app/src/main/java/net/ktnx/mobileledger/AccountSummaryViewModel.java

   1 /*
   2  * Copyright © 2018 Damyan Ivanov.
   3  * This file is part of Mobile-Ledger.
   4  * Mobile-Ledger 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  * Mobile-Ledger 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 Mobile-Ledger. If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.ktnx.mobileledger;
  19
  20 import android.app.Application;
  21 import android.arch.lifecycle.AndroidViewModel;
  22 import android.content.Context;
  23 import android.content.res.Resources;
  24 import android.database.Cursor;
  25 import android.database.sqlite.SQLiteDatabase;
  26 import android.graphics.Typeface;
  27 import android.os.Build;
  28 import android.preference.PreferenceManager;
  29 import android.support.annotation.NonNull;
  30 import android.support.v7.widget.RecyclerView;
  31 import android.util.Log;
  32 import android.view.LayoutInflater;
  33 import android.view.View;
  34 import android.view.ViewGroup;
  35 import android.widget.CheckBox;
  36 import android.widget.LinearLayout;
  37 import android.widget.TextView;
  38
  39 import net.ktnx.mobileledger.model.LedgerAccount;
  40 import net.ktnx.mobileledger.utils.MLDB;
  41
  42 import java.util.ArrayList;
  43 import java.util.List;
  44
  45 import static net.ktnx.mobileledger.SettingsActivity.PREF_KEY_SHOW_ONLY_STARRED_ACCOUNTS;
  46
  47 class AccountSummaryViewModel extends AndroidViewModel {
  48     private List<LedgerAccount> accounts;
  49
  50     public AccountSummaryViewModel(@NonNull Application application) {
  51         super(application);
  52     }
  53
  54     List<LedgerAccount> getAccounts(Context context) {
  55         if (accounts == null) {
  56             accounts = new ArrayList<>();
  57             reloadAccounts(context);
  58         }
  59
  60         return accounts;
  61     }
  62
  63     void reloadAccounts(Context context) {
  64         accounts.clear();
  65         boolean showingOnlyStarred =
  66                 PreferenceManager.getDefaultSharedPreferences(getApplication())
  67                         .getBoolean(PREF_KEY_SHOW_ONLY_STARRED_ACCOUNTS, false);
  68         String sql = "SELECT name, hidden FROM accounts";
  69         if (showingOnlyStarred) sql += " WHERE hidden = 0";
  70         sql += " ORDER BY name";
  71
  72         try (SQLiteDatabase db = MLDB.getReadableDatabase(context)) {
  73             try (Cursor cursor = db
  74                     .rawQuery(sql,null))
  75             {
  76                 while (cursor.moveToNext()) {
  77                     LedgerAccount acc = new LedgerAccount(cursor.getString(0));
  78                     acc.setHidden(cursor.getInt(1) == 1);
  79                     try (Cursor c2 = db.rawQuery(
  80                             "SELECT value, currency FROM account_values " + "WHERE account = ?",
  81                             new String[]{acc.getName()}))
  82                     {
  83                         while (c2.moveToNext()) {
  84                             acc.addAmount(c2.getFloat(0), c2.getString(1));
  85                         }
  86                     }
  87                     accounts.add(acc);
  88                 }
  89             }
  90         }
  91     }
  92     void commitSelections(Context context) {
  93         try(SQLiteDatabase db = MLDB.getWritableDatabase(context)) {
  94             db.beginTransaction();
  95             try {
  96                 for (LedgerAccount acc : accounts) {
  97                     Log.d("db", String.format("Setting %s to %s", acc.getName(),
  98                             acc.isHidden() ? "hidden" : "starred"));
  99                     db.execSQL("UPDATE accounts SET hidden=? WHERE name=?",
 100                             new Object[]{acc.isHiddenToBe() ? 1 : 0, acc.getName()});
 101                 }
 102                 db.setTransactionSuccessful();
 103                 for (LedgerAccount acc : accounts ) { acc.setHidden(acc.isHiddenToBe()); }
 104             }
 105             finally { db.endTransaction(); }
 106         }
 107     }
 108 }
 109
 110 class AccountSummaryAdapter extends RecyclerView.Adapter<AccountSummaryAdapter.LedgerRowHolder> {
