diff --git a/frontend/realtime/src/KonvaApp/constants.ts b/frontend/realtime/src/KonvaApp/constants.ts
index 2acee38532..79e10cbae9 100644
--- a/frontend/realtime/src/KonvaApp/constants.ts
+++ b/frontend/realtime/src/KonvaApp/constants.ts
@@ -2,6 +2,8 @@ export enum AppModes {
   INIT = "INIT",
   PREVIEW = "PREVIEW",
   SELECT = "SELECT",
+  PAINT = "PAINT",
+  ERASER = "ERASER",
   RENDERING = "RENDERING",
 }
 
diff --git a/frontend/realtime/src/KonvaRootComponent/SignaledToolbarMain.tsx b/frontend/realtime/src/KonvaRootComponent/SignaledToolbarMain.tsx
index 2bb107ca1b..f3baac309e 100644
--- a/frontend/realtime/src/KonvaRootComponent/SignaledToolbarMain.tsx
+++ b/frontend/realtime/src/KonvaRootComponent/SignaledToolbarMain.tsx
@@ -50,6 +50,10 @@ export const SignaledToolbarMain = ({
         return () => dispatchUiEvents.addShapeToEngine({ shape: "triangle" });
       case ToolbarMainButtonNames.ADD_SQUARE:
         return () => dispatchUiEvents.addShapeToEngine({ shape: "square" });
+      case ToolbarMainButtonNames.SELECT:
+      case ToolbarMainButtonNames.ERASER:
+      case ToolbarMainButtonNames.PAINT:
+        return (e: React.MouseEvent<HTMLButtonElement, MouseEvent>) => { toolbarMain.setMode(buttonName); dispatchers[buttonName](e); };
       default:
         return dispatchers[buttonName];
     }
diff --git a/frontend/realtime/src/signals/uiAccess/toolbarMain/toolbarMain.ts b/frontend/realtime/src/signals/uiAccess/toolbarMain/toolbarMain.ts
index 28ba56f36f..0a6c0911ee 100644
--- a/frontend/realtime/src/signals/uiAccess/toolbarMain/toolbarMain.ts
+++ b/frontend/realtime/src/signals/uiAccess/toolbarMain/toolbarMain.ts
@@ -1,5 +1,6 @@
 import { signal } from "@preact/signals-react";
 import { ToolbarMainButtonNames } from "~/components/features/ToolbarMain/enum";
+import { isToolbarMode } from "~/signals/uiEvents/toolbarMain/toolbarMain";
 
 interface ToolbarMainSignalInterface {
   disabled: boolean;
@@ -42,6 +43,17 @@ export const toolbarMain = {
       },
     };
   },
+
+  setMode(mode: ToolbarMainButtonNames) {
+    if (!isToolbarMode(mode)) {
+      return;
+    }
+
+    this.changeButtonState(ToolbarMainButtonNames.SELECT, { active: false });
+    this.changeButtonState(ToolbarMainButtonNames.ERASER, { active: false });
+    this.changeButtonState(ToolbarMainButtonNames.PAINT, { active: false });
+    this.changeButtonState(mode, { active: true });
+  }
 };
 
 function initButtonStates() {
diff --git a/frontend/realtime/src/signals/uiEvents/toolbarMain/toolbarMain.ts b/frontend/realtime/src/signals/uiEvents/toolbarMain/toolbarMain.ts
index 10a97a5ff2..60092475e9 100644
--- a/frontend/realtime/src/signals/uiEvents/toolbarMain/toolbarMain.ts
+++ b/frontend/realtime/src/signals/uiEvents/toolbarMain/toolbarMain.ts
@@ -2,6 +2,7 @@ import { MouseEventHandler } from "react";
 import { signal, effect, Signal } from "@preact/signals-react";
 
 import { ToolbarMainButtonNames } from "~/components/features/ToolbarMain/enum";
+import { AppModes } from "~/KonvaApp/constants";
 
 const events = Object.values(ToolbarMainButtonNames).reduce(
   (acc, buttonName) => {
@@ -25,22 +26,35 @@ const effectsCleanups = Object.values(ToolbarMainButtonNames).reduce(
     [key in ToolbarMainButtonNames]: (() => void) | undefined;
   },
 );
+
+export const isToolbarMode = (buttonName: ToolbarMainButtonNames) => {
+  return appModeMap[buttonName] !== undefined;
+}
+
+export const appModeMap: Record<string, AppModes> = {
+  [ToolbarMainButtonNames.SELECT]: AppModes.SELECT,
+  [ToolbarMainButtonNames.ERASER]: AppModes.ERASER,
+  [ToolbarMainButtonNames.PAINT]: AppModes.PAINT,
+}
+
+const defaultHandler = (buttonName: ToolbarMainButtonNames, callback: MouseEventHandler<HTMLButtonElement>) => {
+  if (effectsCleanups[buttonName]) {
+    effectsCleanups[buttonName]();
+  }
+  effectsCleanups[buttonName] = effect(() => {
+    if (events[buttonName].value) {
+      callback(events[buttonName].value);
+      events[buttonName].value = undefined;
+    }
+  });
+}
+
 export const buttonEventsHandlers = Object.values(
   ToolbarMainButtonNames,
 ).reduce(
   (acc, buttonName) => {
     acc[buttonName] = {
-      onClick: (callback: MouseEventHandler<HTMLButtonElement>) => {
-        if (effectsCleanups[buttonName]) {
-          effectsCleanups[buttonName]();
-        }
-        effectsCleanups[buttonName] = effect(() => {
-          if (events[buttonName].value) {
-            callback(events[buttonName].value);
-            events[buttonName].value = undefined;
-          }
-        });
-      },
+      onClick: (callback: MouseEventHandler<HTMLButtonElement>) => { defaultHandler(buttonName, callback) },
     };
     return acc;
   },