Method GetCursorDownPosition

document.go:363–372

GetCursorDownPosition return the relative cursor position (character index) where we would be if the user pressed the arrow-down button.

(count int, preferredColumn int)

// GetCursorDownPosition return the relative cursor position (character index) where we would be if the
// user pressed the arrow-down button.
func (d *Document) GetCursorDownPosition(count int, preferredColumn int) int {
	var col int
	if preferredColumn == -1 { // -1 means nil
		col = d.CursorPositionCol()
	} else {
		col = preferredColumn
	}
	row := d.CursorPositionRow() + count
	return d.TranslateRowColToIndex(row, col) - d.cursorPosition
}

// Lines returns the array of all the lines.
func (d *Document) Lines() []string {