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/* Copyright 2013 MultiMC Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <QObject>
#include <QMap>
#include <QList>
#include "BaseVersion.h"
class BaseVersion;
class BaseInstance;
/*!
* The \bInstanceFactory\b is a singleton that manages loading and creating instances.
*/
class InstanceFactory : public QObject
{
Q_OBJECT
public:
/*!
* \brief Gets a reference to the instance loader.
*/
static InstanceFactory &get() { return loader; }
enum InstLoadError
{
NoLoadError = 0,
UnknownLoadError,
NotAnInstance
};
enum InstCreateError
{
NoCreateError = 0,
NoSuchVersion,
UnknownCreateError,
InstExists,
CantCreateDir
};
/*!
* \brief Creates a stub instance
*
* \param inst Pointer to store the created instance in.
* \param instDir The instance's directory.
* \return An InstCreateError error code.
* - InstExists if the given instance directory is already an instance.
* - CantCreateDir if the given instance directory cannot be created.
*/
InstCreateError createInstance(BaseInstance *&inst, BaseVersionPtr version, const QString &instDir);
/*!
* \brief Loads an instance from the given directory.
* Checks the instance's INI file to figure out what the instance's type is first.
* \param inst Pointer to store the loaded instance in.
* \param instDir The instance's directory.
* \return An InstLoadError error code.
* - NotAnInstance if the given instance directory isn't a valid instance.
*/
InstLoadError loadInstance(BaseInstance *&inst, const QString &instDir);
private:
InstanceFactory();
static InstanceFactory loader;
};
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