Some launcher fixes

I tried to fix https://gitlab.com/OpenMW/openmw/-/issues/8080 by making it so that instead of crashing, we showed an error.

In doing so, I discovered some problems with plugin sorting and the refresh button, like:
* it forgetting the non-user content files somewhere
* nothing guaranteeing that built-in content files stay at the top of the list and them only being there because the first data directory that provides them is usually the first data directory
* it forgetting the non-user content files somewhere else
* it looking like it'd forget any kind of non-user setting under certain circumstances

I fixed those problems too

components/config/gamesettings.hpp

@@ -40,9 +40,8 @@ namespace Config
 
         inline void setValue(const QString& key, const SettingValue& value)
         {
-            mSettings.remove(key);
+            remove(key);
             mSettings.insert(key, value);
-            mUserSettings.remove(key);
             if (isUserSetting(value))
                 mUserSettings.insert(key, value);
         }
@@ -63,7 +62,14 @@ namespace Config
 
         inline void remove(const QString& key)
         {
-            mSettings.remove(key);
+            // simplify to removeIf when Qt5 goes
+            for (auto itr = mSettings.lowerBound(key); itr != mSettings.upperBound(key);)
+            {
+                if (isUserSetting(*itr))
+                    itr = mSettings.erase(itr);
+                else
+                    ++itr;
+            }
             mUserSettings.remove(key);
         }
 

components/contentselector/model/contentmodel.cpp

@@ -19,9 +19,10 @@
 #include <components/files/openfile.hpp>
 #include <components/files/qtconversion.hpp>
 
-ContentSelectorModel::ContentModel::ContentModel(QObject* parent, QIcon& warningIcon, bool showOMWScripts)
+ContentSelectorModel::ContentModel::ContentModel(QObject* parent, QIcon& warningIcon, QIcon& errorIcon, bool showOMWScripts)
     : QAbstractTableModel(parent)
     , mWarningIcon(warningIcon)
+    , mErrorIcon(errorIcon)
     , mShowOMWScripts(showOMWScripts)
     , mMimeType("application/omwcontent")
     , mMimeTypes(QStringList() << mMimeType)
@@ -169,7 +170,12 @@ QVariant ContentSelectorModel::ContentModel::data(const QModelIndex& index, int
     {
         case Qt::DecorationRole:
         {
-            return isLoadOrderError(file) ? mWarningIcon : QVariant();
+            if (file->isMissing())
+                return mErrorIcon;
+            else if (isLoadOrderError(file))
+                return mWarningIcon;
+            else
+                return QVariant();
         }
 
         case Qt::FontRole:
@@ -595,10 +601,32 @@ void ContentSelectorModel::ContentModel::sortFiles()
 {
     emit layoutAboutToBeChanged();
 
-    int firstModifiable = 0;
+    // make both Qt5 (int) and Qt6 (qsizetype aka size_t) happy
-    while (firstModifiable < mFiles.size()
+    using index_t = ContentFileList::size_type;
-        && (mFiles.at(firstModifiable)->builtIn() || mFiles.at(firstModifiable)->fromAnotherConfigFile()))
+
-        ++firstModifiable;
+    // ensure built-in are first
+    index_t firstModifiable = 0;
+    for (index_t i = 0; i < mFiles.length(); ++i)
+    {
+        if (mFiles.at(i)->builtIn())
+            mFiles.move(i, firstModifiable++);
+    }
+
+    // then non-user content
+    for (const auto& filename : mNonUserContent)
+    {
+        const EsmFile* file = item(filename);
+        int filePosition = indexFromItem(file).row();
+        if (filePosition >= 0)
+            mFiles.move(filePosition, firstModifiable++);
+        else
+        {
+            // the file is not in the VFS, and will be displayed with an error
+            auto missingFile = std::make_unique<EsmFile>(filename);
+            missingFile->setFromAnotherConfigFile(true);
+            mFiles.insert(firstModifiable++, missingFile.release());
+        }
+    }
 
     // For the purposes of dependency sort we'll hallucinate that Bloodmoon is dependent on Tribunal
     const EsmFile* tribunalFile = item("Tribunal.esm");
@@ -669,20 +697,10 @@ void ContentSelectorModel::ContentModel::setNonUserContent(const QStringList& fi
 {
     mNonUserContent.clear();
     for (const auto& file : fileList)
-        mNonUserContent.insert(file.toLower());
+        mNonUserContent.append(file.toLower());
     for (auto* file : mFiles)
         file->setFromAnotherConfigFile(mNonUserContent.contains(file->fileName().toLower()));
 
-    auto insertPosition
-        = std::ranges::find_if(mFiles, [](const EsmFile* file) { return !file->builtIn(); }) - mFiles.begin();
-
-    for (const auto& filepath : fileList)
-    {
-        const EsmFile* file = item(filepath);
-        int filePosition = indexFromItem(file).row();
-        mFiles.move(filePosition, insertPosition++);
-    }
-
     sortFiles();
 }
 

components/contentselector/model/contentmodel.hpp

@@ -25,7 +25,7 @@ namespace ContentSelectorModel
     {
         Q_OBJECT
     public:
-        explicit ContentModel(QObject* parent, QIcon& warningIcon, bool showOMWScripts);
+        explicit ContentModel(QObject* parent, QIcon& warningIcon, QIcon& errorIcon, bool showOMWScripts);
         ~ContentModel();
 
         void setEncoding(const QString& encoding);
@@ -86,12 +86,13 @@ namespace ContentSelectorModel
 
         const EsmFile* mGameFile;
         ContentFileList mFiles;
-        QSet<QString> mNonUserContent;
+        QStringList mNonUserContent;
         std::set<const EsmFile*> mCheckedFiles;
         QHash<QString, bool> mNewFiles;
         QSet<QString> mPluginsWithLoadOrderError;
         QString mEncoding;
         QIcon mWarningIcon;
+        QIcon mErrorIcon;
         bool mShowOMWScripts;
 
