Add FUSE external mapping support, BG3/Oblivion Remastered fixes, fomod-plus and NaK integration

FUSE VFS now deploys non-data-dir mod mappings (Paks, OBSE, UE4SS, etc.)
via real symlinks and injects file-level data-dir mappings (plugins.txt,
loadorder.txt) into the VFS tree. Fixes game launches for Oblivion
Remastered (Root Builder path resolution, script extender support) and
BG3 (Wine prefix documents directory, file mapper symlinks on Linux).

Vendors mo2-fomod-plus plugin and NaK crate for FOMOD installer and
game finder/runtime support.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1 files changed, 95 insertions, 0 deletions

diff --git a/libs/installer_fomod_plus/installer/ui/UIHelper.cpp b/libs/installer_fomod_plus/installer/ui/UIHelper.cpp
new file mode 100644
index 0000000..2312fd1
--- /dev/null
+++ b/libs/installer_fomod_plus/installer/ui/UIHelper.cpp
@@ -0,0 +1,95 @@
+#include "UIHelper.h"
+
+#include <qcoreevent.h>
+#include <QDir>
+#include <QMouseEvent>
+
+HoverEventFilter::HoverEventFilter(const std::shared_ptr<PluginViewModel>& plugin, QObject* parent)
+    : QObject(parent), mPlugin(plugin) {}
+
+bool HoverEventFilter::eventFilter(QObject* obj, QEvent* event)
+{
+    if (event->type() == QEvent::HoverEnter) {
+        emit hovered(mPlugin);
+        return true;
+    }
+    return QObject::eventFilter(obj, event);
+}
+
+CtrlClickEventFilter::CtrlClickEventFilter(const std::shared_ptr<PluginViewModel>& plugin,
+    const std::shared_ptr<GroupViewModel>& group, QObject* parent)
+    : QObject(parent), mPlugin(plugin), mGroup(group) {}
+
+bool CtrlClickEventFilter::eventFilter(QObject* obj, QEvent* event)
+{
+    if (event->type() == QEvent::MouseButtonPress) {
+        const QMouseEvent* mouseEvent = static_cast<QMouseEvent*>(event);
+        if (mouseEvent->button() == Qt::LeftButton &&
+            mouseEvent->modifiers() & Qt::ControlModifier) {
+            // TODO: Add Ctrl+click handler logic here
+            std::cout << "Ctrl+click detected on plugin: " << mPlugin->getName() << " in group: " << mGroup->getName() << std::endl;
+            // For now, just fall through to default behavior
+        }
+    }
+    return QObject::eventFilter(obj, event);
+}
+
+QPushButton* UIHelper::createButton(const QString& text, QWidget* parent = nullptr)
+{
+    const auto button = new QPushButton(text, parent);
+    return button;
+}
+
+QLabel* UIHelper::createLabel(const QString& text, QWidget* parent = nullptr)
+{
+    const auto label = new QLabel(text, parent);
+    return label;
+}
+
+QLabel* UIHelper::createHyperlink(const QString& url, QWidget* parent = nullptr)
+{
+    if (url.isEmpty() || !QUrl(url).isValid()) {
+        return createLabel(url, parent);
+    }
+    const auto label        = new QLabel(url, parent);
+    const QString hyperlink = QString("<a href=\"%1\">%2</a>").arg(url, "Link");
+    label->setText(hyperlink);
+    label->setOpenExternalLinks(true);
+    label->setTextFormat(Qt::RichText);
+    return label;
+}
+
+QString UIHelper::getFullImagePath(const QString& fomodPath, const QString& imagePath)
+{
+    return QDir::tempPath() + "/" + fomodPath + "/" + imagePath;
+}
+
+void UIHelper::setGlobalAlignment(QBoxLayout* layout, const Qt::Alignment alignment)
+{
+    for (int i = 0; i < layout->count(); ++i) {
+        if (const QLayoutItem* item = layout->itemAt(i); item->widget()) {
+            layout->setAlignment(item->widget(), alignment);
+        }
+    }
+}
+
+void UIHelper::setDebugBorders(QWidget* widget)
+{
+    widget->setStyleSheet("border: 1px solid red;");
+    for (auto* child : widget->findChildren<QWidget*>()) {
+        child->setStyleSheet("border: 1px solid red;");
+    }
+}
+
+void UIHelper::reduceLabelPadding(const QLayout* layout)
+{
+    for (int i = 0; i < layout->count(); ++i) {
+        const QLayoutItem* item = layout->itemAt(i);
+        if (QWidget* widget = item->widget()) {
+            if (const auto label = qobject_cast<QLabel*>(widget)) {
+                label->setContentsMargins(0, 0, 0, 0);
+                label->setStyleSheet("padding: 0px; margin: 0px;");
+            }
+        }
+    }
+}