Merge branch 'feature/plugins' into 'dev'

Resolve "Plugin support"

Closes #29

See merge request leon.hoppe/hopframe!30

.idea/.idea.HopFrame/.idea/workspace.xml

@@ -11,15 +11,11 @@
     <option name="autoReloadType" value="SELECTIVE" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="0648788e-7696-4e60-bf12-5d5601f33d8c" name="Changes" comment="">
+    <list default="true" id="0648788e-7696-4e60-bf12-5d5601f33d8c" name="Changes" comment="Added plugin buttons">
-      <change afterPath="$PROJECT_DIR$/src/HopFrame.Web/Components/HopFrameCard.razor" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/HopFrame.Web/Components/Pages/HopFrameTablePage.razor" beforeDir="false" afterPath="$PROJECT_DIR$/src/HopFrame.Web/Components/Pages/HopFrameTablePage.razor" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/src/HopFrame.Web/HopFrameConfiguratorExtensions.cs" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/HopFrame.Web/Plugins/Events/PageInitializedEvent.cs" beforeDir="false" afterPath="$PROJECT_DIR$/src/HopFrame.Web/Plugins/Events/TableInitializedEvent.cs" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/src/HopFrame.Web/Models/CustomView.cs" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/HopFrame.Web/Plugins/IPluginOrchestrator.cs" beforeDir="false" afterPath="$PROJECT_DIR$/src/HopFrame.Web/Plugins/IPluginOrchestrator.cs" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/.idea.HopFrame/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/.idea.HopFrame/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/HopFrame.Web/Plugins/Internal/PluginOrchestrator.cs" beforeDir="false" afterPath="$PROJECT_DIR$/src/HopFrame.Web/Plugins/Internal/PluginOrchestrator.cs" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/HopFrame.Web/Components/Layout/HopFrameLayout.razor" beforeDir="false" afterPath="$PROJECT_DIR$/src/HopFrame.Web/Components/Layout/HopFrameLayout.razor" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/HopFrame.Web/Components/Layout/HopFrameSideMenu.razor" beforeDir="false" afterPath="$PROJECT_DIR$/src/HopFrame.Web/Components/Layout/HopFrameSideMenu.razor" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/testing/HopFrame.Testing/Components/Pages/Counter.razor" beforeDir="false" afterPath="$PROJECT_DIR$/testing/HopFrame.Testing/Components/Pages/Counter.razor" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/testing/HopFrame.Testing/Program.cs" beforeDir="false" afterPath="$PROJECT_DIR$/testing/HopFrame.Testing/Program.cs" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -63,18 +59,23 @@
   <component name="HighlightingSettingsPerFile">
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/DecompilerCache/decompiler/c73b3c6c598640c592fd3c6fa226c286e90908/02/6ae7626a/IList.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/DecompilerCache/decompiler/c73b3c6c598640c592fd3c6fa226c286e90908/5b/a350be00/IEnumerable.cs" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/DecompilerCache/decompiler/c73b3c6c598640c592fd3c6fa226c286e90908/62/1fb63ed0/IDisposable.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/DecompilerCache/decompiler/c73b3c6c598640c592fd3c6fa226c286e90908/8b/db8582a3/IList`1.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/DecompilerCache/decompiler/c73b3c6c598640c592fd3c6fa226c286e90908/ad/ba9a50e7/ICollection.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/DecompilerCache/decompiler/c73b3c6c598640c592fd3c6fa226c286e90908/fc/6f7933d2/ICollection`1.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/10c66a9a1e137111895f7182a2ae246eabe06a261578c3fa495a45f6f177d35/IconVariant.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/1b81cb3be224213a6a73519b6e340a628d9a1fb8629c351a186a26f6376669/List.cs" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/24dd1164ba47541cb1d3eb011e638e16953dbea3ae3f4dc208c3bbf3e96298a/ServiceCollectionServiceExtensions.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/26c9a2fb5243863babc926e4be763daf4128d4f97c4a769cdce1e2e3e5c532/FluentButton.razor.cs" root0="SKIP_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/2751d5afefca5424bfc4b21347f581372f7a739c0ae4df661ea557fcb97ef20/EnumExtensions.cs" root0="SKIP_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/439c4ee753b23e743cc14119593bc889751f9eb0b38997577d8e4c47c4fed/ToCollection.cs" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/4c41a7d338749915157d56585365d1693fbad6be8231d3d583b1cf10d16896d9/FluentIcon.razor.cs" root0="SKIP_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/4ee221fd7e91e9a4c14ff82aae2ee938edecde35a934133e991aba56aa9499/Icon.cs" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/558c1d46e1e21d2e78ee2ab67a674f6927bf95355b2f245f35d74bb5ec0f92/CancellationTokenSource.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/5a69b82eed595b731b82667db08722b69b82482e275cf32dfb219190e3dc49/CollectionEntry.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/60e7b22380df80ef6fefe43138047f49ec6eff4b25c12b42ce3d6ed5aac/MethodInvokerCommon.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/642391624bd5c30b3411a11434588aba4906207335166b784bf3a4325f6c7/NavigationEntry.cs" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/6d1d64f05e7045295fa180276a8c2aef0302c9e96eb53b3431ab13db4579/FluentAppBarItem.razor.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/6fe785cceb29ca2d1da78e157315815a7c4372b582a20a71c28b210f9d56e/IconsExtensions.cs" root0="SKIP_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/7ad7d2d0ae865063993eb8a03427815ea3bdb6a774e0a2f95512e9f669a4f489/MemberEntry.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/87c584767b46b5fd42769be76547105558e6690f785614efddca134b2d682/Type.cs" root0="FORCE_HIGHLIGHTING" />
@@ -86,11 +87,13 @@