         QString mErrorToolTips[ContentSelectorModel::LoadOrderError::ErrorCode_LoadOrder]

components/contentselector/model/esmfile.hpp

@@ -55,12 +55,15 @@ namespace ContentSelectorModel
         QString filePath() const { return mPath; }
         bool builtIn() const { return mBuiltIn; }
         bool fromAnotherConfigFile() const { return mFromAnotherConfigFile; }
+        bool isMissing() const { return mPath.isEmpty(); }
 
         /// @note Contains file names, not paths.
         const QStringList& gameFiles() const { return mGameFiles; }
         QString description() const { return mDescription; }
         QString toolTip() const
         {
+            if (isMissing())
+                return tr("<b>This file is specified in a non-user config file, but does not exist in the VFS.</b>");
             QString tooltip = mTooltipTemlate.arg(mAuthor)
                                   .arg(mVersion)
                                   .arg(mModified.toString(Qt::ISODate))

components/contentselector/view/contentselector.cpp

@@ -32,7 +32,8 @@ ContentSelectorView::ContentSelector::~ContentSelector() = default;
 void ContentSelectorView::ContentSelector::buildContentModel(bool showOMWScripts)
 {
     QIcon warningIcon(ui->addonView->style()->standardIcon(QStyle::SP_MessageBoxWarning));
-    mContentModel = new ContentSelectorModel::ContentModel(this, warningIcon, showOMWScripts);
+    QIcon errorIcon(ui->addonView->style()->standardIcon(QStyle::SP_MessageBoxCritical));
+    mContentModel = new ContentSelectorModel::ContentModel(this, warningIcon, errorIcon, showOMWScripts);
 }
 
 void ContentSelectorView::ContentSelector::buildGameFileView()

files/lang/components_de.ts

@@ -37,6 +37,10 @@
         <source>&lt;br/&gt;&lt;b&gt;This content file cannot be disabled because it is enabled in a config file other than the user one.&lt;/b&gt;&lt;br/&gt;</source>
         <translation type="unfinished"></translation>
     </message>
+    <message>
+        <source>&lt;b&gt;This file is specified in a non-user config file, but does not exist in the VFS.&lt;/b&gt;</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>ContentSelectorView::ContentSelector</name>

files/lang/components_en.ts

@@ -37,6 +37,10 @@
         <source>&lt;b&gt;Author:&lt;/b&gt; %1&lt;br/&gt;&lt;b&gt;Format version:&lt;/b&gt; %2&lt;br/&gt;&lt;b&gt;Modified:&lt;/b&gt; %3&lt;br/&gt;&lt;b&gt;Path:&lt;/b&gt;&lt;br/&gt;%4&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Description:&lt;/b&gt;&lt;br/&gt;%5&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Dependencies: &lt;/b&gt;%6&lt;br/&gt;</source>
         <translation></translation>
     </message>
+    <message>
+        <source>&lt;b&gt;This file is specified in a non-user config file, but does not exist in the VFS.&lt;/b&gt;</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>ContentSelectorView::ContentSelector</name>

files/lang/components_fr.ts

@@ -37,6 +37,10 @@
         <source>&lt;br/&gt;&lt;b&gt;This content file cannot be disabled because it is enabled in a config file other than the user one.&lt;/b&gt;&lt;br/&gt;</source>
         <translation>&lt;br/&gt;&lt;b&gt;Ce fichier de contenu ne peut être désactivé, car il est activé par un fichier de configuration non contrôlé par l&apos;utilisateur.&lt;/b&gt;&lt;br/&gt;</translation>
     </message>
+    <message>
+        <source>&lt;b&gt;This file is specified in a non-user config file, but does not exist in the VFS.&lt;/b&gt;</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>ContentSelectorView::ContentSelector</name>

files/lang/components_ru.ts

@@ -37,6 +37,10 @@
         <source>&lt;br/&gt;&lt;b&gt;This content file cannot be disabled because it is enabled in a config file other than the user one.&lt;/b&gt;&lt;br/&gt;</source>
         <translation>&lt;br/&gt;&lt;b&gt;Этот файл данных не может быть отключен, потому что он включен в файле с настройками, не являющемся пользовательским.&lt;/b&gt;&lt;br/&gt;</translation>
     </message>
+    <message>
+        <source>&lt;b&gt;This file is specified in a non-user config file, but does not exist in the VFS.&lt;/b&gt;</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>ContentSelectorView::ContentSelector</name>

files/lang/components_sv.ts

@@ -37,6 +37,10 @@
         <source>&lt;br/&gt;&lt;b&gt;This content file cannot be disabled because it is enabled in a config file other than the user one.&lt;/b&gt;&lt;br/&gt;</source>
         <translation>&lt;br/&gt;&lt;b&gt;Denna innehållsfil kan inte inaktiveras då den är en aktiverad i en annan konfigurationsfil än användarens.&lt;/b&gt;&lt;br/&gt;</translation>
     </message>
+    <message>
+        <source>&lt;b&gt;This file is specified in a non-user config file, but does not exist in the VFS.&lt;/b&gt;</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>ContentSelectorView::ContentSelector</name>