Fixed an issue with switching between chat threads while multiple chats are running (#779)

app/MindWork AI Studio/Components/ChatComponent.razor

@@ -37,7 +37,7 @@
             <MudTextField
                 T="string"
                 @ref="@this.inputField"
-                @bind-Text="@this.userInput"
+                @bind-Text="@this.UserInput"
                 Variant="Variant.Outlined"
                 AutoGrow="@true"
                 Lines="3"
@@ -96,28 +96,28 @@
             @if (this.SettingsManager.ConfigurationData.Workspace.StorageBehavior is not WorkspaceStorageBehavior.DISABLE_WORKSPACES)
             {
                 <MudTooltip Text="@T("Move the chat to a workspace, or to another if it is already in one.")" Placement="@TOOLBAR_TOOLTIP_PLACEMENT">
-                    <MudIconButton Icon="@Icons.Material.Filled.MoveToInbox" Disabled="@(!this.CanThreadBeSaved || this.IsCurrentChatStreaming)" OnClick="@(() => this.MoveChatToWorkspace())"/>
+                    <MudIconButton Icon="@Icons.Material.Filled.MoveToInbox" Disabled="@(!this.CanThreadBeSaved || this.IsCurrentChatStreaming)" OnClick="@this.MoveChatToWorkspace"/>
                 </MudTooltip>
             }
             
-            <AttachDocuments Name="File Attachments" Layer="@DropLayers.PAGES" @bind-DocumentPaths="@this.chatDocumentPaths" CatchAllDocuments="true" UseSmallForm="true" Provider="@this.Provider"/>
+            <AttachDocuments Name="File Attachments" Layer="@DropLayers.PAGES" DocumentPaths="@this.ComposerState.FileAttachments" DocumentPathsChanged="@this.ComposerAttachmentsChanged" CatchAllDocuments="true" UseSmallForm="true" Provider="@this.Provider"/>
             
             <MudDivider Vertical="true" Style="height: 24px; align-self: center;"/>
             
             <MudTooltip Text="@T("Bold")" Placement="@TOOLBAR_TOOLTIP_PLACEMENT">
-                <MudIconButton Icon="@Icons.Material.Filled.FormatBold" OnClick="() => this.ApplyMarkdownFormat(MARKDOWN_BOLD)" Disabled="@this.IsInputForbidden()"/>
+                <MudIconButton Icon="@Icons.Material.Filled.FormatBold" OnClick="@(() => this.ApplyMarkdownFormat(MARKDOWN_BOLD))" Disabled="@this.IsInputForbidden()"/>
             </MudTooltip>
             <MudTooltip Text="@T("Italic")" Placement="@TOOLBAR_TOOLTIP_PLACEMENT">
-                <MudIconButton Icon="@Icons.Material.Filled.FormatItalic" OnClick="() => this.ApplyMarkdownFormat(MARKDOWN_ITALIC)" Disabled="@this.IsInputForbidden()"/>
+                <MudIconButton Icon="@Icons.Material.Filled.FormatItalic" OnClick="@(() => this.ApplyMarkdownFormat(MARKDOWN_ITALIC))" Disabled="@this.IsInputForbidden()"/>
             </MudTooltip>
             <MudTooltip Text="@T("Heading")" Placement="@TOOLBAR_TOOLTIP_PLACEMENT">
-                <MudIconButton Icon="@Icons.Material.Filled.TextFields" OnClick="() => this.ApplyMarkdownFormat(MARKDOWN_HEADING)" Disabled="@this.IsInputForbidden()"/>
+                <MudIconButton Icon="@Icons.Material.Filled.TextFields" OnClick="@(() => this.ApplyMarkdownFormat(MARKDOWN_HEADING))" Disabled="@this.IsInputForbidden()"/>
             </MudTooltip>
             <MudTooltip Text="@T("Bulleted List")" Placement="@TOOLBAR_TOOLTIP_PLACEMENT">
-                <MudIconButton Icon="@Icons.Material.Filled.FormatListBulleted" OnClick="() => this.ApplyMarkdownFormat(MARKDOWN_BULLET_LIST)" Disabled="@this.IsInputForbidden()"/>
+                <MudIconButton Icon="@Icons.Material.Filled.FormatListBulleted" OnClick="@(() => this.ApplyMarkdownFormat(MARKDOWN_BULLET_LIST))" Disabled="@this.IsInputForbidden()"/>
             </MudTooltip>
             <MudTooltip Text="@T("Code")" Placement="@TOOLBAR_TOOLTIP_PLACEMENT">
-                <MudIconButton Icon="@Icons.Material.Filled.Code" OnClick="() => this.ApplyMarkdownFormat(MARKDOWN_CODE)" Disabled="@this.IsInputForbidden()"/>
+                <MudIconButton Icon="@Icons.Material.Filled.Code" OnClick="@(() => this.ApplyMarkdownFormat(MARKDOWN_CODE))" Disabled="@this.IsInputForbidden()"/>
             </MudTooltip>
             
