]> git.ktnx.net Git - mobile-ledger.git/blobdiff - app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionModel.java
more pronounced day/month delimiters in the transaction list
[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / ui / activity / NewTransactionModel.java
diff --git a/app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionModel.java b/app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionModel.java
deleted file mode 100644 (file)
index 34d3a84..0000000
+++ /dev/null
@@ -1,782 +0,0 @@
-/*
- * 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.annotation.Nullable;
-import androidx.lifecycle.LifecycleOwner;
-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.Currency;
-import net.ktnx.mobileledger.model.Data;
-import net.ktnx.mobileledger.model.LedgerTransactionAccount;
-import net.ktnx.mobileledger.model.MobileLedgerProfile;
-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.Collections;
-import java.util.Date;
-import java.util.GregorianCalendar;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Locale;
-import java.util.Set;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-import static net.ktnx.mobileledger.utils.Logger.debug;
-
-public class NewTransactionModel extends ViewModel {
-    private static final Pattern reYMD =
-            Pattern.compile("^\\s*(\\d+)\\d*/\\s*(\\d+)\\s*/\\s*(\\d+)\\s*$");
-    private static final Pattern reMD = Pattern.compile("^\\s*(\\d+)\\s*/\\s*(\\d+)\\s*$");
-    private static final Pattern reD = Pattern.compile("\\s*(\\d+)\\s*$");
-    final MutableLiveData<Boolean> showCurrency = new MutableLiveData<>(false);
-    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);
-    private final MutableLiveData<Boolean> simulateSave = new MutableLiveData<>(false);
-    /*
-     Slots contain lists of items, all using the same currency, including the possible
-     item with no account/amount that is used to help balancing the transaction
-
-     There is one slot per currency
-     */
-    private final HashMap<String, List<Item>> slots = new HashMap<>();
-    private int checkHoldCounter = 0;
-    private boolean observingDataProfile;
-    private Observer<MobileLedgerProfile> profileObserver =
-            profile -> showCurrency.postValue(profile.getShowCommodityByDefault());
-    public void observeDataProfile(LifecycleOwner activity) {
-        if (!observingDataProfile)
-            Data.profile.observe(activity, profileObserver);
-        observingDataProfile = true;
-    }
-    void holdSubmittableChecks() {
-        checkHoldCounter++;
-    }
-    void releaseSubmittableChecks() {
-        if (checkHoldCounter == 0)
-            throw new RuntimeException("Asymmetrical call to releaseSubmittableChecks");
-        checkHoldCounter--;
-    }
-    boolean getSimulateSave() {
-        return simulateSave.getValue();
-    }
-    public void setSimulateSave(boolean simulateSave) {
-        this.simulateSave.setValue(simulateSave);
-    }
-    void toggleSimulateSave() {
-        simulateSave.setValue(!simulateSave.getValue());
-    }
-    void observeSimulateSave(@NonNull @NotNull androidx.lifecycle.LifecycleOwner owner,
-                             @NonNull androidx.lifecycle.Observer<? super Boolean> observer) {
-        this.simulateSave.observe(owner, observer);
-    }
-    int getAccountCount() {
-        return items.size();
-    }
-    public Date getDate() {
-        return header.date.getValue();
-    }
-    public String getDescription() {
-        return header.description.getValue();
-    }
-    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);
-    }
-    void observeFocusedItem(@NonNull @NotNull androidx.lifecycle.LifecycleOwner owner,
-                            @NonNull androidx.lifecycle.Observer<? super Integer> observer) {
-        this.focusedItem.observe(owner, observer);
-    }
-    void stopObservingFocusedItem(@NonNull androidx.lifecycle.Observer<? super Integer> observer) {
-        this.focusedItem.removeObserver(observer);
-    }
-    void observeAccountCount(@NonNull @NotNull androidx.lifecycle.LifecycleOwner owner,
-                             @NonNull androidx.lifecycle.Observer<? super Integer> observer) {
-        this.accountCount.observe(owner, observer);
-    }
-    void stopObservingAccountCount(@NonNull androidx.lifecycle.Observer<? super Integer> observer) {
-        this.accountCount.removeObserver(observer);
-    }
-    int getFocusedItem() { return focusedItem.getValue(); }
-    void setFocusedItem(int position) {
-        focusedItem.setValue(position);
-    }
-    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();
-    }
-    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 row with amount has account name
-     3) for each commodity:
-     3a) amounts must balance to 0, or
-     3b) there must be exactly one empty amount (with account)
