The dialog for file attachments will only open once.

app/MindWork AI Studio/Chat/ContentBlockComponent.razor

@@ -21,6 +21,7 @@
                 <MudTooltip Text="@T("Number of attachments")" Placement="Placement.Bottom">
                     <MudBadge Content="@this.Content.FileAttachments.Count" Color="Color.Primary" Overlap="true" BadgeClass="sources-card-header">
                         <MudIconButton Icon="@Icons.Material.Filled.AttachFile"
+                                       Disabled="@this.isOpeningAttachmentsDialog"
                                        OnClick="@this.OpenAttachmentsDialog"/>
                     </MudBadge>
                 </MudTooltip>

app/MindWork AI Studio/Chat/ContentBlockComponent.razor.cs

@@ -102,6 +102,7 @@ public partial class ContentBlockComponent : MSGComponentBase, IAsyncDisposable
     private ElementReference mathContentContainer;
     private string lastMathRenderSignature = string.Empty;
     private bool hasActiveMathContainer;
+    private bool isOpeningAttachmentsDialog;
     private bool isDisposed;
 
     #region Overrides of ComponentBase
@@ -599,10 +600,22 @@ public partial class ContentBlockComponent : MSGComponentBase, IAsyncDisposable
     }
     
     private async Task OpenAttachmentsDialog()
+    {
+        if (this.isOpeningAttachmentsDialog)
+            return;
+
+        this.isOpeningAttachmentsDialog = true;
+
+        try
         {
             var result = await ReviewAttachmentsDialog.OpenDialogAsync(this.DialogService, this.Content.FileAttachments.ToHashSet());
             this.Content.FileAttachments = result.ToList();
         }
+        finally
+        {
+            this.isOpeningAttachmentsDialog = false;
+        }
+    }
 
     public async ValueTask DisposeAsync()
     {

app/MindWork AI Studio/Components/AttachDocuments.razor

@@ -19,6 +19,7 @@
                                   Typo="Typo.body2"
                                   Variant="Variant.Outlined"
                                   ReadOnly="true"
+                                  Disabled="@(this.isOpeningFileDialog || this.isOpeningAttachmentsDialog)"
                     />
                 </MudLink>
             </MudBadge>
@@ -35,6 +36,7 @@
                     <MudIconButton
                         Icon="@Icons.Material.Filled.AttachFile"
                         Color="Color.Default"
+                        Disabled="@(this.isOpeningFileDialog || this.isOpeningAttachmentsDialog)"
                         OnClick="@this.AddFilesManually"/>
                 </MudBadge>
             </MudTooltip>
@@ -45,6 +47,7 @@
                 <MudIconButton
                     Icon="@Icons.Material.Filled.AttachFile"
                     Color="Color.Default"
+                    Disabled="@(this.isOpeningFileDialog || this.isOpeningAttachmentsDialog)"
                     OnClick="@this.AddFilesManually"/>
             </MudTooltip>
         }
@@ -60,6 +63,7 @@ else
             Variant="Variant.Filled"
             StartIcon="@Icons.Material.Filled.Add"
             Color="Color.Primary"
+            Disabled="@(this.isOpeningFileDialog || this.isOpeningAttachmentsDialog)"
             OnClick="@(() => this.AddFilesManually())"
             Style="vertical-align: top; margin-top: -2px;"
             Size="Size.Small">

app/MindWork AI Studio/Components/AttachDocuments.razor.cs

@@ -78,6 +78,8 @@ public partial class AttachDocuments : MSGComponentBase
     private uint numDropAreasAboveThis;
     private bool isComponentHovered;
     private bool isDraggingOver;
+    private bool isOpeningFileDialog;
+    private bool isOpeningAttachmentsDialog;
     
