For #13157: Filter out folder being edited from 'select folder' dialog

app/src/main/java/org/mozilla/fenix/library/bookmarks/edit/EditBookmarkFragment.kt

@@ -107,7 +107,12 @@ class EditBookmarkFragment : Fragment(R.layout.fragment_edit_bookmark) {
                         R.id.bookmarkEditFragment,
                         EditBookmarkFragmentDirections
                             .actionBookmarkEditFragmentToBookmarkSelectFolderFragment(
-                                allowCreatingNewFolder = false
+                                allowCreatingNewFolder = false,
+                                // Don't allow moving folders into themselves.
+                                hideFolderGuid = when (bookmarkNode!!.type) {
+                                    BookmarkNodeType.FOLDER -> bookmarkNode!!.guid
+                                    else -> null
+                                }
                             )
                     )
                 }

app/src/main/java/org/mozilla/fenix/library/bookmarks/selectfolder/SelectBookmarkFolderAdapter.kt

@@ -24,12 +24,19 @@ import org.mozilla.fenix.library.bookmarks.selectfolder.SelectBookmarkFolderAdap
 class SelectBookmarkFolderAdapter(private val sharedViewModel: BookmarksSharedViewModel) :
     ListAdapter<BookmarkNodeWithDepth, BookmarkFolderViewHolder>(DiffCallback) {
 
-    fun updateData(tree: BookmarkNode?) {
+    fun updateData(tree: BookmarkNode?, hideFolderGuid: String?) {
         val updatedData = tree
             ?.convertToFolderDepthTree()
             ?.drop(1)
             .orEmpty()
-        submitList(updatedData)
+
+        val filteredData = if (hideFolderGuid != null && updatedData.isNotEmpty()) {
+            updatedData.filter { it.node.guid != hideFolderGuid }
+        } else {
+            updatedData
+        }
+
+        submitList(filteredData)
     }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BookmarkFolderViewHolder {

app/src/main/java/org/mozilla/fenix/library/bookmarks/selectfolder/SelectBookmarkFolderFragment.kt

@@ -50,6 +50,8 @@ class SelectBookmarkFolderFragment : Fragment() {
         super.onResume()
         showToolbar(getString(R.string.bookmark_select_folder_fragment_label))
 
+        val args: SelectBookmarkFolderFragmentArgs by navArgs()
+
         viewLifecycleOwner.lifecycleScope.launch(Main) {
             bookmarkNode = withContext(IO) {
                 val context = requireContext()
@@ -59,7 +61,7 @@ class SelectBookmarkFolderFragment : Fragment() {
             }
             val adapter = SelectBookmarkFolderAdapter(sharedViewModel)
             recylerViewBookmarkFolders.adapter = adapter
-            adapter.updateData(bookmarkNode)
+            adapter.updateData(bookmarkNode, args.hideFolderGuid)
         }
     }
 

app/src/main/res/navigation/nav_graph.xml

@@ -308,6 +308,11 @@
             android:name="allowCreatingNewFolder"
             android:defaultValue="false"
             app:argType="boolean" />
+        <argument
+            android:name="hideFolderGuid"
+            android:defaultValue="@null"
+            app:nullable="true"
+            app:argType="string" />
     </fragment>
 
     <fragment