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       
(Showing Draft Content)

Cross Workbook Formula

SpreadJS provides support for formulas that calculate values by referring to and using data from different workbooks. These formulas are known as cross-workbook formulas and can be used through the following syntax:


'filePath[workbookName]sheetName'!CellOrRangeAddress


For example: “=[Calc.xlsx]Sheet1!A1”, “=[Calc.xlsx]Sheet1!A1:B3”

Note: The cross-workbook reference does not support dynamic array spill or the INDIRECT function.

Update Reference

You can set or update the data of external sources with the workbook JSON. The updateExternalReference method accepts the following parameters.

Parameter

Description

linkName

Indicates the file name of the external source; mostly ends with ".xlsx".

data

Indicates the JSON data of the external source.

It can be spread.toJSON() or the data can be fetched by data[sheetName][rowIndex][colIndex].

filePath

Indicates the file path or the link of the file.

The value of this parameter can be null if no duplicate linkNames are available.

isMergeUpdate

Indicates whether to update by merging.

Note that if this parameter is set to false, the entire external sheet's data will be overwritten.

The following GIF illustrates how SpreadJS updates the external references set in "Workbook 1" and “Workbook 2” when the A1 cell is updated in “Workbook 1”.



var spread1 = new GC.Spread.Sheets.Workbook(document.getElementById('ss1'), { sheetCount: 1 });
var spread2 = new GC.Spread.Sheets.Workbook(document.getElementById('ss2'), { sheetCount: 1 });
            
// Set value in cell A1 of Spread1
spread1.sheets[0].setValue(0, 0, 5);

var spread1Task;
function updateSpread1() {
    if (!spread1Task) {
        spread1Task = setTimeout(() => {
            spread1.updateExternalReference("calc.xlsx", spread2.toJSON());
            spread1Task = null;
        })
    }
}

var spread2Task;
function updateSpread2() {
    if (!spread2Task) {
        spread2Task = setTimeout(() => {
            spread2.updateExternalReference("result.xlsx", spread1.toJSON());
            spread2Task = null;
        })
    }
}

spread1.bind(GC.Spread.Sheets.Events.ValueChanged, updateSpread2)
spread1.bind(GC.Spread.Sheets.Events.RangeChanged, updateSpread2)
spread2.bind(GC.Spread.Sheets.Events.ValueChanged, updateSpread1)
spread2.bind(GC.Spread.Sheets.Events.RangeChanged, updateSpread1)

// Sample
spread1.updateExternalReference("calc.xlsx", spread2.toJSON());
spread2.updateExternalReference("result.xlsx", spread1.toJSON());
spread1.sheets[0].setFormula(1, 0, "='[calc.xlsx]Sheet1'!A1");
spread2.sheets[0].setFormula(0, 0, "='[result.xlsx]Sheet1'!A1^2");

Additionally, the data of external sources can also be updated partially by setting the isMergeUpdate parameter to true. Here is an example of setting a cross-workbook formula and updating partial of the external source.

var spread = new GC.Spread.Sheets.Workbook(document.getElementById('ss'), { sheetCount: 1 });

spread.getActiveSheet().setFormula(0, 0, "=SUM('D:\\[calc.xlsx]Sheet1'!A1:B2");  
	// spread cell A1 value is #REF!

spread.updateExternalReference("calc.xlsx", { "Sheet1": [[1, 2], [1, 3]] }); 
 	// spread cell A1 value is 7

spread.updateExternalReference("calc.xlsx", { "Sheet1": [[], [11, 13]] }, "D:\\" /* or null*/, true); 
	// spread cell A1 value is 27, the external data is {"Sheet1":[[1, 2],[11, 13]]}

spread.updateExternalReference("calc.xlsx", { "Sheet1": [[], [1, 13]] }, null /* or "D:\\" */); 
	// spread cell A1 value is 14, the external data is {"Sheet1":[[null, null],[1, 13]]}

Fetch Reference

You can fetch the cross-workbook reference list of the current workbook. The getExternalReferences method returns an array of objects containing the file name and the file path of the cross-workbook reference.

The following code sample shows how to fetch a list of external references used in the current worksheet.

var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"), { sheetCount: 1 });
var sheet = spread.getActiveSheet();
sheet.setFormula(0, 0, "='[Jackson.xlsx]Sheet1'!A1");
sheet.setFormula(1, 0, "='[Petrosky]Sheet1'!A1");
console.log(spread.getExternalReferences());

// Output:
// Array(2)
// 0: { name: 'Jackson.xlsx', filePath: '' }
// 1: { name: 'Petrosky', filePath: '' }

Using SpreadJS Designer

The SpreadJS Designer helps to update the cross-workbook values in a worksheet through the Edit Links option in the DATA > Queries & Connections group.




It opens the following dialog window where you can update sources.