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/d04a416cac8afac0341a8be0e859b230f2eae64924298eef48c317ba35916/RenderTreeBuilder.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/d39923abb31e6a6e7a9e8173e217da584c54925ce63e568126a2b89b9ab/DefaultRazorComponentsServiceOptionsConfiguration.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/d858ddb35a8e36df5573b7612542f9ad50f426b8ab43818587d1ac65fab14829/DatabaseGeneratedAttribute.cs" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/dac3553c90d47a746e7e7f02faecb1a5e581090/Components_AppBar_FluentAppBarItem_razor.g.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/e26a4f2df232f16e374b9719f883c1b2419f6341838d94b7581db9c7d2de17/IconInfo.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/eab2d6b892f743a27cb49a139ba782855897baf1233febd2dfd2092f3/EntityEntry.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/ece8533187fe96ce67b3ef1c9cc3502ef8da5510aadb132a9b21c5605d7c2119/PropertyColumn.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/ee4d234452e240d83e3de396c2e85cbf9ac9fb9add618b955eea196c81aaf8/IDialogContentComponent.cs" root0="SKIP_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/fc2027f7e776fc105cddb56b1a25eeb3895b3ae6f3aac854d786e63bd01f75e2/CallSiteFactory.cs" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/fd57398b7dc3a8ce7da2786f2c67289c3d974658a9e90d0c1e84db3d965fbf1/Console.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/SourcesCache/ff37d54b3bf4d2756237fb789635831532603376e940f63d634b869d26d74c/Regular16.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$PROJECT_DIR$/src/HopFrame.Core/Config/DbContextConfig.cs" root0="FORCE_HIGHLIGHTING" />
   </component>
@@ -122,7 +125,7 @@
     &quot;RunOnceActivity.git.unshallow&quot;: &quot;true&quot;,
     &quot;b5f11219-dfc4-47a1-b02c-90ab603034fb.executor&quot;: &quot;Debug&quot;,
     &quot;dcdf1689-dc07-47e4-8824-2e60a4fbf301.executor&quot;: &quot;Debug&quot;,
-    &quot;git-widget-placeholder&quot;: &quot;!29 on feature/custom-views&quot;,
+    &quot;git-widget-placeholder&quot;: &quot;!30 on feature/plugins&quot;,
     &quot;list.type.of.created.stylesheet&quot;: &quot;CSS&quot;,
     &quot;node.js.detected.package.eslint&quot;: &quot;true&quot;,
     &quot;node.js.detected.package.tslint&quot;: &quot;true&quot;,
@@ -233,6 +236,10 @@
       <workItem from="1738335286481" duration="2039000" />
       <workItem from="1738403493974" duration="4231000" />
       <workItem from="1738418482606" duration="2795000" />
+      <workItem from="1738421294144" duration="1651000" />
+      <workItem from="1738422949337" duration="141000" />
+      <workItem from="1738512801911" duration="6776000" />
+      <workItem from="1738769458367" duration="4838000" />
     </task>
     <task id="LOCAL-00001" summary="Added basic configuration">
       <option name="closed" value="true" />
@@ -514,7 +521,39 @@
       <option name="project" value="LOCAL" />
       <updated>1738407710507</updated>
     </task>
-    <option name="localTasksCounter" value="36" />
+    <task id="LOCAL-00036" summary="Added custom views">
+      <option name="closed" value="true" />
+      <created>1738422931038</created>
+      <option name="number" value="00036" />
+      <option name="presentableId" value="LOCAL-00036" />
+      <option name="project" value="LOCAL" />
+      <updated>1738422931038</updated>
+    </task>
+    <task id="LOCAL-00037" summary="Added plugin events">
+      <option name="closed" value="true" />
+      <created>1738519603597</created>
+      <option name="number" value="00037" />
+      <option name="presentableId" value="LOCAL-00037" />
+      <option name="project" value="LOCAL" />
+      <updated>1738519603597</updated>
+    </task>
+    <task id="LOCAL-00038" summary="Passed cancellation tokens to event handlers if needed">
+      <option name="closed" value="true" />
+      <created>1738770468949</created>
+      <option name="number" value="00038" />
+      <option name="presentableId" value="LOCAL-00038" />
+      <option name="project" value="LOCAL" />
+      <updated>1738770468949</updated>
+    </task>
+    <task id="LOCAL-00039" summary="Added plugin buttons">
+      <option name="closed" value="true" />
+      <created>1738773315593</created>
+      <option name="number" value="00039" />
+      <option name="presentableId" value="LOCAL-00039" />
+      <option name="project" value="LOCAL" />
+      <updated>1738773315593</updated>
+    </task>
+    <option name="localTasksCounter" value="40" />
     <servers />
   </component>
   <component name="TypeScriptGeneratedFilesManager">
@@ -565,10 +604,6 @@
   <component name="UnityProjectConfiguration" hasMinimizedUI="false" />
   <component name="VcsManagerConfiguration">
     <option name="CLEAR_INITIAL_COMMIT_MESSAGE" value="true" />
-    <MESSAGE value="Removed Template" />
-    <MESSAGE value="Added policy validation, ordering and virtual listing properties" />
-    <MESSAGE value="Added n -&gt; m relation support" />
-    <MESSAGE value="Added text area support and DI support for modifier functions" />
     <MESSAGE value="Addressed all build warnings" />
     <MESSAGE value="Added documentation for the configurators and service extensions methods" />
     <MESSAGE value="Created tests for the core module" />
@@ -590,6 +625,10 @@
     <MESSAGE value="Added missing installation instructions" />
     <MESSAGE value="Added modular event system" />
     <MESSAGE value="Fixed event emitter service scope" />
-    <option name="LAST_COMMIT_MESSAGE" value="Fixed event emitter service scope" />
+    <MESSAGE value="Added custom views" />
+    <MESSAGE value="Added plugin events" />
+    <MESSAGE value="Passed cancellation tokens to event handlers if needed" />
+    <MESSAGE value="Added plugin buttons" />
+    <option name="LAST_COMMIT_MESSAGE" value="Added plugin buttons" />
   </component>
 </project>

