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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.
*/
#ifndef INSTANCETYPE_H
#define INSTANCETYPE_H
#include <QObject>
#include "instanceloader.h"
class InstVersionList;
//! The InstanceTypeInterface's interface ID.
#define InstanceTypeInterface_IID "net.forkk.MultiMC.InstanceTypeInterface/0.1"
/*!
* \brief The InstanceType class is an interface for all instance types.
* InstanceTypes are usually provided by plugins.
* It handles loading and creating instances of a certain type. There should be
* one of these for each type of instance and they should be registered with the
* InstanceLoader.
* To create an instance, the InstanceLoader calls the type's createInstance()
* function. Loading is done through the loadInstance() function.
*/
class InstanceTypeInterface
{
public:
friend class InstanceLoader;
/*!
* \brief Gets the ID for this instance type.
* The type ID should be unique as it is used to identify the type
* of instances when they are loaded.
* Changing this value at runtime results in undefined behavior.
* \return This instance type's ID string.
*/
virtual QString typeID() const = 0;
/*!
* \brief Gets the name of this instance type as it is displayed to the user.
* \return The instance type's display name.
*/
virtual QString displayName() const = 0;
/*!
* \brief Gets a longer, more detailed description of this instance type.
* \return The instance type's description.
*/
virtual QString description() const = 0;
/*!
* \brief Gets the version list for this instance type.
* \return A pointer to this instance type's version list.
*/
virtual InstVersionList *versionList() const = 0;
protected:
/*!
* \brief Creates an instance and stores it in inst.
* \param inst Pointer to store the created instance in.
* \param instDir The instance's directory.
* \return An InstTypeError error code.
* TypeNotRegistered if the given type is not registered with the InstanceLoader.
* InstExists if the given instance directory is already an instance.
*/
virtual InstanceLoader::InstLoaderError createInstance(Instance *&inst, const QString &instDir) const = 0;
/*!
* \brief Loads an instance from the given directory.
* \param inst Pointer to store the loaded instance in.
* \param instDir The instance's directory.
* \return An InstTypeError error code.
* TypeNotRegistered if the given type is not registered with the InstanceLoader.
* NotAnInstance if the given instance directory isn't a valid instance.
* WrongInstType if the given instance directory's type isn't an instance of this type.
*/
virtual InstanceLoader::InstLoaderError loadInstance(Instance *&inst, const QString &instDir) const = 0;
};
Q_DECLARE_INTERFACE(InstanceTypeInterface, InstanceTypeInterface_IID)
#endif // INSTANCETYPE_H
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