[英]Alt text for a dropdown menu in shiny
If I'm using Microsoft word and I leave my mouse to hover over the font dropdown menu, this popup appears:如果我使用的是 Microsoft word,并且我将鼠标放在字体下拉菜单上的 hover 上,则会出现此弹出窗口:
It tells you the dropdown menu's name, what it's for and a shortcut to using it.它会告诉您下拉菜单的名称、用途以及使用它的快捷方式。
I have an Rshiny App with a dropdown menu, and I'd like to have a similar system to aid my users.我有一个带有下拉菜单的 Rshiny 应用程序,我希望有一个类似的系统来帮助我的用户。 How would I go about doing so?请问我go怎么办呢?
Here is some code to show where I'm starting from:这是一些代码来显示我从哪里开始:
library(shiny)
ui <- fixedPage(
# The alt-text would say "Choose from 3 options"
fixedRow(selectInput("drop", "Features", choices = c(1,2,3))))
shinyApp(ui, server = function(input, output) {})
How about this这个怎么样
library(shiny)
library(spsComps)
library(magrittr)
ui <- fixedPage(
# The alt-text would say "Choose from 3 options"
fixedRow(
# since the dropdown will expand the element height, place on top or bottom is not ideal.
column(
6,
# use `bsPopover` for full customization
selectInput("drop1", "Features", choices = c(1,2,3), width="50%") %>%
bsPopover("XX dropdown", "Choose from 3 options", "right")
),
column(
6,
# or the convenient function `bsPop` with preset colors
selectInput("drop2", "Features", choices = c(1,2,3), width="50%") %>%
bsPop("XX dropdown", "Choose from 3 options", "left", status = "primary")
)
)
)
shinyApp(ui, server = function(input, output) {})
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