             <MudDivider Vertical="true" Style="height: 24px; align-self: center;"/>
@@ -137,7 +137,7 @@
             @if (this.IsCurrentChatStreaming)
             {
                 <MudTooltip Text="@T("Stop generation")" Placement="@TOOLBAR_TOOLTIP_PLACEMENT">
-                    <MudIconButton Icon="@Icons.Material.Filled.Stop" Color="Color.Error" OnClick="@(() => this.CancelStreaming())"/>
+                    <MudIconButton Icon="@Icons.Material.Filled.Stop" Color="Color.Error" OnClick="@this.CancelStreaming"/>
                 </MudTooltip>
             }
 

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

@@ -39,6 +39,9 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
     [Parameter]
     public Workspaces? Workspaces { get; set; }
 
+    [Parameter]
+    public ChatComposerState ComposerState { get; set; } = new();
+    
     [Inject]
     private ILogger<ChatComponent> Logger { get; set; } = null!;
 
@@ -62,7 +65,6 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
     private bool mustScrollToBottomAfterRender;
     private InnerScrolling scrollingArea = null!;
     private byte scrollRenderCountdown;
-    private string userInput = string.Empty;
     private bool mustStoreChat;
     private bool mustLoadChat;
     private LoadChat loadChat;
@@ -70,20 +72,36 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
     private string currentWorkspaceName = string.Empty;
     private Guid currentWorkspaceId = Guid.Empty;
     private Guid currentChatThreadId = Guid.Empty;
+    private Guid loadedParameterChatId = Guid.Empty;
+    private Guid loadedParameterWorkspaceId = Guid.Empty;
     private Guid foregroundChatId = Guid.Empty;
     private int workspaceHeaderSyncVersion;
-    private HashSet<FileAttachment> chatDocumentPaths = [];
 
     // Unfortunately, we need the input field reference to blur the focus away. Without
     // this, we cannot clear the input field.
     private MudTextField<string> inputField = null!;
 
+    /// <summary>
+    /// Represents the user's input in the chat interface.
+    /// </summary>
+    /// <remarks>
+    /// This property serves as a bridge between the chat component and the
+    /// underlying composer state, allowing user input to be dynamically updated
+    /// and managed. The setter also triggers state changes within the composer
+    /// to track whether the user has drafted any input.
+    /// </remarks>
+    private string UserInput
+    {
+        get => this.ComposerState.UserInput;
+        set => this.ComposerState.SetUserInput(value);
+    }
+
     #region Overrides of ComponentBase
 
     protected override async Task OnInitializedAsync()
     {
         // Apply the filters for the message bus:
-        this.ApplyFilters([], [ Event.HAS_CHAT_UNSAVED_CHANGES, Event.RESET_CHAT_STATE, Event.CHAT_STREAMING_DONE, Event.WORKSPACE_LOADED_CHAT_CHANGED, Event.AI_JOB_CHANGED, Event.AI_JOB_FINISHED, Event.CHAT_GENERATION_CHANGED ]);
+        this.ApplyFilters([], [ Event.HAS_CHAT_UNSAVED_CHANGES, Event.RESET_CHAT_STATE, Event.CHAT_STREAMING_DONE, Event.AI_JOB_CHANGED, Event.AI_JOB_FINISHED, Event.CHAT_GENERATION_CHANGED ]);
         
         // Configure the spellchecking for the user input:
         this.SettingsManager.InjectSpellchecking(USER_INPUT_ATTRIBUTES);
@@ -94,15 +112,12 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
         
