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.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.appcompat.app.AlertDialog;
  34 import androidx.fragment.app.Fragment;
  35 import androidx.fragment.app.FragmentActivity;
  36 import androidx.lifecycle.ViewModelProvider;
  37 import androidx.recyclerview.widget.LinearLayoutManager;
  38 import androidx.recyclerview.widget.RecyclerView;
  39
  40 import com.google.android.material.snackbar.Snackbar;
  41
  42 import net.ktnx.mobileledger.R;
  43 import net.ktnx.mobileledger.db.Profile;
  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.ui.FabManager;
  48 import net.ktnx.mobileledger.ui.QR;
  49 import net.ktnx.mobileledger.ui.profiles.ProfileDetailActivity;
  50 import net.ktnx.mobileledger.utils.Logger;
  51
  52 import org.jetbrains.annotations.NotNull;
  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
  63 public class NewTransactionFragment extends Fragment {
  64     private NewTransactionItemsAdapter listAdapter;
  65     private NewTransactionModel viewModel;
  66     private OnNewTransactionFragmentInteractionListener mListener;
  67     private Profile mProfile;
  68     public NewTransactionFragment() {
  69         // Required empty public constructor
  70         setHasOptionsMenu(true);
  71     }
  72     @Override
  73     public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
  74         super.onCreateOptionsMenu(menu, inflater);
  75         final FragmentActivity activity = getActivity();
  76
  77         inflater.inflate(R.menu.new_transaction_fragment, menu);
  78
  79         menu.findItem(R.id.scan_qr)
  80             .setOnMenuItemClickListener(this::onScanQrAction);
  81
  82         menu.findItem(R.id.action_reset_new_transaction_activity)
  83             .setOnMenuItemClickListener(item -> {
  84                 viewModel.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.getShowCurrency()
  95                      .observe(activity, toggleCurrencyItem::setChecked);
  96
  97         final MenuItem toggleCommentsItem = menu.findItem(R.id.toggle_comments);
  98         toggleCommentsItem.setOnMenuItemClickListener(item -> {
  99             viewModel.toggleShowComments();
 100             return true;
 101         });
 102         if (activity != null)
 103             viewModel.getShowComments()
 104                      .observe(activity, toggleCommentsItem::setChecked);
 105     }
 106     private boolean onScanQrAction(MenuItem item) {
 107         try {
 108             Context ctx = requireContext();
 109             if (ctx instanceof QR.QRScanTrigger)
 110                 ((QR.QRScanTrigger) ctx).triggerQRScan();
 111         }
 112         catch (Exception e) {
 113             Logger.debug("qr", "Error launching QR scanner", e);
 114         }
 115
 116         return true;
 117     }
 118     @Override
 119     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 120                              Bundle savedInstanceState) {
 121         // Inflate the layout for this fragment
 122         return inflater.inflate(R.layout.fragment_new_transaction, container, false);
 123     }
 124
 125     @Override
 126     public void onViewCreated(@NotNull View view, @Nullable Bundle savedInstanceState) {
 127         super.onViewCreated(view, savedInstanceState);
 128         FragmentActivity activity = getActivity();
 129         if (activity == null)
 130             throw new IllegalStateException(
 131                     "getActivity() returned null within onActivityCreated()");
 132
 133         viewModel = new ViewModelProvider(activity).get(NewTransactionModel.class);
 134         viewModel.observeDataProfile(this);
 135         mProfile = Data.getProfile();
 136         listAdapter = new NewTransactionItemsAdapter(viewModel, mProfile);
 137
 138         viewModel.getItems()
 139                  .observe(getViewLifecycleOwner(), newList -> listAdapter.setItems(newList));
 140
 141         RecyclerView list = activity.findViewById(R.id.new_transaction_accounts);
 142         list.setAdapter(listAdapter);
 143         list.setLayoutManager(new LinearLayoutManager(activity));
 144
 145         Data.observeProfile(getViewLifecycleOwner(), profile -> {
 146             mProfile = profile;
 147             listAdapter.setProfile(profile);
 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
 157                 Context context = getContext();
 158                 if (context != null) {
 159                     AlertDialog.Builder builder = new AlertDialog.Builder(context);
 160                     final Resources resources = context.getResources();
 161                     final StringBuilder message = new StringBuilder();
 162                     message.append(resources.getString(R.string.err_json_send_error_head))
 163                            .append("\n\n")
 164                            .append(error)