 111     private List<LedgerAccount> accounts;
 112     private boolean selectionActive;
 113
 114     AccountSummaryAdapter(List<LedgerAccount> accounts) {
 115         this.accounts = accounts;
 116         this.selectionActive = false;
 117     }
 118
 119     public void onBindViewHolder(@NonNull LedgerRowHolder holder, int position) {
 120         LedgerAccount acc = accounts.get(position);
 121         Context ctx = holder.row.getContext();
 122         Resources rm = ctx.getResources();
 123
 124         holder.tvAccountName.setText(acc.getShortName());
 125         holder.tvAccountName.setPadding(
 126                 acc.getLevel() * rm.getDimensionPixelSize(R.dimen.activity_horizontal_margin)/2,
 127                 0, 0,
 128                 0);
 129         holder.tvAccountAmounts.setText(acc.getAmountsString());
 130
 131         if (acc.isHidden()) {
 132             holder.tvAccountName.setTypeface(null, Typeface.ITALIC);
 133             holder.tvAccountAmounts.setTypeface(null, Typeface.ITALIC);
 134         }
 135         else {
 136             holder.tvAccountName.setTypeface(null, Typeface.NORMAL);
 137             holder.tvAccountAmounts.setTypeface(null, Typeface.NORMAL);
 138         }
 139
 140         if (position % 2 == 0) {
 141             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) holder.row
 142                     .setBackgroundColor(rm.getColor(R.color.table_row_even_bg, ctx.getTheme()));
 143             else holder.row.setBackgroundColor(rm.getColor(R.color.table_row_even_bg));
 144         }
 145         else {
 146             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) holder.row
 147                     .setBackgroundColor(rm.getColor(R.color.drawer_background, ctx.getTheme()));
 148             else holder.row.setBackgroundColor(rm.getColor(R.color.drawer_background));
 149         }
 150
 151         holder.selectionCb.setVisibility( selectionActive ? View.VISIBLE : View.GONE);
 152         holder.selectionCb.setChecked(!acc.isHiddenToBe());
 153
 154         holder.row.setTag(R.id.POS, position);
 155     }
 156
 157     @NonNull
 158     @Override
 159     public LedgerRowHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
 160         View row = LayoutInflater.from(parent.getContext())
 161                 .inflate(R.layout.account_summary_row, parent, false);
 162         return new LedgerRowHolder(row);
 163     }
 164
 165     @Override
 166     public int getItemCount() {
 167         return accounts.size();
 168     }
 169     public void startSelection() {
 170         for( LedgerAccount acc : accounts ) acc.setHiddenToBe(acc.isHidden());
 171         this.selectionActive = true;
 172         notifyDataSetChanged();
 173     }
 174
 175     public void stopSelection() {
 176         this.selectionActive = false;
 177         notifyDataSetChanged();
 178     }
 179
 180     public boolean isSelectionActive() {
 181         return selectionActive;
 182     }
 183
 184     public void selectItem(int position) {
 185         LedgerAccount acc = accounts.get(position);
 186         acc.toggleHiddenToBe();
 187         toggleChildrenOf(acc, acc.isHiddenToBe());
 188         notifyDataSetChanged();
 189     }
 190     void toggleChildrenOf(LedgerAccount parent, boolean hiddenToBe) {
 191         for (LedgerAccount acc : accounts) {
 192             String acc_parent = acc.getParentName();
 193             if ((acc_parent != null) && acc.getParentName().equals(parent.getName())) {
 194                 acc.setHiddenToBe(hiddenToBe);
 195                 toggleChildrenOf(acc, hiddenToBe);
 196             }
 197         }
 198     }
 199     class LedgerRowHolder extends RecyclerView.ViewHolder {
 200         CheckBox selectionCb;
 201         TextView tvAccountName, tvAccountAmounts;
 202         LinearLayout row;
 203         public LedgerRowHolder(@NonNull View itemView) {
 204             super(itemView);
 205             this.row = (LinearLayout) itemView;
 206             this.tvAccountName = itemView.findViewById(R.id.account_row_acc_name);
 207             this.tvAccountAmounts = itemView.findViewById(R.id.account_row_acc_amounts);
 208             this.selectionCb = itemView.findViewById(R.id.account_row_check);
 209         }
 210     }
 211 }