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