display the checklist items on the recycler view

app/src/main/kotlin/com/simplemobiletools/notes/pro/adapters/ChecklistAdapter.kt

@@ -0,0 +1,58 @@
+package com.simplemobiletools.notes.pro.adapters
+
+import android.view.Menu
+import android.view.View
+import android.view.ViewGroup
+import com.simplemobiletools.commons.activities.BaseSimpleActivity
+import com.simplemobiletools.commons.adapters.MyRecyclerViewAdapter
+import com.simplemobiletools.commons.interfaces.RefreshRecyclerViewListener
+import com.simplemobiletools.commons.views.MyRecyclerView
+import com.simplemobiletools.notes.pro.R
+import com.simplemobiletools.notes.pro.models.ChecklistItem
+import kotlinx.android.synthetic.main.item_checklist.view.*
+import java.util.*
+
+class ChecklistAdapter(activity: BaseSimpleActivity, var items: ArrayList<ChecklistItem>, val listener: RefreshRecyclerViewListener?,
+                       recyclerView: MyRecyclerView, itemClick: (Any) -> Unit) : MyRecyclerViewAdapter(activity, recyclerView, null, itemClick) {
+
+    init {
+        setupDragListener(true)
+    }
+
+    override fun getActionMenuId() = R.menu.cab_delete_only
+
+    override fun actionItemPressed(id: Int) {}
+
+    override fun getSelectableItemCount() = items.size
+
+    override fun getIsItemSelectable(position: Int) = true
+
+    override fun getItemSelectionKey(position: Int) = items.getOrNull(position)?.id
+
+    override fun getItemKeyPosition(key: Int) = items.indexOfFirst { it.id == key }
+
+    override fun prepareActionMode(menu: Menu) {}
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) = createViewHolder(R.layout.item_checklist, parent)
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        val item = items[position]
+        holder.bindView(item, true, true) { itemView, layoutPosition ->
+            setupView(itemView, item)
+        }
+        bindViewHolder(holder)
+    }
+
+    override fun getItemCount() = items.size
+
+    private fun setupView(view: View, checklistItem: ChecklistItem) {
+        val isSelected = selectedKeys.contains(checklistItem.id)
+        view.apply {
+            checklist_title.apply {
+                text = checklistItem.title
+                setTextColor(textColor)
+            }
+            checklist_holder.isSelected = isSelected
+        }
+    }
+}