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.db.Profile;
  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.ui.FabManager;
  49 import net.ktnx.mobileledger.ui.QR;
  50 import net.ktnx.mobileledger.ui.profiles.ProfileDetailActivity;
  51 import net.ktnx.mobileledger.utils.Logger;
  52
  53 import org.jetbrains.annotations.NotNull;
  54
  55 /**
  56  * A simple {@link Fragment} subclass.
  57  * Activities that contain this fragment must implement the
  58  * {@link OnNewTransactionFragmentInteractionListener} interface
  59  * to handle interaction events.
  60  */
  61
  62 // TODO: offer to undo account remove-on-swipe
  63
  64 public class NewTransactionFragment extends Fragment {
  65     private NewTransactionItemsAdapter listAdapter;
  66     private NewTransactionModel viewModel;
  67     private OnNewTransactionFragmentInteractionListener mListener;
  68     private Profile mProfile;
  69     public NewTransactionFragment() {
  70         // Required empty public constructor
  71         setHasOptionsMenu(true);
  72     }
  73     @Override
  74     public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
  75         super.onCreateOptionsMenu(menu, inflater);
  76         final FragmentActivity activity = getActivity();
  77
  78         inflater.inflate(R.menu.new_transaction_fragment, menu);
  79
  80         menu.findItem(R.id.scan_qr)
  81             .setOnMenuItemClickListener(this::onScanQrAction);
  82
  83         menu.findItem(R.id.action_reset_new_transaction_activity)
  84             .setOnMenuItemClickListener(item -> {
  85                 viewModel.reset();
  86                 return true;
  87             });
  88
  89         final MenuItem toggleCurrencyItem = menu.findItem(R.id.toggle_currency);
  90         toggleCurrencyItem.setOnMenuItemClickListener(item -> {
  91             viewModel.toggleCurrencyVisible();
  92             return true;
  93         });
  94         if (activity != null)
  95             viewModel.getShowCurrency()
  96                      .observe(activity, toggleCurrencyItem::setChecked);
  97
  98         final MenuItem toggleCommentsItem = menu.findItem(R.id.toggle_comments);
  99         toggleCommentsItem.setOnMenuItemClickListener(item -> {
 100             viewModel.toggleShowComments();
 101             return true;
 102         });
 103         if (activity != null)
 104             viewModel.getShowComments()
 105                      .observe(activity, toggleCommentsItem::setChecked);
 106     }
 107     private boolean onScanQrAction(MenuItem item) {
 108         try {
 109             Context ctx = requireContext();
 110             if (ctx instanceof QR.QRScanTrigger)
 111                 ((QR.QRScanTrigger) ctx).triggerQRScan();
 112         }
 113         catch (Exception e) {
 114             Logger.debug("qr", "Error launching QR scanner", e);
 115         }
 116
 117         return true;
 118     }
 119     @Override
 120     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 121                              Bundle savedInstanceState) {
 122         // Inflate the layout for this fragment
 123         return inflater.inflate(R.layout.fragment_new_transaction, container, false);
 124     }
 125
 126     @Override
 127     public void onViewCreated(@NotNull View view, @Nullable Bundle savedInstanceState) {
 128         super.onViewCreated(view, savedInstanceState);
 129         FragmentActivity activity = getActivity();
 130         if (activity == null)
 131             throw new RSInvalidStateException(
 132                     "getActivity() returned null within onActivityCreated()");
 133
 134         viewModel = new ViewModelProvider(activity).get(NewTransactionModel.class);
 135         viewModel.observeDataProfile(this);
 136         mProfile = Data.getProfile();
 137         listAdapter = new NewTransactionItemsAdapter(viewModel, mProfile);
 138
 139         viewModel.getItems()
 140                  .observe(getViewLifecycleOwner(), newList -> listAdapter.setItems(newList));
 141
 142         RecyclerView list = activity.findViewById(R.id.new_transaction_accounts);
 143         list.setAdapter(listAdapter);
 144         list.setLayoutManager(new LinearLayoutManager(activity));
 145
 146         Data.observeProfile(getViewLifecycleOwner(), profile -> {
 147             mProfile = profile;
 148             listAdapter.setProfile(profile);
 149         });
 150         boolean keep = false;
 151
 152         Bundle args = getArguments();
 153         if (args != null) {
 154             String error = args.getString("error");
