show formula explanation for GridJs

To display formula explanation when hovering over a specific cell that contains a formula ,the steps are

Set load options.

for example:

 const option = {
     ...
     //set showFormulaExplain to true
    showFormulaExplain:true,
 };
  xs = x_spreadsheet('#gridjs-demo', option)

Set action URL for showFormulaExplain.

for example:

    const formulaExplainUrl = "/GridJs2/FormulaExplain";
    xs.setFormulaExplainUrl(formulaExplainUrl);

When the user moves the mouse over a cell that contains a formula, the action of display formula explanation will be triggered automatically by the spreadsheet application

Implement show formula explanation action API in Controller in serverside.

for example:

 @PostMapping("/FormulaExplain")
 public ResponseEntity<?>  formulaExplain(  
            @RequestParam(name = "v", required = true) String formulaText,  
            @RequestParam(name = "locale", required = false) String locale) {  
        //here the formulaText is the formula in the cell ,etc "=SUM(B1:B10)"
        //check if the formulaText is null or empty  
        if (formulaText == null || formulaText.isEmpty()) {  
            // Return a response indicating failure and an empty string for the corrected content  
            return ResponseEntity.ok(Map.of("success", false, "v", ""));  
        }  
         
        // Call the syntax correction logic, which could be a third-party library or custom code  
        // This is a placeholder method that should be replaced with actual logic  
        String correctedContent = getFormulaExplain(formulaText, locale);  
  
        // Return a response indicating success and the corrected content  
        return ResponseEntity.ok(Map.of("success", true, "v", correctedContent));  
    }  
  
    // Placeholder method for formula explanation
    // This should be replaced with the actual implementation  
    private String getFormulaExplain(String formulaText, String locale) {  
        // Implement your logic to get the detail explanation for the formulaText
        // For demonstration, simply returning the input text  
        return text;  
    }