src/HopFrame.Core/Callbacks/CallbackTypes.cs

@@ -1,8 +1,8 @@
 using HopFrame.Core.Config;
 
-namespace HopFrame.Core.Events;
+namespace HopFrame.Core.Callbacks;
 
-public static class EventTypes {
+public static class CallbackTypes {
 
     private const string Prefix = "HopFrame.";
     private const string CreateEntryPrefix = Prefix + "Entry.Create.";
@@ -13,18 +13,18 @@ public static class EventTypes {
     public static string UpdateEntry(TableConfig config) => UpdateEntryPrefix + config.PropertyName;
     public static string DeleteEntry(TableConfig config) => DeleteEntryPrefix + config.PropertyName;
 
-    public static string ConstructEventName(EventType type, TableConfig config) {
+    public static string ConstructCallbackName(CallbackType type, TableConfig config) {
         return type switch {
-            EventType.CreateEntry => CreateEntry(config),
+            CallbackType.CreateEntry => CreateEntry(config),
-            EventType.UpdateEntry => UpdateEntry(config),
+            CallbackType.UpdateEntry => UpdateEntry(config),
-            EventType.DeleteEntry => DeleteEntry(config),
+            CallbackType.DeleteEntry => DeleteEntry(config),
             _ => Prefix
         };
     }
 
 }
 
-public enum EventType {
+public enum CallbackType {
     CreateEntry = 0,
     UpdateEntry = 1,
     DeleteEntry = 2

src/HopFrame.Core/Callbacks/HopCallbackHandler.cs

@@ -1,6 +1,6 @@
-namespace HopFrame.Core.Events;
+namespace HopFrame.Core.Callbacks;
 
-public readonly struct HopEventHandler(string eventType, Func<object, IServiceProvider, Task> handler) {
+public readonly struct HopCallbackHandler(string eventType, Func<object, IServiceProvider, Task> handler) {
     public Guid Id { get; } = Guid.CreateVersion7();
     public Func<object, IServiceProvider, Task> Handler { get; } = handler;
     public string EventType { get; } = eventType;

src/HopFrame.Core/Callbacks/ICallbackEmitter.cs

@@ -0,0 +1,14 @@
+namespace HopFrame.Core.Callbacks;
+
+public interface ICallbackEmitter {
+    
+    Guid RegisterCallbackHandler(string @event, Func<object, IServiceProvider, Task> handler);
+    
+    bool RemoveCallbackHandler(Guid id);
+    
+    Task DispatchCallback(string @event, object argument = null!);
+
+    void RemoveAllCallbackHandlers(string @event);
+    void RemoveAllCallbackHandlers();
+
+}

src/HopFrame.Core/Config/DbContextConfig.cs

@@ -1,5 +1,4 @@
-using HopFrame.Core.Events;
+using Microsoft.EntityFrameworkCore;
-using Microsoft.EntityFrameworkCore;
 
 namespace HopFrame.Core.Config;
 

src/HopFrame.Core/Config/HopFrameConfig.cs

@@ -1,5 +1,6 @@
-using HopFrame.Core.Events;
+using HopFrame.Core.Callbacks;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection;
 
 namespace HopFrame.Core.Config;
 
@@ -8,19 +9,21 @@ public class HopFrameConfig {
     public bool DisplayUserInfo { get; set; } = true;
     public string? BasePolicy { get; set; }
     public string? LoginPageRewrite { get; set; }
-    public List<HopEventHandler> Handlers { get; } = new();
+    public List<HopCallbackHandler> Handlers { get; } = new();
 }
 
 /// <summary>
 /// A helper class for editing the <see cref="HopFrameConfig"/>
 /// </summary>
-public class HopFrameConfigurator(HopFrameConfig config) {
+public class HopFrameConfigurator(HopFrameConfig config, IServiceCollection collection = null!) {
     
     /// <summary>
     /// The Internal HopFrame configuration that's modified by the helper functions
     /// </summary>
     public HopFrameConfig InnerConfig { get; } = config;
 
+    public IServiceCollection ServiceCollection { get; } = collection;
+    
     /// <summary>
     /// Adds all tables defined in the DbContext to the HopFrame ui and configures it using the provided configurator
     /// </summary>
@@ -45,6 +48,18 @@ public class HopFrameConfigurator(HopFrameConfig config) {
         return new DbContextConfigurator<TDbContext>(context);
     }
 
+    public bool HasDbContext<TDbContext>() where TDbContext : DbContext {
+        return InnerConfig.Contexts.Any(context => context.ContextType == typeof(TDbContext));
+    }
+
+    public DbContextConfigurator<TDbContext>? GetDbContext<TDbContext>() where TDbContext : DbContext {
+        var config = InnerConfig.Contexts
+            .SingleOrDefault(context => context.ContextType == typeof(TDbContext));
+        if (config is null) return null;
+
+        return new DbContextConfigurator<TDbContext>(config);
+    }
+
     /// <summary>
     /// Determines if the name of the currently logged-in user should be displayed in the top right corner of the admin ui
     /// </summary>

src/HopFrame.Core/Config/TableConfig.cs

@@ -2,7 +2,7 @@
 using System.ComponentModel.DataAnnotations.Schema;
 using System.Linq.Expressions;
 using System.Reflection;
-using HopFrame.Core.Events;
+using HopFrame.Core.Callbacks;
 
 namespace HopFrame.Core.Config;
 
@@ -191,26 +191,26 @@ public class TableConfigurator<TModel>(TableConfig config) {
     }
 
     /// <summary>
-    /// Adds an event handler of the provided type
+    /// Adds a callback handler of the provided type
     /// </summary>
-    /// <param name="type">The type of event that triggers the handler</param>
+    /// <param name="type">The type of callback that triggers the handler</param>
     /// <param name="handler">The handler delegate</param>
-    public TableConfigurator<TModel> AddEventHandler(EventType type, Func<TModel, IServiceProvider, Task> handler) {
+    public TableConfigurator<TModel> AddCallbackHandler(CallbackType type, Func<TModel, IServiceProvider, Task> handler) {
-        var eventName = EventTypes.ConstructEventName(type, InnerConfig);
+        var eventName = CallbackTypes.ConstructCallbackName(type, InnerConfig);
-        var handlerStore = new HopEventHandler(eventName, (o, provider) => handler.Invoke((TModel)o, provider));
+        var handlerStore = new HopCallbackHandler(eventName, (o, provider) => handler.Invoke((TModel)o, provider));
         InnerConfig.ContextConfig.ParentConfig.Handlers.Add(handlerStore);
         
         return this;
     }
     
     /// <summary>
-    /// Adds an event handler of the provided type
+    /// Adds a callback handler of the provided type
     /// </summary>
-    /// <param name="type">The type of event that triggers the handler</param>
+    /// <param name="type">The type of callback that triggers the handler</param>
     /// <param name="handler">The handler delegate</param>
-    public TableConfigurator<TModel> AddEventHandler(EventType type, Action<TModel, IServiceProvider> handler) {
+    public TableConfigurator<TModel> AddCallbackHandler(CallbackType type, Action<TModel, IServiceProvider> handler) {
-        var eventName = EventTypes.ConstructEventName(type, InnerConfig);
+        var eventName = CallbackTypes.ConstructCallbackName(type, InnerConfig);
-        var handlerStore = new HopEventHandler(eventName, (o, provider) => {
+        var handlerStore = new HopCallbackHandler(eventName, (o, provider) => {
             handler.Invoke((TModel)o, provider);
             return Task.CompletedTask;
         });

