R/app_ui.R

In almeidasilvaf/SoyInsectGCN: Gene coexpression network of soybean infested with pests

#' The application User-Interface
#' 
#' @param request Internal parameter for `{shiny}`. 
#'
#' @importFrom shiny selectizeInput tags fluidRow div plotOutput tagList selectInput
#' @importFrom shinydashboard dashboardPage dashboardHeader dashboardSidebar
#' dashboardBody valueBoxOutput box
#' @importFrom DT DTOutput
#' @noRd
app_ui <- function(request) {
  shiny::tagList(
    golem_add_external_resources(),
    shinydashboard::dashboardPage(
      skin="blue",
      shinydashboard::dashboardHeader(title = "SoyPestGCN"),
      shinydashboard::dashboardSidebar(
        shiny::selectInput("taxon_id", label = shiny::h4("Choose network:"), 
                           choices = list("Insect GCN" = "insect", 
                                          "Nematode GCN" = "nematode")
                           ),
        shiny::selectizeInput('gene_id', shiny::h4('Enter gene ID:'), 
                              choices = NULL,
                              options = list(
                                placeholder = 'Glyma.01G001000',
                                onInitialize = I('function() { this.setValue(""); }')
                                )
                              ),
        shiny::tags$p(style="text-align: justify; padding-left: 10px; 
                      padding-right: 10px;",
                      "The input gene IDs must be based on the Wm82.a2.v1 assembly. 
                      Your input gene will not be present in the network if its 
                      median expression across samples is lower than 5 TPM."),
        shiny::tags$div(
               align = "center",
               shiny::tags$img(
                 src = "www/logo.png", width = "70%", align = "center"
               )
             )
        ),
      shinydashboard::dashboardBody(
        shiny::fluidRow(
          shinydashboard::valueBoxOutput("module"),
          shinydashboard::valueBoxOutput("degree"),
          shinydashboard::valueBoxOutput("hub_status")
        ),
        shiny::fluidRow(
          shinydashboard::box(
            title = "Module enrichment",
            solidHeader = TRUE,
            width = 12,
            collapsible = TRUE,
            shiny::div(DT::DTOutput("mod_enrich"), style = "font-size: 90%;")),
        )
      )
    )
  )
  
}

#' Add external Resources to the Application
#' 
#' This function is internally used to add external
#' resources inside the Shiny application. 
#' 
#' @importFrom shiny tags
#' @importFrom golem add_resource_path activate_js favicon bundle_resources
#' @noRd
golem_add_external_resources <- function(){
  
  add_resource_path(
    'www', app_sys('app/www')
  )
 
  tags$head(
    favicon(app_sys("app/www/favicon.ico")),
    bundle_resources(
      path = app_sys('app/www'),
      app_title = 'SoyPestGCN'
    )
    # Add here other external resources
    # for example, you can add shinyalert::useShinyalert() 
  )
}