.checkTransactionSubmittable();
326 private int extractIntFromMatches(Matcher m, Integer group, Integer literal) {
332 if (grp > 0 & grp <= m.groupCount())
334 return Integer.parseInt(m.group(grp));
336 catch (NumberFormatException e) {
337 Snackbar.make(requireView(),
338 "Error extracting transaction date: " + e.getMessage(),
339 BaseTransientBottomBar.LENGTH_INDEFINITE)
346 private String extractStringFromMatches(Matcher m, Integer group, String literal) {
352 if (grp > 0 & grp <= m.groupCount())
358 private Float extractFloatFromMatches(Matcher m, Integer group, Float literal) {
364 if (grp > 0 & grp <= m.groupCount())
366 return Float.valueOf(m.group(grp));
368 catch (NumberFormatException e) {
369 Snackbar.make(requireView(),
370 "Error extracting transaction amount: " + e.getMessage(),
371 BaseTransientBottomBar.LENGTH_INDEFINITE)
379 public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
380 super.onCreateOptionsMenu(menu, inflater);
381 final FragmentActivity activity = getActivity();
383 inflater.inflate(R.menu.new_transaction_fragment, menu);
385 menu.findItem(R.id.scan_qr)
386 .setOnMenuItemClickListener(this::onScanQrAction);
388 menu.findItem(R.id.action_reset_new_transaction_activity)
389 .setOnMenuItemClickListener(item -> {
394 final MenuItem toggleCurrencyItem = menu.findItem(R.id.toggle_currency);
395 toggleCurrencyItem.setOnMenuItemClickListener(item -> {
396 viewModel.toggleCurrencyVisible();
399 if (activity != null)
400 viewModel.showCurrency.observe(activity, toggleCurrencyItem::setChecked);
402 final MenuItem toggleCommentsItem = menu.findItem(R.id.toggle_comments);
403 toggleCommentsItem.setOnMenuItemClickListener(item -> {
404 viewModel.toggleShowComments();
407 if (activity != null)
408 viewModel.showComments.observe(activity, toggleCommentsItem::setChecked);
410 private boolean onScanQrAction(MenuItem item) {
412 scanQrLauncher.launch(null);
414 catch (Exception e) {
415 Logger.debug("qr", "Error launching QR scanner", e);
421 public View onCreateView(LayoutInflater inflater, ViewGroup container,
422 Bundle savedInstanceState) {
423 // Inflate the layout for this fragment
424 return inflater.inflate(R.layout.fragment_new_transaction, container, false);
428 public void onViewCreated(@NotNull View view, @Nullable Bundle savedInstanceState) {
429 super.onViewCreated(view, savedInstanceState);
430 FragmentActivity activity = getActivity();
431 if (activity == null)
432 throw new RSInvalidStateException(
433 "getActivity() returned null within onActivityCreated()");
435 viewModel = new ViewModelProvider(activity).get(NewTransactionModel.class);
436 viewModel.observeDataProfile(this);
437 mProfile = Data.getProfile();
438 listAdapter = new NewTransactionItemsAdapter(viewModel, mProfile);
440 RecyclerView list = activity.findViewById(R.id.new_transaction_accounts);
441 list.setAdapter(listAdapter);
442 list.setLayoutManager(new LinearLayoutManager(activity));
444 Data.observeProfile(getViewLifecycleOwner(), profile -> {
446 listAdapter.setProfile(profile);
448 listAdapter.notifyDataSetChanged();
449 viewModel.isSubmittable()
450 .observe(getViewLifecycleOwner(), isSubmittable -> {
462 // viewModel.checkTransactionSubmittable(listAdapter);
464 fab = activity.findViewById(R.id.fabAdd);
465 fab.setOnClickListener(v -> onFabPressed());
467 boolean keep = false;
469 Bundle args = getArguments();
471 String error = args.getString("error");
473 Logger.debug("new-trans-f", String.format("Got error: %s", error));
475 Context context = getContext();
476 if (context != null) {
477 AlertDialog.Builder builder = new AlertDialog.Builder(context);
478 final Resources resources = context.getResources();
479 final StringBuilder message = new StringBuilder();
480 message.append(resources.getString(R.string.err_json_send_error_head));
481 message.append("\n\n");
482 message.append(error);
483 if (mProfile.getApiVersion()
486 resources.getString(R.string.err_json_send_error_unsupported));
488 message.append(resources.getString(R.string.err_json_send_error_tail));
489 builder.setPositiveButton(R.string.btn_profile_options, (dialog, which) -> {
490 Logger.debug("error", "will start profile editor");
491 MobileLedgerProfile.startEditProfileActivity(context, mProfile);
494 builder.setMessage(message);
499 Snackbar.make(list, error, Snackbar.LENGTH_INDEFINITE)
507 if (savedInstanceState != null) {
508 keep |= savedInstanceState.getBoolean("keep", true);
509 focused = savedInstanceState.getInt("focused", 0);
515 viewModel.setFocusedItem(focused);
518 ProgressBar p = activity.findViewById(R.id.progressBar);
519 viewModel.observeBusyFlag(getViewLifecycleOwner(), isBusy -> {
521 // Handler h = new Handler();
522 // h.postDelayed(() -> {
523 // if (viewModel.getBusyFlag())
524 // p.setVisibility(View.VISIBLE);
527 p.setVisibility(View.VISIBLE);
530 p.setVisibility(View.INVISIBLE);
534 public void onSaveInstanceState(@NonNull Bundle outState) {
535 super.onSaveInstanceState(outState);
536 outState.putBoolean("keep", true);
537 final int focusedItem = viewModel.getFocusedItem();
538 outState.putInt("focused", focusedItem);
540 private void onFabPressed() {
542 Misc.hideSoftKeyboard(this);
543 if (mListener != null) {
544 SimpleDate date = viewModel.getDate();
545 LedgerTransaction tr =
546 new LedgerTransaction(null, date, viewModel.getDescription(), mProfile);
548 tr.setComment(viewModel.getComment());
549 LedgerTransactionAccount emptyAmountAccount = null;
550 float emptyAmountAccountBalance = 0;
551 for (int i = 0; i < viewModel.getAccountCount(); i++) {
552 LedgerTransactionAccount acc =
553 new LedgerTransactionAccount(viewModel.getAccount(i));
554 if (acc.getAccountName()
559 if (acc.isAmountSet()) {
560 emptyAmountAccountBalance += acc.getAmount();
563 emptyAmountAccount = acc;
569 if (emptyAmountAccount != null)
570 emptyAmountAccount.setAmount(-emptyAmountAccountBalance);
572 mListener.onTransactionSave(tr);
577 public void onAttach(@NotNull Context context) {
578 super.onAttach(context);
579 if (context instanceof OnNewTransactionFragmentInteractionListener) {
580 mListener = (OnNewTransactionFragmentInteractionListener) context;
583 throw new RuntimeException(
584 context.toString() + " must implement OnFragmentInteractionListener");
589 public void onDetach() {
595 * This interface must be implemented by activities that contain this
596 * fragment to allow an interaction in this fragment to be communicated
597 * to the activity and potentially other fragments contained in that
600 * See the Android Training lesson <a href=
601 * "http://developer.android.com/training/basics/fragments/communicating.html"
602 * >Communicating with Other Fragments</a> for more information.
604 public interface OnNewTransactionFragmentInteractionListener {
605 void onTransactionSave(LedgerTransaction tr);