path: root/launcher/InstanceList.cpp

/* 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.
 */

#include <QDir>
#include <QDirIterator>
#include <QSet>
#include <QFile>
#include <QThread>
#include <QTextStream>
#include <QXmlStreamReader>
#include <QTimer>
#include <QDebug>
#include <QFileSystemWatcher>
#include <QUuid>
#include <QJsonArray>
#include <QJsonDocument>
#include <QMimeData>

#include "InstanceList.h"
#include "BaseInstance.h"
#include "InstanceTask.h"
#include "settings/INISettingsObject.h"
#include "NullInstance.h"
#include "minecraft/MinecraftInstance.h"
#include "FileSystem.h"
#include "ExponentialSeries.h"
#include "WatchLock.h"

#ifdef Q_OS_WIN32
#include <Windows.h>
#endif

const static int GROUP_FILE_FORMAT_VERSION = 1;

InstanceList::InstanceList(SettingsObjectPtr settings, const QString & instDir, QObject *parent)
    : QAbstractListModel(parent), m_globalSettings(settings)
{
    resumeWatch();
    // Create aand normalize path
    if (!QDir::current().exists(instDir))
    {
        QDir::current().mkpath(instDir);
    }

    connect(this, &InstanceList::instancesChanged, this, &InstanceList::providerUpdated);

    // NOTE: canonicalPath requires the path to exist. Do not move this above the creation block!
    m_instDir = QDir(instDir).canonicalPath();
    m_watcher = new QFileSystemWatcher(this);
    connect(m_watcher, &QFileSystemWatcher::directoryChanged, this, &InstanceList::instanceDirContentsChanged);
    m_watcher->addPath(m_instDir);
}

InstanceList::~InstanceList()
{
}

Qt::DropActions InstanceList::supportedDragActions() const
{
    return Qt::MoveAction;
}

Qt::DropActions InstanceList::supportedDropActions() const
{
    return Qt::MoveAction;
}

bool InstanceList::canDropMimeData(const QMimeData* data, Qt::DropAction action, int row, int column, const QModelIndex& parent) const
{
    if(data && data->hasFormat("application/x-instanceid")) {
        return true;
    }
    return false;
}

bool InstanceList::dropMimeData(const QMimeData* data, Qt::DropAction action, int row, int column, const QModelIndex& parent)
{
    if(data && data->hasFormat("application/x-instanceid")) {
        return true;
    }
    return false;
}

QStringList InstanceList::mimeTypes() const
{
    auto types = QAbstractListModel::mimeTypes();
    types.push_back("application/x-instanceid");
    return types;
}

QMimeData * InstanceList::mimeData(const QModelIndexList& indexes) const
{
    auto mimeData = QAbstractListModel::mimeData(indexes);
    if(indexes.size() == 1) {
        auto instanceId = data(indexes[0], InstanceIDRole).toString();
        mimeData->setData("application/x-instanceid", instanceId.toUtf8());
    }
    return mimeData;
}


int InstanceList::rowCount(const QModelIndex &parent) const
{
    Q_UNUSED(parent);
    return m_instances.count();
}

QModelIndex InstanceList::index(int row, int column, const QModelIndex &parent) const
{
    Q_UNUSED(parent);
    if (row < 0 || row >= m_instances.size())
        return QModelIndex();
    return createIndex(row, column, (void *)m_instances.at(row).get());
}

QVariant InstanceList::data(const QModelIndex &index, int role) const
{
    if (!index.isValid())
    {
        return QVariant();
    }
    BaseInstance *pdata = static_cast<BaseInstance *>(index.internalPointer());
    switch (role)
    {
    case InstancePointerRole:
    {
        QVariant v = qVariantFromValue((void *)pdata);
        return v;
    }
    case InstanceIDRole:
    {
        return pdata->id();
    }
    case Qt::EditRole:
    case Qt::DisplayRole:
    {
        return pdata->name();
    }
    case Qt::AccessibleTextRole:
    {
        return tr("%1 Instance").arg(pdata->name());
    }
    case Qt::ToolTipRole:
    {
        return pdata->instanceRoot();
    }
    case Qt::DecorationRole:
    {
        return pdata->iconKey();
    }
    // HACK: see InstanceView.h in gui!
    case GroupRole:
    {
        return getInstanceGroup(pdata->id());
    }
    default:
        break;
    }
    return QVariant();
}

bool InstanceList::setData(const QModelIndex& index, const QVariant& value, int role)
{
    if (!index.isValid())
    {
        return false;
    }
    if(role != Qt::Edit