app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionFragment.java

   1 /*
   2  * Copyright © 2020 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.
   8  *
   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.
  13  *
  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/>.
  16  */
  17
  18 package net.ktnx.mobileledger.ui.activity;
  19
  20 import android.content.Context;
  21 import android.content.res.Resources;
  22 import android.os.Bundle;
  23 import android.renderscript.RSInvalidStateException;
  24 import android.view.LayoutInflater;
  25 import android.view.Menu;
  26 import android.view.MenuInflater;
  27 import android.view.MenuItem;
  28 import android.view.View;
  29 import android.view.ViewGroup;
  30 import android.widget.ProgressBar;
  31
  32 import androidx.annotation.NonNull;
  33 import androidx.annotation.Nullable;
  34 import androidx.appcompat.app.AlertDialog;
  35 import androidx.fragment.app.Fragment;
  36 import androidx.fragment.app.FragmentActivity;
  37 import androidx.lifecycle.ViewModelProvider;
  38 import androidx.recyclerview.widget.LinearLayoutManager;
  39 import androidx.recyclerview.widget.RecyclerView;
  40
  41 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  42 import com.google.android.material.snackbar.Snackbar;
  43
  44 import net.ktnx.mobileledger.R;
  45 import net.ktnx.mobileledger.json.API;
  46 import net.ktnx.mobileledger.model.Data;
  47 import net.ktnx.mobileledger.model.LedgerTransaction;
  48 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  49 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  50 import net.ktnx.mobileledger.utils.Logger;
  51 import net.ktnx.mobileledger.utils.Misc;
  52 import net.ktnx.mobileledger.utils.SimpleDate;
  53
  54 import org.jetbrains.annotations.NotNull;
  55
  56 /**
  57  * A simple {@link Fragment} subclass.
  58  * Activities that contain this fragment must implement the
  59  * {@link OnNewTransactionFragmentInteractionListener} interface
  60  * to handle interaction events.
  61  */
  62
  63 // TODO: offer to undo account remove-on-swipe
  64 // TODO: transaction-level comment
  65
  66 public class NewTransactionFragment extends Fragment {
  67     private NewTransactionItemsAdapter listAdapter;
  68     private NewTransactionModel viewModel;
  69     private FloatingActionButton fab;
  70     private OnNewTransactionFragmentInteractionListener mListener;
  71     private MobileLedgerProfile mProfile;
  72     public NewTransactionFragment() {
  73         // Required empty public constructor
  74         setHasOptionsMenu(true);
  75     }
  76     @Override
  77     public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
  78         super.onCreateOptionsMenu(menu, inflater);
  79         final FragmentActivity activity = getActivity();
  80
  81         inflater.inflate(R.menu.new_transaction_fragment, menu);
  82         menu.findItem(R.id.action_reset_new_transaction_activity)
  83             .setOnMenuItemClickListener(item -> {
  84                 listAdapter.reset();
  85                 return true;
  86             });
  87
  88         final MenuItem toggleCurrencyItem = menu.findItem(R.id.toggle_currency);
  89         toggleCurrencyItem.setOnMenuItemClickListener(item -> {
  90             viewModel.toggleCurrencyVisible();
  91             return true;
  92         });
  93         if (activity != null)
  94             viewModel.showCurrency.observe(activity, toggleCurrencyItem::setChecked);
  95
  96         final MenuItem toggleCommentsItem = menu.findItem(R.id.toggle_comments);
  97         toggleCommentsItem.setOnMenuItemClickListener(item -> {
  98             viewModel.toggleShowComments();
  99             return true;
 100         });
 101         if (activity != null)
 102             viewModel.showComments.observe(activity, toggleCommentsItem::setChecked);
 103     }
 104     @Override
 105     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 106                              Bundle savedInstanceState) {
 107         // Inflate the layout for this fragment
 108         return inflater.inflate(R.layout.fragment_new_transaction, container, false);
 109     }
 110
 111     @Override
 112     public void onViewCreated(@NotNull View view, @Nullable Bundle savedInstanceState) {
 113         super.onViewCreated(view, savedInstanceState);
 114         FragmentActivity activity = getActivity();
 115         if (activity == null)
 116             throw new RSInvalidStateException(
 117                     "getActivity() returned null within onActivityCreated()");
 118
 119         viewModel = new ViewModelProvider(activity).get(NewTransactionModel.class);
 120         viewModel.observeDataProfile(this);
 121         mProfile = Data.getProfile();
 122         listAdapter = new NewTransactionItemsAdapter(viewModel, mProfile);
 123
 124         RecyclerView list = activity.findViewById(R.id.new_transaction_accounts);
 125         list.setAdapter(listAdapter);
 126         list.setLayoutManager(new LinearLayoutManager(activity));
 127
 128         Data.observeProfile(getViewLifecycleOwner(), profile -> {
 129             mProfile = profile;
 130             listAdapter.setProfile(profile);
 131         });
 132         listAdapter.notifyDataSetChanged();
 133         viewModel.isSubmittable()
 134                  .observe(getViewLifecycleOwner(), isSubmittable -> {
 135                      if (isSubmittable) {
 136                          if (fab != null) {
 137                              fab.show();
 138                          }
 139                      }
 140                      else {
 141                          if (fab != null) {
 142                              fab.hide();
 143                          }
 144                      }
 145                  });
 146 //        viewModel.checkTransactionSubmittable(listAdapter);
 147
 148         fab = activity.findViewById(R.id.fab);
 149         fab.setOnClickListener(v -> onFabPressed());
