From df76491e17ff98a247a428920f27680aae0d5ae4 Mon Sep 17 00:00:00 2001
From: Damyan Ivanov <dam+mobileledger@ktnx.net>
Date: Wed, 9 Jan 2019 21:03:32 +0000
Subject: [PATCH] profile list can be reordered

order is not persistent yet
---
 .../ui/activity/ProfileListActivity.java      | 33 ++++++++++++++++---
 .../mobileledger/utils/ObservableList.java    |  2 +-
 2 files changed, 30 insertions(+), 5 deletions(-)

diff --git a/app/src/main/java/net/ktnx/mobileledger/ui/activity/ProfileListActivity.java b/app/src/main/java/net/ktnx/mobileledger/ui/activity/ProfileListActivity.java
index 857e7c39..b61f567a 100644
--- a/app/src/main/java/net/ktnx/mobileledger/ui/activity/ProfileListActivity.java
+++ b/app/src/main/java/net/ktnx/mobileledger/ui/activity/ProfileListActivity.java
@@ -25,6 +25,7 @@ import android.support.design.widget.FloatingActionButton;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.RecyclerView;
 import android.support.v7.widget.Toolbar;
+import android.support.v7.widget.helper.ItemTouchHelper;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -40,6 +41,7 @@ import net.ktnx.mobileledger.ui.profiles.ProfileDetailActivity;
 import net.ktnx.mobileledger.ui.profiles.ProfileDetailFragment;
 import net.ktnx.mobileledger.utils.MLDB;
 
+import java.util.Collections;
 import java.util.List;
 import java.util.Observable;
 import java.util.Observer;
@@ -69,7 +71,7 @@ public class ProfileListActivity extends AppCompatActivity {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_profile_list);
 
-        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        Toolbar toolbar = findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
         toolbar.setTitle(getTitle());
 
@@ -77,7 +79,7 @@ public class ProfileListActivity extends AppCompatActivity {
         if (recyclerView == null) throw new AssertionError();
         setupRecyclerView(recyclerView);
 
-        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
+        FloatingActionButton fab = findViewById(R.id.fab);
         fab.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
@@ -111,7 +113,30 @@ public class ProfileListActivity extends AppCompatActivity {
     }
 
     private void setupRecyclerView(@NonNull RecyclerView recyclerView) {
-        recyclerView.setAdapter(new ProfilesRecyclerViewAdapter(this, mTwoPane));
+        final ProfilesRecyclerViewAdapter adapter = new ProfilesRecyclerViewAdapter(this, mTwoPane);
+        recyclerView.setAdapter(adapter);
+        ItemTouchHelper.Callback cb = new ItemTouchHelper.Callback() {
+            @Override
+            public int getMovementFlags(@NonNull RecyclerView recyclerView,
+                                        @NonNull RecyclerView.ViewHolder viewHolder) {
+                return makeMovementFlags(ItemTouchHelper.UP | ItemTouchHelper.DOWN, 0);
+            }
+            @Override
+            public boolean onMove(@NonNull RecyclerView recyclerView,
+                                  @NonNull RecyclerView.ViewHolder viewHolder,
+                                  @NonNull RecyclerView.ViewHolder target) {
+                Collections.swap(Data.profiles.getList(), viewHolder.getAdapterPosition(),
+                        target.getAdapterPosition());
+                adapter.notifyItemMoved(viewHolder.getAdapterPosition(),
+                        target.getAdapterPosition());
+                return true;
+            }
+            @Override
+            public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int i) {
+
+            }
+        };
+        new ItemTouchHelper(cb).attachToRecyclerView(recyclerView);
     }
 
     public static class ProfilesRecyclerViewAdapter
@@ -129,7 +154,7 @@ public class ProfileListActivity extends AppCompatActivity {
         ProfilesRecyclerViewAdapter(ProfileListActivity parent, boolean twoPane) {
             mParentActivity = parent;
             mTwoPane = twoPane;
-            Data.profiles.addObserver((o, arg) ->{
+            Data.profiles.addObserver((o, arg) -> {
                 Log.d("profiles", "profile list changed");
                 notifyDataSetChanged();
             });
diff --git a/app/src/main/java/net/ktnx/mobileledger/utils/ObservableList.java b/app/src/main/java/net/ktnx/mobileledger/utils/ObservableList.java
index 9893c5d1..6d40d858 100644
--- a/app/src/main/java/net/ktnx/mobileledger/utils/ObservableList.java
+++ b/app/src/main/java/net/ktnx/mobileledger/utils/ObservableList.java
@@ -171,7 +171,7 @@ public class ObservableList<T> extends Observable {
         list = aList;
         forceNotify();
     }
-    public Iterable<? extends T> getList() {
+    public List<T> getList() {
         return list;
     }
 }
\ No newline at end of file
-- 
2.39.2