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

   1 /*
   2  * Copyright © 2019 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.os.Bundle;
  22 import android.renderscript.RSInvalidStateException;
  23 import android.view.LayoutInflater;
  24 import android.view.Menu;
  25 import android.view.MenuInflater;
  26 import android.view.MenuItem;
  27 import android.view.View;
  28 import android.view.ViewGroup;
  29 import android.widget.ProgressBar;
  30
  31 import androidx.annotation.NonNull;
  32 import androidx.annotation.Nullable;
  33 import androidx.fragment.app.Fragment;
  34 import androidx.fragment.app.FragmentActivity;
  35 import androidx.lifecycle.ViewModelProvider;
  36 import androidx.recyclerview.widget.LinearLayoutManager;
  37 import androidx.recyclerview.widget.RecyclerView;
  38
  39 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  40 import com.google.android.material.snackbar.Snackbar;
  41
  42 import net.ktnx.mobileledger.R;
  43 import net.ktnx.mobileledger.model.Data;
  44 import net.ktnx.mobileledger.model.LedgerTransaction;
  45 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  46 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  47 import net.ktnx.mobileledger.utils.Logger;
  48 import net.ktnx.mobileledger.utils.Misc;
  49
  50 import org.jetbrains.annotations.NotNull;
  51
  52 import java.util.Date;
  53
  54 /**
  55  * A simple {@link Fragment} subclass.
  56  * Activities that contain this fragment must implement the
  57  * {@link OnNewTransactionFragmentInteractionListener} interface
  58  * to handle interaction events.
  59  */
  60
  61 // TODO: offer to undo account remove-on-swipe
  62 // TODO: transaction-level comment
  63
  64 public class NewTransactionFragment extends Fragment {
  65     private NewTransactionItemsAdapter listAdapter;
  66     private NewTransactionModel viewModel;
  67     private RecyclerView list;
  68     private FloatingActionButton fab;
  69     private OnNewTransactionFragmentInteractionListener mListener;
  70     private MobileLedgerProfile mProfile;
  71     public NewTransactionFragment() {
  72         // Required empty public constructor
  73         setHasOptionsMenu(true);
  74     }
  75     @Override
  76     public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
  77         super.onCreateOptionsMenu(menu, inflater);
  78         final FragmentActivity activity = getActivity();
  79
  80         inflater.inflate(R.menu.new_transaction_fragment, menu);
  81         menu.findItem(R.id.action_reset_new_transaction_activity)
  82             .setOnMenuItemClickListener(item -> {
  83                 listAdapter.reset();
  84                 return true;
  85             });
  86
  87         final MenuItem toggleCurrencyItem = menu.findItem(R.id.toggle_currency);
  88         toggleCurrencyItem.setOnMenuItemClickListener(item -> {
  89             viewModel.toggleCurrencyVisible();
  90             return true;
  91         });
  92         if (activity != null)
  93             viewModel.showCurrency.observe(activity, toggleCurrencyItem::setChecked);
  94
  95         final MenuItem toggleCommentsItem = menu.findItem(R.id.toggle_comments);
  96         toggleCommentsItem.setOnMenuItemClickListener(item -> {
  97             viewModel.toggleShowComments();
  98             return true;
  99         });
 100         if (activity != null)
 101             viewModel.showComments.observe(activity, toggleCommentsItem::setChecked);
 102     }
 103     @Override
 104     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 105                              Bundle savedInstanceState) {
 106         // Inflate the layout for this fragment
 107         return inflater.inflate(R.layout.fragment_new_transaction, container, false);
 108     }
 109
 110     @Override
 111     public void onActivityCreated(@Nullable Bundle savedInstanceState) {
 112         super.onActivityCreated(savedInstanceState);
 113         FragmentActivity activity = getActivity();
 114         if (activity == null)
 115             throw new RSInvalidStateException(
 116                     "getActivity() returned null within onActivityCreated()");
 117
 118         list = activity.findViewById(R.id.new_transaction_accounts);
 119         viewModel = new ViewModelProvider(activity).get(NewTransactionModel.class);
 120         viewModel.observeDataProfile(this);
 121         mProfile = Data.profile.getValue();
 122         listAdapter = new NewTransactionItemsAdapter(viewModel, mProfile);
 123         list.setAdapter(listAdapter);
 124         list.setLayoutManager(new LinearLayoutManager(activity));
 125         Data.profile.observe(getViewLifecycleOwner(), profile -> {
 126             mProfile = profile;
 127             listAdapter.setProfile(profile);
 128         });
 129         listAdapter.notifyDataSetChanged();
 130         viewModel.isSubmittable()
 131                  .observe(getViewLifecycleOwner(), isSubmittable -> {
 132                      if (isSubmittable) {
 133                          if (fab != null) {
