properly refetch all launchers after deleting one

app/src/main/kotlin/com/simplemobiletools/applauncher/LauncherAdapterUpdateListener.kt

@@ -0,0 +1,7 @@
+package com.simplemobiletools.applauncher
+
+interface LauncherAdapterUpdateListener {
+    fun refreshItems()
+
+    fun refetchItems()
+}

app/src/main/kotlin/com/simplemobiletools/applauncher/activities/MainActivity.kt

@@ -4,6 +4,7 @@ import android.content.Intent
 import android.os.Bundle
 import androidx.coordinatorlayout.widget.CoordinatorLayout
 import com.simplemobiletools.applauncher.BuildConfig
+import com.simplemobiletools.applauncher.LauncherAdapterUpdateListener
 import com.simplemobiletools.applauncher.R
 import com.simplemobiletools.applauncher.adapters.LaunchersAdapter
 import com.simplemobiletools.applauncher.dialogs.AddLaunchersDialog
@@ -16,7 +17,6 @@ import com.simplemobiletools.applauncher.models.AppLauncher
 import com.simplemobiletools.commons.dialogs.RadioGroupDialog
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.ensureBackgroundThread
-import com.simplemobiletools.commons.interfaces.RefreshRecyclerViewListener
 import com.simplemobiletools.commons.models.FAQItem
 import com.simplemobiletools.commons.models.RadioItem
 import com.simplemobiletools.commons.models.Release
@@ -24,7 +24,7 @@ import com.simplemobiletools.commons.views.MyGridLayoutManager
 import com.simplemobiletools.commons.views.MyRecyclerView
 import kotlinx.android.synthetic.main.activity_main.*
 
-class MainActivity : SimpleActivity(), RefreshRecyclerViewListener {
+class MainActivity : SimpleActivity(), LauncherAdapterUpdateListener {
     private val MAX_COLUMN_COUNT = 15
 
     private var launchersIgnoringSearch = ArrayList<AppLauncher>()
@@ -275,9 +275,14 @@ class MainActivity : SimpleActivity(), RefreshRecyclerViewListener {
     }
 
     override fun refreshItems() {
+        main_menu.closeSearch()
         setupLaunchers()
     }
 
+    override fun refetchItems() {
+        launchersIgnoringSearch = dbHelper.getLaunchers()
+    }
+
     private fun checkWhatsNewDialog() {
         arrayListOf<Release>().apply {
             add(Release(7, R.string.release_7))

app/src/main/kotlin/com/simplemobiletools/applauncher/adapters/LaunchersAdapter.kt

@@ -7,6 +7,7 @@ import android.view.ViewGroup
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.RecyclerView
 import com.qtalk.recyclerviewfastscroller.RecyclerViewFastScroller
+import com.simplemobiletools.applauncher.LauncherAdapterUpdateListener
 import com.simplemobiletools.applauncher.R
 import com.simplemobiletools.applauncher.activities.SimpleActivity
 import com.simplemobiletools.applauncher.dialogs.EditDialog
@@ -20,7 +21,6 @@ import com.simplemobiletools.commons.helpers.SORT_BY_CUSTOM
 import com.simplemobiletools.commons.helpers.ensureBackgroundThread
 import com.simplemobiletools.commons.interfaces.ItemMoveCallback
 import com.simplemobiletools.commons.interfaces.ItemTouchHelperContract
-import com.simplemobiletools.commons.interfaces.RefreshRecyclerViewListener
 import com.simplemobiletools.commons.interfaces.StartReorderDragListener
 import com.simplemobiletools.commons.views.MyRecyclerView
 import kotlinx.android.synthetic.main.item_launcher_label.view.*
@@ -29,7 +29,7 @@ import java.util.*
 class LaunchersAdapter(
     activity: SimpleActivity,
     val launchers: ArrayList<AppLauncher>,
-    val listener: RefreshRecyclerViewListener,
+    val listener: LauncherAdapterUpdateListener,
     recyclerView: MyRecyclerView,
     itemClick: (Any) -> Unit
 ) : MyRecyclerViewAdapter(activity, recyclerView, itemClick), ItemTouchHelperContract, RecyclerViewFastScroller.OnPopupTextUpdate {
@@ -180,6 +180,8 @@ class LaunchersAdapter(
         removeSelectedItems(positions)
         if (launchers.isEmpty()) {
             listener.refreshItems()
+        } else {
+            listener.refetchItems()
         }
     }