将onclick open hyperlink事件添加到在R中创建的html小部件 [英] Add onclick open hyperlink event to an html widget created in R

问题描述

我希望能够像这样做的答案没有使用闪亮。我还想绑定打开与数据点关联的超链接的onclick事件。

I would like to be able to do something like the answer of this but without using shiny. I also want to bind onclick events which open a hyperlink associated with the data point.

我正在使用 saveWidget 函数来自 htmlwidgets 并知道我可以从 htmltools中插入带有 appendContent 函数的javascript代码
包。

I am using the saveWidget function from htmlwidgets and know that I can insert javascript code with the appendContent function from the htmltools package.

这是一个小样本代码：

library(ggplot2)
library(plotly)
library(htmlwidgets)
library(htmltools)

path.test.results <- "C:\\Users\\img\\"

myData <- data.frame(x=c(1,2,3), y=c(3,2,1))
myLinks <- c("https://www.google.com/", "https://stackoverflow.com/", "https://www.r-project.org/")

ggp <- ggplot(data=myData, aes(x=x, y=y)) + geom_point()
ply <- plotly_build(ggp)

ply$elementId <- "PlotlyGraph"

#javascript <- HTML('<script>document.getElementById("htmlwidget_container").innerHTML = "test";</script>')
javascript <- HTML(paste(
        paste('<button type="button" onclick="document.getElementById(',"'", 'PlotlyGraph', "'", ').style.display=',
                "'", 'none', "'", '">Hide Plot</button>', sep=''),
        paste('<button type="button" onclick="document.getElementById(',"'", 'PlotlyGraph', "'", ').style.display=',
                "'", 'block', "'", '">Show Plot</button>', sep='')
        ,sep=''))

ply <- appendContent(ply, javascript)

saveWidget(widget=ply, file=paste(path.test.results, "test.html", sep=""), selfcontained = FALSE)
dev.off()

现在很明显我正在寻求帮助以正确的java脚本代码保存在'javascript'变量，然后我可以将其与appendContent集成到html小部件中。

Now obviously I am asking for help for the correct java script code to save in the 'javascript' variable which I then could integrate with appendContent into the html widget.

推荐答案

On e方式是

• 通过 onStaticRenderComplete 添加Javascript代码以执行一旦情节呈现


• Javascript事件是对找到的示例的简单修改这里


• 网址是通过 window.open

• add the Javascript code via onStaticRenderComplete in order to execute it once the plot is rendered
• the Javascript event is a simple modification of the example found here
• the URL is opened via window.open

对于具有不同痕迹的一般解决方案，请参阅：点击ggplot / plotly图表打开超链接

For a general solution with different traces, see: Open hyperlink on click on an ggplot/plotly chart

完整代码

library(ggplot2)
library(plotly)
library(htmlwidgets)
library(htmltools)

path.test.results <- "C:\\Users\\img\\"

myData <- data.frame(x=c(1,2,3), y=c(3,2,1), urls=c("https://www.google.com/", "http://stackoverflow.com/", "https://www.r-project.org/"))
myLinks <- c("https://www.google.com/", "http://stackoverflow.com/", "https://www.r-project.org/")

ggp <- ggplot(data=myData, aes(x=x, y=y)) + geom_point()
ply <- plotly_build(ggp)

ply$elementId <- "PlotlyGraph"

html <- HTML(paste(
  paste('<button type="button" onclick="document.getElementById(',"'", 'PlotlyGraph', "'", ').style.display=',
        "'", 'none', "'", '">Hide Plot</button>', sep=''),
  paste('<button type="button" onclick="document.getElementById(',"'", 'PlotlyGraph', "'", ').style.display=',
        "'", 'block', "'", '">Show Plot</button>', sep='')
  ,sep=''))

javascript <- HTML(paste("var myPlot = document.getElementById('PlotlyGraph');
myPlot.on('plotly_click', function(data){
var urls = ['", paste(myLinks, collapse = "', '"), "'];
window.open(urls[data.points[0].pointNumber],'_blank');
});", sep=''))

ply <- prependContent(ply, html)
ply <- prependContent(ply, onStaticRenderComplete(javascript))

saveWidget(widget=ply, file=paste(path.test.results, "test.html", sep=""), selfcontained = FALSE)

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