refactor: handler error instead of panic,

Exported functions:

SetCellStyle
InsertCol
RemoveCol
RemoveRow
InsertRow
DuplicateRow
DuplicateRowTo
SetRowHeight
GetRowHeight
GetCellValue
GetCellFormula
GetCellHyperLink
SetCellHyperLink
SetCellInt
SetCellBool
SetCellFloat
SetCellStr
SetCellDefault
GetCellStyle
SetCellValue
MergeCell
SetSheetRow
SetRowVisible
GetRowVisible
SetRowOutlineLevel
GetRowOutlineLevel
GetRows
Columns
SearchSheet
AddTable
GetPicture
AutoFilter
GetColVisible
SetColVisible
GetColOutlineLevel
SetColOutlineLevel
SetColWidth
GetColWidth

inner functions:

adjustHelper
adjustMergeCells
adjustAutoFilter
prepareCell
setDefaultTimeStyle
timeToExcelTime
addDrawingChart
addDrawingVML
addDrawingPicture
getTotalRowsCols
checkRow
addDrawingShape
addTable

1 files changed, 10 insertions, 3 deletions

diff --git a/chart.go b/chart.go
index c31995e..5429b77 100644
--- a/chart.go
+++ b/chart.go
@@ -456,7 +456,10 @@ func (f *File) AddChart(sheet, cell, format string) error {
 	drawingXML := "xl/drawings/drawing" + strconv.Itoa(drawingID) + ".xml"
 	drawingID, drawingXML = f.prepareDrawing(xlsx, drawingID, sheet, drawingXML)
 	drawingRID := f.addDrawingRelationships(drawingID, SourceRelationshipChart, "../charts/chart"+strconv.Itoa(chartID)+".xml", "")
-	f.addDrawingChart(sheet, drawingXML, cell, formatSet.Dimension.Width, formatSet.Dimension.Height, drawingRID, &formatSet.Format)
+	err = f.addDrawingChart(sheet, drawingXML, cell, formatSet.Dimension.Width, formatSet.Dimension.Height, drawingRID, &formatSet.Format)
+	if err != nil {
+		return err
+	}
 	f.addChart(formatSet)
 	f.addContentTypePart(chartID, "chart")
 	f.addContentTypePart(drawingID, "drawings")
@@ -1239,8 +1242,11 @@ func (f *File) drawingParser(path string) (*xlsxWsDr, int) {
 
 // addDrawingChart provides a function to add chart graphic frame by given
 // sheet, drawingXML, cell, width, height, relationship index and format sets.
-func (f *File) addDrawingChart(sheet, drawingXML, cell string, width, height, rID int, formatSet *formatPicture) {
-	col, row := MustCellNameToCoordinates(cell)
+func (f *File) addDrawingChart(sheet, drawingXML, cell string, width, height, rID int, formatSet *formatPicture) error {
+	col, row, err := CellNameToCoordinates(cell)
+	if err != nil {
+		return err
+	}
 	colIdx := col - 1
 	rowIdx := row - 1
 
@@ -1290,4 +1296,5 @@ func (f *File) addDrawingChart(sheet, drawingXML, cell string, width, height, rI
 	}
 	content.TwoCellAnchor = append(content.TwoCellAnchor, &twoCellAnchor)
 	f.Drawings[drawingXML] = content
+	return err
 }