diff --git a/canvas_node.py b/canvas_node.py
index c7bab11..48ca6e9 100644
--- a/canvas_node.py
+++ b/canvas_node.py
@@ -24,7 +24,7 @@ import os
 try:
     from python.logger import logger, LogLevel, debug, info, warn, error, exception
 
-    logger.set_module_level('canvas_node', LogLevel.NONE)
+    logger.set_module_level('canvas_node', LogLevel.DEBUG)
 
     logger.configure({
         'log_to_file': True,
diff --git a/js/Canvas.js b/js/Canvas.js
index a92735c..6b90e32 100644
--- a/js/Canvas.js
+++ b/js/Canvas.js
@@ -38,7 +38,7 @@ export class Canvas {
 
         this.dataInitialized = false;
         this.pendingDataCheck = null;
-        this.maskTool = new MaskTool(this);
+        this.maskTool = new MaskTool(this, {onStateChange: this.onStateChange});
         this.initCanvas();
         this.canvasState = new CanvasState(this);
         this.canvasInteractions = new CanvasInteractions(this);
diff --git a/js/MaskTool.js b/js/MaskTool.js
index 6cbc04c..a9b56fd 100644
--- a/js/MaskTool.js
+++ b/js/MaskTool.js
@@ -3,9 +3,10 @@ import {createModuleLogger} from "./utils/LoggerUtils.js";
 const log = createModuleLogger('Mask_tool');
 
 export class MaskTool {
-    constructor(canvasInstance) {
+    constructor(canvasInstance, callbacks = {}) {
         this.canvasInstance = canvasInstance;
         this.mainCanvas = canvasInstance.canvas;
+        this.onStateChange = callbacks.onStateChange || null;
         this.maskCanvas = document.createElement('canvas');
         this.maskCtx = this.maskCanvas.getContext('2d');
 
@@ -88,6 +89,9 @@ export class MaskTool {
             if (this.canvasInstance.canvasState) {
                 this.canvasInstance.canvasState.saveMaskState();
             }
+            if (this.onStateChange) {
+                this.onStateChange();
+            }
         }
     }
 
diff --git a/js/utils/LoggerUtils.js b/js/utils/LoggerUtils.js
index d88afe6..d1cbdbc 100644
--- a/js/utils/LoggerUtils.js
+++ b/js/utils/LoggerUtils.js
@@ -11,7 +11,7 @@ import {logger, LogLevel} from "../logger.js";
  * @param {LogLevel} level - Poziom logowania (domyślnie DEBUG)
  * @returns {Object} Obiekt z metodami logowania
  */
-export function createModuleLogger(moduleName, level = LogLevel.NONE) {
+export function createModuleLogger(moduleName, level = LogLevel.DEBUG) {
     logger.setModuleLevel(moduleName, level);
     
     return {