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Add meta-viewer for metadata-based viewer assignment #502

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Add meta-viewer for metadata-based viewer assignment #502

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12 changes: 12 additions & 0 deletions src/nextjournal/clerk/viewer.cljc
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Original file line number Diff line number Diff line change
Expand Up @@ -868,6 +868,17 @@
(def mathjax-viewer
{:name `mathjax-viewer :render-fn 'nextjournal.clerk.render/render-mathjax :transform-fn mark-presented})

(def meta-viewer
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@sritchie sritchie May 31, 2023 •
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I am happy to add examples to the book, @mk .

Here's one:

image

{:name `meta-viewer
:pred (comp (some-fn fn? map?) :nextjournal.clerk/viewer meta)
:transform-fn
(update-val
(fn [v]
(let [viewer (-> v meta :nextjournal.clerk/viewer)]
(if (fn? viewer)
(viewer v)
(with-viewer viewer v)))))})

(defn ->opts [wrapped-value]
(select-keys wrapped-value [:nextjournal/budget :nextjournal/css-class :nextjournal/width :nextjournal/opts
:nextjournal/render-evaluator
Expand Down Expand Up @@ -1193,6 +1204,7 @@
elision-viewer
katex-viewer
mathjax-viewer
meta-viewer
html-viewer
plotly-viewer
vega-lite-viewer
Expand Down