+++ /dev/null
-/*
- * Copyright © 2019 Damyan Ivanov.
- * This file is part of MoLe.
- * MoLe is free software: you can distribute it and/or modify it
- * under the term of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your opinion), any later version.
- *
- * MoLe 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 terms for details.
- *
- * You should have received a copy of the GNU General Public License
- * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
- */
-
-package net.ktnx.mobileledger.ui.activity;
-
-import android.annotation.SuppressLint;
-
-import androidx.annotation.NonNull;
-import androidx.lifecycle.LiveData;
-import androidx.lifecycle.MutableLiveData;
-import androidx.lifecycle.Observer;
-import androidx.lifecycle.ViewModel;
-
-import net.ktnx.mobileledger.BuildConfig;
-import net.ktnx.mobileledger.model.LedgerTransactionAccount;
-import net.ktnx.mobileledger.utils.Logger;
-import net.ktnx.mobileledger.utils.Misc;
-
-import org.jetbrains.annotations.NotNull;
-
-import java.util.ArrayList;
-import java.util.Calendar;
-import java.util.Date;
-import java.util.GregorianCalendar;
-import java.util.List;
-import java.util.Locale;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-import static net.ktnx.mobileledger.utils.Logger.debug;
-
-public class NewTransactionModel extends ViewModel {
- static final Pattern reYMD = Pattern.compile("^\\s*(\\d+)\\d*/\\s*(\\d+)\\s*/\\s*(\\d+)\\s*$");
- static final Pattern reMD = Pattern.compile("^\\s*(\\d+)\\s*/\\s*(\\d+)\\s*$");
- static final Pattern reD = Pattern.compile("\\s*(\\d+)\\s*$");
- private final Item header = new Item(this, null, "");
- private final Item trailer = new Item(this);
- private final ArrayList<Item> items = new ArrayList<>();
- private final MutableLiveData<Boolean> isSubmittable = new MutableLiveData<>(false);
- private final MutableLiveData<Integer> focusedItem = new MutableLiveData<>(0);
- private final MutableLiveData<Integer> accountCount = new MutableLiveData<>(0);
- public int getAccountCount() {
- return items.size();
- }
- public Date getDate() {
- return header.date.getValue();
- }
- public String getDescription() {
- return header.description.getValue();
- }
- public LiveData<Boolean> isSubmittable() {
- return this.isSubmittable;
- }
- void reset() {
- header.date.setValue(null);
- header.description.setValue(null);
- items.clear();
- items.add(new Item(this, new LedgerTransactionAccount("")));
- items.add(new Item(this, new LedgerTransactionAccount("")));
- focusedItem.setValue(0);
- }
- public void observeFocusedItem(@NonNull @NotNull androidx.lifecycle.LifecycleOwner owner,
- @NonNull androidx.lifecycle.Observer<? super Integer> observer) {
- this.focusedItem.observe(owner, observer);
- }
- public void stopObservingFocusedItem(
- @NonNull androidx.lifecycle.Observer<? super Integer> observer) {
- this.focusedItem.removeObserver(observer);
- }
- public void observeAccountCount(@NonNull @NotNull androidx.lifecycle.LifecycleOwner owner,
- @NonNull
- androidx.lifecycle.Observer<? super Integer> observer) {
- this.accountCount.observe(owner, observer);
- }
- public void stopObservingAccountCount(
