allow toggling filename visibility in the grid view

app/src/main/kotlin/com/simplemobiletools/filemanager/pro/activities/MainActivity.kt

@@ -112,7 +112,7 @@ class MainActivity : SimpleActivity() {
             R.id.sort -> showSortingDialog()
             R.id.add_favorite -> addFavorite()
             R.id.remove_favorite -> removeFavorite()
-            R.id.toggle_filename -> toggleFilenameVisibility()
+            R.id.toggle_filename -> fragment.toggleFilenameVisibility()
             R.id.set_as_home -> setAsHome()
             R.id.change_view_type -> changeViewType()
             R.id.temporarily_show_hidden -> tryToggleTemporarilyShowHidden()
@@ -269,10 +269,6 @@ class MainActivity : SimpleActivity() {
         config.removeFavorite(fragment.currentPath)
     }
 
-    private fun toggleFilenameVisibility() {
-
-    }
-
     private fun goToFavorite() {
         val favorites = config.favorites
         val items = ArrayList<RadioItem>(favorites.size)

app/src/main/kotlin/com/simplemobiletools/filemanager/pro/adapters/ItemsAdapter.kt

@@ -75,6 +75,7 @@ class ItemsAdapter(activity: SimpleActivity, var listItems: MutableList<ListItem
     private val config = activity.config
     private val viewType = config.getFolderViewType(listItems.firstOrNull { !it.isSectionTitle }?.mPath?.getParentPath() ?: "")
     private val isListViewType = viewType == VIEW_TYPE_LIST
+    private var displayFilenamesInGrid = config.displayFilenames
 
     init {
         setupDragListener(true)
@@ -708,6 +709,11 @@ class ItemsAdapter(activity: SimpleActivity, var listItems: MutableList<ListItem
         notifyDataSetChanged()
     }
 
+    fun updateDisplayFilenamesInGrid() {
+        displayFilenamesInGrid = activity.config.displayFilenames
+        notifyDataSetChanged()
+    }
+
     fun isASectionTitle(position: Int) = listItems.getOrNull(position)?.isSectionTitle ?: false
 
     override fun onViewRecycled(holder: ViewHolder) {
@@ -747,6 +753,12 @@ class ItemsAdapter(activity: SimpleActivity, var listItems: MutableList<ListItem
                     item_check?.background?.applyColorFilter(primaryColor)
                 }
 
+                if (!isListViewType && !listItem.isDirectory) {
+                    item_name.beVisibleIf(displayFilenamesInGrid)
+                } else {
+                    item_name.beVisible()
+                }
+
                 if (listItem.isDirectory) {
                     item_icon.setImageDrawable(folderDrawable)
                     item_details?.text = getChildrenCnt(listItem)

app/src/main/kotlin/com/simplemobiletools/filemanager/pro/fragments/ItemsFragment.kt

@@ -529,6 +529,11 @@ class ItemsFragment : Fragment(), ItemOperationsListener, Breadcrumbs.Breadcrumb
         calculateContentHeight(storedItems)
     }
 
+    fun toggleFilenameVisibility() {
+        context?.config?.displayFilenames = !context!!.config.displayFilenames
+        getRecyclerAdapter()?.updateDisplayFilenamesInGrid()
+    }
+
     override fun breadcrumbClicked(id: Int) {
         if (id == 0) {
             StoragePickerDialog(activity as SimpleActivity, currentPath, context!!.config.enableRootAccess, true) {

app/src/main/kotlin/com/simplemobiletools/filemanager/pro/helpers/Config.kt

@@ -109,4 +109,8 @@ class Config(context: Context) : BaseConfig(context) {
         val isPortrait = context.resources.configuration.orientation == Configuration.ORIENTATION_PORTRAIT
         return if (isPortrait) 3 else 5
     }
+
+    var displayFilenames: Boolean
+        get() = prefs.getBoolean(DISPLAY_FILE_NAMES, true)
+        set(displayFilenames) = prefs.edit().putBoolean(DISPLAY_FILE_NAMES, displayFilenames).apply()
 }

app/src/main/kotlin/com/simplemobiletools/filemanager/pro/helpers/Constants.kt

@@ -14,6 +14,7 @@ const val VIEW_TYPE = "view_type"
 const val VIEW_TYPE_PREFIX = "view_type_folder_"
 const val FILE_COLUMN_CNT = "file_column_cnt"
 const val FILE_LANDSCAPE_COLUMN_CNT = "file_landscape_column_cnt"
+const val DISPLAY_FILE_NAMES = "display_file_names"
 
 // open as
 const val OPEN_AS_DEFAULT = 0