         // Get the preselected chat template:
         this.currentChatTemplate = this.SettingsManager.GetPreselectedChatTemplate(Tools.Components.CHAT);
-        this.userInput = this.currentChatTemplate.PredefinedUserPrompt;
+        if (!this.ComposerState.HasUserDraft && !this.ComposerState.HasComposerContent)
+            this.ComposerState.ApplyTemplate(this.currentChatTemplate);
 
         var deferredInput = MessageBus.INSTANCE.CheckDeferredMessages<string>(Event.SEND_TO_CHAT_INPUT).FirstOrDefault();
         if (!string.IsNullOrWhiteSpace(deferredInput))
-            this.userInput = deferredInput;
-
-        // Apply template's file attachments, if any:
-        foreach (var attachment in this.currentChatTemplate.FileAttachments)
-            this.chatDocumentPaths.Add(attachment.Normalize());
+            this.ComposerState.SetUserInput(deferredInput);
 
         //
         // Check for deferred messages of the kind 'SEND_TO_CHAT',
@@ -120,6 +135,7 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
             this.ChatThread.IncludeDateTime = true;
             
             this.Logger.LogInformation($"The chat '{this.ChatThread.ChatId}' with {this.ChatThread.Blocks.Count} messages was deferred and will be rendered now.");
+            this.MarkCurrentChatAsLoadedParameter();
             await this.ChatThreadChanged.InvokeAsync(this.ChatThread);
             
             // We know already that the chat thread is not null,
@@ -246,6 +262,7 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
             
             if(this.ChatThread is not null)
             {
+                this.MarkCurrentChatAsLoadedParameter();
                 await this.ChatThreadChanged.InvokeAsync(this.ChatThread);
                 this.Logger.LogInformation($"The chat '{this.ChatThread!.ChatId}' with title '{this.ChatThread.Name}' ({this.ChatThread.Blocks.Count} messages) was loaded successfully.");
 
@@ -276,13 +293,35 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
 
     protected override async Task OnParametersSetAsync()
     {
-        await this.SyncWorkspaceHeaderWithChatThreadAsync();
+        await this.ApplyLoadedChatParameterAsync();
         await this.SyncForegroundChatAsync();
         await base.OnParametersSetAsync();
     }
 
     #endregion
 
+    private async Task ApplyLoadedChatParameterAsync()
+    {
+        var chatId = this.ChatThread?.ChatId ?? Guid.Empty;
+        var workspaceId = this.ChatThread?.WorkspaceId ?? Guid.Empty;
+
+        if (this.loadedParameterChatId == chatId && this.loadedParameterWorkspaceId == workspaceId)
+        {
+            await this.SyncWorkspaceHeaderWithChatThreadAsync();
+            return;
+        }
+
+        this.loadedParameterChatId = chatId;
+        this.loadedParameterWorkspaceId = workspaceId;
+        await this.LoadedChatChanged(notifyParent: false);
+    }
+
+    private void MarkCurrentChatAsLoadedParameter()
+    {
+        this.loadedParameterChatId = this.ChatThread?.ChatId ?? Guid.Empty;
+        this.loadedParameterWorkspaceId = this.ChatThread?.WorkspaceId ?? Guid.Empty;
+    }
+
     private async Task SyncWorkspaceHeaderWithChatThreadAsync()
     {
         var syncVersion = Interlocked.Increment(ref this.workspaceHeaderSyncVersion);
@@ -424,12 +463,10 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
     {
         this.currentChatTemplate = chatTemplate;
         if(!string.IsNullOrWhiteSpace(this.currentChatTemplate.PredefinedUserPrompt))
-            this.userInput = this.currentChatTemplate.PredefinedUserPrompt;
+            this.ComposerState.SetSystemInput(this.currentChatTemplate.PredefinedUserPrompt);
 
         // Apply template's file attachments (replaces existing):
-        this.chatDocumentPaths.Clear();
-        foreach (var attachment in this.currentChatTemplate.FileAttachments)
-            this.chatDocumentPaths.Add(attachment.Normalize());
+        this.ComposerState.ReplaceFileAttachments(this.currentChatTemplate.FileAttachments);
 
         if(this.ChatThread is null)
             return;
@@ -489,6 +526,7 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
             this.dataSourceSelectionComponent.Hide();
         
         this.hasUnsavedChanges = true;
+        this.ComposerState.MarkUserDraft();
         var key = keyEvent.Code.ToLowerInvariant();
         
         // Was the enter key (either enter or numpad enter) pressed?
@@ -520,7 +558,16 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
         if(this.dataSourceSelectionComponent?.IsVisible ?? false)
             this.dataSourceSelectionComponent.Hide();
 