- @NonNull androidx.lifecycle.Observer<? super Integer> observer) {
- this.accountCount.removeObserver(observer);
- }
- public int getFocusedItem() { return focusedItem.getValue(); }
- public void setFocusedItem(int position) {
- focusedItem.setValue(position);
- }
- public int addAccount(LedgerTransactionAccount acc) {
- items.add(new Item(this, acc));
- accountCount.setValue(getAccountCount());
- return items.size();
- }
- boolean accountsInInitialState() {
- for (Item item : items) {
- LedgerTransactionAccount acc = item.getAccount();
- if (acc.isAmountSet())
- return false;
- if (!acc.getAccountName()
- .trim()
- .isEmpty())
- return false;
- }
-
- return true;
- }
- LedgerTransactionAccount getAccount(int index) {
- return items.get(index)
- .getAccount();
- }
- public Item getItem(int index) {
- if (index == 0) {
- return header;
- }
-
- if (index <= items.size())
- return items.get(index - 1);
-
- return trailer;
- }
- /*
- A transaction is submittable if:
- 0) has description
- 1) has at least two account names
- 2) each amount has account name
- 3) amounts must balance to 0, or
- 3a) there must be exactly one empty amount (with account)
- 4) empty accounts with empty amounts are ignored
- 5) a row with an empty account name or empty amount is guaranteed to exist
- */
- @SuppressLint("DefaultLocale")
- public void checkTransactionSubmittable(NewTransactionItemsAdapter adapter) {
- int accounts = 0;
- int amounts = 0;
- int empty_rows = 0;
- float balance = 0f;
- final String descriptionText = getDescription();
- boolean submittable = true;
- List<Item> itemsWithEmptyAmount = new ArrayList<>();
- List<Item> itemsWithAccountAndEmptyAmount = new ArrayList<>();
-
- try {
- if ((descriptionText == null) || descriptionText.trim()
- .isEmpty())
- {
- Logger.debug("submittable", "Transaction not submittable: missing description");
- submittable = false;
- }
-
- for (int i = 0; i < this.items.size(); i++) {
- Item item = this.items.get(i);
-
- LedgerTransactionAccount acc = item.getAccount();
- String acc_name = acc.getAccountName()
- .trim();
- if (acc_name.isEmpty()) {
- empty_rows++;
-
- if (acc.isAmountSet()) {
- // 2) each amount has account name
- Logger.debug("submittable", String.format(
- "Transaction not submittable: row %d has no account name, but has" +
- " amount %1.2f", i + 1, acc.getAmount()));
- submittable = false;
- }
- }
- else {
- accounts++;
- }
-
- if (acc.isAmountSet()) {
- amounts++;
- balance += acc.getAmount();
- }
- else {
- itemsWithEmptyAmount.add(item);
-
- if (!acc_name.isEmpty()) {
- itemsWithAccountAndEmptyAmount.add(item);
- }
- }
- }
-
- // 1) has at least two account names
- if (accounts < 2) {
- Logger.debug("submittable",
- String.format("Transaction not submittable: only %d account names",
- accounts));
- submittable = false;
- }
-
- // 3) amount must balance to 0, or
- // 3a) there must be exactly one empty amount (with account)
- if (Misc.isZero(balance)) {
- for (Item item : items) {
- item.setAmountHint(null);
- }
- }
- else {
- int balanceReceiversCount = itemsWithAccountAndEmptyAmount.size();
- if (balanceReceiversCount != 1) {
- Logger.debug("submittable", (balanceReceiversCount == 0) ?