     #region Overrides of MSGComponentBase
 
@@ -201,6 +203,13 @@ public partial class AttachDocuments : MSGComponentBase
     private string dragClass = DEFAULT_DRAG_CLASS;
     
     private async Task AddFilesManually()
+    {
+        if (this.isOpeningFileDialog)
+            return;
+
+        this.isOpeningFileDialog = true;
+
+        try
         {
         // Ensure that Pandoc is installed and ready:
             var pandocState = await this.PandocAvailabilityService.EnsureAvailabilityAsync(
@@ -232,11 +241,28 @@ public partial class AttachDocuments : MSGComponentBase
             await this.DocumentPathsChanged.InvokeAsync(this.DocumentPaths);
             await this.OnChange(this.DocumentPaths);
         }
+        finally
+        {
+            this.isOpeningFileDialog = false;
+        }
+    }
     
     private async Task OpenAttachmentsDialog()
+    {
+        if (this.isOpeningAttachmentsDialog)
+            return;
+
+        this.isOpeningAttachmentsDialog = true;
+
+        try
         {
             this.DocumentPaths = await ReviewAttachmentsDialog.OpenDialogAsync(this.DialogService, this.DocumentPaths);
         }
+        finally
+        {
+            this.isOpeningAttachmentsDialog = false;
+        }
+    }
 
     private async Task ClearAllFiles()
     {

app/MindWork AI Studio/Components/ReadFileContent.razor

@@ -1,5 +1,5 @@
 @inherits MSGComponentBase
-<MudButton StartIcon="@Icons.Material.Filled.Description" OnClick="@(async () => await this.SelectFile())" Variant="Variant.Filled" Class="mb-3" Disabled="@this.Disabled">
+<MudButton StartIcon="@Icons.Material.Filled.Description" OnClick="@(async () => await this.SelectFile())" Variant="Variant.Filled" Class="mb-3" Disabled="@(this.Disabled || this.isSelectingFile)">
     @if (string.IsNullOrWhiteSpace(this.Text))
     {
         @T("Use file content as input")        

app/MindWork AI Studio/Components/ReadFileContent.razor.cs

@@ -31,11 +31,17 @@ public partial class ReadFileContent : MSGComponentBase
     [Inject]
     private PandocAvailabilityService PandocAvailabilityService { get; init; } = null!;
 
+    private bool isSelectingFile;
+    
     private async Task SelectFile()
     {
-        if (this.Disabled)
+        if (this.Disabled || this.isSelectingFile)
             return;
 
+        this.isSelectingFile = true;
+
+        try
+        {
         // Ensure that Pandoc is installed and ready:
             var pandocState = await this.PandocAvailabilityService.EnsureAvailabilityAsync(
                 showSuccessMessage: false,
@@ -79,4 +85,9 @@ public partial class ReadFileContent : MSGComponentBase
                 await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.Error, T("Failed to load file content")));
             }
         }
+        finally
+        {
+            this.isSelectingFile = false;
+        }
+    }
 }

app/MindWork AI Studio/Components/SelectFile.razor

@@ -13,7 +13,7 @@
         Variant="Variant.Outlined"
     />
     
-    <MudButton StartIcon="@Icons.Material.Filled.FolderOpen" Variant="Variant.Outlined" Color="Color.Primary" Disabled="this.Disabled" OnClick="@this.OpenFileDialog">
+    <MudButton StartIcon="@Icons.Material.Filled.FolderOpen" Variant="Variant.Outlined" Color="Color.Primary" Disabled="@(this.Disabled || this.isOpeningFileDialog)" OnClick="@this.OpenFileDialog">
         @T("Choose File")
     </MudButton>
 </MudStack>

app/MindWork AI Studio/Components/SelectFile.razor.cs

@@ -35,6 +35,7 @@ public partial class SelectFile : MSGComponentBase
     protected ILogger<SelectFile> Logger { get; init; } = null!;
     
     private static readonly Dictionary<string, object?> SPELLCHECK_ATTRIBUTES = new();
+    private bool isOpeningFileDialog;
     
     #region Overrides of ComponentBase
 
@@ -54,6 +55,13 @@ public partial class SelectFile : MSGComponentBase
     }
 
     private async Task OpenFileDialog()
+    {
+        if (this.Disabled || this.isOpeningFileDialog)
+            return;
+
+        this.isOpeningFileDialog = true;
+
+        try
         {
             var response = await this.RustService.SelectFile(this.FileDialogTitle, this.Filter, string.IsNullOrWhiteSpace(this.File) ? null : this.File);
             this.Logger.LogInformation($"The user selected the file '{response.SelectedFilePath}'.");
@@ -61,4 +69,9 @@ public partial class SelectFile : MSGComponentBase
             if (!response.UserCancelled)
                 this.InternalFileChanged(response.SelectedFilePath);
         }
+        finally
+        {
+            this.isOpeningFileDialog = false;
+        }
+    }
 }