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[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / ui / MobileLedgerListFragment.java
1 /*
2  * Copyright © 2021 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.MotionEvent;
21
22 import androidx.annotation.NonNull;
23 import androidx.fragment.app.Fragment;
24 import androidx.recyclerview.widget.RecyclerView;
25 import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
26
27 import net.ktnx.mobileledger.ui.activity.MainActivity;
28 import net.ktnx.mobileledger.ui.transaction_list.TransactionListAdapter;
29 import net.ktnx.mobileledger.utils.Colors;
30 import net.ktnx.mobileledger.utils.DimensionUtils;
31
32 public class MobileLedgerListFragment extends Fragment {
33     public SwipeRefreshLayout refreshLayout;
34     public TransactionListAdapter modelAdapter;
35     protected RecyclerView root;
36     @NonNull
37     public MainActivity getMainActivity() {
38         return (MainActivity) requireActivity();
39     }
40     protected void themeChanged(Integer counter) {
41         refreshLayout.setColorSchemeColors(Colors.getSwipeCircleColors());
42     }
43     public void onBackgroundTaskRunningChanged(Boolean isRunning) {
44         if (getActivity() == null)
45             return;
46         if (refreshLayout == null)
47             return;
48         refreshLayout.setRefreshing(isRunning);
49     }
50     protected void manageFabOnScroll() {
51         final MainActivity mainActivity = getMainActivity();
52         int triggerPixels = DimensionUtils.dp2px(mainActivity, 10f);
53         root.addOnItemTouchListener(new RecyclerView.OnItemTouchListener() {
54             private float upAnchor = -1;
55             private float lastY;
56             @Override
57             public boolean onInterceptTouchEvent(@NonNull RecyclerView rv, @NonNull MotionEvent e) {
58                 switch (e.getActionMasked()) {
59                     case MotionEvent.ACTION_DOWN:
60                         lastY = upAnchor = e.getAxisValue(MotionEvent.AXIS_Y);
61                         break;
62                     case MotionEvent.ACTION_MOVE:
63                         final float currentY = e.getAxisValue(MotionEvent.AXIS_Y);
64                         if (currentY > lastY) {
65                             // swipe down
66                             upAnchor = lastY;
67
68                             mainActivity.fabShouldShow();
69                         }
70                         else {
71                             // swipe up
72                             if (currentY < upAnchor - triggerPixels)
73                                 mainActivity.fabHide();
74                         }
75
76                         lastY = currentY;
77
78                         break;
79                 }
80                 return false;
81             }
82             @Override
83             public void onTouchEvent(@NonNull RecyclerView rv, @NonNull MotionEvent e) {
84             }
85             @Override
86             public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
87             }
88         });
89     }
90 }