- "Transaction not submittable: non-zero balance " +
- "with no empty amounts with accounts" :
- "Transaction not submittable: non-zero balance " +
- "with multiple empty amounts with accounts");
- submittable = false;
- }
-
- // suggest off-balance amount to a row and remove hints on other rows
- Item receiver = null;
- if (!itemsWithAccountAndEmptyAmount.isEmpty())
- receiver = itemsWithAccountAndEmptyAmount.get(0);
- else if (!itemsWithEmptyAmount.isEmpty())
- receiver = itemsWithEmptyAmount.get(0);
-
- for (Item item : items) {
- if (item.equals(receiver)) {
- Logger.debug("submittable",
- String.format("Setting amount hint to %1.2f", -balance));
- item.setAmountHint(String.format("%1.2f", -balance));
- }
- else
- item.setAmountHint(null);
- }
- }
-
- // 5) a row with an empty account name or empty amount is guaranteed to exist
- if ((empty_rows == 0) &&
- ((this.items.size() == accounts) || (this.items.size() == amounts)))
- {
- adapter.addRow();
- }
-
-
- debug("submittable", submittable ? "YES" : "NO");
- isSubmittable.setValue(submittable);
-
- if (BuildConfig.DEBUG) {
- debug("submittable", "== Dump of all items");
- for (int i = 0; i < items.size(); i++) {
- Item item = items.get(i);
- LedgerTransactionAccount acc = item.getAccount();
- debug("submittable", String.format("Item %2d: [%4.2f] %s", i,
- acc.isAmountSet() ? acc.getAmount() : 0, acc.getAccountName()));
- }
- }
- }
- catch (NumberFormatException e) {
- debug("submittable", "NO (because of NumberFormatException)");
- isSubmittable.setValue(false);
- }
- catch (Exception e) {
- e.printStackTrace();
- debug("submittable", "NO (because of an Exception)");
- isSubmittable.setValue(false);
- }
- }
- public void removeItem(int pos) {
- items.remove(pos);
- accountCount.setValue(getAccountCount());
- }
- public void sendCountNotifications() {
- accountCount.setValue(getAccountCount());
- }
- public void sendFocusedNotification() {
- focusedItem.setValue(focusedItem.getValue());
- }
- public void updateFocusedItem(int position) {
- focusedItem.setValue(position);
- }
- public void noteFocusIsOnAccount(int position) {
- getItem(position).setFocusIsOnAmount(false);
- }
- public void noteFocusIsOnAmount(int position) {
- getItem(position).setFocusIsOnAmount(true);
- }
- enum ItemType {generalData, transactionRow, bottomFiller}
-
- //==========================================================================================
-
- class Item extends Object {
- private ItemType type;
- private MutableLiveData<Date> date = new MutableLiveData<>();
- private MutableLiveData<String> description = new MutableLiveData<>();
- private LedgerTransactionAccount account;
- private MutableLiveData<String> amountHint = new MutableLiveData<>(null);
- private NewTransactionModel model;
- private MutableLiveData<Boolean> editable = new MutableLiveData<>(true);
- private boolean focusIsOnAmount = false;
- public Item(NewTransactionModel model) {
- this.model = model;
- type = ItemType.bottomFiller;
- editable.setValue(false);
- }
- public Item(NewTransactionModel model, Date date, String description) {
- this.model = model;
- this.type = ItemType.generalData;
- this.date.setValue(date);
- this.description.setValue(description);
- this.editable.setValue(true);
- }
- public Item(NewTransactionModel model, LedgerTransactionAccount account) {
- this.model = model;
- this.type = ItemType.transactionRow;
- this.account = account;
- this.editable.setValue(true);
- }
- public boolean focusIsOnAmount() {
- return focusIsOnAmount;
- }
- public NewTransactionModel getModel() {
- return model;
- }
- public void setEditable(boolean editable) {
- ensureType(ItemType.generalData, ItemType.transactionRow);
- this.editable.setValue(editable);
- }
- private void ensureType(ItemType type1, ItemType type2) {
- if ((type != type1) && (type != type2)) {
- throw new RuntimeException(
- String.format("Actual type (%s) differs from wanted (%s or %s)", type,
- type1, type2));
- }
- }
- public String getAmountHint() {
- ensureType(ItemType.transactionRow);
- return amountHint.getValue();
- }
- public void setAmountHint(String amountHint) {
- ensureType(ItemType.transactionRow);
-
