Adding new Visual Selector for choosing the area of the webpage to monitor - playwright/browserless only (#566)

changedetectionio/__init__.py

@@ -626,6 +626,12 @@ def changedetection_app(config=None, datastore_o=None):
             if request.method == 'POST' and not form.validate():
                 flash("An error occurred, please see below.", "error")
 
+            visualselector_data_is_ready = datastore.visualselector_data_is_ready(uuid)
+
+            # Only works reliably with Playwright
+            visualselector_enabled = os.getenv('PLAYWRIGHT_DRIVER_URL', False) and default['fetch_backend'] == 'html_webdriver'
+
+
             output = render_template("edit.html",
                                      uuid=uuid,
                                      watch=datastore.data['watching'][uuid],
@@ -633,7 +639,9 @@ def changedetection_app(config=None, datastore_o=None):
                                      has_empty_checktime=using_default_check_time,
                                      using_global_webdriver_wait=default['webdriver_delay'] is None,
                                      current_base_url=datastore.data['settings']['application']['base_url'],
-                                     emailprefix=os.getenv('NOTIFICATION_MAIL_BUTTON_PREFIX', False)
+                                     emailprefix=os.getenv('NOTIFICATION_MAIL_BUTTON_PREFIX', False),
+                                     visualselector_data_is_ready=visualselector_data_is_ready,
+                                     visualselector_enabled=visualselector_enabled
                                      )
 
         return output
@@ -976,10 +984,9 @@ def changedetection_app(config=None, datastore_o=None):
 
     @app.route("/static/<string:group>/<string:filename>", methods=['GET'])
     def static_content(group, filename):
+        from flask import make_response
+
         if group == 'screenshot':
-
-            from flask import make_response
-
             # Could be sensitive, follow password requirements
             if datastore.data['settings']['application']['password'] and not flask_login.current_user.is_authenticated:
                 abort(403)
@@ -998,6 +1005,26 @@ def changedetection_app(config=None, datastore_o=None):
             except FileNotFoundError:
                 abort(404)
 
+
+        if group == 'visual_selector_data':
+            # Could be sensitive, follow password requirements
+            if datastore.data['settings']['application']['password'] and not flask_login.current_user.is_authenticated:
+                abort(403)
+
+            # These files should be in our subdirectory
+            try:
+                # set nocache, set content-type
+                watch_dir = datastore_o.datastore_path + "/" + filename
+                response = make_response(send_from_directory(filename="elements.json", directory=watch_dir, path=watch_dir + "/elements.json"))
+                response.headers['Content-type'] = 'application/json'
+                response.headers['Cache-Control'] = 'no-cache, no-store, must-revalidate'
+                response.headers['Pragma'] = 'no-cache'
+                response.headers['Expires'] = 0
+                return response
+
+            except FileNotFoundError:
+                abort(404)
+
         # These files should be in our subdirectory
         try:
             return send_from_directory("static/{}".format(group), path=filename)
@@ -1150,7 +1177,6 @@ def changedetection_app(config=None, datastore_o=None):
         # paste in etc
         return redirect(url_for('index'))
 
-
     # @todo handle ctrl break
     ticker_thread = threading.Thread(target=ticker_thread_check_time_launch_checks).start()