new transaction: advance to next field upon autocompletion of account name or description
[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / ui / activity / NewTransactionActivity.java
1 /*
2  * Copyright © 2019 Damyan Ivanov.
3  * This file is part of Mobile-Ledger.
4  * Mobile-Ledger 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.
8  *
9  * Mobile-Ledger 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.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with Mobile-Ledger. If not, see <https://www.gnu.org/licenses/>.
16  */
17
18 package net.ktnx.mobileledger.ui.activity;
19
20 import android.annotation.SuppressLint;
21 import android.os.Bundle;
22 import android.support.design.widget.BaseTransientBottomBar;
23 import android.support.design.widget.Snackbar;
24 import android.support.v4.app.DialogFragment;
25 import android.support.v7.app.AppCompatActivity;
26 import android.support.v7.widget.Toolbar;
27 import android.text.Editable;
28 import android.text.InputType;
29 import android.text.TextWatcher;
30 import android.util.Log;
31 import android.util.TypedValue;
32 import android.view.Gravity;
33 import android.view.Menu;
34 import android.view.MenuItem;
35 import android.view.MotionEvent;
36 import android.view.View;
37 import android.view.inputmethod.EditorInfo;
38 import android.widget.AutoCompleteTextView;
39 import android.widget.EditText;
40 import android.widget.ProgressBar;
41 import android.widget.TableLayout;
42 import android.widget.TableRow;
43 import android.widget.TextView;
44
45 import net.ktnx.mobileledger.R;
46 import net.ktnx.mobileledger.async.SaveTransactionTask;
47 import net.ktnx.mobileledger.async.TaskCallback;
48 import net.ktnx.mobileledger.model.LedgerTransaction;
49 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
50 import net.ktnx.mobileledger.ui.DatePickerFragment;
51 import net.ktnx.mobileledger.ui.OnSwipeTouchListener;
52 import net.ktnx.mobileledger.utils.MLDB;
53
54 import java.util.Date;
55 import java.util.Objects;
56
57 /*
58  * TODO: nicer progress while transaction is submitted
59  * TODO: latest transactions, maybe with browsing further in the past?
60  * TODO: reports
61  * TODO: get rid of the custom session/cookie and auth code?
62  *         (the last problem with the POST was the missing content-length header)
63  * TODO: app icon
64  * TODO: nicer swiping removal with visual feedback
65  * TODO: setup wizard
66  * TODO: update accounts/check settings upon change of backend settings
67  *  */
68
69 public class NewTransactionActivity extends AppCompatActivity implements TaskCallback {
70     private static SaveTransactionTask saver;
71     private TableLayout table;
72     private ProgressBar progress;
73     private TextView text_date;
74     private AutoCompleteTextView text_descr;
75     private MenuItem mSave;
76
77     @Override
78     protected void onCreate(Bundle savedInstanceState) {
79         super.onCreate(savedInstanceState);
80         setContentView(R.layout.activity_new_transaction);
81         Toolbar toolbar = findViewById(R.id.toolbar);
82         setSupportActionBar(toolbar);
83
84         text_date = findViewById(R.id.new_transaction_date);
85         text_date.setOnFocusChangeListener((v, hasFocus) -> {
86             if (hasFocus) pickTransactionDate(v);
87         });
88         text_descr = findViewById(R.id.new_transaction_description);
89         MLDB.hook_autocompletion_adapter(this, text_descr, MLDB.DESCRIPTION_HISTORY_TABLE,
90                 "description", false, findViewById(R.id.new_transaction_acc_1));
91         hook_text_change_listener(text_descr);
92
93         progress = findViewById(R.id.save_transaction_progress);
94
95         Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
96         table = findViewById(R.id.new_transaction_accounts_table);
97         for (int i = 0; i < table.getChildCount(); i++) {
98             TableRow row = (TableRow) table.getChildAt(i);
99             AutoCompleteTextView acc_name_view = (AutoCompleteTextView) row.getChildAt(0);
100             TextView amount_view = (TextView) row.getChildAt(1);
101             hook_swipe_listener(row);
102             MLDB.hook_autocompletion_adapter(this, acc_name_view, MLDB.ACCOUNTS_TABLE, "name", true,
103                     amount_view);
104             hook_text_change_listener(acc_name_view);
105             hook_text_change_listener(amount_view);
106 //            Log.d("swipe", "hooked to row "+i);
107         }
108     }
109
110     @Override
111     protected void onStart() {
112         super.onStart();
113         if (text_descr.getText().toString().isEmpty()) text_descr.requestFocus();
114     }
115
116     @Override
117     public void finish() {
118         super.finish();
119         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
120     }
121
122     @Override
123     public boolean onOptionsItemSelected(MenuItem item) {
124         switch (item.getItemId()) {
