From 5a589c4b1d3ebbd07ac69be43017c1fa149c6b4d Mon Sep 17 00:00:00 2001
From: Smit Barmase <heysmitbarmase@gmail.com>
Date: Mon, 20 Apr 2026 21:30:25 +0530
Subject: [PATCH] markdown_preview: Fix outline panel becoming empty when
 preview pane is focused (#54301)

Closes #52663

Release Notes:

- Fixed outline panel becoming empty when switching focus to a Markdown
Preview pane.
---
 .../src/markdown_preview_view.rs               | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/crates/markdown_preview/src/markdown_preview_view.rs b/crates/markdown_preview/src/markdown_preview_view.rs
index b97a559edf8760084586218a5b39e677c49727f5..c95d4480121b5aa74519e266b89105e416cc86c5 100644
--- a/crates/markdown_preview/src/markdown_preview_view.rs
+++ b/crates/markdown_preview/src/markdown_preview_view.rs
@@ -1,3 +1,4 @@
+use std::any::TypeId;
 use std::cmp::min;
 use std::ops::Range;
 use std::path::{Path, PathBuf};
@@ -824,6 +825,23 @@ impl EventEmitter<SearchEvent> for MarkdownPreviewView {}
 impl Item for MarkdownPreviewView {
     type Event = ();
 
+    fn act_as_type<'a>(
+        &'a self,
+        type_id: TypeId,
+        self_handle: &'a Entity<Self>,
+        _: &'a App,
+    ) -> Option<gpui::AnyEntity> {
+        if type_id == TypeId::of::<Self>() {
+            Some(self_handle.clone().into())
+        } else if type_id == TypeId::of::<Editor>() {
+            self.active_editor
+                .as_ref()
+                .map(|state| state.editor.clone().into())
+        } else {
+            None
+        }
+    }
+
     fn tab_icon(&self, _window: &Window, _cx: &App) -> Option<Icon> {
         Some(Icon::new(IconName::FileDoc))
     }