-        this.userInput = await this.JsRuntime.InvokeAsync<string>("formatChatInputMarkdown", CHAT_INPUT_ID, formatType);
+        this.ComposerState.SetUserInput(await this.JsRuntime.InvokeAsync<string>("formatChatInputMarkdown", CHAT_INPUT_ID, formatType));
+        this.hasUnsavedChanges = true;
+    }
+
+    private void ComposerAttachmentsChanged(HashSet<FileAttachment> attachments)
+    {
+        if (!ReferenceEquals(this.ComposerState.FileAttachments, attachments))
+            this.ComposerState.ReplaceFileAttachments(attachments);
+
+        this.ComposerState.MarkUserDraft();
         this.hasUnsavedChanges = true;
     }
     
@@ -548,17 +595,18 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
                 WorkspaceId = this.currentWorkspaceId,
                 ChatId = Guid.NewGuid(),
                 DataSourceOptions = this.earlyDataSourceOptions,
-                Name = this.ExtractThreadName(this.userInput),
+                Name = this.ExtractThreadName(this.ComposerState.UserInput),
                 Blocks = this.currentChatTemplate == ChatTemplate.NO_CHAT_TEMPLATE ? [] : this.currentChatTemplate.ExampleConversation.Select(x => x.DeepClone()).ToList(),
             };
             
+            this.MarkCurrentChatAsLoadedParameter();
             await this.ChatThreadChanged.InvokeAsync(this.ChatThread);
         }
         else
         {
             // Set the thread name if it is empty:
             if (string.IsNullOrWhiteSpace(this.ChatThread.Name))
-                this.ChatThread.Name = this.ExtractThreadName(this.userInput);
+                this.ChatThread.Name = this.ExtractThreadName(this.ComposerState.UserInput);
             
             // Update provider, profile and chat template:
             this.ChatThread.SelectedProvider = this.Provider.Id;
@@ -575,14 +623,14 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
         IContent? lastUserPrompt;
         if (!reuseLastUserPrompt)
         {
-            var normalizedAttachments = this.chatDocumentPaths
+            var normalizedAttachments = this.ComposerState.FileAttachments
                 .Select(attachment => attachment.Normalize())
                 .Where(attachment => attachment.IsValid)
                 .ToList();
 
             lastUserPrompt = new ContentText
             {
-                Text = this.userInput,
+                Text = this.ComposerState.UserInput,
                 FileAttachments = normalizedAttachments,
             };
 
@@ -629,8 +677,7 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
         // Clear the input field:
         await this.inputField.FocusAsync();
 
-        this.userInput = string.Empty;
-        this.chatDocumentPaths.Clear();
+        this.ComposerState.Clear();
 
         await this.inputField.BlurAsync();
         
@@ -724,7 +771,7 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
         // Reset our state:
         //
         this.hasUnsavedChanges = false;
-        this.userInput = string.Empty;
+        this.ComposerState.Clear();
         
         //
         // Reset the LLM provider considering the user's settings:
@@ -781,18 +828,14 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
             };
         }
 
-        this.userInput = this.currentChatTemplate.PredefinedUserPrompt;
-
-        // Apply template's file attachments:
-        this.chatDocumentPaths.Clear();
-        foreach (var attachment in this.currentChatTemplate.FileAttachments)
-            this.chatDocumentPaths.Add(attachment.Normalize());
+        this.ComposerState.ApplyTemplate(this.currentChatTemplate);
 
         // Now, we have to reset the data source options as well:
         this.ApplyStandardDataSourceOptions();
         
         // Notify the parent component about the change:
         await this.SyncForegroundChatAsync();
+        this.MarkCurrentChatAsLoadedParameter();
         await this.ChatThreadChanged.InvokeAsync(this.ChatThread);
     }
     
@@ -834,26 +877,33 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
         await WorkspaceBehaviour.DeleteChatAsync(this.DialogService, this.ChatThread!.WorkspaceId, this.ChatThread.ChatId, askForConfirmation: false);
         
         this.ChatThread!.WorkspaceId = workspaceId;
+        this.MarkCurrentChatAsLoadedParameter();
         await this.SaveThread();
 
         await this.SyncWorkspaceHeaderWithChatThreadAsync();
     }
     
-    private async Task LoadedChatChanged()
+    private async Task LoadedChatChanged(bool notifyParent = true)
     {
         this.hasUnsavedChanges = false;
-        this.userInput = string.Empty;
+        this.ComposerState.Clear();
 
