Enables/disables popup menu according to the tag selection

app/src/main/java/com/paktalin/vocabularynotebook/ui/activities/MainActivity.kt

@@ -9,6 +9,7 @@ import android.view.WindowManager
 import android.view.inputmethod.InputMethodManager
 import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.widget.SearchView
+import androidx.recyclerview.selection.Selection
 import com.paktalin.vocabularynotebook.R
 import com.paktalin.vocabularynotebook.ui.recycler_view.VocabularyAdapter
 import com.paktalin.vocabularynotebook.ui.recycler_view.selection_tracker.MySelectionTracker
@@ -120,17 +121,18 @@ class MainActivity : AppCompatActivity() {
     private fun setUpSelectionTracker() {
         vocabularyAdapter.selectionTracker = MySelectionTracker().apply {
             init(recyclerView)
-            addObserver { selection ->
-                run {
-                    if (!selection.isEmpty) {
-                        // TODO disable popup menu
-                        Log.d(TAG, "selection ${selection.toList()}")
-                        visible(tagLayout)
-                    } else {
-                        gone(tagLayout)
-                    }
-                }
-            }
+            addObserver { selection -> whenSelectionChanges(selection) }
+        }
+    }
+
+    private fun whenSelectionChanges(selection: Selection<Long>) {
+        if (!selection.isEmpty) {
+            vocabularyAdapter.showPopupMenu = false
+            Log.d(TAG, "selection ${selection.toList()}")
+            visible(tagLayout)
+        } else {
+            vocabularyAdapter.showPopupMenu = true
+            gone(tagLayout)
         }
     }
 

app/src/main/java/com/paktalin/vocabularynotebook/ui/recycler_view/VocabularyAdapter.kt

@@ -24,6 +24,7 @@ class VocabularyAdapter(private val vocabulary: VocabSet, private val mainActivi
     private lateinit var recyclerView: RecyclerView
     private lateinit var viewHolder: ViewHolder
     lateinit var selectionTracker: MySelectionTracker
+    var showPopupMenu = true
 
     init {
         setHasStableIds(true)
@@ -62,20 +63,22 @@ class VocabularyAdapter(private val vocabulary: VocabSet, private val mainActivi
     }
 
     private fun showPopupMenu(v: View, position: Int) {
-        val popup = PopupMenu(mainActivity, v)
-        popup.menuInflater.inflate(R.menu.word_item_menu, popup.menu)
-        popup.setOnMenuItemClickListener {
-            if (it.itemId == R.id.option_delete) {
-                deleteWord(vocabulary.displayedAt(position), position)
+        if (showPopupMenu) {
+            val popup = PopupMenu(mainActivity, v)
+            popup.menuInflater.inflate(R.menu.word_item_menu, popup.menu)
+            popup.setOnMenuItemClickListener {
+                if (it.itemId == R.id.option_delete) {
+                    deleteWord(vocabulary.displayedAt(position), position)
+                }
+                if (it.itemId == R.id.option_edit) {
+                    startEditFragment(v, vocabulary.displayedAt(position))
+                }
+                true
             }
-            if (it.itemId == R.id.option_edit) {
-                startEditFragment(v, vocabulary.displayedAt(position))
-            }
-            true
+            // if not edit mode, then start EditFragment
+            if (mainActivity.supportFragmentManager.findFragmentByTag("edit_fragment") == null)
+                popup.show()
         }
-        // if not edit mode, then start EditFragment
-        if (mainActivity.supportFragmentManager.findFragmentByTag("edit_fragment") == null)
-            popup.show()
     }
 
     fun refresh() {}