显示/隐藏R闪亮中的整个框元素 [英] Show/hide entire box element in R Shiny

问题描述

我目前正在尝试找到一种方法来隐藏/显示整个box()元素(以及其中的所有内容)。我想创建一个可能的按钮，允许用户展开一个特定的框，然后用相同的(甚至不同的)按钮隐藏它。我不想使用ConditionalPanel，因为我的应用程序非常大，它会产生一些问题。

示例代码如下：

library(shiny)
library(shinydashboard)
library(collapsibleTree)
require(colorspace)
# Dataset is from https://community.tableau.com/docs/DOC-1236
load(system.file("extdata/Superstore_Sales.rda", package = "collapsibleTree"))
# For the sake of speed, let's only plot sales in Ontario
Superstore_Sales <- Superstore_Sales[Superstore_Sales$Region=="Ontario",]

# Define UI for application that draws a collapsible tree
ui <- fluidPage(

  # Application title
  titlePanel("Collapsible Tree Example 3: Gradient Mapping"),

  # Sidebar with a select input for the root node
  sidebarLayout(
    sidebarPanel(

      tags$a(href = "https://community.tableau.com/docs/DOC-1236", "Sample dataset from Tableau")
    ),

    # Show a tree diagram with the selected root node
    mainPanel(
      box(title="Tree Output",width='800px',
        collapsibleTreeOutput("plot", height = "500px")
      ),
      box(title="Input",
        selectInput(
          "hierarchy", "Tree hierarchy",
          choices = c(
            "Customer Segment", "Product Category", "Product Sub-Category",
            "Order Priority", "Product Container"
          ),
          selected = c("Customer Segment","Product Category", "Product Sub-Category"),
          multiple = TRUE
        ),
        selectInput(
          "fill", "Node color",
          choices = c("Order Quantity", "Sales", "Unit Price"),
          selected = "Sales"
        )


      )  
    )
  )
)

# Define server logic required to draw a collapsible tree diagram
server <- function(input, output) {
  output$plot <- renderCollapsibleTree({
    collapsibleTreeSummary(
      Superstore_Sales,
      hierarchy = input$hierarchy,
      root = input$fill,
      attribute = input$fill
    )
  })
}

# Run the application
shinyApp(ui = ui, server = server)

主要思想是拥有属于每个框的一个按钮(或多个按钮)，并仅隐藏/显示该特定框。也许用shinyjs可以做到这一点，但我似乎不能理解它应该如何与我目前的结构一起工作。

推荐答案

下面是一个可以扩展到实际应用程序中的最小示例。

它使用shinyjs显示/隐藏该框。关键是给该框一个id，然后在show/hide函数中使用该id值

library(shiny)
library(shinydashboard)
library(shinyjs)

ui <- fluidPage(
    sidebarLayout(
        sidebarPanel(
            useShinyjs()    ## IMPORTANT: so hiny knows to use the shinyjs library
        ),
        mainPanel(
            box(id = "myBox", title = "Tree Output", width = '800px',
                    selectInput(inputId = "myInput", label = "my input", choices = c(letters))
                    ),
            actionButton(inputId = "button", label = "show / hide")
        )
    )
)

server <- function(input, output){

    ## observe the button being pressed
    observeEvent(input$button, {
        
        if(input$button %% 2 == 1){
            shinyjs::hide(id = "myBox")
        }else{
            shinyjs::show(id = "myBox")
        }
    })
}

shinyApp(ui, server)

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