-     4) empty accounts with empty amounts are ignored
-     Side effects:
-     5) a row with an empty account name or empty amount is guaranteed to exist for each commodity
-     6) at least two rows need to be present in the ledger
-
-    */
-    @SuppressLint("DefaultLocale")
-    void checkTransactionSubmittable(NewTransactionItemsAdapter adapter) {
-        if (checkHoldCounter > 0)
-            return;
-
-        int accounts = 0;
-        final BalanceForCurrency balance = new BalanceForCurrency();
-        final String descriptionText = getDescription();
-        boolean submittable = true;
-        final ItemsForCurrency itemsForCurrency = new ItemsForCurrency();
-        final ItemsForCurrency itemsWithEmptyAmountForCurrency = new ItemsForCurrency();
-        final ItemsForCurrency itemsWithAccountAndEmptyAmountForCurrency = new ItemsForCurrency();
-        final ItemsForCurrency itemsWithEmptyAccountForCurrency = new ItemsForCurrency();
-        final ItemsForCurrency itemsWithAmountForCurrency = new ItemsForCurrency();
-        final ItemsForCurrency itemsWithAccountForCurrency = new ItemsForCurrency();
-        final ItemsForCurrency emptyRowsForCurrency = new ItemsForCurrency();
-        final List<Item> emptyRows = 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();
-                String currName = acc.getCurrency();
-
-                itemsForCurrency.add(currName, item);
-
-                if (acc_name.isEmpty()) {
-                    itemsWithEmptyAccountForCurrency.add(currName, item);
-
-                    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 {
-                        emptyRowsForCurrency.add(currName, item);
-                    }
-                }
-                else {
-                    accounts++;
-                    itemsWithAccountForCurrency.add(currName, item);
-                }
-
-                if (acc.isAmountSet()) {
-                    itemsWithAmountForCurrency.add(currName, item);
-                    balance.add(currName, acc.getAmount());
-                }
-                else {
-                    itemsWithEmptyAmountForCurrency.add(currName, item);
-
-                    if (!acc_name.isEmpty())
-                        itemsWithAccountAndEmptyAmountForCurrency.add(currName, item);
-                }
-            }
-
-            // 1) has at least two account names
-            if (accounts < 2) {
-                if (accounts == 0)
-                    Logger.debug("submittable",
-                            "Transaction not submittable: no account " + "names");
-                else if (accounts == 1)
-                    Logger.debug("submittable",
-                            "Transaction not submittable: only one account name");
-                else
-                    Logger.debug("submittable",
-                            String.format("Transaction not submittable: only %d account names",
-                                    accounts));
-                submittable = false;
-            }
-
-            // 3) for each commodity:
-            // 3a) amount must balance to 0, or
-            // 3b) there must be exactly one empty amount (with account)
-            for (String balCurrency : itemsForCurrency.currencies()) {
-                float currencyBalance = balance.get(balCurrency);
-                if (Misc.isZero(currencyBalance)) {
-                    // remove hints from all amount inputs in that currency
-                    for (Item item : items) {
-                        if (Currency.equal(item.getCurrency(), balCurrency))
-                            item.setAmountHint(null);
-                    }
-                }
-                else {
-                    List<Item> list =
-                            itemsWithAccountAndEmptyAmountForCurrency.getList(balCurrency);
-                    int balanceReceiversCount = list.size();
-                    if (balanceReceiversCount != 1) {
-                        if (BuildConfig.DEBUG) {
-                            if (balanceReceiversCount == 0)
-                                Logger.debug("submittable", String.format(
-                                        "Transaction not submittable [%s]: non-zero balance " +
-                                        "with no empty amounts with accounts", balCurrency));
-                            else
-                                Logger.debug("submittable", String.format(
-                                        "Transaction not submittable [%s]: non-zero balance " +
-                                        "with multiple empty amounts with accounts", balCurrency));
-                        }
-                        submittable = false;
-                    }
-
-                    List<Item> emptyAmountList =
-                            itemsWithEmptyAmountForCurrency.getList(balCurrency);
