components/test/data/actor/script_tool_cancel.html

<!DOCTYPE html>
<html>
<head>
  <title>Script tool cancellation test</title>
</head>
<body>
  <script>
    window.signalAborted = false;
    window.toolCancelFired = false;
    document.modelContext.addEventListener('toolcancel', e => {
      if (e.toolName === 'hanging_tool') {
        window.toolCancelFired = true;
      }
    });
    document.modelContext.registerTool({
      name: 'hanging_tool',
      description: 'Hangs until cancelled by actor',
      execute: (input, options) => {
        options.signal.addEventListener('abort', () => {
          window.signalAborted = true;
        });
        window.domAutomationController.send('hanging_tool_started');
        return new Promise(() => {});
      }
    });
  </script>
</body>
</html>