         if (this.ChatThread is not null)
         {
             this.ChatThread = this.AIJobService.TryGetLiveChatThread(this.ChatThread.ChatId) ?? this.ChatThread;
-            await this.ChatThreadChanged.InvokeAsync(this.ChatThread);
+            this.loadedParameterChatId = this.ChatThread.ChatId;
+            this.loadedParameterWorkspaceId = this.ChatThread.WorkspaceId;
+            if (notifyParent)
+                await this.ChatThreadChanged.InvokeAsync(this.ChatThread);
+
             await this.SyncWorkspaceHeaderWithChatThreadAsync();
             await this.SyncForegroundChatAsync();
             this.dataSourceSelectionComponent?.ChangeOptionWithoutSaving(this.ChatThread.DataSourceOptions, this.ChatThread.AISelectedDataSources);
         }
         else
         {
+            this.loadedParameterChatId = Guid.Empty;
+            this.loadedParameterWorkspaceId = Guid.Empty;
             this.ClearWorkspaceHeaderState();
             await this.SyncForegroundChatAsync();
             this.ApplyStandardDataSourceOptions();
@@ -872,10 +922,11 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
     private async Task ResetState()
     {
         this.hasUnsavedChanges = false;
-        this.userInput = string.Empty;
+        this.ComposerState.Clear();
         this.ClearWorkspaceHeaderState();
         
         this.ChatThread = null;
+        this.MarkCurrentChatAsLoadedParameter();
         await this.SyncForegroundChatAsync();
         this.ApplyStandardDataSourceOptions();
         await this.ChatThreadChanged.InvokeAsync(this.ChatThread);
@@ -974,11 +1025,7 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
 
     private void RestoreComposerFromTextBlock(ContentText textBlock)
     {
-        this.userInput = textBlock.Text;
-        this.chatDocumentPaths.Clear();
-
-        foreach (var attachment in textBlock.FileAttachments)
-            this.chatDocumentPaths.Add(attachment.Normalize());
+        this.ComposerState.RestoreFromTextBlock(textBlock);
     }
     
     #region Overrides of MSGComponentBase
@@ -1000,10 +1047,6 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
                     await this.SaveThread();
                 break;
             
-            case Event.WORKSPACE_LOADED_CHAT_CHANGED:
-                await this.LoadedChatChanged();
-                break;
-
             case Event.AI_JOB_CHANGED:
             case Event.AI_JOB_FINISHED:
             case Event.CHAT_GENERATION_CHANGED:
@@ -1030,7 +1073,7 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
                 if (this.IsCurrentChatStreaming)
                     return Task.FromResult((TResult?) (object) false);
                 
-                return Task.FromResult((TResult?)(object)this.hasUnsavedChanges);
+                return Task.FromResult((TResult?)(object)(this.hasUnsavedChanges || this.ComposerState.HasVisibleUserDraft));
         }
         
         return Task.FromResult(default(TResult));
@@ -1049,6 +1092,7 @@ public partial class ChatComponent : MSGComponentBase, IAsyncDisposable
         }
 
         await this.AIJobService.SetForegroundAsync(AIJobKind.CHAT_GENERATION, this.foregroundChatId, false);
+        this.Dispose();
     }
 
     #endregion

app/MindWork AI Studio/Components/ChatComposerState.cs

@@ -0,0 +1,65 @@
+using AIStudio.Chat;
+using AIStudio.Settings;
+
+namespace AIStudio.Components;
+
+public sealed class ChatComposerState
+{
+    public string UserInput { get; private set; } = string.Empty;
+
+    public HashSet<FileAttachment> FileAttachments { get; } = [];
+
+    public bool HasUserDraft { get; private set; }
+
+    public bool HasComposerContent => !string.IsNullOrWhiteSpace(this.UserInput) || this.FileAttachments.Count > 0;
+
+    public bool HasVisibleUserDraft => this.HasUserDraft && (!string.IsNullOrWhiteSpace(this.UserInput) || this.FileAttachments.Count > 0);
+
+    public void ApplyTemplate(ChatTemplate chatTemplate)
+    {
+        this.UserInput = chatTemplate.PredefinedUserPrompt;
+        this.FileAttachments.Clear();
+        foreach (var attachment in chatTemplate.FileAttachments)
+            this.FileAttachments.Add(attachment.Normalize());
+
+        this.HasUserDraft = false;
+    }
+
+    public void SetUserInput(string? userInput)
+    {
+        this.UserInput = userInput ?? string.Empty;
+        this.HasUserDraft = !string.IsNullOrWhiteSpace(userInput);
+    }
+
+    public void SetSystemInput(string? userInput)
+    {
+        this.UserInput = userInput ?? string.Empty;
+        this.HasUserDraft = false;
+    }
+
+    public void MarkUserDraft()
+    {
+        this.HasUserDraft = true;
+    }
+
+    public void ReplaceFileAttachments(IEnumerable<FileAttachment> fileAttachments)
+    {
+        this.FileAttachments.Clear();
+        foreach (var attachment in fileAttachments)
+            this.FileAttachments.Add(attachment.Normalize());
+    }
+
+    public void Clear()
+    {
+        this.UserInput = string.Empty;
+        this.FileAttachments.Clear();
+        this.HasUserDraft = false;
+    }
+
+    public void RestoreFromTextBlock(ContentText textBlock)
+    {
+        this.UserInput = textBlock.Text;
+        this.ReplaceFileAttachments(textBlock.FileAttachments);
+        this.HasUserDraft = true;
+    }
+}