125             case android.R.id.home:
126                 finish();
127                 return true;
128         }
129         return super.onOptionsItemSelected(item);
130     }
131
132     public void save_transaction() {
133         if (mSave != null) mSave.setVisible(false);
134         toggle_all_editing(false);
135         progress.setVisibility(View.VISIBLE);
136
137         saver = new SaveTransactionTask(this);
138
139         String date = text_date.getText().toString();
140         if (date.isEmpty()) date = String.valueOf(new Date().getDate());
141         LedgerTransaction tr = new LedgerTransaction(date, text_descr.getText().toString());
142
143         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
144         for (int i = 0; i < table.getChildCount(); i++) {
145             TableRow row = (TableRow) table.getChildAt(i);
146             String acc = ((TextView) row.getChildAt(0)).getText().toString();
147             String amt = ((TextView) row.getChildAt(1)).getText().toString();
148             LedgerTransactionAccount item =
149                     amt.length() > 0 ? new LedgerTransactionAccount(acc, Float.parseFloat(amt))
150                                      : new LedgerTransactionAccount(acc);
151
152             tr.addAccount(item);
153         }
154         saver.execute(tr);
155     }
156
157     private void toggle_all_editing(boolean enabled) {
158         text_date.setEnabled(enabled);
159         text_descr.setEnabled(enabled);
160         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
161         for (int i = 0; i < table.getChildCount(); i++) {
162             TableRow row = (TableRow) table.getChildAt(i);
163             for (int j = 0; j < row.getChildCount(); j++) {
164                 row.getChildAt(j).setEnabled(enabled);
165             }
166         }
167     }
168
169     private void hook_swipe_listener(final TableRow row) {
170         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
171             public void onSwipeLeft() {
172 //                Log.d("swipe", "LEFT" + row.getId());
173                 if (table.getChildCount() > 2) {
174                     TableRow prev_row = (TableRow) table.getChildAt(table.indexOfChild(row) - 1);
175                     TableRow next_row = (TableRow) table.getChildAt(table.indexOfChild(row) + 1);
176                     TextView prev_amt =
177                             (prev_row != null) ? (TextView) prev_row.getChildAt(1) : text_descr;
178                     TextView next_acc =
179                             (next_row != null) ? (TextView) next_row.getChildAt(0) : null;
180
181                     if (next_acc == null) {
182                         prev_amt.setNextFocusRightId(R.id.none);
183                         prev_amt.setNextFocusForwardId(R.id.none);
184                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
185                     }
186                     else {
187                         prev_amt.setNextFocusRightId(next_acc.getId());
188                         prev_amt.setNextFocusForwardId(next_acc.getId());
189                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
190                     }
191
192                     if (row.hasFocus()) {
193                         if (next_acc != null) next_acc.requestFocus();
194                         else prev_amt.requestFocus();
195                     }
196
197                     table.removeView(row);
198                     check_transaction_submittable();
199 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
200                 }
201                 else {
202                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required,
203                             Snackbar.LENGTH_LONG).setAction("Action", null).show();
204                 }
205             }
206             //            @Override
207 //            public boolean performClick(View view, MotionEvent m) {
208 //                return true;
209 //            }
210             public boolean onTouch(View view, MotionEvent m) {
211                 return gestureDetector.onTouchEvent(m);
212             }
213         });
214     }
215
216     private void hook_text_change_listener(final TextView view) {
217         view.addTextChangedListener(new TextWatcher() {
218             @Override
219             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
220
221             }
222
223             @Override
224             public void onTextChanged(CharSequence s, int start, int before, int count) {
225
226             }
227
228             @Override
229             public void afterTextChanged(Editable s) {
230 //                Log.d("input", "text changed");
231                 check_transaction_submittable();
232             }
233         });
234
235     }
236
237     public boolean onCreateOptionsMenu(Menu menu) {
238         // Inflate the menu; this adds items to the action bar if it is present.
