From 997a3e766d409a3ede44820040c440b475f0ad09 Mon Sep 17 00:00:00 2001
From: CptPotato <3957610+CptPotato@users.noreply.github.com>
Date: Sun, 13 Feb 2022 16:35:32 +0100
Subject: [PATCH] remove markdown theme scopes in ui

---
 helix-term/src/commands.rs      |  3 +-
 helix-term/src/ui/completion.rs |  8 ++---
 helix-term/src/ui/markdown.rs   | 53 +++++++++++++--------------------
 3 files changed, 25 insertions(+), 39 deletions(-)

diff --git a/helix-term/src/commands.rs b/helix-term/src/commands.rs
index 6bc2b9b6c29b0..60709d0563a8a 100644
--- a/helix-term/src/commands.rs
+++ b/helix-term/src/commands.rs
@@ -5459,8 +5459,7 @@ fn hover(cx: &mut Context) {
 
                 // skip if contents empty
 
-                let contents =
-                    ui::Markdown::new(contents, editor.syn_loader.clone()).style_group("hover");
+                let contents = ui::Markdown::new(contents, editor.syn_loader.clone());
                 let popup = Popup::new("hover", contents);
                 if let Some(doc_popup) = compositor.find_id("hover") {
                     *doc_popup = popup;
diff --git a/helix-term/src/ui/completion.rs b/helix-term/src/ui/completion.rs
index 35afe81e9ca47..d3b618a915aba 100644
--- a/helix-term/src/ui/completion.rs
+++ b/helix-term/src/ui/completion.rs
@@ -305,8 +305,6 @@ impl Component for Completion {
             let coords = helix_core::visual_coords_at_pos(text, cursor_pos, doc.tab_width());
             let cursor_pos = (coords.row - view.offset.row) as u16;
 
-            let markdown_ui =
-                |content, syn_loader| Markdown::new(content, syn_loader).style_group("completion");
             let mut markdown_doc = match &option.documentation {
                 Some(lsp::Documentation::String(contents))
                 | Some(lsp::Documentation::MarkupContent(lsp::MarkupContent {
@@ -314,7 +312,7 @@ impl Component for Completion {
                     value: contents,
                 })) => {
                     // TODO: convert to wrapped text
-                    markdown_ui(
+                    Markdown::new(
                         format!(
                             "```{}\n{}\n```\n{}",
                             language,
@@ -329,7 +327,7 @@ impl Component for Completion {
                     value: contents,
                 })) => {
                     // TODO: set language based on doc scope
-                    markdown_ui(
+                    Markdown::new(
                         format!(
                             "```{}\n{}\n```\n{}",
                             language,
@@ -343,7 +341,7 @@ impl Component for Completion {
                     // TODO: copied from above
 
                     // TODO: set language based on doc scope
-                    markdown_ui(
+                    Markdown::new(
                         format!(
                             "```{}\n{}\n```",
                             language,
diff --git a/helix-term/src/ui/markdown.rs b/helix-term/src/ui/markdown.rs
index 68fc3555e7d05..ec5d69937e420 100644
--- a/helix-term/src/ui/markdown.rs
+++ b/helix-term/src/ui/markdown.rs
@@ -21,40 +21,29 @@ pub struct Markdown {
     contents: String,
 
     config_loader: Arc<syntax::Loader>,
-
-    text_style: String,
-    block_style: String,
-    heading_styles: [String; 6],
 }
 
 // TODO: pre-render and self reference via Pin
 // better yet, just use Tendril + subtendril for references
 
 impl Markdown {
+    // theme keys, including fallbacks
+    const TEXT_STYLE: [&'static str; 2] = ["markup.normal", "markup"];
+    const BLOCK_STYLE: [&'static str; 3] = ["markup.raw.inline", "markup.raw", "markup"];
+    const HEADING_STYLES: [[&'static str; 3]; 6] = [
+        ["markup.heading.1", "markup.heading", "markup"],
+        ["markup.heading.2", "markup.heading", "markup"],
+        ["markup.heading.3", "markup.heading", "markup"],
+        ["markup.heading.4", "markup.heading", "markup"],
+        ["markup.heading.5", "markup.heading", "markup"],
+        ["markup.heading.6", "markup.heading", "markup"],
+    ];
+
     pub fn new(contents: String, config_loader: Arc<syntax::Loader>) -> Self {
         Self {
             contents,
             config_loader,
-            text_style: "markup.normal".into(),
-            block_style: "markup.raw.inline".into(),
-            heading_styles: [
-                "markup.heading.1".into(),
-                "markup.heading.2".into(),
-                "markup.heading.3".into(),
-                "markup.heading.4".into(),
-                "markup.heading.5".into(),
-                "markup.heading.6".into(),
-            ],
-        }
-    }
-
-    pub fn style_group(mut self, suffix: &str) -> Self {
-        self.text_style = format!("markup.normal.{}", suffix);
-        self.block_style = format!("markup.raw.inline.{}", suffix);
-        for i in 0..self.heading_styles.len() {
-            self.heading_styles[i] = format!("markup.heading.{}.{}", i + 1, suffix);
         }
-        self
     }
 
     fn parse(&self, theme: Option<&Theme>) -> tui::text::Text<'_> {
@@ -79,16 +68,16 @@ impl Markdown {
             })
         }
 
-        let get_theme = |key: &str| {
-            theme
-                .map(|theme| theme.try_get(key))
-                .flatten()
-                .unwrap_or_default()
+        let get_theme = |keys: &[&str]| match theme {
+            Some(theme) => keys
+                .iter()
+                .find_map(|key| theme.try_get(key))
+                .unwrap_or_default(),
+            None => Default::default(),
         };
-        let text_style = get_theme(&self.text_style);
-        let code_style = get_theme(&self.block_style);
-        let heading_styles: Vec<Style> = self
-            .heading_styles
+        let text_style = get_theme(&Self::TEXT_STYLE);
+        let code_style = get_theme(&Self::BLOCK_STYLE);
+        let heading_styles: Vec<Style> = Self::HEADING_STYLES
             .iter()
             .map(|key| get_theme(key))
             .collect();