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dde266768c
These functions were temporarily ripped out of Shiny and moved to the htmltools package. We've discovered that it's safe to keep including them in shiny; as long as the functions in shiny and the functions in htmltools are identical, the user won't receive a conflict warning.
37 lines
1.0 KiB
R
37 lines
1.0 KiB
R
\name{validateCssUnit}
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\alias{validateCssUnit}
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\title{Validate proper CSS formatting of a unit}
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\usage{
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validateCssUnit(x)
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}
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\arguments{
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\item{x}{The unit to validate. Will be treated as a number of pixels if a
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unit is not specified.}
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}
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\value{
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A properly formatted CSS unit of length, if possible. Otherwise, will
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throw an error.
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}
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\description{
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Checks that the argument is valid for use as a CSS unit of length.
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}
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\details{
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\code{NULL} and \code{NA} are returned unchanged.
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Single element numeric vectors are returned as a character vector with the
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number plus a suffix of \code{"px"}.
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Single element character vectors must be \code{"auto"} or \code{"inherit"},
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or a number. If the number has a suffix, it must be valid: \code{px},
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\code{\%}, \code{em}, \code{pt}, \code{in}, \code{cm}, \code{mm}, \code{ex},
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or \code{pc}. If the number has no suffix, the suffix \code{"px"} is
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appended.
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Any other value will cause an error to be thrown.
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}
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\examples{
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validateCssUnit("10\%")
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validateCssUnit(400) #treated as '400px'
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}
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