239         getMenuInflater().inflate(R.menu.new_transaction, menu);
240         mSave = menu.findItem(R.id.action_submit_transaction);
241         if (mSave == null) throw new AssertionError();
242
243         check_transaction_submittable();
244
245         return true;
246     }
247
248     public void pickTransactionDate(View view) {
249         DialogFragment picker = new DatePickerFragment();
250         picker.show(getSupportFragmentManager(), "datePicker");
251     }
252
253     public int dp2px(float dp) {
254         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
255                 getResources().getDisplayMetrics()));
256     }
257
258     private void do_add_account_row(boolean focus) {
259         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
260         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
261                 TableRow.LayoutParams.WRAP_CONTENT, 9f));
262         acc.setHint(R.string.new_transaction_account_hint);
263         acc.setWidth(0);
264         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT | EditorInfo.IME_FLAG_NO_ENTER_ACTION |
265                           EditorInfo.IME_FLAG_NAVIGATE_NEXT);
266         acc.setSingleLine(true);
267
268         final EditText amt = new EditText(this);
269         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
270                 TableRow.LayoutParams.MATCH_PARENT, 1f));
271         amt.setHint(R.string.new_transaction_amount_hint);
272         amt.setWidth(0);
273         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED |
274                          InputType.TYPE_NUMBER_FLAG_DECIMAL);
275         amt.setMinWidth(dp2px(40));
276         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
277         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
278
279         // forward navigation support
280         final TableRow last_row = (TableRow) table.getChildAt(table.getChildCount() - 1);
281         final TextView last_amt = (TextView) last_row.getChildAt(1);
282         last_amt.setNextFocusForwardId(acc.getId());
283         last_amt.setNextFocusRightId(acc.getId());
284         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
285         acc.setNextFocusForwardId(amt.getId());
286         acc.setNextFocusRightId(amt.getId());
287
288         final TableRow row = new TableRow(this);
289         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
290                 TableRow.LayoutParams.MATCH_PARENT));
291         row.setGravity(Gravity.BOTTOM);
292         row.addView(acc);
293         row.addView(amt);
294         table.addView(row);
295
296         if (focus) acc.requestFocus();
297
298         hook_swipe_listener(row);
299         MLDB.hook_autocompletion_adapter(this, acc, MLDB.ACCOUNTS_TABLE, "name", true, amt);
300         hook_text_change_listener(acc);
301         hook_text_change_listener(amt);
302     }
303
304     public void addTransactionAccountFromMenu(MenuItem item) {
305         do_add_account_row(true);
306     }
307
308     public void resetTransactionFromMenu(MenuItem item) {
309         reset_form();
310     }
311
312     public void saveTransactionFromMenu(MenuItem item) {
313         save_transaction();
314     }
315
316     private boolean is_zero(float f) {
317         return (f < 0.005) && (f > -0.005);
318     }
319
320     // rules:
321     // 1) at least two account names
322     // 2) each amount must have account name
323     // 3) amounts must balance to 0, or
324     // 3a) there must be exactly one empty amount
325     // 4) empty accounts with empty amounts are ignored
326     // 5) a row with an empty account name or empty amount is guaranteed to exist
327     @SuppressLint("DefaultLocale")
328     private void check_transaction_submittable() {
329         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
330         int accounts = 0;
331         int accounts_with_values = 0;
332         int amounts = 0;
333         int amounts_with_accounts = 0;
334         int empty_rows = 0;
335         TextView empty_amount = null;
336         boolean single_empty_amount = false;
337         boolean single_empty_amount_has_account = false;
338         float running_total = 0f;
339         boolean have_description =