src/HopFrame.Core/Events/IEventEmitter.cs

@@ -1,14 +0,0 @@
-namespace HopFrame.Core.Events;
-
-public interface IEventEmitter {
-    
-    Guid RegisterEventHandler(string @event, Func<object, IServiceProvider, Task> handler);
-    
-    bool RemoveEventHandler(Guid id);
-    
-    Task DispatchEvent(string @event, object argument = null!);
-
-    void RemoveAllEventHandlers(string @event);
-    void RemoveAllEventHandlers();
-
-}

src/HopFrame.Core/ServiceCollectionExtensions.cs

@@ -1,4 +1,4 @@
-using HopFrame.Core.Events;
+using HopFrame.Core.Callbacks;
 using HopFrame.Core.Services;
 using HopFrame.Core.Services.Implementations;
 using Microsoft.Extensions.DependencyInjection;
@@ -16,7 +16,7 @@ public static class ServiceCollectionExtensions {
     public static IServiceCollection AddHopFrameServices(this IServiceCollection services) {
         services.AddScoped<IContextExplorer, ContextExplorer>();
         services.TryAddScoped<IHopFrameAuthHandler, DefaultAuthHandler>();
-        services.TryAddScoped<IEventEmitter, EventEmitter>();
+        services.TryAddScoped<ICallbackEmitter, CallbackEmitter>();
         return services;
     }
     

src/HopFrame.Core/Services/Implementations/CallbackEmitter.cs

@@ -1,22 +1,22 @@
 using HopFrame.Core.Config;
-using HopFrame.Core.Events;
+using HopFrame.Core.Callbacks;
 
 namespace HopFrame.Core.Services.Implementations;
 
-internal sealed class EventEmitter(IServiceProvider provider, HopFrameConfig config) : IEventEmitter {
+internal sealed class CallbackEmitter(IServiceProvider provider, HopFrameConfig config) : ICallbackEmitter {
     
-    public Guid RegisterEventHandler(string @event, Func<object, IServiceProvider, Task> handler) {
+    public Guid RegisterCallbackHandler(string @event, Func<object, IServiceProvider, Task> handler) {
-        var handlerStore = new HopEventHandler(@event, handler);
+        var handlerStore = new HopCallbackHandler(@event, handler);
         config.Handlers.Add(handlerStore);
         return handlerStore.Id;
     }
     
-    public bool RemoveEventHandler(Guid id) {
+    public bool RemoveCallbackHandler(Guid id) {
         var count = config.Handlers.RemoveAll(handler => handler.Id == id);
         return count > 0;
     }
     
-    public async Task DispatchEvent(string @event, object argument = null!) {
+    public async Task DispatchCallback(string @event, object argument = null!) {
         var handlers = config.Handlers.Where(handler => handler.EventType == @event);
         var tasks = new List<Task>();
         
@@ -28,11 +28,11 @@ internal sealed class EventEmitter(IServiceProvider provider, HopFrameConfig con
         await Task.WhenAll(tasks);
     }
     
-    public void RemoveAllEventHandlers(string @event) {
+    public void RemoveAllCallbackHandlers(string @event) {
         config.Handlers.RemoveAll(handler => handler.EventType == @event);
     }
     
-    public void RemoveAllEventHandlers() {
+    public void RemoveAllCallbackHandlers() {
         config.Handlers.Clear();
     }
     

src/HopFrame.Web/Components/Dialogs/HopFrameEditor.razor

@@ -1,11 +1,14 @@
 @rendermode InteractiveServer
 @implements IDialogContentComponent<EditorDialogData>
+@implements IDisposable
 
 @using System.Collections
 @using HopFrame.Core.Config
 @using HopFrame.Core.Services
 @using HopFrame.Web.Models
 @using HopFrame.Web.Helpers
+@using HopFrame.Web.Plugins
+@using HopFrame.Web.Plugins.Events
 
 <FluentDialogBody>
     @foreach (var property in Content.Config.Properties.Where(prop => !prop.IsListingProperty).OrderBy(prop => prop.Order)) {
@@ -169,6 +172,7 @@
 @inject IHopFrameAuthHandler Handler
 @inject IToastService Toasts
 @inject IServiceProvider Provider
+@inject IPluginOrchestrator PluginOrchestrator
 
 @code {
     [Parameter]
@@ -181,6 +185,7 @@
     private ITableManager? _manager;
     private readonly Dictionary<string, List<string>> _validationErrors = new();
     private readonly List<PropertyChange> _changes = new();
+    private readonly CancellationTokenSource _tokenSource = new();
 
     protected override void OnInitialized() {
         _currentlyEditing = Content.CurrentObject is not null;
@@ -374,6 +379,14 @@
             
             if (value is null && property.IsRequired)
                 errorList.Add($"{property.Name} is required");
+
+            var eventResult = await PluginOrchestrator.DispatchEvent(new ValidationEvent(this) {
+                Errors = errorList,
+                Property = property,
+                Table = Content.Config
+            }, _tokenSource.Token);
+
+            if (eventResult.IsCanceled) return false;
         }
 
         StateHasChanged();
@@ -390,6 +403,10 @@
         return true;
     }
 
+    public void Dispose() {
+        _tokenSource.Dispose();
+    }
+
     private enum InputType {
         Number,
         Switch,

src/HopFrame.Web/Components/Pages/HopFrameTablePage.razor

@@ -4,9 +4,11 @@
 @implements IDisposable
 
 @using HopFrame.Core.Config
-@using HopFrame.Core.Events
+@using HopFrame.Core.Callbacks
 @using HopFrame.Core.Services
 @using HopFrame.Web.Models
+@using HopFrame.Web.Plugins
+@using HopFrame.Web.Plugins.Events
 @using Microsoft.JSInterop
 @using Microsoft.EntityFrameworkCore
 
@@ -19,7 +21,7 @@
 <div style="display: flex; flex-direction: column; height: 100%">
     <FluentToolbar Class="hopframe-toolbar">
         <h3>@_config?.DisplayName</h3>
-        @if (!DisplaySelection) {
+        @if (!DisplaySelection && _buttonToggles.ShowRefreshButton) {
             <FluentButton
                 IconStart="@(new Icons.Regular.Size16.ArrowClockwise())"
                 OnClick="Reload"
@@ -29,18 +31,34 @@
             </FluentButton>
         }
         
