Created
March 19, 2018 10:11
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Conditional actions in Shiny. #r #shiny
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library(shiny) | |
library(shinyjs) | |
source("module.R") | |
# UI ========================================================================== | |
ui <- fluidPage( | |
useShinyjs(), | |
radioButtons("mode", "Mode", | |
choices = c("Entry" = "entry", | |
"Validation" = "validation"), | |
selected = "entry", inline = TRUE), | |
selectInput("status", "Status", | |
choices = c("NA" = "NA", | |
"Entered" = "entered", | |
"Skipped" = "skipped", | |
"Issue" = "issue", | |
"Validated" = "validated", | |
"Removed" = "removed"), | |
selected = "NA" | |
), | |
hr(), | |
textInput("form", "Form Object"), | |
div(strong("Actions")), | |
div( | |
toolUI("submit", "Submit"), | |
toolUI("skip", "Skip"), | |
toolUI("issue", "Report Issue"), | |
toolUI("validate", "Validate"), | |
toolUI("remove", "Confirm Skip") | |
), | |
br(), | |
div(strong("Comment")), | |
textOutput("comment") | |
) | |
# Server ====================================================================== | |
server <- function(input, output, session) { | |
values <- reactiveValues( | |
status = "NA", | |
mode = "entry", | |
comment = NULL | |
) | |
observe({ values$status <- input$status }) | |
observe({ values$mode <- input$mode }) | |
fill_form <- function() { updateTextInput(session, "form", value = "User entered values") } | |
empty_form <- function() { updateTextInput(session, "form", value = "") } | |
update_comment <- function(comment) { values$comment <- comment } | |
observe({ | |
if (values$mode == "entry") { | |
if (values$status == "NA" | values$status == "issue") { | |
empty_form() | |
sapply(list("submit-tool", "skip-tool"), show) | |
sapply(list("issue-tool", "validate-tool", "remove-tool"), hide) | |
update_comment(NULL) | |
} else if (values$status == "entered") { | |
fill_form() | |
sapply(list("submit-tool", "skip-tool", "issue-tool", "validate-tool", "remove-tool"), hide) | |
update_comment(NULL) | |
} else if (values$status == "skipped") { | |
empty_form() | |
sapply(list("submit-tool", "skip-tool", "issue-tool", "validate-tool", "remove-tool"), hide) | |
update_comment("User's reason to skip") | |
} else { | |
empty_form() | |
sapply(list("submit-tool", "skip-tool", "issue-tool", "validate-tool", "remove-tool"), hide) | |
update_comment(NULL) | |
} | |
} else if (values$mode == "validation") { | |
if (values$status == "entered") { | |
fill_form() | |
sapply(list("issue-tool", "validate-tool"), show) | |
sapply(list("submit-tool", "skip-tool", "remove-tool"), hide) | |
update_comment(NULL) | |
} else if (values$status == "skipped") { | |
empty_form() | |
sapply(list("issue-tool", "remove-tool"), show) | |
sapply(list("submit-tool", "skip-tool", "validate-tool"), hide) | |
update_comment("User's reason to skip") | |
} else if (values$status == "validated") { | |
fill_form() | |
sapply(list("submit-tool", "skip-tool", "issue-tool", "validate-tool", "remove-tool"), hide) | |
update_comment(NULL) | |
} else if (values$status == "removed") { | |
empty_form() | |
sapply(list("submit-tool", "skip-tool", "issue-tool", "validate-tool", "remove-tool"), hide) | |
update_comment("User's reason to remove") | |
} else { | |
empty_form() | |
sapply(list("submit-tool", "skip-tool", "issue-tool", "validate-tool", "remove-tool"), hide) | |
update_comment(NULL) | |
} | |
} | |
}) | |
output$comment <- renderText({ values$comment }) | |
callModule(toolServer, "submit") | |
callModule(toolServer, "skip") | |
callModule(toolServer, "issue") | |
callModule(toolServer, "validate") | |
callModule(toolServer, "remove") | |
} | |
shinyApp(ui, server) |
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# UI ========================================================================== | |
toolUI <- function(id, label) { | |
ns <- NS(id) | |
tagList( | |
actionButton(ns("tool"), label) | |
) | |
} | |
# Server ====================================================================== | |
toolServer <- function(input, output, session) { | |
} |
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