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o3de/Code/Tools/SerializeContextTools/SliceConverterEditorEntityC...

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C++

/*
* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
* its licensors.
*
* For complete copyright and license terms please see the LICENSE at the root of this
* distribution (the "License"). All use of this software is governed by the License,
* or, if provided, by the license below or the license accompanying this file. Do not
* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*
*/
#pragma once
#include <AzToolsFramework/Entity/EditorEntityContextComponent.h>
namespace AzToolsFramework
{
// This class is an inelegant workaround for use by the Slice Converter to selectively disable entity add/remove logic
// during slice conversion in the EditorEntityContextComponent. Specifically, the standard versions of these methods will
// attempt to activate the entities as they're added. This is both unnecessary and undesirable during slice conversion, since
// entity activation requires a lot of subsystems to be active and valid.
// Instead, by selectively disabling this logic, the entities can remain in an initialized state, which is sufficient for conversion,
// without requiring those extra subsystems.
// This problem also could have been solved by adding APIs to the EditorEntityContextComponent or the EntityContext, but there aren't
// any other known valid use cases for disabling this logic, so the extra APIs would simply encourage "bad behavior" by using them
// when they likely aren't necessary or desired.
class SliceConverterEditorEntityContextComponent
: public EditorEntityContextComponent
{
public:
AZ_COMPONENT(SliceConverterEditorEntityContextComponent, "{1CB0C38F-8E85-4422-91C6-E1F3B9B4B853}");
SliceConverterEditorEntityContextComponent() : EditorEntityContextComponent() {}
// Simple API to selectively disable this logic *only* when performing slice to prefab conversion.
static void DisableOnContextEntityLogic()
{
m_enableOnContextEntityLogic = false;
}
protected:
void OnContextEntitiesAdded([[maybe_unused]] const EntityList& entities) override
{
if (m_enableOnContextEntityLogic)
{
EditorEntityContextComponent::OnContextEntitiesAdded(entities);
}
}
void OnContextEntityRemoved([[maybe_unused]] const AZ::EntityId& id) override
{
if (m_enableOnContextEntityLogic)
{
EditorEntityContextComponent::OnContextEntityRemoved(id);
}
}
// By default, act just like the EditorEntityContextComponent
static inline bool m_enableOnContextEntityLogic = true;
};
} // namespace AzToolsFramework