+        @foreach (var button in _pluginButtons.Where(pb => pb.IsForTable(_config)).Where(pb => pb.Position == PluginButtonPosition.TopLeft)) {
+            <FluentButton
+                IconStart="@(button.Icon?.GetInstance())"
+                OnClick="() => button.Handler.Invoke(null!, _config!)">
+                @button.Title
+            </FluentButton>
+        }
+        
         <FluentSpacer />
         <FluentSearch @oninput="OnSearch" @onchange="OnSearch" Style="width: 350px" />
         
-        @if (_hasCreatePolicy && DisplayActions) {
+        @if (_hasCreatePolicy && DisplayActions && _buttonToggles.ShowAddEntityButton) {
-            <FluentButton OnClick="async () => { await CreateOrEdit(null); }">Add Entry</FluentButton>
+            <FluentButton OnClick="async () => { await CreateOrEdit(null); }">Add Entity</FluentButton>
+        }
+
+        @foreach (var button in _pluginButtons.Where(pb => pb.IsForTable(_config)).Where(pb => pb.Position == PluginButtonPosition.TopRight)) {
+            <FluentButton
+                IconStart="@(button.Icon?.GetInstance())"
+                OnClick="() => button.Handler.Invoke(null!, _config!)">
+                @button.Title
+            </FluentButton>
         }
     </FluentToolbar>
     <FluentProgress Visible="_loading" Width="100%" />
 
     <div style="display: flex; overflow-y: auto; flex-grow: 1">
         <div style="flex-grow: 1">
-            <FluentDataGrid Items="_currentlyDisplayedModels.AsQueryable()">
+            <FluentDataGrid Items="CurrentlyDisplayedModels.AsQueryable()">
                 @if (DisplaySelection) {
                     <SelectColumn 
                         TGridItem="object"
@@ -61,13 +79,19 @@
 
                 @if (DisplayActions && (_hasDeletePolicy || _hasUpdatePolicy)) {
                     <TemplateColumn Title="Actions" Align="@Align.End" Style="min-height: 44px; min-width: max-content">
-                        @if (_hasUpdatePolicy) {
+                        @foreach (var button in _pluginButtons.Where(pb => pb.IsForTable(_config)).Where(pb => pb.Position == PluginButtonPosition.OnEntry)) {
+                            <FluentButton OnClick="() => button.Handler.Invoke(context, _config!)">
+                                <FluentIcon Value="@(button.Icon!.GetInstance())" />
+                            </FluentButton>
+                        }
+                        
+                        @if (_hasUpdatePolicy && _buttonToggles.ShowEditButton) {
                             <FluentButton aria-label="Edit entry" OnClick="async () => { await CreateOrEdit(context); }">
                                 <FluentIcon Value="@(new Icons.Regular.Size16.Edit())"/>
                             </FluentButton>
                         }
 
-                        @if (_hasDeletePolicy) {
+                        @if (_hasDeletePolicy && _buttonToggles.ShowDeleteButton) {
                             <FluentButton aria-label="Delete entry" OnClick="async () => { await DeleteEntry(context); }">
                                 <FluentIcon Value="@(new Icons.Regular.Size16.Delete())" Color="Color.Warning"/>
                             </FluentButton>
@@ -118,7 +142,8 @@
 @inject IJSRuntime Js
 @inject IDialogService Dialogs
 @inject IHopFrameAuthHandler Handler
-@inject IEventEmitter Emitter
+@inject ICallbackEmitter Emitter
+@inject IPluginOrchestrator PluginOrchestrator
 
 @code {
     
@@ -143,7 +168,7 @@
     private TableConfig? _config;
     private ITableManager? _manager;
 
-    private object[] _currentlyDisplayedModels = [];
+    public object[] CurrentlyDisplayedModels = [];
     private int _currentPage;
     private int _totalPages;
     private string? _searchTerm;
@@ -155,6 +180,10 @@
 
     private bool _allSelected;
 
+    private readonly CancellationTokenSource _tokenSource = new();
+    private List<PluginButton> _pluginButtons = new();
+    private DefaultButtonToggles _buttonToggles = new();
+
     protected override void OnInitialized() {
         _config ??= Explorer.GetTable(TableDisplayName);
 
@@ -169,12 +198,19 @@
             return;
         }
 
+        var eventResult = await PluginOrchestrator.DispatchEvent(new TableInitializedEvent(this) {
+            Table = _config!
+        });
+        if (eventResult.IsCanceled) return;
+        _pluginButtons = eventResult.PluginButtons;
+        _buttonToggles = eventResult.DefaultButtons;
+
         _hasUpdatePolicy = await Handler.IsAuthenticatedAsync(_config?.UpdatePolicy);
         _hasDeletePolicy = await Handler.IsAuthenticatedAsync(_config?.DeletePolicy);
         _hasCreatePolicy = await Handler.IsAuthenticatedAsync(_config?.CreatePolicy);
         
         _manager ??= Explorer.GetTableManager(_config!.PropertyName);
-        _currentlyDisplayedModels = await _manager!.LoadPage(_currentPage, PerPage).ToArrayAsync();
+        CurrentlyDisplayedModels = await _manager!.LoadPage(_currentPage, PerPage).ToArrayAsync();
         _totalPages = await _manager.TotalPages(PerPage);
     }
 
