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52 lines
1.9 KiB
R
52 lines
1.9 KiB
R
#' File Upload Control
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#'
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#' Create a file upload control that can be used to upload one or more files.
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#'
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#' Whenever a file upload completes, the corresponding input variable is set
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#' to a dataframe. This dataframe contains one row for each selected file, and
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#' the following columns:
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#' \describe{
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#' \item{\code{name}}{The filename provided by the web browser. This is
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#' \strong{not} the path to read to get at the actual data that was uploaded
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#' (see
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#' \code{datapath} column).}
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#' \item{\code{size}}{The size of the uploaded data, in
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#' bytes.}
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#' \item{\code{type}}{The MIME type reported by the browser (for example,
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#' \code{text/plain}), or empty string if the browser didn't know.}
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#' \item{\code{datapath}}{The path to a temp file that contains the data that was
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#' uploaded. This file may be deleted if the user performs another upload
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#' operation.}
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#' }
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#'
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#' @family input elements
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#'
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#' @inheritParams textInput
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#' @param multiple Whether the user should be allowed to select and upload
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#' multiple files at once. \bold{Does not work on older browsers, including
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#' Internet Explorer 9 and earlier.}
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#' @param accept A character vector of MIME types; gives the browser a hint of
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#' what kind of files the server is expecting.
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#'
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#' @export
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fileInput <- function(inputId, label, multiple = FALSE, accept = NULL,
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width = NULL) {
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inputTag <- tags$input(id = inputId, name = inputId, type = "file")
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if (multiple)
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inputTag$attribs$multiple <- "multiple"
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if (length(accept) > 0)
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inputTag$attribs$accept <- paste(accept, collapse=',')
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div(class = "form-group shiny-input-container",
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style = if (!is.null(width)) paste0("width: ", validateCssUnit(width), ";"),
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label %AND% tags$label(label),
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inputTag,
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tags$div(
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id=paste(inputId, "_progress", sep=""),
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class="progress progress-striped active shiny-file-input-progress",
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tags$div(class="progress-bar")
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)
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)
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}
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