From 346c837d77d23932d860fe8b4c794b3f6ba074fb Mon Sep 17 00:00:00 2001
From: Peter Feerick <5500713+pfeerick@users.noreply.github.com>
Date: Mon, 14 Sep 2026 17:43:40 +1000
Subject: [PATCH] fix(cpn): Application tab content disappearing when
 collapsing a section

PrefsAppPanel/PrefsProfilePanel/PrefsUpdatePanel wire every
AutoCollapsibleSection's animation-finished callback to
AbstractPanel::shrink(), which does adjustSize() followed by
resize(0, 0) to force a re-layout. That idiom is only safe for the
top-level QDialogs it was copied from elsewhere in Companion; these
panels are child widgets hosted in a QScrollArea, and forcing them to
(0, 0) can leave them stuck at zero size instead of being regrown by
the scroll area - blanking the whole tab, e.g. when collapsing "Radio
Profiles" on the Application tab while "General" is left expanded.

Give PrefsPanel its own non-destructive shrink() (updateGeometry())
that shadows AbstractPanel::shrink() for these scroll-area-hosted
panels.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MAYL7FYuZNTmb4sEaig3bN
---
 companion/src/prefsedit/prefs_panel.cpp | 7 +++++++
 companion/src/prefsedit/prefs_panel.h   | 1 +
 2 files changed, 8 insertions(+)

diff --git a/companion/src/prefsedit/prefs_panel.cpp b/companion/src/prefsedit/prefs_panel.cpp
index 926839162..8038cec72 100644
--- a/companion/src/prefsedit/prefs_panel.cpp
+++ b/companion/src/prefsedit/prefs_panel.cpp
@@ -59,6 +59,13 @@ void PrefsPanel::onRadioChanged(Firmware * firmware, bool deferUpdate)
     update();
 }
 
+void PrefsPanel::shrink()
+{
+  // resize(0,0) (AbstractPanel::shrink()) assumes a top-level widget; here the
+  // panel lives in a QScrollArea and can get stuck at zero size instead.
+  updateGeometry();
+}
+
 /*
     PrefsScrollArea
 */
diff --git a/companion/src/prefsedit/prefs_panel.h b/companion/src/prefsedit/prefs_panel.h
index 19c4c86fe..bc263678a 100644
--- a/companion/src/prefsedit/prefs_panel.h
+++ b/companion/src/prefsedit/prefs_panel.h
@@ -61,6 +61,7 @@ class PrefsPanel : public AbstractPanel
 
     AutoLineEdit * newPathWidget(QWidget * parent);
     void setPathWidget(AutoLineEdit * wgt);
+    void shrink();
 
 };