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o3de/Code/Framework/AzToolsFramework/AzToolsFramework/Prefab/PrefabLoaderInterface.h

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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 <AzCore/Interface/Interface.h>
#include <AzCore/IO/Path/Path.h>
#include <AzCore/Serialization/SerializeContext.h>
#include <AzToolsFramework/Prefab/PrefabIdTypes.h>
namespace AzToolsFramework
{
namespace Prefab
{
/*!
* PrefabLoaderInterface
* Interface for saving/loading Prefab files.
*/
class PrefabLoaderInterface
{
public:
AZ_RTTI(PrefabLoaderInterface, "{C7B26070-B1BE-470C-BE5A-45B0CF112E68}");
/**
* Load Prefab Template from given file path to memory and return the id of loaded Template.
* Converts Prefab Asset form into Prefab Template form by expanding source path and patch info
* into fully formed nested template info.
* @param filePath A Prefab Template file path.
* @return A unique id of Template on filePath loaded. Return invalid template id if loading Template on filePath failed.
*/
virtual TemplateId LoadTemplateFromFile(AZ::IO::PathView filePath) = 0;
/**
* Load Prefab Template from given content string to memory and return the id of loaded Template.
* Converts .prefab form into Prefab Template form by expanding source path and patch info
* into fully formed nested template info.
* @param content Json content of the prefab
* @param originPath Path that will be used for the prefab in case of saved into a file.
* @return A unique id of Template on filePath loaded. Return invalid template id if loading Template on filePath failed.
*/
virtual TemplateId LoadTemplateFromString(AZStd::string_view content, AZ::IO::PathView originPath = GeneratePath()) = 0;
/**
* Saves a Prefab Template to the the source path registered with the template.
* Converts Prefab Template form into Prefab Asset form by collapsing nested Template info
* into a source path and patches.
* @param templateId Id of the template to be saved
* @return bool on whether the operation succeeded or not
*/
virtual bool SaveTemplate(TemplateId templateId) = 0;
/**
* Saves a Prefab Template to the provided absolute source path, which needs to match the relative path in the template.
* Converts Prefab Template form into .prefab form by collapsing nested Template info
* into a source path and patches.
* @param templateId Id of the template to be saved
* @param absolutePath Absolute path to save the file to
* @return bool on whether the operation succeeded or not
*/
virtual bool SaveTemplateToFile(TemplateId templateId, AZ::IO::PathView absolutePath) = 0;
/**
* Saves a Prefab Template into the provided output string.
* Converts Prefab Template form into .prefab form by collapsing nested Template info
* into a source path and patches.
* @param templateId Id of the template to be saved
* @param outputJson Will contain the serialized template json on success
* @return bool on whether the operation succeeded or not
*/
virtual bool SaveTemplateToString(TemplateId templateId, AZStd::string& outputJson) = 0;
//! Converts path into full absolute path. This will be used by loading/save IO operations.
//! The path will always have the correct separator for the current OS
virtual AZ::IO::Path GetFullPath(AZ::IO::PathView path) = 0;
//! Converts path into a path that's relative to the highest-priority containing folder of all the folders registered
//! with the engine.
//! This path will be the path that appears in the .prefab file.
//! The path will always use the '/' separator.
virtual AZ::IO::Path GenerateRelativePath(AZ::IO::PathView path) = 0;
protected:
// Generates a new path
static AZ::IO::Path GeneratePath();
};
} // namespace Prefab
} // namespace AzToolsFramework