 165                            .append("\n\n");
 166                     if (API.valueOf(mProfile.getApiVersion())
 167                            .equals(API.auto))
 168                         message.append(
 169                                 resources.getString(R.string.err_json_send_error_unsupported));
 170                     else {
 171                         message.append(resources.getString(R.string.err_json_send_error_tail));
 172                         builder.setPositiveButton(R.string.btn_profile_options, (dialog, which) -> {
 173                             Logger.debug("error", "will start profile editor");
 174                             ProfileDetailActivity.start(context, mProfile);
 175                         });
 176                     }
 177                     builder.setMessage(message);
 178                     builder.create()
 179                            .show();
 180                 }
 181                 else {
 182                     Snackbar.make(list, error, Snackbar.LENGTH_INDEFINITE)
 183                             .show();
 184                 }
 185                 keep = true;
 186             }
 187         }
 188
 189         int focused = 0;
 190         FocusedElement element = null;
 191         if (savedInstanceState != null) {
 192             keep |= savedInstanceState.getBoolean("keep", true);
 193             focused = savedInstanceState.getInt("focused-item", 0);
 194             final String focusedElementString = savedInstanceState.getString("focused-element");
 195             if (focusedElementString != null)
 196                 element = FocusedElement.valueOf(focusedElementString);
 197         }
 198
 199         if (!keep) {
 200             // we need the DB up and running
 201             Data.observeProfile(getViewLifecycleOwner(), p -> {
 202                 if (p != null)
 203                     viewModel.reset();
 204             });
 205         }
 206         else {
 207             viewModel.noteFocusChanged(focused, element);
 208         }
 209
 210         ProgressBar p = activity.findViewById(R.id.progressBar);
 211         viewModel.getBusyFlag()
 212                  .observe(getViewLifecycleOwner(), isBusy -> {
 213                      if (isBusy) {
 214 //                Handler h = new Handler();
 215 //                h.postDelayed(() -> {
 216 //                    if (viewModel.getBusyFlag())
 217 //                        p.setVisibility(View.VISIBLE);
 218 //
 219 //                }, 10);
 220                          p.setVisibility(View.VISIBLE);
 221                      }
 222                      else
 223                          p.setVisibility(View.INVISIBLE);
 224                  });
 225
 226         if (activity instanceof FabManager.FabHandler)
 227             FabManager.handle((FabManager.FabHandler) activity, list);
 228     }
 229     @Override
 230     public void onSaveInstanceState(@NonNull Bundle outState) {
 231         super.onSaveInstanceState(outState);
 232         outState.putBoolean("keep", true);
 233         final NewTransactionModel.FocusInfo focusInfo = viewModel.getFocusInfo()
 234                                                                  .getValue();
 235         if (focusInfo != null) {
 236             final int focusedItem = focusInfo.position;
 237             if (focusedItem >= 0)
 238                 outState.putInt("focused-item", focusedItem);
 239             if (focusInfo.element != null)
 240                 outState.putString("focused-element", focusInfo.element.toString());
 241         }
 242     }
 243
 244     @Override
 245     public void onAttach(@NotNull Context context) {
 246         super.onAttach(context);
 247         if (context instanceof OnNewTransactionFragmentInteractionListener) {
 248             mListener = (OnNewTransactionFragmentInteractionListener) context;
 249         }
 250         else {
 251             throw new RuntimeException(
 252                     context.toString() + " must implement OnFragmentInteractionListener");
 253         }
 254     }
 255
 256     @Override
 257     public void onDetach() {
 258         super.onDetach();
 259         mListener = null;
 260     }
 261
 262     /**
 263      * This interface must be implemented by activities that contain this
 264      * fragment to allow an interaction in this fragment to be communicated
 265      * to the activity and potentially other fragments contained in that
 266      * activity.
 267      * <p>
 268      * See the Android Training lesson <a href=
 269      * "http://developer.android.com/training/basics/fragments/communicating.html"
 270      * >Communicating with Other Fragments</a> for more information.
 271      */
 272     public interface OnNewTransactionFragmentInteractionListener {
 273         void onTransactionSave(LedgerTransaction tr);
 274     }
 275 }