diff --git a/src/Editor/ResourceBrowser/CResourceProxyModel.cpp b/src/Editor/ResourceBrowser/CResourceProxyModel.cpp
new file mode 100644
index 00000000..a6a36c7e
--- /dev/null
+++ b/src/Editor/ResourceBrowser/CResourceProxyModel.cpp
@@ -0,0 +1,152 @@
+#include "Editor/ResourceBrowser/CResourceProxyModel.h"
+
+CResourceProxyModel::CResourceProxyModel(QObject* parent)
+    : QSortFilterProxyModel(parent)
+{
+    SetSortMode(ESortMode::ByName);
+}
+
+CResourceProxyModel::~CResourceProxyModel() = default;
+
+void CResourceProxyModel::setSourceModel(QAbstractItemModel* sourceModel)
+{
+    auto* resModel = qobject_cast<CResourceTableModel*>(sourceModel);
+    mpModel = resModel;
+    QSortFilterProxyModel::setSourceModel(resModel);
+    sort(0);
+}
+
+bool CResourceProxyModel::lessThan(const QModelIndex& rkLeft, const QModelIndex& rkRight) const
+{
+    // Parent directory is always row 0 and should always be at the top
+    if (mpModel->HasParentDirectoryEntry())
+    {
+        if (rkLeft.row() == 0)
+            return true;
+
+        if (rkRight.row() == 0)
+            return false;
+    }
+
+    // Fetch directories and compare them
+    const CVirtualDirectory* pLeftDir = mpModel->IndexDirectory(rkLeft);
+    const CVirtualDirectory* pRightDir = mpModel->IndexDirectory(rkRight);
+    const CResourceEntry* pLeftRes = mpModel->IndexEntry(rkLeft);
+    const CResourceEntry* pRightRes = mpModel->IndexEntry(rkRight);
+
+    if (pLeftDir && !pRightDir)
+        return true;
+
+    if (pRightDir && !pLeftDir)
+        return false;
+
+    if (pLeftDir && pRightDir)
+        return pLeftDir->Name().ToUpper() < pRightDir->Name().ToUpper();
+
+    if (mSortMode == ESortMode::ByName)
+        return pLeftRes->UppercaseName() < pRightRes->UppercaseName();
+
+    return pLeftRes->Size() < pRightRes->Size();
+}
+
+bool CResourceProxyModel::filterAcceptsRow(int SourceRow, const QModelIndex& rkSourceParent) const
+{
+    QModelIndex Index = mpModel->index(SourceRow, 0, rkSourceParent);
+    CResourceEntry *pEntry = mpModel->IndexEntry(Index);
+
+    if (pEntry && !IsTypeAccepted(pEntry->TypeInfo()))
+        return false;
+
+    // Compare search results
+    if (!mSearchString.IsEmpty())
+    {
+        if (!pEntry)
+            return false;
+
+        bool HasNameMatch = pEntry->UppercaseName().Contains(mSearchString);
+
+        if (!HasNameMatch)
+        {
+            bool HasIDMatch = false;
+
+            if (mCompareBitLength > 0)
+            {
+                const auto IDBitLength = static_cast<uint32>(pEntry->ID().Length()) * 8;
+
+                if (mCompareBitLength <= IDBitLength)
+                {
+                    uint64 ID = pEntry->ID().ToLongLong();
+                    uint32 MaxShift = IDBitLength - mCompareBitLength;
+
+                    for (uint32 Shift = 0; Shift <= MaxShift; Shift += 4)
+                    {
+                        uint64 ShiftCompare = mCompareID << Shift;
+                        uint64 Mask = mCompareMask << Shift;
+
+                        if ((ID & Mask) == ShiftCompare)
+                        {
+                            HasIDMatch = true;
+                            break;
+                        }
+                    }
+                }
+            }
+
+            if (!HasIDMatch)
+                return false;
+        }
+    }
+
+    return true;
+}
+
+void CResourceProxyModel::SetTypeFilter(CResTypeInfo *pInfo, bool Allow)
+{
+    if (Allow)
+        mTypeFilter.insert(pInfo);
+    else
+        mTypeFilter.remove(pInfo);
+}
+
+bool CResourceProxyModel::IsTypeAccepted(CResTypeInfo* pTypeInfo) const