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

@@ -236,12 +236,13 @@ public partial class Workspaces : MSGComponentBase
     private string GetChatTreeIcon(Guid chatId, string defaultIcon)
     {
         var snapshot = this.AIJobService.TryGetChatSnapshot(chatId);
-        return snapshot?.Status switch
+        if (snapshot is null || !snapshot.IsActive)
+            return defaultIcon;
+
+        return snapshot.Status switch
         {
             AIJobStatus.WAITING_FOR_REMOTE => Icons.Material.Filled.HourglassTop,
             AIJobStatus.RUNNING => Icons.Material.Filled.ChangeCircle,
-            AIJobStatus.CANCELED => Icons.Material.Filled.Cancel,
-            AIJobStatus.FAILED => Icons.Material.Filled.Error,
             _ => defaultIcon,
         };
     }
@@ -390,7 +391,6 @@ public partial class Workspaces : MSGComponentBase
             {
                 this.CurrentChatThread = chat;
                 await this.CurrentChatThreadChanged.InvokeAsync(this.CurrentChatThread);
-                await MessageBus.INSTANCE.SendMessage<bool>(this, Event.WORKSPACE_LOADED_CHAT_CHANGED);
             }
             
             return chat;
@@ -439,7 +439,6 @@ public partial class Workspaces : MSGComponentBase
         {
             this.CurrentChatThread = null;
             await this.CurrentChatThreadChanged.InvokeAsync(this.CurrentChatThread);
-            await MessageBus.INSTANCE.SendMessage<bool>(this, Event.WORKSPACE_LOADED_CHAT_CHANGED);
         }
     }
 
@@ -473,7 +472,6 @@ public partial class Workspaces : MSGComponentBase
         {
             this.CurrentChatThread.Name = chat.Name;
             await this.CurrentChatThreadChanged.InvokeAsync(this.CurrentChatThread);
-            await MessageBus.INSTANCE.SendMessage<bool>(this, Event.WORKSPACE_LOADED_CHAT_CHANGED);
         }
         
         await WorkspaceBehaviour.StoreChatAsync(chat);
@@ -596,7 +594,6 @@ public partial class Workspaces : MSGComponentBase
         {
             this.CurrentChatThread = chat;
             await this.CurrentChatThreadChanged.InvokeAsync(this.CurrentChatThread);
-            await MessageBus.INSTANCE.SendMessage<bool>(this, Event.WORKSPACE_LOADED_CHAT_CHANGED);
         }
         
         await WorkspaceBehaviour.StoreChatAsync(chat);

app/MindWork AI Studio/Pages/Chat.razor

@@ -89,6 +89,7 @@
                 <ChatComponent
                     @bind-ChatThread="@this.chatThread"
                     @bind-Provider="@this.providerSettings"
+                    ComposerState="@this.composerState"
                     Workspaces="@this.workspaces"
                     WorkspaceName="name => this.UpdateWorkspaceName(name)"/>
             </EndContent>
@@ -115,6 +116,7 @@
             <ChatComponent
                 @bind-ChatThread="@this.chatThread"
                 @bind-Provider="@this.providerSettings"
+                ComposerState="@this.composerState"
                 Workspaces="@this.workspaces"
                 WorkspaceName="name => this.UpdateWorkspaceName(name)"/>
         </MudStack>
@@ -125,6 +127,7 @@
         <ChatComponent
             @bind-ChatThread="@this.chatThread"
             @bind-Provider="@this.providerSettings"
+            ComposerState="@this.composerState"
             Workspaces="@this.workspaces"
             WorkspaceName="name => this.UpdateWorkspaceName(name)"/>
     }

