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[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / ui / CurrencySelectorModel.java
1 /*
2  * Copyright © 2020 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 androidx.lifecycle.LifecycleOwner;
21 import androidx.lifecycle.MutableLiveData;
22 import androidx.lifecycle.Observer;
23 import androidx.lifecycle.ViewModel;
24
25 import net.ktnx.mobileledger.model.Currency;
26
27 import java.util.List;
28
29 public class CurrencySelectorModel extends ViewModel {
30     public final MutableLiveData<List<Currency>> currencies;
31     private final MutableLiveData<Boolean> positionAndPaddingVisible = new MutableLiveData<>(true);
32     private OnCurrencySelectedListener selectionListener;
33     public CurrencySelectorModel() {
34         this.currencies = new MutableLiveData<>();
35     }
36     public void showPositionAndPadding() {
37         positionAndPaddingVisible.postValue(true);
38     }
39     public void hidePositionAndPadding() {
40         positionAndPaddingVisible.postValue(false);
41     }
42     public void observePositionAndPaddingVisible(LifecycleOwner activity, Observer<Boolean> observer) {
43         positionAndPaddingVisible.observe(activity, observer);
44     }
45     void setOnCurrencySelectedListener(OnCurrencySelectedListener listener) {
46         selectionListener = listener;
47     }
48     void resetOnCurrencySelectedListener() {
49         selectionListener = null;
50     }
51     void triggerOnCurrencySelectedListener(Currency c) {
52         if (selectionListener != null)
53             selectionListener.onCurrencySelected(c);
54     }
55 }