Continue work on itb

tools/itb/bin/itb_click

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import os
 import time
 import random
 import argparse
@@ -21,6 +22,13 @@ class ClickExecutor:
         options.add_experimental_option("debuggerAddress", f"127.0.0.1:{debug_port}")
         self.driver = webdriver.Chrome(options=options)
         
+        # Load JavaScript files
+        js_dir = os.path.join(os.path.dirname(__file__), "..", "js")
+        self.js_code = ""
+        for filename in ["viewport.js", "mouse.js"]:
+            with open(os.path.join(js_dir, filename)) as f:
+                self.js_code += f.read() + "\n"
+        
         # Get initial window info
         self.window_size = self.driver.get_window_size()
         debug(f"Window size: {json.dumps(self.window_size)}")
@@ -33,36 +41,15 @@ class ClickExecutor:
 
     def get_viewport_size(self):
         """Get viewport dimensions"""
-        return self.driver.execute_script("""
-            return {
-                width: window.innerWidth,
-                height: window.innerHeight,
-                pageYOffset: window.pageYOffset,
-                pageXOffset: window.pageXOffset
-            };
-        """)
+        return self.driver.execute_script(self.js_code + "; return getViewportInfo();")
         
     def get_scroll_position(self):
         """Get current scroll position"""
-        return self.driver.execute_script("""
-            return {
-                scrollX: window.scrollX,
-                scrollY: window.scrollY,
-                pageXOffset: window.pageXOffset,
-                pageYOffset: window.pageYOffset
-            };
-        """)
+        return self.driver.execute_script(self.js_code + "; return getViewportInfo();")
         
     def get_mouse_position(self):
         """Get current mouse coordinates"""
-        return self.driver.execute_script("""
-            return {
-                screenX: window.screenX,
-                screenY: window.screenY,
-                clientX: window.event ? window.event.clientX : 0,
-                clientY: window.event ? window.event.clientY : 0
-            };
-        """)
+        return self.driver.execute_script(self.js_code + "; return getMousePosition();")
 
     def scroll_to_target(self, x: int, y: int):
         """Scroll to make target coordinates visible"""
@@ -78,9 +65,7 @@ class ClickExecutor:
 
     def get_element_at_position(self, x: int, y: int):
         """Get the element at the specified coordinates"""
-        return self.driver.execute_script("""
-            return document.elementFromPoint(arguments[0], arguments[1]);
-        """, x, y)
+        return self.driver.execute_script(self.js_code + "; return getElementAtPosition(arguments[0], arguments[1]);", x, y)
 
     def execute_click(self, x: int, y: int, double: bool = False, right: bool = False):
         """Execute click operation with improved coordinate handling"""