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

@@ -26,6 +26,7 @@ public partial class Chat : MSGComponentBase
     private string currentWorkspaceName = string.Empty;
     private Workspaces? workspaces;
     private double splitterPosition = 30;
+    private readonly ChatComposerState composerState = new();
     
     private readonly Timer splitterSaveTimer = new(TimeSpan.FromSeconds(1.6));
 

app/MindWork AI Studio/Tools/AIJobs/AIJobService.cs

@@ -17,12 +17,16 @@ public sealed class AIJobService(
     {
         public required CancellationTokenSource CancellationTokenSource { get; init; }
 
+        public required CancellationToken CancellationToken { get; init; }
+
         public required ChatGenerationRequest ChatGenerationRequest { get; init; }
 
         public required AIJobSnapshot Snapshot { get; set; }
 
         public DateTimeOffset LastCheckpoint { get; set; }
 
+        public bool IsCompletionStarted { get; set; }
+
         public readonly Lock SyncRoot = new();
     }
 
@@ -96,9 +100,11 @@ public sealed class AIJobService(
             UpdatedAt = DateTimeOffset.Now,
         };
 
+        var cancellationTokenSource = new CancellationTokenSource();
         var state = new AIJobState
         {
-            CancellationTokenSource = new CancellationTokenSource(),
+            CancellationTokenSource = cancellationTokenSource,
+            CancellationToken = cancellationTokenSource.Token,
             ChatGenerationRequest = request,
             Snapshot = snapshot,
             LastCheckpoint = DateTimeOffset.MinValue,
@@ -131,8 +137,23 @@ public sealed class AIJobService(
         if (!this.jobs.TryGetValue(jobId, out var job))
             return;
 
-        if (!job.CancellationTokenSource.IsCancellationRequested)
-            await job.CancellationTokenSource.CancelAsync();
+        lock (job.SyncRoot)
+        {
+            if (job.IsCompletionStarted)
+                return;
+        }
+
+        try
+        {
+            if (!job.CancellationTokenSource.IsCancellationRequested)
+                await job.CancellationTokenSource.CancelAsync();
+        }
+        catch (ObjectDisposedException)
+        {
+            return;
+        }
+
+        await this.CompleteChatGenerationAsync(job, AIJobStatus.CANCELED);
     }
 
     public async Task CancelChatGenerationAsync(Guid chatId)
@@ -167,13 +188,14 @@ public sealed class AIJobService(
     private async Task RunChatGenerationAsync(AIJobState state)
     {
         var request = state.ChatGenerationRequest;
-        var token = state.CancellationTokenSource.Token;
+        var token = state.CancellationToken;
 
         try
         {
+            token.ThrowIfCancellationRequested();
+
             var provider = request.ProviderSettings.CreateProvider();
             var chatThread = request.ChatThread;
-            var aiText = request.AIText;
 
             if (!chatThread.IsLLMProviderAllowed(provider))
             {
@@ -188,6 +210,8 @@ public sealed class AIJobService(
                 return;
             }
 
+            token.ThrowIfCancellationRequested();
+
             try
             {
                 var rag = new AISrcSelWithRetCtxVal();
@@ -207,21 +231,18 @@ public sealed class AIJobService(
                 logger.LogError(e, "Skipping the RAG process due to an error.");
             }
 
+            token.ThrowIfCancellationRequested();
+
             var lastStreamingEvent = DateTimeOffset.MinValue;
-            aiText.InitialRemoteWait = true;
+            if (!TrySetWaitingForRemote(state, token))
+                return;
             
             await this.NotifyChangedAsync(state);
             await foreach (var contentStreamChunk in provider.StreamChatCompletion(request.ProviderSettings.Model, chatThread, settingsManager, token))
             {
-                if (token.IsCancellationRequested)
+                if (!TryApplyStreamChunk(state, contentStreamChunk, token))
                     break;
 