 155             if (error != null) {
 156                 Logger.debug("new-trans-f", String.format("Got error: %s", error));
 157
 158                 Context context = getContext();
 159                 if (context != null) {
 160                     AlertDialog.Builder builder = new AlertDialog.Builder(context);
 161                     final Resources resources = context.getResources();
 162                     final StringBuilder message = new StringBuilder();
 163                     message.append(resources.getString(R.string.err_json_send_error_head))
 164                            .append("\n\n")
 165                            .append(error)
 166                            .append("\n\n");
 167                     if (API.valueOf(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                             ProfileDetailActivity.start(context, mProfile);
 176                         });
 177                     }
 178                     builder.setMessage(message);
 179                     builder.create()
 180                            .show();
 181                 }
 182                 else {
 183                     Snackbar.make(list, error, Snackbar.LENGTH_INDEFINITE)
 184                             .show();
 185                 }
 186                 keep = true;
 187             }
 188         }
 189
 190         int focused = 0;
 191         FocusedElement element = null;
 192         if (savedInstanceState != null) {
 193             keep |= savedInstanceState.getBoolean("keep", true);
 194             focused = savedInstanceState.getInt("focused-item", 0);
 195             element = FocusedElement.valueOf(savedInstanceState.getString("focused-element"));
 196         }
 197
 198         if (!keep)
 199             viewModel.reset();
 200         else {
 201             viewModel.noteFocusChanged(focused, element);
 202         }
 203
 204         ProgressBar p = activity.findViewById(R.id.progressBar);
 205         viewModel.getBusyFlag()
 206                  .observe(getViewLifecycleOwner(), isBusy -> {
 207                      if (isBusy) {
 208 //                Handler h = new Handler();
 209 //                h.postDelayed(() -> {
 210 //                    if (viewModel.getBusyFlag())
 211 //                        p.setVisibility(View.VISIBLE);
 212 //
 213 //                }, 10);
 214                          p.setVisibility(View.VISIBLE);
 215                      }
 216                      else
 217                          p.setVisibility(View.INVISIBLE);
 218                  });
 219
 220         if (activity instanceof FabManager.FabHandler)
 221             FabManager.handle((FabManager.FabHandler) activity, list);
 222     }
 223     @Override
 224     public void onSaveInstanceState(@NonNull Bundle outState) {
 225         super.onSaveInstanceState(outState);
 226         outState.putBoolean("keep", true);
 227         final NewTransactionModel.FocusInfo focusInfo = viewModel.getFocusInfo()
 228                                                                  .getValue();
 229         final int focusedItem = focusInfo.position;
 230         if (focusedItem >= 0)
 231             outState.putInt("focused-item", focusedItem);
 232         outState.putString("focused-element", focusInfo.element.toString());
 233     }
 234
 235     @Override
 236     public void onAttach(@NotNull Context context) {
 237         super.onAttach(context);
 238         if (context instanceof OnNewTransactionFragmentInteractionListener) {
 239             mListener = (OnNewTransactionFragmentInteractionListener) context;
 240         }
 241         else {
 242             throw new RuntimeException(
 243                     context.toString() + " must implement OnFragmentInteractionListener");
 244         }
 245     }
 246
 247     @Override
 248     public void onDetach() {
 249         super.onDetach();
 250         mListener = null;
 251     }
 252
 253     /**
 254      * This interface must be implemented by activities that contain this
 255      * fragment to allow an interaction in this fragment to be communicated
 256      * to the activity and potentially other fragments contained in that
 257      * activity.
 258      * <p>
 259      * See the Android Training lesson <a href=
 260      * "http://developer.android.com/training/basics/fragments/communicating.html"
 261      * >Communicating with Other Fragments</a> for more information.
 262      */
 263     public interface OnNewTransactionFragmentInteractionListener {
 264         void onTransactionSave(LedgerTransaction tr);
 265     }
 266 }