+{
+    return mTypeFilter.isEmpty() || mTypeFilter.contains(pTypeInfo);
+}
+
+void CResourceProxyModel::SetSortMode(ESortMode Mode)
+{
+    if (mSortMode != Mode)
+    {
+        mSortMode = Mode;
+        sort(0, (mSortMode == ESortMode::ByName ? Qt::AscendingOrder : Qt::DescendingOrder));
+    }
+}
+
+// ************ SLOTS ************
+void CResourceProxyModel::SetSearchString(const TString& rkString)
+{
+    mSearchString = rkString.ToUpper();
+
+    // Check if this is an asset ID
+    TString IDString = rkString;
+    IDString.RemoveWhitespace();
+
+    if (IDString.StartsWith("0x"))
+        IDString = IDString.ChopFront(2);
+
+    if (IDString.Size() <= 16 && IDString.IsHexString())
+    {
+        mCompareBitLength = IDString.Size() * 4;
+        mCompareMask = ((uint64) 1 << mCompareBitLength) - 1;
+        mCompareID = IDString.ToInt64(16);
+
+        if (mCompareMask == 0)
+            mCompareMask = -1;
+    }
+    else
+    {
+        mCompareID = -1;
+        mCompareMask = 0;
+        mCompareBitLength = 0;
+    }
+}
diff --git a/src/Editor/ResourceBrowser/CResourceProxyModel.h b/src/Editor/ResourceBrowser/CResourceProxyModel.h
index cdb066ce..66454809 100644
--- a/src/Editor/ResourceBrowser/CResourceProxyModel.h
+++ b/src/Editor/ResourceBrowser/CResourceProxyModel.h
@@ -19,6 +19,23 @@ public:
         ByName, BySize
     };
 
+    explicit CResourceProxyModel(QObject* parent = nullptr);
+    ~CResourceProxyModel() override;
+
+    void setSourceModel(QAbstractItemModel* pSourceModel) override;
+    bool lessThan(const QModelIndex& rkLeft, const QModelIndex& rkRight) const override;
+    bool filterAcceptsRow(int SourceRow, const QModelIndex& rkSourceParent) const override;
+
+    void SetTypeFilter(CResTypeInfo *pInfo, bool Allow);
+    void ClearTypeFilter() { mTypeFilter.clear(); }
+    bool HasTypeFilter() const { return !mTypeFilter.isEmpty(); }
+    bool IsTypeAccepted(CResTypeInfo* pTypeInfo) const;
+
+    void SetSortMode(ESortMode Mode);
+
+public slots:
+    void SetSearchString(const TString& rkString);
+
 private:
     CResourceTableModel *mpModel = nullptr;
     TString mSearchString;
@@ -28,167 +45,6 @@ private:
     uint64 mCompareID = 0;
     uint64 mCompareMask = 0;
     uint32 mCompareBitLength = 0;
-
-public:
-    explicit CResourceProxyModel(QObject *pParent = nullptr)
-        : QSortFilterProxyModel(pParent)
-    {
-        SetSortMode(ESortMode::ByName);
-    }
-
-    void setSourceModel(QAbstractItemModel* pSourceModel) override
-    {
-        CResourceTableModel *pResModel = qobject_cast<CResourceTableModel*>(pSourceModel);
-        mpModel = pResModel;
-        QSortFilterProxyModel::setSourceModel(pResModel);
-        sort(0);
-    }
-
-    bool lessThan(const QModelIndex& rkLeft, const QModelIndex& rkRight) const override
-    {
-        // Parent directory is always row 0 and should always be at the top
-        if (mpModel->HasParentDirectoryEntry())
-        {
-            if (rkLeft.row() == 0)
-                return true;
-
-            if (rkRight.row() == 0)
-                return false;
-        }
-
-        // Fetch directories and compare them
-        CVirtualDirectory *pLeftDir = mpModel->IndexDirectory(rkLeft);
-        CVirtualDirectory *pRightDir = mpModel->IndexDirectory(rkRight);
-        CResourceEntry *pLeftRes = mpModel->IndexEntry(rkLeft);
-        CResourceEntry *pRightRes = mpModel->IndexEntry(rkRight);
-
-        if (pLeftDir && !pRightDir)
-            return true;
-
-        else if (pRightDir && !pLeftDir)
-            return false;