@@ -189,6 +225,7 @@
 
     public void Dispose() {
         _searchCancel.Dispose();
+        _tokenSource.Dispose();
     }
 
     private CancellationTokenSource _searchCancel = new();
@@ -199,14 +236,31 @@
         _searchCancel = new();
         
         await Task.Delay(500, _searchCancel.Token);
+
+        var eventResult = await PluginOrchestrator.DispatchEvent(new SearchEvent(this) {
+            SearchTerm = _searchTerm,
+            Table = _config!
+        }, _tokenSource.Token);
+        if (eventResult.IsCanceled) return;
+        _searchTerm = eventResult.SearchTerm;
+        
         await Reload();
     }
 
     private async Task Reload() {
         _loading = true;
+
+        var eventResult = await PluginOrchestrator.DispatchEvent(new ReloadEvent(this) {
+            Table = _config!
+        }, _tokenSource.Token);
+        if (eventResult.IsCanceled) {
+            _loading = false;
+            return;
+        }
+        
         if (!string.IsNullOrEmpty(_searchTerm)) {
             (var query, _totalPages) = await _manager!.Search(_searchTerm, 0, PerPage);
-            _currentlyDisplayedModels = query.ToArray();
+            CurrentlyDisplayedModels = query.ToArray();
         }
         else {
             await OnInitializedAsync();
@@ -215,6 +269,15 @@
     }
 
     private async Task ChangePage(int page) {
+        var eventResult = await PluginOrchestrator.DispatchEvent(new PageChangeEvent(this) {
+            CurrentPage = _currentPage,
+            NewPage = page,
+            TotalPages = _totalPages,
+            Table = _config!
+        }, _tokenSource.Token);
+        if (eventResult.IsCanceled) return;
+        page = eventResult.NewPage;
+        
         if (page < 0 || page > _totalPages - 1) return;
         _currentPage = page;
         await Reload();
@@ -226,12 +289,18 @@
             return;
         }
 
+        var eventResult = await PluginOrchestrator.DispatchEvent(new DeleteEntryEvent(this) {
+            Entity = element,
+            Table = _config!
+        }, _tokenSource.Token);
+        if (eventResult.IsCanceled) return;
+        
         var dialog = await Dialogs.ShowConfirmationAsync("Do you really want to delete this entry?");
         var result = await dialog.Result;
         if (result.Cancelled) return;
 
         await _manager!.DeleteItem(element);
-        await Emitter.DispatchEvent(EventTypes.DeleteEntry(_config!), element);
+        await Emitter.DispatchCallback(CallbackTypes.DeleteEntry(_config!), element);
         await Reload();
     }
 
@@ -241,6 +310,22 @@
             return;
         }
 
+        HopFrameTablePageEventArgs eventArgs;
+        if (element is null) {
+            eventArgs = new CreateEntryEvent(this) {
+                Table = _config!
+            };
+        }
+        else {
+            eventArgs = new UpdateEntryEvent(this) {
+                Table = _config!,
+                Entity = element
+            };
+        }
+        
+        var eventResult = await PluginOrchestrator.DispatchEvent(eventArgs, _tokenSource.Token);
+        if (eventResult.IsCanceled) return;
+        
         var panel = await Dialogs.ShowPanelAsync<HopFrameEditor>(new EditorDialogData(_config!, element), new DialogParameters {
             TrapFocus = false
         });
@@ -251,25 +336,33 @@
         
         if (element is null) {
             await _manager!.AddItem(data!.CurrentObject!);
-            await Emitter.DispatchEvent(EventTypes.CreateEntry(_config!), data.CurrentObject!);
+            await Emitter.DispatchCallback(CallbackTypes.CreateEntry(_config!), data.CurrentObject!);
         }
         else {
             await _manager!.EditItem(data!.CurrentObject!);
-            await Emitter.DispatchEvent(EventTypes.UpdateEntry(_config!), data.CurrentObject!);
+            await Emitter.DispatchCallback(CallbackTypes.UpdateEntry(_config!), data.CurrentObject!);
         }
         
         await Reload();
     }
 
     private void SelectItem(object item, bool selected) {
+        var eventResult = PluginOrchestrator.DispatchEvent(new SelectEntryEvent(this) {
+            Entity = item,
+            Selected = selected,
+            Table = _config!
+        }, _tokenSource.Token).Result;
+        if (eventResult.IsCanceled) return;
+        selected = eventResult.Selected;
+        
         if (!selected)
             DialogData!.SelectedObjects.Remove(item);
         else DialogData!.SelectedObjects.Add(item);
     }
 
     private void SelectAll() {
-        var selected = _currentlyDisplayedModels.All(DialogData!.SelectedObjects.Contains);
+        var selected = CurrentlyDisplayedModels.All(DialogData!.SelectedObjects.Contains);
-        foreach (var displayedModel in _currentlyDisplayedModels) {
+        foreach (var displayedModel in CurrentlyDisplayedModels) {
             SelectItem(displayedModel, !selected);
         }
         _allSelected = selected;

src/HopFrame.Web/HopFrameConfiguratorExtensions.cs

@@ -1,6 +1,10 @@
-using HopFrame.Core.Config;
+using System.Reflection;
+using HopFrame.Core.Config;
 using HopFrame.Web.Components.Layout;
 using HopFrame.Web.Models;
+using HopFrame.Web.Plugins;
+using HopFrame.Web.Plugins.Annotations;
+using HopFrame.Web.Plugins.Internal;
 
 namespace HopFrame.Web;
 
@@ -29,4 +33,22 @@ public static class HopFrameConfiguratorExtensions {
         return configurator;
     }
 
+    public static HopFrameConfigurator AddPlugin<TPlugin>(this HopFrameConfigurator configurator) where TPlugin : HopFramePlugin {
+        PluginOrchestrator.RegisterPlugin(configurator.ServiceCollection, typeof(TPlugin));
+
+        var methods = typeof(TPlugin).GetMethods()
+            .Where(method => method.IsStatic)
+            .Where(method => method.GetCustomAttributes(true)
+                .Any(attr => attr is PluginConfiguratorAttribute))
+            .Where(method => method.GetParameters().Length < 2);
+        
+        foreach (var method in methods) {
+            if (method.GetParameters().Length > 0)
+                method.Invoke(null, [configurator]);
+            else method.Invoke(null, []);
+        }
+            
+        return configurator;
+    }
+    
 }

src/HopFrame.Web/Plugins/Annotations/EventHandlerAttribute.cs

@@ -0,0 +1,4 @@
+namespace HopFrame.Web.Plugins.Annotations;
+
+[AttributeUsage(AttributeTargets.Method)]
+public class EventHandlerAttribute : Attribute;

src/HopFrame.Web/Plugins/Annotations/PluginConfiguratorAttribute.cs

@@ -0,0 +1,8 @@
+namespace HopFrame.Web.Plugins.Annotations;
+
+/// <summary>
+/// Configures the method as a plugin configurator, so the method gets called, when the plugin is registered.
+/// Only works on static methods
+/// </summary>
+[AttributeUsage(AttributeTargets.Method)]
+public class PluginConfiguratorAttribute : Attribute;

