PrismLauncher/launcher/InstanceList.h
Rachel Powers 1ca2c59f2e feat: track instance copies that use links
confirm deleations when other instances link to it

Signed-off-by: Rachel Powers <508861+Ryex@users.noreply.github.com>
2023-03-20 14:56:32 -07:00

204 lines
6.0 KiB
C++

/* Copyright 2013-2021 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 <QAbstractListModel>
#include <QSet>
#include <QList>
#include <QStack>
#include <QPair>
#include "BaseInstance.h"
class QFileSystemWatcher;
class InstanceTask;
struct InstanceName;
using InstanceId = QString;
using GroupId = QString;
using InstanceLocator = std::pair<InstancePtr, int>;
enum class InstCreateError
{
NoCreateError = 0,
NoSuchVersion,
UnknownCreateError,
InstExists,
CantCreateDir
};
enum class GroupsState
{
NotLoaded,
Steady,
Dirty
};
struct TrashHistoryItem {
QString id;
QString polyPath;
QString trashPath;
QString groupName;
};
class InstanceList : public QAbstractListModel
{
Q_OBJECT
public:
explicit InstanceList(SettingsObjectPtr settings, const QString & instDir, QObject *parent = 0);
virtual ~InstanceList();
public:
QModelIndex index(int row, int column = 0, const QModelIndex &parent = QModelIndex()) const override;
int rowCount(const QModelIndex &parent = QModelIndex()) const override;
QVariant data(const QModelIndex &index, int role) const override;
Qt::ItemFlags flags(const QModelIndex &index) const override;
bool setData(const QModelIndex & index, const QVariant & value, int role) override;
enum AdditionalRoles
{
GroupRole = Qt::UserRole,
InstancePointerRole = 0x34B1CB48, ///< Return pointer to real instance
InstanceIDRole = 0x34B1CB49 ///< Return id if the instance
};
/*!
* \brief Error codes returned by functions in the InstanceList class.
* NoError Indicates that no error occurred.
* UnknownError indicates that an unspecified error occurred.
*/
enum InstListError
{
NoError = 0,
UnknownError
};
InstancePtr at(int i) const
{
return m_instances.at(i);
}
int count() const
{
return m_instances.count();
}
InstListError loadList();
void saveNow();
/* O(n) */
InstancePtr getInstanceById(QString id) const;
/* O(n) */
InstancePtr getInstanceByManagedName(const QString& managed_name) const;
QModelIndex getInstanceIndexById(const QString &id) const;
QStringList getGroups();
bool isGroupCollapsed(const QString &groupName);
GroupId getInstanceGroup(const InstanceId & id) const;
void setInstanceGroup(const InstanceId & id, const GroupId& name);
void deleteGroup(const GroupId & name);
bool trashInstance(const InstanceId &id);
bool trashedSomething();
void undoTrashInstance();
void deleteInstance(const InstanceId & id);
// Wrap an instance creation task in some more task machinery and make it ready to be used
Task * wrapInstanceTask(InstanceTask * task);
/**
* Create a new empty staging area for instance creation and @return a path/key top commit it later.
* Used by instance manipulation tasks.
*/
QString getStagedInstancePath();
/**
* Commit the staging area given by @keyPath to the provider - used when creation succeeds.
* Used by instance manipulation tasks.
* should_override is used when another similar instance already exists, and we want to override it
* - for instance, when updating it.
*/
bool commitStagedInstance(const QString& keyPath, const InstanceName& instanceName, const QString& groupName, const InstanceTask&);
/**
* Destroy a previously created staging area given by @keyPath - used when creation fails.
* Used by instance manipulation tasks.
*/
bool destroyStagingPath(const QString & keyPath);
int getTotalPlayTime();
Qt::DropActions supportedDragActions() const override;
Qt::DropActions supportedDropActions() const override;
bool canDropMimeData(const QMimeData * data, Qt::DropAction action, int row, int column, const QModelIndex & parent) const override;
bool dropMimeData(const QMimeData * data, Qt::DropAction action, int row, int column, const QModelIndex & parent) override;
QStringList mimeTypes() const override;
QMimeData *mimeData(const QModelIndexList &indexes) const override;
QStringList getLinkedInstancesById(const QString &id) const;
signals:
void dataIsInvalid();
void instancesChanged();
void instanceSelectRequest(QString instanceId);
void groupsChanged(QSet<QString> groups);
public slots:
void on_InstFolderChanged(const Setting &setting, QVariant value);
void on_GroupStateChanged(const QString &group, bool collapsed);
private slots:
void propertiesChanged(BaseInstance *inst);
void providerUpdated();
void instanceDirContentsChanged(const QString &path);
private:
int getInstIndex(BaseInstance *inst) const;
void updateTotalPlayTime();
void suspendWatch();
void resumeWatch();
void add(const QList<InstancePtr> &list);
void loadGroupList();
void saveGroupList();
QList<InstanceId> discoverInstances();
InstancePtr loadInstance(const InstanceId& id);
private:
int m_watchLevel = 0;
int totalPlayTime = 0;
bool m_dirty = false;
QList<InstancePtr> m_instances;
QSet<QString> m_groupNameCache;
SettingsObjectPtr m_globalSettings;
QString m_instDir;
QFileSystemWatcher * m_watcher;
// FIXME: this is so inefficient that looking at it is almost painful.
QSet<QString> m_collapsedGroups;
QMap<InstanceId, GroupId> m_instanceGroupIndex;
QSet<InstanceId> instanceSet;
bool m_groupsLoaded = false;
bool m_instancesProbed = false;
QStack<TrashHistoryItem> m_trashHistory;
};