-
-        else if (pLeftDir && pRightDir)
-            return pLeftDir->Name().ToUpper() < pRightDir->Name().ToUpper();
-
-        else if (mSortMode == ESortMode::ByName)
-            return pLeftRes->UppercaseName() < pRightRes->UppercaseName();
-
-        else
-            return pLeftRes->Size() < pRightRes->Size();
-    }
-
-    bool filterAcceptsRow(int SourceRow, const QModelIndex& rkSourceParent) const override
-    {
-        QModelIndex Index = mpModel->index(SourceRow, 0, rkSourceParent);
-        CResourceEntry *pEntry = mpModel->IndexEntry(Index);
-
-        if (pEntry && !IsTypeAccepted(pEntry->TypeInfo()))
-            return false;
-
-        // Compare search results
-        if (!mSearchString.IsEmpty())
-        {
-            if (!pEntry)
-                return false;
-
-            bool HasNameMatch = pEntry->UppercaseName().Contains(mSearchString);
-
-            if (!HasNameMatch)
-            {
-                bool HasIDMatch = false;
-
-                if (mCompareBitLength > 0)
-                {
-                    const auto IDBitLength = static_cast<uint32>(pEntry->ID().Length()) * 8;
-
-                    if (mCompareBitLength <= IDBitLength)
-                    {
-                        uint64 ID = pEntry->ID().ToLongLong();
-                        uint32 MaxShift = IDBitLength - mCompareBitLength;
-
-                        for (uint32 Shift = 0; Shift <= MaxShift; Shift += 4)
-                        {
-                            uint64 ShiftCompare = mCompareID << Shift;
-                            uint64 Mask = mCompareMask << Shift;
-
-                            if ((ID & Mask) == ShiftCompare)
-                            {
-                                HasIDMatch = true;
-                                break;
-                            }
-                        }
-                    }
-                }
-
-                if (!HasIDMatch)
-                    return false;
-            }
-        }
-
-        return true;
-    }
-
-    void SetTypeFilter(CResTypeInfo *pInfo, bool Allow)
-    {
-        if (Allow)
-            mTypeFilter.insert(pInfo);
-        else
-            mTypeFilter.remove(pInfo);
-    }
-
-    void ClearTypeFilter()
-    {
-        mTypeFilter.clear();
-    }
-
-    bool HasTypeFilter() const
-    {
-        return !mTypeFilter.isEmpty();
-    }
-
-    bool IsTypeAccepted(CResTypeInfo *pTypeInfo) const
-    {
-        return mTypeFilter.isEmpty() || mTypeFilter.contains(pTypeInfo);
-    }
-
-    void SetSortMode(ESortMode Mode)
-    {
-        if (mSortMode != Mode)
-        {
-            mSortMode = Mode;
-            sort(0, (mSortMode == ESortMode::ByName ? Qt::AscendingOrder : Qt::DescendingOrder));
-        }
-    }
-
-public slots:
-    void SetSearchString(const TString& rkString)
-    {
-        mSearchString = rkString.ToUpper();
-
-        // Check if this is an asset ID
-        TString IDString = rkString;
-        IDString.RemoveWhitespace();
-
-        if (IDString.StartsWith("0x"))
-            IDString = IDString.ChopFront(2);
-
-        if (IDString.Size() <= 16 && IDString.IsHexString())
-        {
-            mCompareBitLength = IDString.Size() * 4;
-            mCompareMask = ((uint64) 1 << mCompareBitLength) - 1;
-            mCompareID = IDString.ToInt64(16);
-
-            if (mCompareMask == 0)
-                mCompareMask = -1;
-        }
-        else
-        {
-            mCompareID = -1;
-            mCompareMask = 0;
-            mCompareBitLength = 0;
-        }
-    }
 };
 
 #endif // CRESOURCEPROXYMODEL