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

   1 /*
   2  * Copyright © 2021 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.new_transaction;
  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.snackbar.Snackbar;
  42
  43 import net.ktnx.mobileledger.R;
  44 import net.ktnx.mobileledger.json.API;
  45 import net.ktnx.mobileledger.model.Data;
  46 import net.ktnx.mobileledger.model.LedgerTransaction;
  47 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  48 import net.ktnx.mobileledger.ui.QR;
  49 import net.ktnx.mobileledger.utils.Logger;
  50
  51 import org.jetbrains.annotations.NotNull;
  52
  53 /**
  54  * A simple {@link Fragment} subclass.
  55  * Activities that contain this fragment must implement the
  56  * {@link OnNewTransactionFragmentInteractionListener} interface
  57  * to handle interaction events.
  58  */
  59
  60 // TODO: offer to undo account remove-on-swipe
  61
  62 public class NewTransactionFragment extends Fragment {
  63     private NewTransactionItemsAdapter listAdapter;
  64     private NewTransactionModel viewModel;
  65     private OnNewTransactionFragmentInteractionListener mListener;
  66     private MobileLedgerProfile mProfile;
  67     public NewTransactionFragment() {
  68         // Required empty public constructor
  69         setHasOptionsMenu(true);
  70     }
  71     @Override
  72     public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
  73         super.onCreateOptionsMenu(menu, inflater);
  74         final FragmentActivity activity = getActivity();
  75
  76         inflater.inflate(R.menu.new_transaction_fragment, menu);
  77
  78         menu.findItem(R.id.scan_qr)
  79             .setOnMenuItemClickListener(this::onScanQrAction);
  80
  81         menu.findItem(R.id.action_reset_new_transaction_activity)
  82             .setOnMenuItemClickListener(item -> {
  83                 viewModel.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.getShowCurrency()
  94                      .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.getShowComments()
 103                      .observe(activity, toggleCommentsItem::setChecked);
 104     }
 105     private boolean onScanQrAction(MenuItem item) {
 106         try {
 107             Context ctx = requireContext();
 108             if (ctx instanceof QR.QRScanTrigger)
 109                 ((QR.QRScanTrigger) ctx).triggerQRScan();
 110         }
 111         catch (Exception e) {
 112             Logger.debug("qr", "Error launching QR scanner", e);
 113         }
 114
 115         return true;
 116     }
 117     @Override
 118     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 119                              Bundle savedInstanceState) {
 120         // Inflate the layout for this fragment
 121         return inflater.inflate(R.layout.fragment_new_transaction, container, false);
 122     }
 123
 124     @Override
 125     public void onViewCreated(@NotNull View view, @Nullable Bundle savedInstanceState) {
 126         super.onViewCreated(view, savedInstanceState);
 127         FragmentActivity activity = getActivity();
 128         if (activity == null)
 129             throw new RSInvalidStateException(
 130                     "getActivity() returned null within onActivityCreated()");
 131
 132         viewModel = new ViewModelProvider(activity).get(NewTransactionModel.class);
 133         viewModel.observeDataProfile(this);
 134         mProfile = Data.getProfile();
 135         listAdapter = new NewTransactionItemsAdapter(viewModel, mProfile);
 136
 137         viewModel.getItems()
 138                  .observe(getViewLifecycleOwner(), newList -> listAdapter.setItems(newList));
 139
 140         RecyclerView list = activity.findViewById(R.id.new_transaction_accounts);
 141         list.setAdapter(listAdapter);
 142         list.setLayoutManager(new LinearLayoutManager(activity));
 143
 144         Data.observeProfile(getViewLifecycleOwner(), profile -> {
 145             mProfile = profile;
 146             listAdapter.setProfile(profile);
 147         });
 148         boolean keep = false;
 149
 150         Bundle args = getArguments();
 151         if (args != null) {
 152             String error = args.getString("error");
 153             if (error != null) {
 154                 Logger.debug("new-trans-f", String.format("Got error: %s", error));
 155
 156                 Context context = getContext();
 157                 if (context != null) {
 158                     AlertDialog.Builder builder = new AlertDialog.Builder(context);
 159                     final Resources resources = context.getResources();
 160                     final StringBuilder message = new StringBuilder();
 161                     message.append(resources.getString(R.string.err_json_send_error_head));
 162                     message.append("\n\n");
 163                     message.append(error);
 164                     if (mProfile.getApiVersion()
 165                                 .equals(API.auto))
 166                         message.append(
 167                                 resources.getString(R.string.err_json_send_error_unsupported));
 168                     else {
 169                         message.append(resources.getString(R.string.err_json_send_error_tail));
 170                         builder.setPositiveButton(R.string.btn_profile_options, (dialog, which) -> {
 171                             Logger.debug("error", "will start profile editor");
 172                             MobileLedgerProfile.startEditProfileActivity(context, mProfile);
 173                         });
 174                     }
 175                     builder.setMessage(message);
 176                     builder.create()
 177                            .show();
 178                 }
 179                 else {
 180                     Snackbar.make(list, error, Snackbar.LENGTH_INDEFINITE)
 181                             .show();
 182                 }
 183                 keep = true;
 184             }
 185         }
 186
 187         int focused = 0;
 188         FocusedElement element = null;
 189         if (savedInstanceState != null) {
 190             keep |= savedInstanceState.getBoolean("keep", true);
 191             focused = savedInstanceState.getInt("focused-item", 0);
 192             element = FocusedElement.valueOf(savedInstanceState.getString("focused-element"));
 193         }
 194
 195         if (!keep)
 196             viewModel.reset();
 197         else {
 198             viewModel.noteFocusChanged(focused, element);
 199         }
 200
 201         ProgressBar p = activity.findViewById(R.id.progressBar);
 202         viewModel.getBusyFlag()
 203                  .observe(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 NewTransactionModel.FocusInfo focusInfo = viewModel.getFocusInfo()
 222                                                                  .getValue();
 223         final int focusedItem = focusInfo.position;
 224         if (focusedItem >= 0)
 225             outState.putInt("focused-item", focusedItem);
 226         outState.putString("focused-element", focusInfo.element.toString());
 227     }
 228
 229     @Override
 230     public void onAttach(@NotNull Context context) {
 231         super.onAttach(context);
 232         if (context instanceof OnNewTransactionFragmentInteractionListener) {
 233             mListener = (OnNewTransactionFragmentInteractionListener) context;
 234         }
 235         else {
 236             throw new RuntimeException(
 237                     context.toString() + " must implement OnFragmentInteractionListener");
 238         }
 239     }
 240
 241     @Override
 242     public void onDetach() {
 243         super.onDetach();
 244         mListener = null;
 245     }
 246
 247     /**
 248      * This interface must be implemented by activities that contain this
 249      * fragment to allow an interaction in this fragment to be communicated
 250      * to the activity and potentially other fragments contained in that
 251      * activity.
 252      * <p>
 253      * See the Android Training lesson <a href=
 254      * "http://developer.android.com/training/basics/fragments/communicating.html"
 255      * >Communicating with Other Fragments</a> for more information.
 256      */
 257     public interface OnNewTransactionFragmentInteractionListener {
 258         void onTransactionSave(LedgerTransaction tr);
 259     }
 260 }