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/* Copyright 2013-2015 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 <QVariant>
#include <QAbstractListModel>
#include "BaseVersion.h"
class Task;
/*!
* \brief Class that each instance type's version list derives from.
* Version lists are the lists that keep track of the available game versions
* for that instance. This list will not be loaded on startup. It will be loaded
* when the list's load function is called. Before using the version list, you
* should check to see if it has been loaded yet and if not, load the list.
*
* Note that this class also inherits from QAbstractListModel. Methods from that
* class determine how this version list shows up in a list view. Said methods
* all have a default implementation, but they can be overridden by plugins to
* change the behavior of the list.
*/
class BaseVersionList : public QAbstractListModel
{
Q_OBJECT
public:
enum ModelRoles
{
VersionPointerRole = Qt::UserRole,
VersionRole,
VersionIdRole,
ParentGameVersionRole,
RecommendedRole,
TypeRole,
BranchRole,
PathRole,
ArchitectureRole
};
typedef QList<ModelRoles> RoleList;
explicit BaseVersionList(QObject *parent = 0);
/*!
* \brief Gets a task that will reload the version list.
* Simply execute the task to load the list.
* The task returned by this function should reset the model when it's done.
* \return A pointer to a task that reloads the version list.
*/
virtual Task *getLoadTask() = 0;
//! Checks whether or not the list is loaded. If this returns false, the list should be
//loaded.
virtual bool isLoaded() = 0;
//! Gets the version at the given index.
virtual const BaseVersionPtr at(int i) const = 0;
//! Returns the number of versions in the list.
virtual int count() const = 0;
//////// List Model Functions ////////
virtual QVariant data(const QModelIndex &index, int role) const;
virtual int rowCount(const QModelIndex &parent) const;
virtual int columnCount(const QModelIndex &parent) const;
//! which roles are provided by this version list?
virtual RoleList providesRoles();
/*!
* \brief Finds a version by its descriptor.
* \param The descriptor of the version to find.
* \return A const pointer to the version with the given descriptor. NULL if
* one doesn't exist.
*/
virtual BaseVersionPtr findVersion(const QString &descriptor);
/*!
* \brief Gets the latest stable version of this instance type.
* This is the version that will be selected by default.
* By default, this is simply the first version in the list.
*/
virtual BaseVersionPtr getLatestStable() const;
/*!
* Sorts the version list.
*/
virtual void sort() = 0;
protected
slots:
/*!
* Updates this list with the given list of versions.
* This is done by copying each version in the given list and inserting it
* into this one.
* We need to do this so that we can set the parents of the versions are set to this
* version list. This can't be done in the load task, because the versions the load
* task creates are on the load task's thread and Qt won't allow their parents
* to be set to something created on another thread.
* To get around that problem, we invoke this method on the GUI thread, which
* then copies the versions and sets their parents correctly.
* \param versions List of versions whose parents should be set.
*/
virtual void updateListData(QList<BaseVersionPtr> versions) = 0;
};
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