File 0001-2-more-QAbstractItemModelTester-fixes.patch of Package gammaray

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File 0001-2-more-QAbstractItemModelTester-fixes.patch of Package gammaray (Revision a9df3f1ef560ef521651fa31499849c5)

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From f7bf40db5cd70972ca0597d096ca67c5a0b2a7b9 Mon Sep 17 00:00:00 2001
From: David Faure <faure@kde.org>
Date: Fri, 10 Nov 2023 11:29:43 +0100
Subject: [PATCH] 2 more QAbstractItemModelTester fixes

- RemoteModel: parent(invalid) should be invalid
- Delay restoring the QHeaderView until fully finishing the current
  change

Otherwise we got a "ChangeInFlight" assert because QHeaderView
ends up calling QSFPM::sort() which emits layoutAboutToBeChanged,
but the model tester hasn't seen the columnsInserted signal yet,
when QHeaderView got it first.

(cherry picked from commit 048b0493bd4e21f0d55bdd78468bd1cdaa016131)
---
 client/remotemodel.cpp | 4 +++-
 ui/uistatemanager.cpp  | 6 +++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/client/remotemodel.cpp b/client/remotemodel.cpp
index dc51a8366..9e0ff3ba9 100644
--- a/client/remotemodel.cpp
+++ b/client/remotemodel.cpp
@@ -136,6 +136,8 @@ QModelIndex RemoteModel::index(int row, int column, const QModelIndex &parent) c
 
 QModelIndex RemoteModel::parent(const QModelIndex &index) const
 {
+    if (!index.isValid())
+        return {};
     Node *currentNode = nodeForIndex(index);
     Q_ASSERT(currentNode);
     if (currentNode == m_root || currentNode->parent == m_root)
@@ -158,7 +160,7 @@ int RemoteModel::rowCount(const QModelIndex &index) const
         if (node->columnCount < 0) // not yet requested vs. in the middle of insertion
             requestRowColumnCount(index);
     }
-    return qMax(0, node->rowCount); // if requestRowColumnCount is synchronoous, ie. changes rowCount (as in simple unit test), returning 0 above would cause ModelTest to see inconsistent data
+    return qMax(0, node->rowCount); // if requestRowColumnCount is synchronous, ie. changes rowCount (as in simple unit test), returning 0 above would cause ModelTest to see inconsistent data
 }
 
 int RemoteModel::columnCount(const QModelIndex &index) const
diff --git a/ui/uistatemanager.cpp b/ui/uistatemanager.cpp
index 07c12ae91..988b6b18e 100644
--- a/ui/uistatemanager.cpp
+++ b/ui/uistatemanager.cpp
@@ -555,7 +555,11 @@ void UIStateManager::saveHeaderState(QHeaderView *header)
 
 void UIStateManager::headerSectionCountChanged()
 {
-    restoreHeaderState(qobject_cast<QHeaderView *>(sender()));
+    auto headerView = qobject_cast<QHeaderView *>(sender());
+    // Delay the call to restoreHeaderState to avoid multiple changes in flight at the QAIM level
+    // E.g. we might be here because of columnsInserted() (which just finished, but not all receivers were told yet)
+    // and restoring will sort() the model, which will emit layoutChanged(). Separate the two so QAbstractItemModelTester doesn't abort.
+    QMetaObject::invokeMethod(this, "restoreHeaderState", Qt::QueuedConnection, Q_ARG(QHeaderView *, headerView));
 }
 
 void UIStateManager::widgetResized(QWidget *widget)
-- 
2.44.0

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