-
-                    // suggest off-balance amount to a row and remove hints on other rows
-                    Item receiver = null;
-                    if (!list.isEmpty())
-                        receiver = list.get(0);
-                    else if (!emptyAmountList.isEmpty())
-                        receiver = emptyAmountList.get(0);
-
-                    for (Item item : items) {
-                        if (!Currency.equal(item.getCurrency(), balCurrency))
-                            continue;
-
-                        if (item.equals(receiver)) {
-                            if (BuildConfig.DEBUG)
-                                Logger.debug("submittable",
-                                        String.format("Setting amount hint to %1.2f [%s]",
-                                                -currencyBalance, balCurrency));
-                            item.setAmountHint(String.format("%1.2f", -currencyBalance));
-                        }
-                        else {
-                            if (BuildConfig.DEBUG)
-                                Logger.debug("submittable",
-                                        String.format("Resetting hint of '%s' [%s]",
-                                                (item.getAccount() == null) ? "" : item.getAccount()
-                                                                                       .getAccountName(),
-                                                balCurrency));
-                            item.setAmountHint(null);
-                        }
-                    }
-                }
-            }
-
-            // 5) a row with an empty account name or empty amount is guaranteed to exist for
-            // each commodity
-            for (String balCurrency : balance.currencies()) {
-                int currEmptyRows = itemsWithEmptyAccountForCurrency.size(balCurrency);
-                int currRows = itemsForCurrency.size(balCurrency);
-                int currAccounts = itemsWithAccountForCurrency.size(balCurrency);
-                int currAmounts = itemsWithAmountForCurrency.size(balCurrency);
-                if ((currEmptyRows == 0) &&
-                    ((currRows == currAccounts) || (currRows == currAmounts)))
-                {
-                    // perhaps there already is an unused empty row for another currency that
-                    // is not used?
-//                        boolean foundIt = false;
-//                        for (Item item : emptyRows) {
-//                            Currency itemCurrency = item.getCurrency();
-//                            String itemCurrencyName =
-//                                    (itemCurrency == null) ? "" : itemCurrency.getName();
-//                            if (Misc.isZero(balance.get(itemCurrencyName))) {
-//                                item.setCurrency(Currency.loadByName(balCurrency));
-//                                item.setAmountHint(
-//                                        String.format("%1.2f", -balance.get(balCurrency)));
-//                                foundIt = true;
-//                                break;
-//                            }
-//                        }
-//
-//                        if (!foundIt)
-                    adapter.addRow(balCurrency);
-                }
-            }
-
-            // drop extra empty rows, not needed
-            for (String currName : emptyRowsForCurrency.currencies()) {
-                List<Item> emptyItems = emptyRowsForCurrency.getList(currName);
-                while ((this.items.size() > 2) && (emptyItems.size() > 1)) {
-                    Item item = emptyItems.get(1);
-                    emptyItems.remove(1);
-                    removeRow(item, adapter);
-                }
-
-                // unused currency, remove last item (which is also an empty one)
-                if ((items.size() > 2) && (emptyItems.size() == 1)) {
-                    List<Item> currItems = itemsForCurrency.getList(currName);
-
-                    if (currItems.size() == 1) {
-                        Item item = emptyItems.get(0);
-                        removeRow(item, adapter);
-                    }
-                }
-            }
-
-            // 6) at least two rows need to be present in the ledger
-            while (this.items.size() < 2)
-                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) %s] %s ; %s", i,
-                            acc.isAmountSet() ? acc.getAmount() : 0,
-                            item.isAmountHintSet() ? item.getAmountHint() : "ø", acc.getCurrency(),
-                            acc.getAccountName(), acc.getComment()));
-                }
-            }
-        }
-        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);
-        }
-    }