src/HopFrame.Web/Plugins/Events/EntryEvent.cs

@@ -0,0 +1,18 @@
+using HopFrame.Web.Components.Pages;
+
+namespace HopFrame.Web.Plugins.Events;
+
+public sealed class DeleteEntryEvent(HopFrameTablePage sender) : HopFrameTablePageEventArgs(sender) {
+    public required object Entity { get; init; }
+}
+
+public sealed class CreateEntryEvent(HopFrameTablePage sender) : HopFrameTablePageEventArgs(sender);
+
+public sealed class UpdateEntryEvent(HopFrameTablePage sender) : HopFrameTablePageEventArgs(sender) {
+    public required object Entity { get; init; }
+}
+
+public sealed class SelectEntryEvent(HopFrameTablePage sender) : HopFrameTablePageEventArgs(sender) {
+    public required object Entity { get; init; }
+    public required bool Selected { get; set; }
+}

src/HopFrame.Web/Plugins/Events/HopFrameEventArgs.cs

@@ -0,0 +1,27 @@
+using HopFrame.Core.Config;
+using HopFrame.Web.Components.Dialogs;
+using HopFrame.Web.Components.Pages;
+
+namespace HopFrame.Web.Plugins.Events;
+
+public abstract class HopFrameEventArgs(object internalSender) {
+    internal object InternalSender { get; } = internalSender;
+    public bool IsCanceled { get; protected set; }
+    
+    
+    public void SetCancelled(bool canceled) => IsCanceled = canceled;
+}
+
+public abstract class HopFrameEventArgs<TSender>(TSender sender) : HopFrameEventArgs(sender) where TSender : class {
+    public TSender Sender => (TSender)InternalSender;
+}
+
+public abstract class HopFrameTablePageEventArgs(HopFrameTablePage sender)
+    : HopFrameEventArgs<HopFrameTablePage>(sender) {
+    public required TableConfig Table { get; init; }
+}
+
+public abstract class HopFrameEditorEventArgs(HopFrameEditor sender)
+    : HopFrameEventArgs<HopFrameEditor>(sender) {
+    public required TableConfig Table { get; init; }
+}

src/HopFrame.Web/Plugins/Events/PageChangeEvent.cs

@@ -0,0 +1,9 @@
+using HopFrame.Web.Components.Pages;
+
+namespace HopFrame.Web.Plugins.Events;
+
+public sealed class PageChangeEvent(HopFrameTablePage sender) : HopFrameTablePageEventArgs(sender) {
+    public required int CurrentPage { get; init; }
+    public required int TotalPages { get; init; }
+    public required int NewPage { get; set; }
+}

src/HopFrame.Web/Plugins/Events/PluginEventContainer.cs

@@ -0,0 +1,9 @@
+using System.Reflection;
+
+namespace HopFrame.Web.Plugins.Events;
+
+internal sealed class PluginEventContainer {
+    public required MethodInfo Handler { get; init; }
+    public required Type EventType { get; init; }
+    public required bool IsAwaitable { get; init; }
+}

src/HopFrame.Web/Plugins/Events/ReloadEvent.cs

@@ -0,0 +1,7 @@
+using HopFrame.Web.Components.Pages;
+
+namespace HopFrame.Web.Plugins.Events;
+
+public sealed class ReloadEvent(HopFrameTablePage sender) : HopFrameTablePageEventArgs(sender) {
+    
+}

src/HopFrame.Web/Plugins/Events/SearchEvent.cs

@@ -0,0 +1,7 @@
+using HopFrame.Web.Components.Pages;
+
+namespace HopFrame.Web.Plugins.Events;
+
+public sealed class SearchEvent(HopFrameTablePage sender) : HopFrameTablePageEventArgs(sender) {
+    public required string SearchTerm { get; set; }
+}

src/HopFrame.Web/Plugins/Events/TableInitializedEvent.cs

@@ -0,0 +1,101 @@
+using HopFrame.Core.Config;
+using HopFrame.Web.Components.Pages;
+using Microsoft.FluentUI.AspNetCore.Components;
+
+namespace HopFrame.Web.Plugins.Events;
+
+public class TableInitializedEvent(HopFrameTablePage sender) : HopFrameTablePageEventArgs(sender) {
+    public List<PluginButton> PluginButtons { get; } = new();
+    public DefaultButtonToggles DefaultButtons { get; set; } = new();
+    
+    public void AddPageButton(string title, Func<Task> callback, bool pushRight = false, IconInfo? icon = null) {
+        PluginButtons.Add(new() {
+            Title = title,
+            Icon = icon,
+            Position = pushRight ? PluginButtonPosition.TopRight : PluginButtonPosition.TopLeft,
+            Handler = (_, _) => callback.Invoke()
+        });
+    }
+
+    public void AddPageButton(string title, Action callback, bool pushRight = false, IconInfo? icon = null) {
+        AddPageButton(title, () => {
+            callback.Invoke();
+            return Task.CompletedTask;
+        }, pushRight, icon);
+    }
+
+    public void AddEntityButton(IconInfo icon, Func<object, TableConfig, Task> callback) {
+        PluginButtons.Add(new() {
+            Icon = icon,
+            Position = PluginButtonPosition.OnEntry,
+            Handler = callback
+        });
+    }
+
+    public void AddEntityButton(IconInfo icon, Action<object, TableConfig> callback) {
+        AddEntityButton(icon, (obj, cfg) => {
+            callback.Invoke(obj, cfg);
+            return Task.CompletedTask;
+        });
+    }
+
+    public void AddEntityButton<TEntity>(IconInfo icon, Func<TEntity, TableConfig, Task> callback) {
+        PluginButtons.Add(new() {
+            Icon = icon,
+            Position = PluginButtonPosition.OnEntry,
+            Handler = (obj, cfg) => callback.Invoke((TEntity)obj, cfg),
+            TableFilter = typeof(TEntity)
+        });
+    }
+
+    public void AddEntityButton<TEntity>(IconInfo icon, Action<TEntity, TableConfig> callback) {
+        AddEntityButton<TEntity>(icon, (obj, cfg) => {
+            callback.Invoke(obj, cfg);
+            return Task.CompletedTask;
+        });
+    }
+
+    public void AddPageButton<TEntity>(string title, Func<Task> callback, bool pushRight = false, IconInfo? icon = null) {
+        PluginButtons.Add(new() {
+            Title = title,
+            Icon = icon,
+            Position = pushRight ? PluginButtonPosition.TopRight : PluginButtonPosition.TopLeft,
+            Handler = (_, _) => callback.Invoke(),
+            TableFilter = typeof(TEntity)
+        });
+    }
+
+    public void AddPageButton<TEntity>(string title, Action callback, bool pushRight = false, IconInfo? icon = null) {
+        AddPageButton<TEntity>(title, () => {
+            callback.Invoke();
+            return Task.CompletedTask;
+        }, pushRight, icon);
+    }
+}
+
+public struct PluginButton {
+    public PluginButtonPosition Position { get; set; }
+    public Func<object, TableConfig, Task> Handler { get; set; }
+    public string? Title { get; set; }
+    public IconInfo? Icon { get; set; }
+    public Type? TableFilter { get; set; }
+
+    internal bool IsForTable(TableConfig? config) {
+        if (config is null) return false;
+        if (TableFilter is null) return true;
+        return config.TableType == TableFilter;
+    }
+}
+
+public enum PluginButtonPosition {
+    TopLeft = 0,
+    TopRight = 1,
+    OnEntry = 2
+}
+
+public struct DefaultButtonToggles() {
+    public bool ShowRefreshButton { get; set; } = true;
+    public bool ShowAddEntityButton { get; set; } = true;
+    public bool ShowDeleteButton { get; set; } = true;
+    public bool ShowEditButton { get; set; } = true;
+}

