From 473efbed32f490d50600e4f26c171834b84ffd63 Mon Sep 17 00:00:00 2001
From: Dmitry Drobotov <dmitry.drobotov@jetbrains.com>
Date: Mon, 9 Dec 2024 13:43:08 +0100
Subject: [PATCH] IJPL-172840 Use Tree's suspend expand/collapse accessibility
 announcements API in the Structure tree

This fixes a crash when opening the File Structure popup in very large files (JBR-7655)


(cherry picked from commit 9f497ecbf584fe8596630ab86245a0835a6eb3f4)

IJ-CR-151182

GitOrigin-RevId: 243ba2314b173347983aeea2299efdede60b2baa
---
 .../newStructureView/StructureViewComponent.java     | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/platform/lang-impl/src/com/intellij/ide/structureView/newStructureView/StructureViewComponent.java b/platform/lang-impl/src/com/intellij/ide/structureView/newStructureView/StructureViewComponent.java
index 3ccf34ea77c8..b60059b7debd 100644
--- a/platform/lang-impl/src/com/intellij/ide/structureView/newStructureView/StructureViewComponent.java
+++ b/platform/lang-impl/src/com/intellij/ide/structureView/newStructureView/StructureViewComponent.java
@@ -1162,7 +1162,17 @@ public class StructureViewComponent extends SimpleToolWindowPanel implements Tre
     void expandLater(@NotNull TreePath parentPath, @NotNull Object o) {
       ApplicationManager.getApplication().invokeLater(() -> {
         if (!tree.isVisible(parentPath) || !tree.isExpanded(parentPath)) return;
-        tree.expandPath(parentPath.pathByAddingChild(o));
+        try {
+          if (tree instanceof Tree jbTree) {
+            jbTree.suspendExpandCollapseAccessibilityAnnouncements();
+          }
+          tree.expandPath(parentPath.pathByAddingChild(o));
+        }
+        finally {
+          if (tree instanceof Tree jbTree) {
+            jbTree.resumeExpandCollapseAccessibilityAnnouncements();
+          }
+        }
       });
     }