{lyn7065} adding ProcPrefab Prefab::Tempate flag method (#4765)

* {lyn7065} adding ProcPrefab Prefab::Tempate flag method

Signed-off-by: jackalbe <23512001+jackalbe@users.noreply.github.com>

* updated based on comments

Signed-off-by: jackalbe <23512001+jackalbe@users.noreply.github.com>

* moved validation logic to IsValid()

Signed-off-by: jackalbe <23512001+jackalbe@users.noreply.github.com>

* added more guards around the source string


Signed-off-by: jackalbe <23512001+jackalbe@users.noreply.github.com>

Code/Framework/AzToolsFramework/AzToolsFramework/Prefab/Template/Template.cpp

@@ -66,7 +66,16 @@ namespace AzToolsFramework
 
         bool Template::IsValid() const
         {
-            return !m_prefabDom.IsNull() && !m_filePath.empty();
+            if (m_prefabDom.IsNull() || m_filePath.empty())
+            {
+                return false;
+            }
+            else if (!m_prefabDom.IsObject())
+            {
+                return false;
+            }
+            auto source = m_prefabDom.FindMember(PrefabDomUtils::SourceName);
+            return (source != m_prefabDom.MemberEnd());
         }
 
         bool Template::IsLoadedWithErrors() const
@@ -175,6 +184,26 @@ namespace AzToolsFramework
             return findInstancesResult->get();
         }
 
+        bool Template::IsProcedural() const
+        {
+            if (m_isProcedural.has_value())
+            {
+                return m_isProcedural.value();
+            }
+            else if (!IsValid())
+            {
+                return false;
+            }
+            auto source = m_prefabDom.FindMember(PrefabDomUtils::SourceName);
+            if (!source->value.IsString())
+            {
+                return false;
+            }
+            AZ::IO::PathView path(source->value.GetString());
+            m_isProcedural = AZStd::make_optional(path.Extension().Match(".procprefab"));
+            return m_isProcedural.value();
+        }
+
         const AZ::IO::Path& Template::GetFilePath() const
         {
             return m_filePath;

Code/Framework/AzToolsFramework/AzToolsFramework/Prefab/Template/Template.h

@@ -65,6 +65,9 @@ namespace AzToolsFramework
             const AZ::IO::Path& GetFilePath() const;
             void SetFilePath(const AZ::IO::PathView& path);
 
+            // To tell if this Template was created from an product asset
+            bool IsProcedural() const;
+
         private:
             // Container for keeping links representing the Template's nested instances.
             Links m_links;
@@ -80,6 +83,9 @@ namespace AzToolsFramework
 
             // Flag to tell if this Template has changes that have yet to be saved to file.
             bool m_isDirty = false;
+
+            // Flag to tell if this Template was generated outside the Editor
+            mutable AZStd::optional<bool> m_isProcedural;
         };
     } // namespace Prefab
 } // namespace AzToolsFramework