https://github.com/r4fun/keys

:keyboard: Keyboard Shortcuts for 'shiny'
https://github.com/r4fun/keys

hacktoberfest hotkeys keyboard-shortcuts mousetrap rstats

Last synced: 3 months ago
JSON representation

:keyboard: Keyboard Shortcuts for 'shiny'

• Host: GitHub
• URL: https://github.com/r4fun/keys
• Owner: r4fun
• License: other
• Created: 2020-10-03T19:41:21.000Z (about 4 years ago)
• Default Branch: master
• Last Pushed: 2022-01-16T22:39:35.000Z (almost 3 years ago)
• Last Synced: 2024-05-14T10:31:45.412Z (6 months ago)
• Topics: hacktoberfest, hotkeys, keyboard-shortcuts, mousetrap, rstats
• Language: R
• Homepage: https://r4fun.github.io/keys/
• Size: 269 KB
• Stars: 44
• Watchers: 2
• Forks: 5
• Open Issues: 2
• Metadata Files:
  • Readme: README.Rmd
  • License: LICENSE.md

Awesome Lists containing this project

• awesome-shiny-extensions - keys - Assign and listen to keyboard shortcuts in Shiny using the Mousetrap JavaScript library. (UI Components / Advanced Interactivity)
• jimsghstars - r4fun/keys - :keyboard: Keyboard Shortcuts for 'shiny' (R)

README

        
---

output: github_document

---

```{r, include = FALSE}

knitr::opts_chunk$set(

  collapse = TRUE,

  comment = "#>",

  fig.path = "man/figures/README-",

  out.width = "100%"

)

```

# keys 

[![R build status](https://github.com/r4fun/keys/workflows/R-CMD-check/badge.svg)](https://github.com/r4fun/keys/actions)

[![CRAN status](https://www.r-pkg.org/badges/version/keys)](https://CRAN.R-project.org/package=keys)

[![CRAN_Download_Badge](https://cranlogs.r-pkg.org/badges/keys)](https://cran.r-project.org/package=keys)

[![Conda Version](https://img.shields.io/conda/vn/conda-forge/r-keys.svg)](https://anaconda.org/conda-forge/r-keys)

The goal of `keys` is to add hotkeys to shiny applications using [`Mousetrap`](https://github.com/ccampbell/mousetrap). With `keys`, you can:

* Assign hotkeys on app load

* Add and remove hotkeys from server

* Pause and unpause hotkeys from server

* Record keys from server

## Installation

Install the released version of `keys` from CRAN:

```{r, eval=FALSE}

install.packages("keys")

```

Or install the development version from GitHub with:

```r

# install.packages("devtools")

devtools::install_github("r4fun/keys")

```

You can also install `keys` with `conda-forge`. More information here: https://github.com/conda-forge/r-keys-feedstock

## Usage

To use `keys`, start by adding a dependency to it using `useKeys()`.

Then, you can add a `keysInput` to the UI:

```r

library(shiny)

library(keys)

hotkeys <- c(

  "1", 

  "command+shift+k", 

  "up up down down left right left right b a enter"

)

ui <- fluidPage(

  useKeys(),

  keysInput("keys", hotkeys)

)

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

  observeEvent(input$keys, {

    print(input$keys)

  })

}

shinyApp(ui, server)

```

You can add binding after application launch using `addKeys`.

```r

library(shiny)

library(keys)

ui <- fluidPage(

  useKeys(),

  actionButton("add", "Add keybinding")

)

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

  observeEvent(input$add, {

    addKeys("keys", c("a", "b", "c"))

  })

  observeEvent(input$keys, {

    print(input$keys)

  })

}

shinyApp(ui, server)

```

Bindings can be removed after application launch using `removeKey`.

```r

library(shiny)

library(keys)

ui <- fluidPage(

  useKeys(),

  keysInput("keys", c("a", "b", "c")),

  actionButton("rm", "Remove `a` keybinding")

)

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

  observeEvent(input$rm, {

    removeKeys("a")

  })

  observeEvent(input$keys, {

    print(input$keys)

  })

}

shinyApp(ui, server)

```

For more information about what types of hotkeys you can use, please take a look at the mousetrap github [repository](https://github.com/ccampbell/mousetrap).

## Acknowledgements

All credit goes to [Craig Campbell](https://github.com/ccampbell) who is the author of [`Mousetrap`](https://github.com/ccampbell/mousetrap).