use CSS to hide elements on certain themes

src/book/init.rs

@@ -143,6 +143,9 @@ impl BookBuilder {
         let mut variables_css = File::create(cssdir.join("variables.css"))?;
         variables_css.write_all(theme::VARIABLES_CSS)?;
 
+        let mut excludes_css = File::create(cssdir.join("exclude.css"))?;
+        excludes_css.write_all(theme::EXCLUDES_CSS)?;
+
         let mut favicon = File::create(themedir.join("favicon.png"))?;
         favicon.write_all(theme::FAVICON_PNG)?;
 

src/renderer/html_handlebars/hbs_renderer.rs

@@ -229,6 +229,7 @@ impl HtmlHandlebars {
             write_file(destination, "css/print.css", &theme.print_css)?;
         }
         write_file(destination, "css/variables.css", &theme.variables_css)?;
+        write_file(destination, "css/exclude.css", &theme.excludes_css)?;
         if let Some(contents) = &theme.favicon_png {
             write_file(destination, "favicon.png", contents)?;
         }

src/theme/css/exclude.css

@@ -0,0 +1,23 @@
+.light .no-light {
+    visibility: hidden;
+}
+
+.rust .no-rust {
+    visibility: hidden;
+}
+
+.navy .no-navy {
+    visibility: hidden;
+}
+
+.ayu .no-ayu {
+    visibility: hidden;
+}
+
+.coal .no-coal {
+    visibility: hidden;
+}
+
+.navy, .ayu, .coal  .no-dark {
+    visibility: hidden;
+}

src/theme/mod.rs

@@ -21,6 +21,7 @@ pub static CHROME_CSS: &[u8] = include_bytes!("css/chrome.css");
 pub static GENERAL_CSS: &[u8] = include_bytes!("css/general.css");
 pub static PRINT_CSS: &[u8] = include_bytes!("css/print.css");
 pub static VARIABLES_CSS: &[u8] = include_bytes!("css/variables.css");
+pub static EXCLUDES_CSS: &[u8] = include_bytes!("css/exclude.css");
 pub static FAVICON_PNG: &[u8] = include_bytes!("favicon.png");
 pub static FAVICON_SVG: &[u8] = include_bytes!("favicon.svg");
 pub static JS: &[u8] = include_bytes!("book.js");
@@ -54,6 +55,7 @@ pub struct Theme {
     pub general_css: Vec<u8>,
     pub print_css: Vec<u8>,
     pub variables_css: Vec<u8>,
+    pub excludes_css: Vec<u8>,
     pub favicon_png: Option<Vec<u8>>,
     pub favicon_svg: Option<Vec<u8>>,
     pub js: Vec<u8>,
@@ -91,6 +93,7 @@ impl Theme {
                     theme_dir.join("css/variables.css"),
                     &mut theme.variables_css,
                 ),
+                (theme_dir.join("css/exclude.css"), &mut theme.excludes_css),
                 (theme_dir.join("highlight.js"), &mut theme.highlight_js),
                 (theme_dir.join("clipboard.min.js"), &mut theme.clipboard_js),
                 (theme_dir.join("highlight.css"), &mut theme.highlight_css),
@@ -153,6 +156,7 @@ impl Default for Theme {
             general_css: GENERAL_CSS.to_owned(),
             print_css: PRINT_CSS.to_owned(),
             variables_css: VARIABLES_CSS.to_owned(),
+            excludes_css: EXCLUDES_CSS.to_owned(),
             favicon_png: Some(FAVICON_PNG.to_owned()),
             favicon_svg: Some(FAVICON_SVG.to_owned()),
             js: JS.to_owned(),
@@ -213,6 +217,7 @@ mod tests {
             "css/general.css",
             "css/print.css",
             "css/variables.css",
+            "css/exclude.css",
             "book.js",
             "highlight.js",
             "tomorrow-night.css",
@@ -240,6 +245,7 @@ mod tests {
             general_css: Vec::new(),
             print_css: Vec::new(),
             variables_css: Vec::new(),
+            excludes_css: Vec::new(),
             favicon_png: Some(Vec::new()),
             favicon_svg: Some(Vec::new()),
             js: Vec::new(),

tests/init.rs

@@ -119,6 +119,7 @@ fn copy_theme() {
         "css/general.css",
         "css/print.css",
         "css/variables.css",
+        "css/exclude.css",
         "favicon.png",
         "favicon.svg",
         "highlight.css",