- // avoid unnecessary triggers
- if (amountHint == null) {
- if (this.amountHint.getValue() == null)
- return;
- }
- else {
- if (amountHint.equals(this.amountHint.getValue()))
- return;
- }
-
- this.amountHint.setValue(amountHint);
- }
- public void observeAmountHint(@NonNull @NotNull androidx.lifecycle.LifecycleOwner owner,
- @NonNull
- androidx.lifecycle.Observer<? super String> observer) {
- this.amountHint.observe(owner, observer);
- }
- public void stopObservingAmountHint(
- @NonNull androidx.lifecycle.Observer<? super String> observer) {
- this.amountHint.removeObserver(observer);
- }
- public ItemType getType() {
- return type;
- }
- public void ensureType(ItemType wantedType) {
- if (type != wantedType) {
- throw new RuntimeException(
- String.format("Actual type (%s) differs from wanted (%s)", type,
- wantedType));
- }
- }
- public Date getDate() {
- ensureType(ItemType.generalData);
- return date.getValue();
- }
- public void setDate(Date date) {
- ensureType(ItemType.generalData);
- this.date.setValue(date);
- }
- public void setDate(String text) {
- if ((text == null) || text.trim()
- .isEmpty())
- {
- setDate((Date) null);
- return;
- }
-
- int year, month, day;
- final Calendar c = GregorianCalendar.getInstance();
- Matcher m = reYMD.matcher(text);
- if (m.matches()) {
- year = Integer.parseInt(m.group(1));
- month = Integer.parseInt(m.group(2)) - 1; // month is 0-based
- day = Integer.parseInt(m.group(3));
- }
- else {
- year = c.get(Calendar.YEAR);
- m = reMD.matcher(text);
- if (m.matches()) {
- month = Integer.parseInt(m.group(1)) - 1;
- day = Integer.parseInt(m.group(2));
- }
- else {
- month = c.get(Calendar.MONTH);
- m = reD.matcher(text);
- if (m.matches()) {
- day = Integer.parseInt(m.group(1));
- }
- else {
- day = c.get(Calendar.DAY_OF_MONTH);
- }
- }
- }
-
- c.set(year, month, day);
-
- this.setDate(c.getTime());
- }
- public void observeDate(@NonNull @NotNull androidx.lifecycle.LifecycleOwner owner,
- @NonNull androidx.lifecycle.Observer<? super Date> observer) {
- this.date.observe(owner, observer);
- }
- public void stopObservingDate(@NonNull androidx.lifecycle.Observer<? super Date> observer) {
- this.date.removeObserver(observer);
- }
- public String getDescription() {
- ensureType(ItemType.generalData);
- return description.getValue();
- }
- public void setDescription(String description) {
- ensureType(ItemType.generalData);
- this.description.setValue(description);
- }
- public void observeDescription(@NonNull @NotNull androidx.lifecycle.LifecycleOwner owner,
- @NonNull
- androidx.lifecycle.Observer<? super String> observer) {
- this.description.observe(owner, observer);
- }
- public void stopObservingDescription(
- @NonNull androidx.lifecycle.Observer<? super String> observer) {
- this.description.removeObserver(observer);
- }
- public LedgerTransactionAccount getAccount() {
- ensureType(ItemType.transactionRow);
- return account;
- }
- public void setAccountName(String name) {
- account.setAccountName(name);
- }
- /**
- * getFormattedDate()
- *
- * @return nicely formatted, shortest available date representation
- */
- public String getFormattedDate() {
- if (date == null)
- return null;
- Date time = date.getValue();
- if (time == null)
- return null;
-
- Calendar c = GregorianCalendar.getInstance();
- c.setTime(time);
- Calendar today = GregorianCalendar.getInstance();
-
- final int myYear = c.get(Calendar.YEAR);
- final int myMonth = c.get(Calendar.MONTH);
- final int myDay = c.get(Calendar.DAY_OF_MONTH);
-
- if (today.get(Calendar.YEAR) != myYear) {
- return String.format(Locale.US, "%d/%02d/%02d", myYear, myMonth + 1, myDay);
- }
-
- if (today.get(Calendar.MONTH) != myMonth) {
- return String.format(Locale.US, "%d/%02d", myMonth + 1, myDay);
- }
-
- return String.valueOf(myDay);
- }
- public void observeEditableFlag(NewTransactionActivity activity,
- Observer<Boolean> observer) {
- editable.observe(activity, observer);
- }
- public void stopObservingEditableFlag(Observer<Boolean> observer) {
- editable.removeObserver(observer);
- }
- public void setFocusIsOnAmount(boolean flag) {
- focusIsOnAmount = flag;
- }
- }
-}
projects / mobile-ledger.git / blobdiff