navlistPanel:在闪亮的应用程序中按顺序使标签处于活动状态 [英] navlistPanel: Make tabs sequentially active in shiny app

问题描述

我正在尝试编写一个闪亮的应用程序，其中的选项卡按顺序处于活动状态.例如，用户只有在完成第一个选项卡上的任务后才能移动到第二个选项卡.在这种情况下，第一个选项卡将添加一个绿色复选标记(例如)，第二个选项卡将变为活动状态.(接下来的标签也是如此.)

I am trying to write a shiny app in which the tabs are active sequentially. For example, the user can only move to the second tab after he's completed a task on the first tab. In that case, the first tab will have a green checkmark added (for example) and the second tab will become active. (And the same for the next tabs.)

例如，以下是 ui.R 和 server.R 文件:

As an example, here are the ui.R and server.R files:

shinyUI(fluidPage(  
   titlePanel("New Project"), 
   navlistPanel(selected="Data Upload",
   tabPanel("Data Upload",           
         textInput("aInSummary", label = h5("Please type a"), 
                   value = "Enter value...")
         ),   
   tabPanel("Data Check",
         textInput("bInDataCheck", label = h5("Please type b"), 
                   value = "Enter value...")             
         ),   
   tabPanel("Dry Run",
         textInput("cInDryRun", label = h5("Please type c"), 
                   value = "Enter value...")            
        ),                 
   tabPanel("Output"),
   "-----",
   tabPanel("Help-FAQ")
   )
))


shinyServer(function(input, output,server) {
})

我知道我应该在navlistPanel"和tabPanel"中添加id"，但我不确定应该包含在 server.R 文件中的逻辑，因为我看不到用户将如何修改这样的身份证.

I understand that I should be adding "id" in "navlistPanel" and "tabPanel" but I'm not sure about the logic I should include in the server.R file since I don't see how the user will modify such id.

我搜索了闪亮的 google 群组、这里的主题，并阅读了条件面板……但这并不是我真正想要的.非常感谢任何帮助/教程或阅读建议！

I've searched the shiny google group, threads here, and read on Conditional Panels.. but that's not really what I'm looking for. Any help/tutorial or reading suggestion is much appreciated!

推荐答案

这是一个例子.页面加载时，除了第一个导航链接之外的所有链接都被禁用.我在每个部分都添加了完成"按钮.当您按下完成"按钮时，下一个导航链接将启用.

Here's an example. All but the first nav links are disabled when the page loads. I've added 'Done' buttons to each section. When you press a Done button, the next nav link becomes enabled.

 ui <- fluidPage(  
   tags$head(tags$script("
        window.onload = function() {
            $('#mynavlist a:contains(\"Data Check\")').parent().addClass('disabled');
            $('#mynavlist a:contains(\"Dry Run\")').parent().addClass('disabled');
            $('#mynavlist a:contains(\"Output\")').parent().addClass('disabled');
        };

        Shiny.addCustomMessageHandler('activeNavs', function(nav_label) {
            $('#mynavlist a:contains(\"' + nav_label + '\")').parent().removeClass('disabled');
        });
   ")),
   titlePanel("New Project"), 
   navlistPanel(selected="Data Upload", id='mynavlist',
   tabPanel("Data Upload",           
         textInput("aInSummary", label = h5("Please type a"), 
                   value = "Enter value..."),
         br(),
         actionButton('data_upload_done', 'Done')
         ),   
   tabPanel("Data Check",
         textInput("bInDataCheck", label = h5("Please type b"), 
                   value = "Enter value..."),
         br(),
         actionButton('data_check_done', 'Done')
         ),   
   tabPanel("Dry Run",
         textInput("cInDryRun", label = h5("Please type c"), 
                   value = "Enter value..."),
         br(),
         actionButton('dry_run_done', 'Done')
        ),                 
   tabPanel("Output"),
   "-----",
   tabPanel("Help-FAQ")
   )
)


server <- function(input, output,session) {

    observe({
        if (input$data_upload_done > 0) {
            session$sendCustomMessage('activeNavs', 'Data Check')
        }
    })

    observe({
        if (input$data_check_done > 0) {
            session$sendCustomMessage('activeNavs', 'Dry Run')
        }
    })

    observe({
        if (input$dry_run_done > 0) {
            session$sendCustomMessage('activeNavs', 'Output')
        }
    })
}

runApp(list(ui=ui, server=server))

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