340                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
341                         .isEmpty();
342
343         try {
344             for (int i = 0; i < table.getChildCount(); i++) {
345                 TableRow row = (TableRow) table.getChildAt(i);
346
347                 TextView acc_name_v = (TextView) row.getChildAt(0);
348                 TextView amount_v = (TextView) row.getChildAt(1);
349                 String amt = String.valueOf(amount_v.getText());
350                 String acc_name = String.valueOf(acc_name_v.getText());
351                 acc_name = acc_name.trim();
352
353                 if (!acc_name.isEmpty()) {
354                     accounts++;
355
356                     if (!amt.isEmpty()) {
357                         accounts_with_values++;
358                     }
359                 }
360                 else empty_rows++;
361
362                 if (amt.isEmpty()) {
363                     amount_v.setHint(String.format("%1.2f", 0f));
364                     if (empty_amount == null) {
365                         empty_amount = amount_v;
366                         single_empty_amount = true;
367                         single_empty_amount_has_account = !acc_name.isEmpty();
368                     }
369                     else if (!acc_name.isEmpty()) single_empty_amount = false;
370                 }
371                 else {
372                     amounts++;
373                     if (!acc_name.isEmpty()) amounts_with_accounts++;
374                     running_total += Float.valueOf(amt);
375                 }
376             }
377
378             if ((empty_rows == 0) &&
379                 ((table.getChildCount() == accounts) || (table.getChildCount() == amounts)))
380             {
381                 do_add_account_row(false);
382             }
383
384             Log.d("submittable", String.format("accounts=%d, accounts_with_values=%s, " +
385                                                "amounts_with_accounts=%d, amounts=%d, running_total=%1.2f, " +
386                                                "single_empty_with_acc=%s", accounts,
387                     accounts_with_values, amounts_with_accounts, amounts, running_total,
388                     (single_empty_amount && single_empty_amount_has_account) ? "true" : "false"));
389
390             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) &&
391                 (amounts_with_accounts == amounts) &&
392                 (single_empty_amount && single_empty_amount_has_account || is_zero(running_total)))
393             {
394                 if (mSave != null) mSave.setVisible(true);
395             }
396             else if (mSave != null) mSave.setVisible(false);
397
398             if (single_empty_amount) {
399                 empty_amount.setHint(String.format("%1.2f",
400                         (Math.abs(running_total) > 0.005) ? -running_total : 0f));
401             }
402
403         }
404         catch (NumberFormatException e) {
405             if (mSave != null) mSave.setVisible(false);
406         }
407         catch (Exception e) {
408             e.printStackTrace();
409             if (mSave != null) mSave.setVisible(false);
410         }
411     }
412
413     @Override
414     public void done(String error) {
415         progress.setVisibility(View.INVISIBLE);
416         Log.d("visuals", "hiding progress");
417
418         if (error == null) reset_form();
419         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
420                 BaseTransientBottomBar.LENGTH_LONG).show();
421
422         toggle_all_editing(true);
423         check_transaction_submittable();
424     }
425
426     private void reset_form() {
427         text_date.setText("");
428         text_descr.setText("");
429
430         text_descr.requestFocus();
431
432         while (table.getChildCount() > 2) {
433             table.removeViewAt(2);
434         }
435         for (int i = 0; i < 2; i++) {
436             TableRow tr = (TableRow) table.getChildAt(i);
437             if (tr == null) break;
438
439             ((TextView) tr.getChildAt(0)).setText("");
440             ((TextView) tr.getChildAt(1)).setText("");
441         }
442     }
443 }