src/HopFrame.Web/Plugins/Events/ValidationEvent.cs

@@ -0,0 +1,9 @@
+using HopFrame.Core.Config;
+using HopFrame.Web.Components.Dialogs;
+
+namespace HopFrame.Web.Plugins.Events;
+
+public sealed class ValidationEvent(HopFrameEditor sender) : HopFrameEditorEventArgs(sender) {
+    public required IList<string> Errors { get; init; }
+    public required PropertyConfig Property { get; init; }
+}

src/HopFrame.Web/Plugins/HopFramePlugin.cs

@@ -0,0 +1,3 @@
+namespace HopFrame.Web.Plugins;
+
+public abstract class HopFramePlugin;

src/HopFrame.Web/Plugins/IPluginOrchestrator.cs

@@ -0,0 +1,7 @@
+using HopFrame.Web.Plugins.Events;
+
+namespace HopFrame.Web.Plugins;
+
+public interface IPluginOrchestrator {
+    public Task<TEvent> DispatchEvent<TEvent>(TEvent @event, CancellationToken ct = new()) where TEvent : HopFrameEventArgs;
+}

src/HopFrame.Web/Plugins/Internal/PluginOrchestrator.cs

@@ -0,0 +1,57 @@
+using HopFrame.Web.Plugins.Annotations;
+using HopFrame.Web.Plugins.Events;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace HopFrame.Web.Plugins.Internal;
+
+internal sealed class PluginOrchestrator(IServiceProvider services) : IPluginOrchestrator {
+
+    public static void RegisterPlugin(IServiceCollection collection, Type plugin) {
+        var methods = plugin.GetMethods()
+            .Where(method => method.GetCustomAttributes(true)
+                .Any(attr => attr is EventHandlerAttribute));
+
+        foreach (var method in methods) {
+            var awaitable = method.ReturnType.IsAssignableFrom(typeof(Task));
+            var eventType = method
+                .GetParameters()
+                .FirstOrDefault(param => param.ParameterType.IsAssignableTo(typeof(HopFrameEventArgs)))?.ParameterType;
+            
+            if (eventType is null) continue;
+            var container = new PluginEventContainer {
+                EventType = eventType,
+                IsAwaitable = awaitable,
+                Handler = method
+            };
+            collection.AddSingleton(container);
+            collection.AddScoped(plugin);
+        }
+    }
+
+    public async Task<TEvent> DispatchEvent<TEvent>(TEvent @event, CancellationToken ct = new()) where TEvent : HopFrameEventArgs {
+        var eventContainers = services.GetRequiredService<IEnumerable<PluginEventContainer>>()
+            .Where(container => container.EventType == typeof(TEvent));
+
+        var eventType = typeof(TEvent);
+        var tokenType = typeof(CancellationToken);
+        foreach (var container in eventContainers) {
+            var plugin = services.GetRequiredService(container.Handler.DeclaringType!);
+            var parameters = new List<object?>();
+
+            foreach (var parameter in container.Handler.GetParameters()) {
+                if (parameter.ParameterType == eventType)
+                    parameters.Add(@event);
+                else if (parameter.ParameterType == tokenType)
+                    parameters.Add(ct);
+                else parameters.Add(null);
+            }
+            
+            var result = container.Handler.Invoke(plugin, parameters.ToArray());
+
+            if (container.IsAwaitable)
+                await (Task)result!;
+        }
+
+        return @event;
+    }
+}

src/HopFrame.Web/ServiceCollectionExtensions.cs

@@ -1,8 +1,10 @@
 using HopFrame.Core;
 using HopFrame.Core.Config;
-using HopFrame.Core.Events;
+using HopFrame.Core.Callbacks;
 using HopFrame.Web.Components;
 using HopFrame.Web.Components.Pages;
+using HopFrame.Web.Plugins;
+using HopFrame.Web.Plugins.Internal;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.FluentUI.AspNetCore.Components;
 using Microsoft.AspNetCore.Builder;
@@ -21,7 +23,7 @@ public static class ServiceCollectionExtensions {
     /// <returns>The same service collection that is passed in</returns>
     public static IServiceCollection AddHopFrame(this IServiceCollection services, Action<HopFrameConfigurator> configurator, LibraryConfiguration? fluentUiLibraryConfiguration = null, bool addRazorComponents = true) {
         var config = new HopFrameConfig();
-        configurator.Invoke(new HopFrameConfigurator(config));
+        configurator.Invoke(new HopFrameConfigurator(config, services));
         return AddHopFrame(services, config, fluentUiLibraryConfiguration, addRazorComponents);
     }
 
@@ -38,6 +40,8 @@ public static class ServiceCollectionExtensions {
         services.AddHopFrameServices();
         services.AddFluentUIComponents(fluentUiLibraryConfiguration);
 
+        services.AddScoped<IPluginOrchestrator, PluginOrchestrator>();
+
         if (addRazorComponents) {
             services.AddRazorComponents()
                 .AddInteractiveServerComponents();