-    private void removeRow(Item item, NewTransactionItemsAdapter adapter) {
-        int pos = items.indexOf(item);
-        items.remove(pos);
-        if (adapter != null) {
-            adapter.notifyItemRemoved(pos + 1);
-            sendCountNotifications();
-        }
-    }
-    void removeItem(int pos) {
-        items.remove(pos);
-        accountCount.setValue(getAccountCount());
-    }
-    void sendCountNotifications() {
-        accountCount.setValue(getAccountCount());
-    }
-    public void sendFocusedNotification() {
-        focusedItem.setValue(focusedItem.getValue());
-    }
-    void updateFocusedItem(int position) {
-        focusedItem.setValue(position);
-    }
-    void noteFocusChanged(int position, FocusedElement element) {
-        getItem(position).setFocusedElement(element);
-    }
-    void swapItems(int one, int two) {
-        Collections.swap(items, one - 1, two - 1);
-    }
-    void toggleComment(int position) {
-        final MutableLiveData<Boolean> commentVisible = getItem(position).commentVisible;
-        commentVisible.postValue(!commentVisible.getValue());
-    }
-    void moveItemLast(int index) {
-        /*   0
-             1   <-- index
-             2
-             3   <-- desired position
-         */
-        int itemCount = items.size();
-
-        if (index < itemCount - 1) {
-            Item acc = items.remove(index);
-            items.add(itemCount - 1, acc);
-        }
-    }
-    void toggleCurrencyVisible() {
-        showCurrency.setValue(!showCurrency.getValue());
-    }
-    public void setItemCurrency(Item item, Currency newCurrency,
-                                NewTransactionItemsAdapter adapter) {
-        Currency oldCurrency = item.getCurrency();
-        if (!Currency.equal(newCurrency, oldCurrency)) {
-            holdSubmittableChecks();
-            try {
-                item.setCurrency(newCurrency);
-//                for (Item i : items) {
-//                    if (Currency.equal(i.getCurrency(), oldCurrency))
-//                        i.setCurrency(newCurrency);
-//                }
-            }
-            finally {
-                releaseSubmittableChecks();
-            }
-
-            checkTransactionSubmittable(adapter);
-        }
-    }
-    enum ItemType {generalData, transactionRow, bottomFiller}
-
-    enum FocusedElement {Account, Comment, Amount}
-
-    private class ItemsForCurrency {
-        private HashMap<String, List<Item>> hashMap = new HashMap<>();
-        @NonNull
-        List<Item> getList(@Nullable String currencyName) {
-            List<Item> list = hashMap.get(currencyName);
-            if (list == null) {
-                list = new ArrayList<>();
-                hashMap.put(currencyName, list);
-            }
-            return list;
-        }
-        void add(@Nullable String currencyName, @NonNull Item item) {
-            getList(currencyName).add(item);
-        }
-        int size(@Nullable String currencyName) {
-            return this.getList(currencyName)
-                       .size();
-        }
-        Set<String> currencies() {
-            return hashMap.keySet();
-        }
-    }
-
-    //==========================================================================================
-
-    private class BalanceForCurrency {
-        private HashMap<String, Float> hashMap = new HashMap<>();
-        float get(String currencyName) {
-            Float f = hashMap.get(currencyName);
-            if (f == null) {
-                f = 0f;
-                hashMap.put(currencyName, f);
-            }
-            return f;
-        }
-        void add(String currencyName, float amount) {
-            hashMap.put(currencyName, get(currencyName) + amount);
-        }
-        Set<String> currencies() {
-            return hashMap.keySet();
-        }
-        boolean containsCurrency(String currencyName) {
-            return hashMap.containsKey(currencyName);
-        }
-    }
-
-    class Item {
-        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 FocusedElement focusedElement = FocusedElement.Account;
-        private MutableLiveData<String> comment = new MutableLiveData<>(null);
-        private MutableLiveData<Boolean> commentVisible = new MutableLiveData<>(false);
-        private MutableLiveData<Currency> currency = new MutableLiveData<>(null);
-        private boolean amountHintIsSet = false;
-        Item(NewTransactionModel model) {
-            this.model = model;
-            type = ItemType.bottomFiller;
-            editable.setValue(false);
-        }
-        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);
-        }
-        Item(NewTransactionModel model, LedgerTransactionAccount account) {
-            this.model = model;
-            this.type = ItemType.transactionRow;
-            this.account = account;
