aspose.cells
Class AbstractCalculationMonitor

function getOriginalValue()

Gets the old value of the calculated cell. Should be used only in beforeCalculate(int, int, int) and afterCalculate(int, int, int).

function getValueChanged()

Whether the cell's value has been changed after the calculation. Should be used only in afterCalculate(int, int, int).

function getCalculatedValue()

Gets the newly calculated value of the cell. Should be used only in afterCalculate(int, int, int).

function beforeCalculate(sheetIndex, rowIndex, colIndex)

Implement this method to do business before calculating one cell.

Parameters:

sheetIndex: Number - Index of the sheet that the cell belongs to.

rowIndex: Number - Row index of the cell

colIndex: Number - Column index of the cell

function afterCalculate(sheetIndex, rowIndex, colIndex)

Implement this method to do business after one cell has been calculated.

Parameters:

sheetIndex: Number - Index of the sheet that the cell belongs to.

rowIndex: Number - Row index of the cell

colIndex: Number - Column index of the cell

function onCircular(circularCellsData)

Implement this method to do business when calculating one cell and circular references being encountered

To process circular references, please make sure the value of property WorkbookSettings.Iteration is true and WorkbookSettings.MaxIteration is greater than 0.

Parameters:

circularCellsData: Iterator - IEnumerator to enumerate cells(represented by CalculationCell object) in the circular chain

Returns:

Whether the formula engine needs to calculate those cells in circular after this call. True to let the formula engine continue to do calculation for them. False to let the formula engine just mark those cells in circular as Calculated. At the meantime, user may set the expected value as calculated result for the cell in this implementation.