 134                              fab.show();
 135                              fab.setEnabled(true);
 136                          }
 137                      }
 138                      else {
 139                          if (fab != null) {
 140                              fab.hide();
 141                          }
 142                      }
 143                  });
 144 //        viewModel.checkTransactionSubmittable(listAdapter);
 145
 146         fab = activity.findViewById(R.id.fab);
 147         fab.setOnClickListener(v -> onFabPressed());
 148
 149         boolean keep = false;
 150
 151         Bundle args = getArguments();
 152         if (args != null) {
 153             String error = args.getString("error");
 154             if (error != null) {
 155                 Logger.debug("new-trans-f", String.format("Got error: %s", error));
 156                 Snackbar.make(list, error, Snackbar.LENGTH_LONG)
 157                         .show();
 158                 keep = true;
 159             }
 160         }
 161
 162         int focused = 0;
 163         if (savedInstanceState != null) {
 164             keep |= savedInstanceState.getBoolean("keep", true);
 165             focused = savedInstanceState.getInt("focused", 0);
 166         }
 167
 168         if (!keep)
 169             viewModel.reset();
 170         else {
 171             viewModel.setFocusedItem(focused);
 172         }
 173
 174         ProgressBar p = activity.findViewById(R.id.progressBar);
 175         viewModel.observeBusyFlag(getViewLifecycleOwner(), isBusy -> {
 176             if (isBusy) {
 177 //                Handler h = new Handler();
 178 //                h.postDelayed(() -> {
 179 //                    if (viewModel.getBusyFlag())
 180 //                        p.setVisibility(View.VISIBLE);
 181 //
 182 //                }, 10);
 183                         p.setVisibility(View.VISIBLE);
 184             }
 185             else
 186                 p.setVisibility(View.INVISIBLE);
 187         });
 188     }
 189     @Override
 190     public void onSaveInstanceState(@NonNull Bundle outState) {
 191         super.onSaveInstanceState(outState);
 192         outState.putBoolean("keep", true);
 193         final int focusedItem = viewModel.getFocusedItem();
 194         outState.putInt("focused", focusedItem);
 195     }
 196     private void onFabPressed() {
 197         fab.setEnabled(false);
 198         Misc.hideSoftKeyboard(this);
 199         if (mListener != null) {
 200             Date date = viewModel.getDate();
 201             LedgerTransaction tr =
 202                     new LedgerTransaction(null, date, viewModel.getDescription(), mProfile);
 203
 204             tr.setComment(viewModel.getComment());
 205             LedgerTransactionAccount emptyAmountAccount = null;
 206             float emptyAmountAccountBalance = 0;
 207             for (int i = 0; i < viewModel.getAccountCount(); i++) {
 208                 LedgerTransactionAccount acc =
 209                         new LedgerTransactionAccount(viewModel.getAccount(i));
 210                 if (acc.getAccountName()
 211                        .trim()
 212                        .isEmpty())
 213                     continue;
 214
 215                 if (acc.isAmountSet()) {
 216                     emptyAmountAccountBalance += acc.getAmount();
 217                 }
 218                 else {
 219                     emptyAmountAccount = acc;
 220                 }
 221
 222                 tr.addAccount(acc);
 223             }
 224
 225             if (emptyAmountAccount != null)
 226                 emptyAmountAccount.setAmount(-emptyAmountAccountBalance);
 227
 228             mListener.onTransactionSave(tr);
 229         }
 230     }
 231
 232     @Override
 233     public void onAttach(@NotNull Context context) {
 234         super.onAttach(context);
 235         if (context instanceof OnNewTransactionFragmentInteractionListener) {
 236             mListener = (OnNewTransactionFragmentInteractionListener) context;
 237         }
 238         else {
 239             throw new RuntimeException(
 240                     context.toString() + " must implement OnFragmentInteractionListener");
 241         }
 242     }
 243
 244     @Override
 245     public void onDetach() {
 246         super.onDetach();
 247         mListener = null;
 248     }
 249
 250     /**
 251      * This interface must be implemented by activities that contain this
 252      * fragment to allow an interaction in this fragment to be communicated
 253      * to the activity and potentially other fragments contained in that
 254      * activity.
 255      * <p>
 256      * See the Android Training lesson <a href=
 257      * "http://developer.android.com/training/basics/fragments/communicating.html"
 258      * >Communicating with Other Fragments</a> for more information.
 259      */
 260     public interface OnNewTransactionFragmentInteractionListener {
 261         void onTransactionSave(LedgerTransaction tr);
 262     }
 263 }