From 96577161813cacab5e47975942324feb92166e7c Mon Sep 17 00:00:00 2001
From: Javier <dev.git@javispedro.com>
Date: Fri, 26 Mar 2021 15:45:44 +0100
Subject: Support device removal by swiping left/right

---
 .../java/com/javispedro/rempe/MainActivity.java    | 64 ++++++++++++++++------
 1 file changed, 47 insertions(+), 17 deletions(-)

(limited to 'app/src/main/java/com/javispedro/rempe/MainActivity.java')

diff --git a/app/src/main/java/com/javispedro/rempe/MainActivity.java b/app/src/main/java/com/javispedro/rempe/MainActivity.java
index 2c29bc4..e4e6d6f 100644
--- a/app/src/main/java/com/javispedro/rempe/MainActivity.java
+++ b/app/src/main/java/com/javispedro/rempe/MainActivity.java
@@ -6,11 +6,13 @@ import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.appcompat.widget.Toolbar;
 import androidx.preference.PreferenceManager;
 import androidx.recyclerview.widget.DiffUtil;
+import androidx.recyclerview.widget.ItemTouchHelper;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.ListUpdateCallback;
 import androidx.recyclerview.widget.RecyclerView;
@@ -31,16 +33,6 @@ public class MainActivity extends AppCompatActivity {
     private final static String TAG = "MainActivity";
 
     private SharedPreferences mPrefs = null;
-    private SharedPreferences.OnSharedPreferenceChangeListener mPrefsListener = new SharedPreferences.OnSharedPreferenceChangeListener() {
-        @Override
-        public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
-            switch (key) {
-                case Preferences.PREFS_DEVICES:
-                    refreshDevices();
-                    break;
-            }
-        }
-    };
 
     private final ArrayList<Integer> mDeviceNumbers = new ArrayList<Integer>();
     private final ArrayList<Device> mDevices = new ArrayList<Device>();
@@ -72,6 +64,8 @@ public class MainActivity extends AppCompatActivity {
         mDeviceListAdapter = new DeviceListRecyclerViewListAdapter();
         mList.setAdapter(mDeviceListAdapter);
 
+        new ItemTouchHelper(mItemTouchHelperCallback).attachToRecyclerView(mList);
+
         refreshDevices();
     }
 
@@ -113,9 +107,6 @@ public class MainActivity extends AppCompatActivity {
         int id = item.getItemId();
 
         switch (id) {
-            case R.id.action_remove_all:
-                removeAllDevices();
-                return true;
             case R.id.action_settings:
                 return true;
         }
@@ -132,6 +123,35 @@ public class MainActivity extends AppCompatActivity {
         mSrlList.setRefreshing(false);
     }
 
+    private final ItemTouchHelper.Callback mItemTouchHelperCallback = new ItemTouchHelper.SimpleCallback(ItemTouchHelper.UP | ItemTouchHelper.DOWN, ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT) {
+        @Override
+        public boolean onMove(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, @NonNull RecyclerView.ViewHolder target) {
+            final int from = viewHolder.getAdapterPosition();
+            final int to = viewHolder.getAdapterPosition();
+
+            Log.d(TAG, "onMove from=" + from + " to=" + to);
+
+            return false;
+        }
+
+        @Override
+        public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction) {
+            final int position = viewHolder.getAdapterPosition();
+            removeDeviceByPosition(position);
+        }
+    };
+
+    private final SharedPreferences.OnSharedPreferenceChangeListener mPrefsListener = new SharedPreferences.OnSharedPreferenceChangeListener() {
+        @Override
+        public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
+            switch (key) {
+                case Preferences.PREFS_DEVICES:
+                    refreshDevices();
+                    break;
+            }
+        }
+    };
+
     public void searchForNewDevice() {
         Log.d(TAG, "searchForNewDevice");
         if (mPccSearchHandle != null) {
@@ -141,7 +161,7 @@ public class MainActivity extends AppCompatActivity {
         mPccSearchHandle = AntPlusEnvironmentPcc.requestAccess(this, this, mResultReceiver, mDeviceStateChangeReceiver);
     }
 
-    private AntPluginPcc.IPluginAccessResultReceiver<AntPlusEnvironmentPcc> mResultReceiver = new AntPluginPcc.IPluginAccessResultReceiver<AntPlusEnvironmentPcc>() {
+    private final AntPluginPcc.IPluginAccessResultReceiver<AntPlusEnvironmentPcc> mResultReceiver = new AntPluginPcc.IPluginAccessResultReceiver<AntPlusEnvironmentPcc>() {
         @Override
         public void onResultReceived(AntPlusEnvironmentPcc result, RequestAccessResult resultCode, DeviceState initialDeviceState) {
             Log.d(TAG, "onResultReceived resultCode=" + resultCode);
@@ -161,7 +181,7 @@ public class MainActivity extends AppCompatActivity {
         }
     };
 
-    private AntPluginPcc.IDeviceStateChangeReceiver mDeviceStateChangeReceiver = new AntPluginPcc.IDeviceStateChangeReceiver() {
+    private final AntPluginPcc.IDeviceStateChangeReceiver mDeviceStateChangeReceiver = new AntPluginPcc.IDeviceStateChangeReceiver() {
         @Override
         public void onDeviceStateChange(DeviceState newDeviceState) {
             Log.d(TAG, "onDeviceStateChange newDeviceState=" + newDeviceState);
@@ -180,8 +200,18 @@ public class MainActivity extends AppCompatActivity {
         Preferences.saveDeviceNumbers(mPrefs, list);
     }
 
-    public void removeAllDevices() {
-        List<Integer> list = new ArrayList<Integer>();
+    public void removeDeviceByPosition(int position) {
+        Log.d(TAG, "removeDeviceByPosition position=" + position);
+        List<Integer> list = Preferences.getDeviceNumbers(mPrefs);
+        try {
+            list.remove(position);
+        } catch (IndexOutOfBoundsException ex) {
+            Log.w(TAG, ex);
+        }
+
+        Snackbar.make(mList,
+                getString(R.string.remove_device_done), Snackbar.LENGTH_SHORT).show();
+
         Preferences.saveDeviceNumbers(mPrefs, list);
     }
 
-- 
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