From dc271894cbf69f4ffdcc8b77de06c3e7aa6b56ed Mon Sep 17 00:00:00 2001
From: Vladimir Kharitonov <Vladimir.Kharitonov@jetbrains.com>
Date: Tue, 14 Oct 2025 14:48:44 +0200
Subject: [PATCH] IJPL-190637 MarkdownPreviewFileEditor: trace getting and
 setting HTML

GitOrigin-RevId: a3d44625799cebb846a066b907f46a579fe75155
---
 .../markdown/ui/preview/MarkdownPreviewFileEditor.kt | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/plugins/markdown/core/src/org/intellij/plugins/markdown/ui/preview/MarkdownPreviewFileEditor.kt b/plugins/markdown/core/src/org/intellij/plugins/markdown/ui/preview/MarkdownPreviewFileEditor.kt
index 2000abb1c902..e16b977c65fa 100644
--- a/plugins/markdown/core/src/org/intellij/plugins/markdown/ui/preview/MarkdownPreviewFileEditor.kt
+++ b/plugins/markdown/core/src/org/intellij/plugins/markdown/ui/preview/MarkdownPreviewFileEditor.kt
@@ -233,14 +233,22 @@ class MarkdownPreviewFileEditor(
     val settings = MarkdownSettings.getInstance(project)
     val textPreprocessor = retrievePanelProvider(settings).sourceTextPreprocessor
     lastRenderedHtml = readAction {
-      textPreprocessor.preprocessText(project, document, file)
+      val text = textPreprocessor.preprocessText(project, document, file)
+      logger.info("MarkdownPreviewFileEditor: readAction finished")
+      text
+    }
+
+    val editor = mainEditor.firstOrNull() ?: run {
+      logger.warn("MarkdownPreviewFileEditor: editor is null, cannot update preview")
+      return
     }
 
-    val editor = mainEditor.firstOrNull() ?: return
     writeIntentReadAction {
       val offset = editor.caretModel.offset
       val line = editor.document.getLineNumber(offset)
+      logger.info("MarkdownPreviewFileEditor: setHtml length: ${lastRenderedHtml.length}, offset: $offset, line: $line")
       panel.setHtml(lastRenderedHtml, offset, line, file)
+      logger.info("MarkdownPreviewFileEditor: setHtml finished")
     }
   }