feat: allow .subplot to list CSS files to embed in HTML output

This is in the meta data field "css_embed".

Signed-off-by: Lars Wirzenius <liw@liw.fi>
Sponsored-by: author

1 files changed, 45 insertions, 0 deletions

diff --git a/subplot.md b/subplot.md
index 06e9e38..6532614 100644
--- a/subplot.md
+++ b/subplot.md
@@ -3639,6 +3639,51 @@ markdowns:
 ~~~
 ~~~~~~
 
+## HTML output
+
+### Embedded CSS
+
+_Requirement:_ The user can specify CSS files to embed in the HTML
+output.
+
+Justification: We want to allow production of self-standing output
+with user-defined styling.
+
+~~~scenario
+given file embedded-css.subplot
+given file embedded-css.md
+given file embedded-css.css
+given file b.yaml
+given an installed subplot
+when I run subplot docgen embedded-css.subplot -o foo.html
+then file foo.html contains "silly: property;"
+~~~
+
+~~~{#embedded-css.subplot .file .yaml .numberLines}
+title: Embedded CSS
+markdowns:
+  - embedded-css.md
+bindings:
+  - b.yaml
+css_embed:
+ - embedded-css.css
+~~~
+
+~~~~~~{#embedded-css.md .file .markdown .numberLines}
+# This is a title
+
+~~~scenario
+given precondition
+~~~
+~~~~~~
+
+~~~{#embedded-css.css .file .css .numberLines}
+html {
+    silly: property;
+}
+~~~
+
+
 ## Running Subplot
 
 The scenarios in this section verify that the Subplot tool can be run