Could we set a timed refresh for an iframe or tiddler being viewed?

#1

I have a Published google document embedded in a tiddlywiki

<iframe style="width: 100%; height: 80vh;" src="https://docs.google.com/document/d/e/2PACX-1vS-tWnWyKzRAyAUT-IkR12Iw8VYqfPYLCGKyofsQIJa_WqCLKu73ZjRj5Z1DydTagCKklV-vmbchxNv/pub?embedded=true"></iframe>

When you make changes to the underlying document the changes are published within 5 minutes. This is fine for most applications. As it will “refresh” when you open the tiddler containing the iframe.

Except when you are writing and embedding documents

  • Google suggests using a meta tag inside the iframe tag
    • <meta http-equiv="refresh" content="300">
  • However this is not refreshing as advertised.

Is there a way to address this?

  • I Imagin tiddlywiki may be sanitising this or some other factor.
  • Alternatively can we get tiddlywiki to do a timed refresh on our own tiddler.
#2

here a js macro to do this

(function(){

/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";

/*
Information about this macro
*/

exports.name = "freshiframe";

exports.params = [
	{name: "url"}
];

/*
Run the macro
*/
exports.run = function(url) {
   var text = `<!DOCTYPE html>
<html lang="en">
  <head>
    <meta http-equiv="refresh" content="5">
  </head>
  <body>
   <iframe src=${url} frameborder="0"></iframe>
  </body>
</html>`
	return "data:text/html;charset=utf-8," + encodeURIComponent(text);
};

})();

remember to set module-type to macro and type to application/javascript

call it like this

<iframe src=<<freshiframe "https://docs.google.com/document/d/e/2PACX-1vS-tWnWyKzRAyAUT-IkR12Iw8VYqfPYLCGKyofsQIJa_WqCLKu73ZjRj5Z1DydTagCKklV-vmbchxNv/pub?embedded=true">> frameborder="0"/>

2 Likes
#3

Thanks @buggyj I will check it out.

Is this the seconds before refresh?, I can make it minutes.

#4

Great. Could you turn the seconds to refresh into a param that can be changed?

#5

one without the js

\define refreshdoctmpl(url,period)
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta http-equiv="refresh" content="$period$">
  </head>
  <body>
   <iframe src=$url$ frameborder="0"></iframe>
  </body>
</html>
\end

\define refreshiframe(url)
<iframe src=<<makedatauri """$url$""" "text/html">> frameborder="0"/>
\end

<$vars x=<<refreshdoctmpl "https://docs.google.com/document/d/e/2PACX-1vS-tWnWyKzRAyAUT-IkR12Iw8VYqfPYLCGKyofsQIJa_WqCLKu73ZjRj5Z1DydTagCKklV-vmbchxNv/pub?embedded=true" "15">>>


<$macrocall $name="refreshiframe" url=<<x>>/>

</$vars>
4 Likes
#6

Thanks @buggyj
In the wiki I tested it in I had quit a small frame , and adding height and width did not help.
I would like to scale the frame by dragging. Is something like that possible.

#7 
\define refreshdoctmpl(url,period)
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta http-equiv="refresh" content="$period$">
  </head>
  <body>
   <iframe src=$url$ frameborder="0" width="100%" height="1000px"></iframe>
  </body>
</html>
\end

\define refreshiframe(url)
<iframe src=<<makedatauri """$url$""" "text/html">> frameborder="0" width="100%" height="1000px">
\end

<$vars x=<<refreshdoctmpl "https://tiddlywiki.com/" "15">>>

<div style="height:1000px">
<$macrocall $name="refreshiframe" url=<<x>>/>
2 Likes
#8

Thanks @buggyj
I added an extra macro-step to be able to use it with a shorter spell,
perhaps we could also add the heigt to this an add something to remove at least one of the nested scrollbars

\define refreshdoctmpl(url,period)
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta http-equiv="refresh" content="$period$">
  </head>
  <body>
   <iframe src=$url$ frameborder="0" width="100%" height="1000px"></iframe>
  </body>
</html>
\end
\define refreshiframe(url)
<iframe src=<<makedatauri """$url$""" "text/html">> frameborder="0" width="100%" height="1000px">
\end
\define reframe(url, time:"60")
<$vars x=<<refreshdoctmpl "$url$" "$time$">>>

<div style="height:1020px">

<$macrocall $name="refreshiframe" url=<<x>>/>
</div>
</vars>
\end

<<reframe "https://example.com/" "10">>