From b9259ce6ca90f9e4a002f888b8eed3d728cd24a5 Mon Sep 17 00:00:00 2001
From: Shaun Walker <shaun.walker@siliqon.com>
Date: Thu, 16 Sep 2021 07:59:36 -0400
Subject: [PATCH] added optional event callback delegates to FileManager
 component to allow calling components to be notified on upload, change, or
 delete

---
 .../Modules/Controls/FileManager.razor        | 20 +++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/Oqtane.Client/Modules/Controls/FileManager.razor b/Oqtane.Client/Modules/Controls/FileManager.razor
index d454a0de..c8c5e82a 100644
--- a/Oqtane.Client/Modules/Controls/FileManager.razor
+++ b/Oqtane.Client/Modules/Controls/FileManager.razor
@@ -96,7 +96,7 @@
     public string Id { get; set; } // optional - for setting the id of the FileManager component for accessibility
 
     [Parameter]
-    public string Folder { get; set; } // optional - for setting a specific folder by default
+    public string Folder { get; set; } // optional - for setting a specific folder by default ( only relevant for host functions )
 
     [Parameter]
     public int FolderId { get; set; } = -1; // optional - for setting a specific folderid by default
@@ -114,7 +114,7 @@
     public bool ShowImage { get; set; } = true; // optional - for indicating whether an image thumbnail should be displayed - default is true
 
     [Parameter]
-    public int FileId { get; set; } = -1; // optional - for setting a specific file by default
+    public int FileId { get; set; } = -1; // optional - for selecting a specific file by default
 
     [Parameter]
     public string Filter { get; set; } // optional - comma delimited list of file types that can be selected or uploaded ie. "jpg,gif"
@@ -122,6 +122,15 @@
     [Parameter]
     public bool UploadMultiple { get; set; } = false; // optional - enable multiple file uploads - default false
 
+    [Parameter]
+    public EventCallback<int> OnUpload { get; set; } // optional - executes a method in the calling component when a file is uploaded
+
+    [Parameter]
+    public EventCallback<int> OnChange { get; set; } // optional - executes a method in the calling component when a file is selected
+
+    [Parameter]
+    public EventCallback<int> OnDelete { get; set; } // optional - executes a method in the calling component when a file is deleted
+
     protected override async Task OnInitializedAsync()
     {
         if (!string.IsNullOrEmpty(Id))
@@ -228,6 +237,7 @@
     {
         _message = string.Empty;
         FileId = int.Parse((string)e.Value);
+        await OnChange.InvokeAsync(FileId);
 
         await SetImage();
         StateHasChanged();
@@ -291,8 +301,13 @@
                         {
                             FileId = file.FileId;
                             await SetImage();
+                            await OnUpload.InvokeAsync(FileId);
                         }
                     }
+                    else
+                    {
+                        await OnUpload.InvokeAsync(-1);
+                    }
                     StateHasChanged();
                 }
                 else
@@ -325,6 +340,7 @@
         {
             await FileService.DeleteFileAsync(FileId);
             await logger.LogInformation("File Deleted {File}", FileId);
+            await OnDelete.InvokeAsync(FileId);
 
             _message = Localizer["Success.File.Delete"];
             _messagetype = MessageType.Success;