This closes #1012, support specify the formula in the data validation…

… range, and update the documentation for the `AddPicture`

datavalidation.go

@@ -128,13 +128,37 @@ func (dd *DataValidation) SetDropList(keys []string) error {
 	return nil
 }
 
-// SetRange provides function to set data validation range in drop list.
-func (dd *DataValidation) SetRange(f1, f2 float64, t DataValidationType, o DataValidationOperator) error {
-	if math.Abs(f1) > math.MaxFloat32 || math.Abs(f2) > math.MaxFloat32 {
-		return ErrDataValidationRange
+// SetRange provides function to set data validation range in drop list, only
+// accepts int, float64, or string data type formula argument.
+func (dd *DataValidation) SetRange(f1, f2 interface{}, t DataValidationType, o DataValidationOperator) error {
+	var formula1, formula2 string
+	switch v := f1.(type) {
+	case int:
+		formula1 = fmt.Sprintf("<formula1>%d</formula1>", int(v))
+	case float64:
+		if math.Abs(float64(v)) > math.MaxFloat32 {
+			return ErrDataValidationRange
+		}
+		formula1 = fmt.Sprintf("<formula1>%.17g</formula1>", float64(v))
+	case string:
+		formula1 = fmt.Sprintf("<formula1>%s</formula1>", string(v))
+	default:
+		return ErrParameterInvalid
+	}
+	switch v := f2.(type) {
+	case int:
+		formula2 = fmt.Sprintf("<formula2>%d</formula2>", int(v))
+	case float64:
+		if math.Abs(float64(v)) > math.MaxFloat32 {
+			return ErrDataValidationRange
+		}
+		formula2 = fmt.Sprintf("<formula2>%.17g</formula2>", float64(v))
+	case string:
+		formula2 = fmt.Sprintf("<formula2>%s</formula2>", string(v))
+	default:
+		return ErrParameterInvalid
 	}
-	dd.Formula1 = fmt.Sprintf("<formula1>%.17g</formula1>", f1)
-	dd.Formula2 = fmt.Sprintf("<formula2>%.17g</formula2>", f2)
+	dd.Formula1, dd.Formula2 = formula1, formula2
 	dd.Type = convDataValidationType(t)
 	dd.Operator = convDataValidationOperatior(o)
 	return nil

datavalidation_test.go

@@ -41,6 +41,15 @@ func TestDataValidation(t *testing.T) {
 	assert.NoError(t, f.AddDataValidation("Sheet1", dvRange))
 	assert.NoError(t, f.SaveAs(resultFile))
 
+	f.NewSheet("Sheet2")
+	assert.NoError(t, f.SetSheetRow("Sheet2", "A2", &[]interface{}{"B2", 1}))
+	assert.NoError(t, f.SetSheetRow("Sheet2", "A3", &[]interface{}{"B3", 3}))
+	dvRange = NewDataValidation(true)
+	dvRange.Sqref = "A1:B1"
+	assert.NoError(t, dvRange.SetRange("INDIRECT($A$2)", "INDIRECT($A$3)", DataValidationTypeWhole, DataValidationOperatorBetween))
+	dvRange.SetError(DataValidationErrorStyleStop, "error title", "error body")
+	assert.NoError(t, f.AddDataValidation("Sheet2", dvRange))
+
 	dvRange = NewDataValidation(true)
 	dvRange.Sqref = "A5:B6"
 	for _, listValid := range [][]string{
@@ -86,6 +95,8 @@ func TestDataValidationError(t *testing.T) {
 		return
 	}
 	assert.EqualError(t, err, ErrDataValidationFormulaLenth.Error())
+	assert.EqualError(t, dvRange.SetRange(nil, 20, DataValidationTypeWhole, DataValidationOperatorBetween), ErrParameterInvalid.Error())
+	assert.EqualError(t, dvRange.SetRange(10, nil, DataValidationTypeWhole, DataValidationOperatorBetween), ErrParameterInvalid.Error())
 	assert.NoError(t, dvRange.SetRange(10, 20, DataValidationTypeWhole, DataValidationOperatorGreaterThan))
 	dvRange.SetSqref("A9:B10")
 

picture.go

@@ -76,14 +76,42 @@ func parseFormatPictureSet(formatSet string) (*formatPicture, error) {
 //        }
 //    }
 //
-// LinkType defines two types of hyperlink "External" for web site or
-// "Location" for moving to one of cell in this workbook. When the
-// "hyperlink_type" is "Location", coordinates need to start with "#".
+// The optional parameter "autofit" specifies if make image size auto fits the
+// cell, the default value of that is 'false'.
+//
+// The optional parameter "hyperlink" specifies the hyperlink of the image.
+//
+// The optional parameter "hyperlink_type" defines two types of
+// hyperlink "External" for website or "Location" for moving to one of the
+// cells in this workbook. When the "hyperlink_type" is "Location",
+// coordinates need to start with "#".
+//
+// The optional parameter "positioning" defines two types of the position of a
+// image in an Excel spreadsheet, "oneCell" (Move but don't size with
+// cells) or "absolute" (Don't move or size with cells). If you don't set this
+// parameter, the default positioning is move and size with cells.
+//
+// The optional parameter "print_obj" indicates whether the image is printed
+// when the worksheet is printed, the default value of that is 'true'.
+//
+// The optional parameter "lock_aspect_ratio" indicates whether lock aspect
+// ratio for the image, the default value of that is 'false'.
+//
+// The optional parameter "locked" indicates whether lock the image. Locking
+// an object has no effect unless the sheet is protected.
+//
+// The optional parameter "x_offset" specifies the horizontal offset of the
+// image with the cell, the default value of that is 0.
+//
+// The optional parameter "x_scale" specifies the horizontal scale of images,
+// the default value of that is 1.0 which presents 100%.
+//
+// The optional parameter "y_offset" specifies the vertical offset of the
+// image with the cell, the default value of that is 0.
+//
+// The optional parameter "y_scale" specifies the vertical scale of images,
+// the default value of that is 1.0 which presents 100%.
 //
-// Positioning defines two types of the position of a picture in an Excel
-// spreadsheet, "oneCell" (Move but don't size with cells) or "absolute"
-// (Don't move or size with cells). If you don't set this parameter, default
-// positioning is move and size with cells.
 func (f *File) AddPicture(sheet, cell, picture, format string) error {
 	var err error
 	// Check picture exists first.