[英]Shiny: Add a hover button on select input choice
问题:我正在尝试将“悬停文本”添加到 shiny 中的 select 输入/多输入 function 中的可用选项中。 根据另一位用户的说法,ShinyBS 的工具提示 function 仅设计用于按 id 选择。 因此,我试图使用比这更好的东西来实现我的结果。
这是我正在尝试修改的绝佳解决方案。 该解决方案涉及创建一个名为selectizeInput
的新 function :(根据函数的创建者)
“[] 移动选项,重新呈现它们,仅在它们第一次显示时呈现它们等等。很多事情都会发生。这就是为什么这个解决方案会抓取周围的 div 并不断监听正在添加的子节点。”
我不太了解 function 发生了什么,但这里是一些可重现代码的示例。 包括上面提到的用户 function selectizeInput
。 如您所见,我正在尝试使用此 function 在我的multiInput
中添加 hover 文本。 我想添加功能,以便当将鼠标悬停在“第 1 组”上时,会弹出“第 1 组定义”文本。
我愿意使用完全不同的解决方案来添加此功能!
我尝试过的:非常感谢任何建议,我最好使用 multiInput。 但是,将多个设置为 TRUE 的 selectInput 也是一个很好的解决方法。 当我这样做时,还会出现其他一些问题。
包含 label 的文本框(在下拉列表中)非常狭窄——不容易阅读定义
选择后,定义将部分隐藏
这是我的代码:
library(shiny)
library(shinyBS)
selectizeTooltip <- function(id, choice, title, placement = "bottom", trigger = "hover", options = NULL){
options = shinyBS:::buildTooltipOrPopoverOptionsList(title, placement, trigger, options)
options = paste0("{'", paste(names(options), options, sep = "': '", collapse = "', '"), "'}")
bsTag <- shiny::tags$script(shiny::HTML(paste0("
$(document).ready(function() {
var opts = $.extend(", options, ", {html: true});
var selectizeParent = document.getElementById('", id, "').parentElement;
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(mutation){
$(mutation.addedNodes).filter('div').filter(function(){return(this.getAttribute('data-value') == '", choice, "');}).each(function() {
$(this).tooltip('destroy');
$(this).tooltip(opts);
});
});
});
observer.observe(selectizeParent, { subtree: true, childList: true });
});
")))
htmltools::attachDependencies(bsTag, shinyBS:::shinyBSDep)
}
ui <- fluidPage(theme = shinytheme("superhero"), # shinythemes::themeSelector(), #
br(),
br(),
headerPanel(h2(" ", align = 'center')),
br(),
sidebarLayout(
sidebarPanel(
uiOutput("choose_prog"),
uiOutput("choose_name"),
br(),
selectizeTooltip(id="choose_name", choice = "group 1", title = "group 1 definition this is a long definition that does not really display well within the narrow text box", placement = "right", trigger = "hover"),
selectizeTooltip(id="choose_name", choice = "group 2", title = "group 2 definition this is another long definition. WHen group 1 and group 3 is is selected, you no longer see this definition", placement = "right", trigger = "hover"),
selectizeTooltip(id="choose_name", choice = "group 3", title = "group 3 definition this does not show if all of the other groups are selected ", placement = "right", trigger = "hover"),
),
mainPanel(
plotOutput("plot"),
)
)
)
server <- function(input, output) {
# Drop down selection to chose the program
output$choose_prog <- renderUI({
selectInput("program",
label = HTML('<FONT color="orange"><FONT size="4pt">Select a Program:'),
choices = c("A","B","C"))
})
# Drop down for name
output$choose_name <- renderUI({
# SelectInput works, but this only allows the selection of a SINGLE option
selectInput("names",
label = HTML('<FONT color="orange"><FONT size="4pt">Select user group of interest:'),
choices = c("group 1", "group 2", "group 3"),
multiple = T)
# multiInput("names",
# label = HTML('<FONT color="orange"><FONT size="4pt">Select user group of interest:'),
# choices = c("group 1", "group 2", "group 3"))
#
})
observeEvent(input$choose_name, {
updateSelectizeInput(session, "choose_name", choices = c("group 1", "group 2", "group 3"))
})
}
shinyApp(ui = ui, server = server)
像这样的东西?
library(shiny)
shinyApp(
ui = fluidPage(
br(),
selectizeInput(
"slctz", "Select something:",
choices = NULL,
options = list(
options = list(
list(label = "Choice 1", value = "value1", tooltip = "tooltip1"),
list(label = "Choice 2", value = "value2", tooltip = "tooltip2")
),
#items = list("Option 1"),
valueField = "value",
labelField = "label",
render = I("{
item: function(item, escape) {
return '<span>' + item.label + '</span>';
},
option: function(item, escape) {
return '<span title=\"' + item.tooltip + '\">' + item.label + '</span>';
}
}")
)
)
),
server = function(input, output) {}
)
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