-                aiText.InitialRemoteWait = false;
-                aiText.IsStreaming = true;
-                aiText.Text += contentStreamChunk;
-                aiText.Sources.MergeSources(contentStreamChunk.Sources);
-
-                UpdateStatus(state, AIJobStatus.RUNNING);
                 var now = DateTimeOffset.Now;
                 if (!settingsManager.ConfigurationData.App.IsSavingEnergy || now - lastStreamingEvent > STREAMING_EVENT_MIN_TIME)
                 {
@@ -255,11 +276,21 @@ public sealed class AIJobService(
 
     private async Task CompleteChatGenerationAsync(AIJobState state, AIJobStatus status, string errorMessage = "")
     {
+        lock (state.SyncRoot)
+        {
+            if (state.IsCompletionStarted)
+                return;
+
+            state.IsCompletionStarted = true;
+        }
+
         var aiText = state.ChatGenerationRequest.AIText;
         aiText.InitialRemoteWait = false;
         aiText.IsStreaming = false;
         aiText.Text = aiText.Text.RemoveThinkTags().Trim();
 
+        RemoveEmptyAIResponse(state);
+
         lock (state.SyncRoot)
         {
             state.Snapshot = state.Snapshot with
@@ -290,18 +321,41 @@ public sealed class AIJobService(
             state.ChatGenerationRequest.ChatThread.Blocks.Remove(aiBlock);
     }
 
-    private static void UpdateStatus(AIJobState state, AIJobStatus status)
+    private static bool TrySetWaitingForRemote(AIJobState state, CancellationToken token)
     {
         lock (state.SyncRoot)
         {
-            if (state.Snapshot.Status == status)
-                return;
+            if (state.IsCompletionStarted || token.IsCancellationRequested)
+                return false;
 
-            state.Snapshot = state.Snapshot with
+            state.ChatGenerationRequest.AIText.InitialRemoteWait = true;
+            return true;
+        }
+    }
+
+    private static bool TryApplyStreamChunk(AIJobState state, ContentStreamChunk contentStreamChunk, CancellationToken token)
+    {
+        lock (state.SyncRoot)
+        {
+            if (state.IsCompletionStarted || token.IsCancellationRequested)
+                return false;
+
+            var aiText = state.ChatGenerationRequest.AIText;
+            aiText.InitialRemoteWait = false;
+            aiText.IsStreaming = true;
+            aiText.Text += contentStreamChunk;
+            aiText.Sources.MergeSources(contentStreamChunk.Sources);
+
+            if (state.Snapshot.Status is not AIJobStatus.RUNNING)
             {
-                Status = status,
-                UpdatedAt = DateTimeOffset.Now,
-            };
+                state.Snapshot = state.Snapshot with
+                {
+                    Status = AIJobStatus.RUNNING,
+                    UpdatedAt = DateTimeOffset.Now,
+                };
+            }
+
+            return true;
         }
     }
 

app/MindWork AI Studio/Tools/MessageBus.cs

@@ -64,11 +64,11 @@ public sealed class MessageBus
             {
                 foreach (var (receiver, componentFilter) in this.componentFilters)
                 {
-                    if (componentFilter.Length > 0 && sendingComponent is not null && !componentFilter.Contains(sendingComponent))
+                    if (componentFilter.Length > 0 && message.SendingComponent is not null && !componentFilter.Contains(message.SendingComponent))
                         continue;
 
                     var eventFilter = this.componentEvents[receiver];
-                    if (eventFilter.Length == 0 || eventFilter.Contains(triggeredEvent))
+                    if (eventFilter.Length == 0 || eventFilter.Contains(message.TriggeredEvent))
 
                         // We don't await the task here because we don't want to block the message bus:
                         _ = receiver.ProcessMessage(message.SendingComponent, message.TriggeredEvent, message.Data);

app/MindWork AI Studio/wwwroot/changelog/v26.5.5.md

@@ -15,8 +15,10 @@
 - Fixed an issue where attached documents were detached when editing a previous prompt. They now remain attached.
 - Fixed an issue where failed transcription requests could be shown as empty transcription results instead of a clear error message.
 - Fixed an issue where an AI response in chat could be interrupted when you interacted with workspaces, such as opening, closing, or resizing the workspace panel.
+- Fixed an issue with switching between chat threads while multiple chats are running.
 - Fixed error messages for provider requests so missing OpenAI API credits and too many requests are shown clearly in chats, assistants, transcription, and model loading.
 - Fixed missing translations for file type names in file selection dialogs.
+- Fixed the chat user prompt being cleared when toggling the workspace view.
 - Upgraded the native secret storage integration to `keyring-core`, keeping API keys in the secure credential store provided by the operating system.
 - Upgraded Rust to v1.95.0.
 - Upgraded .NET to v9.0.16.