 150
 151         boolean keep = false;
 152
 153         Bundle args = getArguments();
 154         if (args != null) {
 155             String error = args.getString("error");
 156             if (error != null) {
 157                 Logger.debug("new-trans-f", String.format("Got error: %s", error));
 158
 159                 Context context = getContext();
 160                 if (context != null) {
 161                     AlertDialog.Builder builder = new AlertDialog.Builder(context);
 162                     final Resources resources = context.getResources();
 163                     final StringBuilder message = new StringBuilder();
 164                     message.append(resources.getString(R.string.err_json_send_error_head));
 165                     message.append("\n\n");
 166                     message.append(error);
 167                     if (mProfile.getApiVersion()
 168                                 .equals(API.auto))
 169                         message.append(
 170                                 resources.getString(R.string.err_json_send_error_unsupported));
 171                     else {
 172                         message.append(resources.getString(R.string.err_json_send_error_tail));
 173                         builder.setPositiveButton(R.string.btn_profile_options, (dialog, which) -> {
 174                             Logger.debug("error", "will start profile editor");
 175                             MobileLedgerProfile.startEditProfileActivity(context, mProfile);
 176                         });
 177                     }
 178                     builder.setMessage(message);
 179                     builder.create()
 180                            .show();
 181                 }
 182                 else {
 183                     Snackbar.make(list, error, Snackbar.LENGTH_LONG)
 184                             .show();
 185                 }
 186                 keep = true;
 187             }
 188         }
 189
 190         int focused = 0;
 191         if (savedInstanceState != null) {
 192             keep |= savedInstanceState.getBoolean("keep", true);
 193             focused = savedInstanceState.getInt("focused", 0);
 194         }
 195
 196         if (!keep)
 197             viewModel.reset();
 198         else {
 199             viewModel.setFocusedItem(focused);
 200         }
 201
 202         ProgressBar p = activity.findViewById(R.id.progressBar);
 203         viewModel.observeBusyFlag(getViewLifecycleOwner(), isBusy -> {
 204             if (isBusy) {
 205 //                Handler h = new Handler();
 206 //                h.postDelayed(() -> {
 207 //                    if (viewModel.getBusyFlag())
 208 //                        p.setVisibility(View.VISIBLE);
 209 //
 210 //                }, 10);
 211                 p.setVisibility(View.VISIBLE);
 212             }
 213             else
 214                 p.setVisibility(View.INVISIBLE);
 215         });
 216     }
 217     @Override
 218     public void onSaveInstanceState(@NonNull Bundle outState) {
 219         super.onSaveInstanceState(outState);
 220         outState.putBoolean("keep", true);
 221         final int focusedItem = viewModel.getFocusedItem();
 222         outState.putInt("focused", focusedItem);
 223     }
 224     private void onFabPressed() {
 225         fab.hide();
 226         Misc.hideSoftKeyboard(this);
 227         if (mListener != null) {
 228             SimpleDate date = viewModel.getDate();
 229             LedgerTransaction tr =
 230                     new LedgerTransaction(null, date, viewModel.getDescription(), mProfile);
 231
 232             tr.setComment(viewModel.getComment());
 233             LedgerTransactionAccount emptyAmountAccount = null;
 234             float emptyAmountAccountBalance = 0;
 235             for (int i = 0; i < viewModel.getAccountCount(); i++) {
 236                 LedgerTransactionAccount acc =
 237                         new LedgerTransactionAccount(viewModel.getAccount(i));
 238                 if (acc.getAccountName()
 239                        .trim()
 240                        .isEmpty())
 241                     continue;
 242
 243                 if (acc.isAmountSet()) {
 244                     emptyAmountAccountBalance += acc.getAmount();
 245                 }
 246                 else {
 247                     emptyAmountAccount = acc;
 248                 }
 249
 250                 tr.addAccount(acc);
 251             }
 252
 253             if (emptyAmountAccount != null)
 254                 emptyAmountAccount.setAmount(-emptyAmountAccountBalance);
 255
 256             mListener.onTransactionSave(tr);
 257         }
 258     }
 259
 260     @Override
 261     public void onAttach(@NotNull Context context) {
 262         super.onAttach(context);
 263         if (context instanceof OnNewTransactionFragmentInteractionListener) {
 264             mListener = (OnNewTransactionFragmentInteractionListener) context;
 265         }
 266         else {
 267             throw new RuntimeException(
 268                     context.toString() + " must implement OnFragmentInteractionListener");
 269         }
 270     }
 271
 272     @Override
 273     public void onDetach() {
 274         super.onDetach();
 275         mListener = null;
 276     }
 277
 278     /**
 279      * This interface must be implemented by activities that contain this
 280      * fragment to allow an interaction in this fragment to be communicated
 281      * to the activity and potentially other fragments contained in that
 282      * activity.
 283      * <p>
 284      * See the Android Training lesson <a href=
 285      * "http://developer.android.com/training/basics/fragments/communicating.html"
 286      * >Communicating with Other Fragments</a> for more information.
 287      */
 288     public interface OnNewTransactionFragmentInteractionListener {
 289         void onTransactionSave(LedgerTransaction tr);
 290     }
 291 }