app/src/main/java/net/ktnx/mobileledger/ui/CurrencySelectorRecyclerViewAdapter.java

   1 /*
   2  * Copyright © 2019 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;
  19
  20 import android.view.LayoutInflater;
  21 import android.view.View;
  22 import android.view.ViewGroup;
  23 import android.widget.TextView;
  24
  25 import androidx.recyclerview.widget.ListAdapter;
  26 import androidx.recyclerview.widget.RecyclerView;
  27
  28 import net.ktnx.mobileledger.R;
  29 import net.ktnx.mobileledger.model.Currency;
  30
  31 import org.jetbrains.annotations.NotNull;
  32
  33 /**
  34  * {@link RecyclerView.Adapter} that can display a {@link Currency} and makes a call to the
  35  * specified {@link OnCurrencySelectedListener}.
  36  */
  37 public class CurrencySelectorRecyclerViewAdapter
  38         extends ListAdapter<Currency, CurrencySelectorRecyclerViewAdapter.ViewHolder> {
  39
  40     private OnCurrencySelectedListener currencySelectedListener;
  41     private OnCurrencyLongClickListener currencyLongClickListener;
  42     public CurrencySelectorRecyclerViewAdapter() {
  43         super(Currency.DIFF_CALLBACK);
  44     }
  45     @NotNull
  46     @Override
  47     public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
  48         View view = LayoutInflater.from(parent.getContext())
  49                                   .inflate(R.layout.fragment_currency_selector, parent, false);
  50         return new ViewHolder(view);
  51     }
  52
  53     @Override
  54     public void onBindViewHolder(final ViewHolder holder, int position) {
  55         holder.bindTo(getItem(position));
  56     }
  57     public void setCurrencySelectedListener(OnCurrencySelectedListener listener) {
  58         this.currencySelectedListener = listener;
  59     }
  60     public void resetCurrencySelectedListener() {
  61         currencySelectedListener = null;
  62     }
  63     public void notifyCurrencySelected(Currency currency) {
  64         if (null != currencySelectedListener)
  65             currencySelectedListener.onCurrencySelected(currency);
  66     }
  67     public void setCurrencyLongClickListener(OnCurrencyLongClickListener listener) {
  68         this.currencyLongClickListener = listener;
  69     }
  70     public void resetCurrencyLockClickListener() { currencyLongClickListener = null; }
  71     private void notifyCurrencyLongClicked(Currency mItem) {
  72         if (null != currencyLongClickListener)
  73             currencyLongClickListener.onCurrencyLongClick(mItem);
  74     }
  75
  76     public class ViewHolder extends RecyclerView.ViewHolder {
  77         private final TextView mNameView;
  78         private Currency mItem;
  79
  80         ViewHolder(View view) {
  81             super(view);
  82             mNameView = view.findViewById(R.id.content);
  83
  84             view.setOnClickListener(v -> notifyCurrencySelected(mItem));
  85             view.setOnLongClickListener(v -> {
  86                 notifyCurrencyLongClicked(mItem);
  87                 return false;
  88             });
  89         }
  90
  91         @NotNull
  92         @Override
  93         public String toString() {
  94             return super.toString() + " '" + mNameView.getText() + "'";
  95         }
  96         void bindTo(Currency item) {
  97             mItem = item;
  98             mNameView.setText(item.getName());
  99         }
 100     }
 101 }