Add a version-control statusline element (#5682)

2 files changed, 20 insertions, 0 deletions

diff --git a/helix-view/src/document.rs b/helix-view/src/document.rs
index db12fb92..b2a9ddec 100644
--- a/helix-view/src/document.rs
+++ b/helix-view/src/document.rs
@@ -1,5 +1,6 @@
 use anyhow::{anyhow, bail, Context, Error};
 use arc_swap::access::DynAccess;
+use arc_swap::ArcSwap;
 use futures_util::future::BoxFuture;
 use futures_util::FutureExt;
 use helix_core::auto_pairs::AutoPairs;
@@ -158,6 +159,7 @@ pub struct Document {
     language_server: Option<Arc<helix_lsp::Client>>,
 
     diff_handle: Option<DiffHandle>,
+    version_control_head: Option<Arc<ArcSwap<Box<str>>>>,
 }
 
 use std::{fmt, mem};
@@ -404,6 +406,7 @@ impl Document {
             language_server: None,
             diff_handle: None,
             config,
+            version_control_head: None,
         }
     }
     pub fn default(config: Arc<dyn DynAccess<Config>>) -> Self {
@@ -707,6 +710,8 @@ impl Document {
             None => self.diff_handle = None,
         }
 
+        self.version_control_head = provider_registry.get_current_head_name(&path);
+
         Ok(())
     }
 
@@ -1158,6 +1163,17 @@ impl Document {
         }
     }
 
+    pub fn version_control_head(&self) -> Option<Arc<Box<str>>> {
+        self.version_control_head.as_ref().map(|a| a.load_full())
+    }
+
+    pub fn set_version_control_head(
+        &mut self,
+        version_control_head: Option<Arc<ArcSwap<Box<str>>>>,
+    ) {
+        self.version_control_head = version_control_head;
+    }
+
     #[inline]
     /// Tree-sitter AST tree
     pub fn syntax(&self) -> Option<&Syntax> {
diff --git a/helix-view/src/editor.rs b/helix-view/src/editor.rs
index 1b4664ff..41aa707f 100644
--- a/helix-view/src/editor.rs
+++ b/helix-view/src/editor.rs
@@ -467,6 +467,9 @@ pub enum StatusLineElement {
 
     /// A single space
     Spacer,
+
+    /// Current version control information
+    VersionControl,
 }
 
 // Cursor shape is read and used on every rendered frame and so needs
@@ -1297,6 +1300,7 @@ impl Editor {
             if let Some(diff_base) = self.diff_providers.get_diff_base(&path) {
                 doc.set_diff_base(diff_base, self.redraw_handle.clone());
             }
+            doc.set_version_control_head(self.diff_providers.get_current_head_name(&path));
 
             let id = self.new_document(doc);
             let _ = self.launch_language_server(id);