Amend accessibility modifiers on file upload property editor components to support extension (#19643)

* Logic of getting media path moved to separate method.

* TemporaryFileUploadValidator marked as public

* Typo fix.

src/Umbraco.Infrastructure/PropertyEditors/FileUploadPropertyValueEditor.cs

@@ -189,8 +189,7 @@ internal class FileUploadPropertyValueEditor : DataValueEditor
         }
 
         // get the filepath
-        // in case we are using the old path scheme, try to re-use numbers (bah...)
-        var filepath = _mediaFileManager.GetMediaPath(file.FileName, contentKey, propertyTypeKey); // fs-relative path
+        string filepath = GetMediaPath(file, dataTypeConfiguration, contentKey, propertyTypeKey);
 
         using (Stream filestream = file.OpenReadStream())
         {
@@ -201,9 +200,19 @@ internal class FileUploadPropertyValueEditor : DataValueEditor
 
             // TODO: Here it would make sense to do the auto-fill properties stuff but the API doesn't allow us to do that right
             // since we'd need to be able to return values for other properties from these methods
-            _mediaFileManager.FileSystem.AddFile(filepath, filestream, true); // must overwrite!
+            _mediaFileManager.FileSystem.AddFile(filepath, filestream, overrideIfExists: true); // must overwrite!
         }
 
         return filepath;
     }
+
+    /// <summary>
+    /// Provides media path.
+    /// </summary>
+    /// <returns>File system relative path</returns>
+    protected virtual string GetMediaPath(TemporaryFileModel file, object? dataTypeConfiguration, Guid contentKey, Guid propertyTypeKey)
+    {
+        // in case we are using the old path scheme, try to re-use numbers (bah...)
+        return _mediaFileManager.GetMediaPath(file.FileName, contentKey, propertyTypeKey);
+    }
 }

src/Umbraco.Infrastructure/PropertyEditors/TemporaryFileUploadValidator.cs

@@ -1,4 +1,4 @@
-using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations;
 using Umbraco.Cms.Core.Configuration.Models;
 using Umbraco.Cms.Core.Models.TemporaryFile;
 using Umbraco.Cms.Core.Models.Validation;
@@ -6,20 +6,20 @@ using Umbraco.Extensions;
 
 namespace Umbraco.Cms.Core.PropertyEditors;
 
-internal class TemporaryFileUploadValidator : IValueValidator
+public class TemporaryFileUploadValidator : IValueValidator
 {
     private readonly GetContentSettings _getContentSettings;
     private readonly ParseTemporaryFileKey _parseTemporaryFileKey;
     private readonly GetTemporaryFileModel _getTemporaryFileModel;
     private readonly ValidateFileType? _validateFileType;
 
-    internal delegate ContentSettings GetContentSettings();
+    public delegate ContentSettings GetContentSettings();
 
-    internal delegate Guid? ParseTemporaryFileKey(object? editorValue);
+    public delegate Guid? ParseTemporaryFileKey(object? editorValue);
 
-    internal delegate TemporaryFileModel? GetTemporaryFileModel(Guid temporaryFileKey);
+    public delegate TemporaryFileModel? GetTemporaryFileModel(Guid temporaryFileKey);
 
-    internal delegate bool ValidateFileType(string extension, object? dataTypeConfiguration);
+    public delegate bool ValidateFileType(string extension, object? dataTypeConfiguration);
 
     public TemporaryFileUploadValidator(
         GetContentSettings getContentSettings,