-            String currName = account.getCurrency();
-            Currency curr = null;
-            if ((currName != null) && !currName.isEmpty())
-                curr = Currency.loadByName(currName);
-            this.currency.setValue(curr);
-            this.editable.setValue(true);
-        }
-        FocusedElement getFocusedElement() {
-            return focusedElement;
-        }
-        void setFocusedElement(FocusedElement focusedElement) {
-            this.focusedElement = focusedElement;
-        }
-        public NewTransactionModel getModel() {
-            return model;
-        }
-        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));
-            }
-        }
-        String getAmountHint() {
-            ensureType(ItemType.transactionRow);
-            return amountHint.getValue();
-        }
-        void setAmountHint(String amountHint) {
-            ensureType(ItemType.transactionRow);
-
-            // avoid unnecessary triggers
-            if (amountHint == null) {
-                if (this.amountHint.getValue() == null)
-                    return;
-                amountHintIsSet = false;
-            }
-            else {
-                if (amountHint.equals(this.amountHint.getValue()))
-                    return;
-                amountHintIsSet = true;
-            }
-
-            this.amountHint.setValue(amountHint);
-        }
-        void observeAmountHint(@NonNull @NotNull androidx.lifecycle.LifecycleOwner owner,
-                               @NonNull androidx.lifecycle.Observer<? super String> observer) {
-            this.amountHint.observe(owner, observer);
-        }
-        void stopObservingAmountHint(
-                @NonNull androidx.lifecycle.Observer<? super String> observer) {
-            this.amountHint.removeObserver(observer);
-        }
-        ItemType getType() {
-            return type;
-        }
-        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());
-        }
-        void observeDate(@NonNull @NotNull androidx.lifecycle.LifecycleOwner owner,
-                         @NonNull androidx.lifecycle.Observer<? super Date> observer) {
-            this.date.observe(owner, observer);
-        }
-        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);
-        }
-        void observeDescription(@NonNull @NotNull androidx.lifecycle.LifecycleOwner owner,
-                                @NonNull androidx.lifecycle.Observer<? super String> observer) {
-            this.description.observe(owner, observer);
-        }
-        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
-         */
-        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);
-        }
-        void observeEditableFlag(NewTransactionActivity activity, Observer<Boolean> observer) {
-            editable.observe(activity, observer);
-        }
-        void stopObservingEditableFlag(Observer<Boolean> observer) {
-            editable.removeObserver(observer);
-        }
-        void observeCommentVisible(NewTransactionActivity activity, Observer<Boolean> observer) {
-            commentVisible.observe(activity, observer);
-        }
-        void stopObservingCommentVisible(Observer<Boolean> observer) {
-            commentVisible.removeObserver(observer);
-        }
-        void observeComment(NewTransactionActivity activity, Observer<String> observer) {
-            comment.observe(activity, observer);
-        }
-        void stopObservingComment(Observer<String> observer) {
-            comment.removeObserver(observer);
-        }
-        public void setComment(String comment) {
-            getAccount().setComment(comment);
-            this.comment.postValue(comment);
-        }
-        public Currency getCurrency() {
-            return this.currency.getValue();
-        }
-        public void setCurrency(Currency currency) {
-            Currency present = this.currency.getValue();
-            if ((currency == null) && (present != null) ||
-                (currency != null) && !currency.equals(present))
-            {
-                getAccount().setCurrency((currency != null && !currency.getName()
-                                                                       .isEmpty())
-                                         ? currency.getName() : null);
-                this.currency.setValue(currency);
-            }
-        }
-        void observeCurrency(NewTransactionActivity activity, Observer<Currency> observer) {
-            currency.observe(activity, observer);
-        }
-        void stopObservingCurrency(Observer<Currency> observer) {
-            currency.removeObserver(observer);
-        }
-        boolean isOfType(ItemType type) {
-            return this.type == type;
-        }
-        boolean isAmountHintSet() {
-            return amountHintIsSet;
-        }
-    }
-}