app/src/main/java/net/ktnx/mobileledger/ui/account_summary/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.ui.account_summary;
  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.R;
  40 import net.ktnx.mobileledger.model.LedgerAccount;
  41 import net.ktnx.mobileledger.utils.MLDB;
  42
  43 import java.util.ArrayList;
  44 import java.util.List;
  45
  46 import static net.ktnx.mobileledger.ui.activity.SettingsActivity.PREF_KEY_SHOW_ONLY_STARRED_ACCOUNTS;
  47
  48 class AccountSummaryViewModel extends AndroidViewModel {
  49     private List<LedgerAccount> accounts;
  50
  51     public AccountSummaryViewModel(@NonNull Application application) {
  52         super(application);
  53     }
  54
  55     List<LedgerAccount> getAccounts(Context context) {
  56         if (accounts == null) {
  57             accounts = new ArrayList<>();
  58             reloadAccounts(context);
  59         }
  60
  61         return accounts;
  62     }
  63
  64     void reloadAccounts(Context context) {
  65         accounts.clear();
  66         boolean showingOnlyStarred =
  67                 PreferenceManager.getDefaultSharedPreferences(getApplication())
  68                         .getBoolean(PREF_KEY_SHOW_ONLY_STARRED_ACCOUNTS, false);
  69         String sql = "SELECT name, hidden FROM accounts";
  70         if (showingOnlyStarred) sql += " WHERE hidden = 0";
  71         sql += " ORDER BY name";
  72
  73         try (SQLiteDatabase db = MLDB.getReadableDatabase()) {
  74             try (Cursor cursor = db
  75                     .rawQuery(sql,null))
  76             {
  77                 while (cursor.moveToNext()) {
  78                     LedgerAccount acc = new LedgerAccount(cursor.getString(0));
  79                     acc.setHidden(cursor.getInt(1) == 1);
  80                     try (Cursor c2 = db.rawQuery(
  81                             "SELECT value, currency FROM account_values " + "WHERE account = ?",
  82                             new String[]{acc.getName()}))
  83                     {
  84                         while (c2.moveToNext()) {
  85                             acc.addAmount(c2.getFloat(0), c2.getString(1));
  86                         }
  87                     }
  88                     accounts.add(acc);
  89                 }
  90             }
  91         }
  92     }
  93     void commitSelections(Context context) {
  94         try(SQLiteDatabase db = MLDB.getWritableDatabase(context)) {
  95             db.beginTransaction();
  96             try {
  97                 for (LedgerAccount acc : accounts) {
  98                     Log.d("db", String.format("Setting %s to %s", acc.getName(),
  99                             acc.isHidden() ? "hidden" : "starred"));
 100                     db.execSQL("UPDATE accounts SET hidden=? WHERE name=?",
 101                             new Object[]{acc.isHiddenToBe() ? 1 : 0, acc.getName()});
 102                 }
 103                 db.setTransactionSuccessful();
 104                 for (LedgerAccount acc : accounts ) { acc.setHidden(acc.isHiddenToBe()); }
 105             }
 106             finally { db.endTransaction(); }
 107         }
 108     }
 109 }
 110
 111 class AccountSummaryAdapter extends RecyclerView.Adapter<AccountSummaryAdapter
 112 .LedgerRowHolder> {
 113     private List<LedgerAccount> accounts;
 114     private boolean selectionActive;
 115
 116     AccountSummaryAdapter(List<LedgerAccount> accounts) {
 117         this.accounts = accounts;
 118         this.selectionActive = false;
 119     }
 120
 121     public void onBindViewHolder(@NonNull LedgerRowHolder holder, int position) {
 122         LedgerAccount acc = accounts.get(position);
 123         Context ctx = holder.row.getContext();
 124         Resources rm = ctx.getResources();
 125
 126         holder.tvAccountName.setText(acc.getShortName());
 127         holder.tvAccountName.setPadding(
 128                 acc.getLevel() * rm.getDimensionPixelSize(R.dimen.activity_horizontal_margin) / 2,
 129                 0, 0,
 130                 0);
 131         holder.tvAccountAmounts.setText(acc.getAmountsString());
 132
 133         if (acc.isHidden()) {
 134             holder.tvAccountName.setTypeface(null, Typeface.ITALIC);
 135             holder.tvAccountAmounts.setTypeface(null, Typeface.ITALIC);
 136         }
 137         else {
 138             holder.tvAccountName.setTypeface(null, Typeface.NORMAL);
 139             holder.tvAccountAmounts.setTypeface(null, Typeface.NORMAL);
 140         }
 141
 142         if (position % 2 == 0) {
 143             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) holder.row
 144                     .setBackgroundColor(rm.getColor(R.color.table_row_even_bg, ctx.getTheme()));
 145             else holder.row.setBackgroundColor(rm.getColor(R.color.table_row_even_bg));
 146         }
 147         else {
 148             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) holder.row
 149                     .setBackgroundColor(rm.getColor(R.color.drawer_background, ctx.getTheme()));
 150             else holder.row.setBackgroundColor(rm.getColor(R.color.drawer_background));
 151         }
 152
 153         holder.selectionCb.setVisibility( selectionActive ? View.VISIBLE : View.GONE);
 154         holder.selectionCb.setChecked(!acc.isHiddenToBe());
 155
 156         holder.row.setTag(R.id.POS, position);
 157     }
 158
 159     @NonNull
 160     @Override
 161     public LedgerRowHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
 162         View row = LayoutInflater.from(parent.getContext())
 163                 .inflate(R.layout.account_summary_row, parent, false);
 164         return new LedgerRowHolder(row);
 165     }
 166
 167     @Override
 168     public int getItemCount() {
 169         return accounts.size();
 170     }
 171     public void startSelection() {
 172         for( LedgerAccount acc : accounts ) acc.setHiddenToBe(acc.isHidden());
 173         this.selectionActive = true;
 174         notifyDataSetChanged();
 175     }
 176
 177     public void stopSelection() {
 178         this.selectionActive = false;
 179         notifyDataSetChanged();
 180     }
 181
 182     public boolean isSelectionActive() {
 183         return selectionActive;
 184     }
 185
 186     public void selectItem(int position) {
 187         LedgerAccount acc = accounts.get(position);
 188         acc.toggleHiddenToBe();
 189         toggleChildrenOf(acc, acc.isHiddenToBe());
 190         notifyDataSetChanged();
 191     }
 192     void toggleChildrenOf(LedgerAccount parent, boolean hiddenToBe) {
 193         for (LedgerAccount acc : accounts) {
 194             String acc_parent = acc.getParentName();
 195             if ((acc_parent != null) && acc.getParentName().equals(parent.getName())) {
 196                 acc.setHiddenToBe(hiddenToBe);
 197                 toggleChildrenOf(acc, hiddenToBe);
 198             }
 199         }
 200     }
 201     class LedgerRowHolder extends RecyclerView.ViewHolder {
 202         CheckBox selectionCb;
 203         TextView tvAccountName, tvAccountAmounts;
 204         LinearLayout row;
 205         public LedgerRowHolder(@NonNull View itemView) {
 206             super(itemView);
 207             this.row = (LinearLayout) itemView;
 208             this.tvAccountName = itemView.findViewById(R.id.account_row_acc_name);
 209             this.tvAccountAmounts = itemView.findViewById(R.id.account_row_acc_amounts);
 210             this.selectionCb = itemView.findViewById(R.id.account_row_check);
 211         }
 212     }
 213 }