sneedmc/api/logic/minecraft/SimpleModList.cpp

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/* Copyright 2013-2018 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.
*/
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#include "SimpleModList.h"
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#include <FileSystem.h>
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#include <QMimeData>
#include <QUrl>
#include <QUuid>
#include <QString>
#include <QFileSystemWatcher>
#include <QDebug>
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SimpleModList::SimpleModList(const QString &dir) : QAbstractListModel(), m_dir(dir)
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{
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FS::ensureFolderPathExists(m_dir.absolutePath());
m_dir.setFilter(QDir::Readable | QDir::NoDotAndDotDot | QDir::Files | QDir::Dirs |
QDir::NoSymLinks);
m_dir.setSorting(QDir::Name | QDir::IgnoreCase | QDir::LocaleAware);
m_watcher = new QFileSystemWatcher(this);
connect(m_watcher, SIGNAL(directoryChanged(QString)), this, SLOT(directoryChanged(QString)));
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}
void SimpleModList::startWatching()
{
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if(is_watching)
return;
update();
is_watching = m_watcher->addPath(m_dir.absolutePath());
if (is_watching)
{
qDebug() << "Started watching " << m_dir.absolutePath();
}
else
{
qDebug() << "Failed to start watching " << m_dir.absolutePath();
}
}
void SimpleModList::stopWatching()
{
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if(!is_watching)
return;
is_watching = !m_watcher->removePath(m_dir.absolutePath());
if (!is_watching)
{
qDebug() << "Stopped watching " << m_dir.absolutePath();
}
else
{
qDebug() << "Failed to stop watching " << m_dir.absolutePath();
}
}
bool SimpleModList::update()
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{
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if (!isValid())
return false;
QList<Mod> orderedMods;
QList<Mod> newMods;
m_dir.refresh();
auto folderContents = m_dir.entryInfoList();
bool orderOrStateChanged = false;
// if there are any untracked files...
if (folderContents.size())
{
// the order surely changed!
for (auto entry : folderContents)
{
newMods.append(Mod(entry));
}
orderedMods.append(newMods);
orderOrStateChanged = true;
}
// otherwise, if we were already tracking some mods
else if (mods.size())
{
// if the number doesn't match, order changed.
if (mods.size() != orderedMods.size())
orderOrStateChanged = true;
// if it does match, compare the mods themselves
else
for (int i = 0; i < mods.size(); i++)
{
if (!mods[i].strongCompare(orderedMods[i]))
{
orderOrStateChanged = true;
break;
}
}
}
beginResetModel();
mods.swap(orderedMods);
endResetModel();
if (orderOrStateChanged)
{
emit changed();
}
return true;
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}
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void SimpleModList::directoryChanged(QString path)
{
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update();
}
bool SimpleModList::isValid()
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{
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return m_dir.exists() && m_dir.isReadable();
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}
bool SimpleModList::installMod(const QString &filename)
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{
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// NOTE: fix for GH-1178: remove trailing slash to avoid issues with using the empty result of QFileInfo::fileName
QFileInfo fileinfo(FS::NormalizePath(filename));
qDebug() << "installing: " << fileinfo.absoluteFilePath();
if (!fileinfo.exists() || !fileinfo.isReadable())
{
return false;
}
Mod m(fileinfo);
if (!m.valid())
return false;
auto type = m.type();
if (type == Mod::MOD_UNKNOWN)
return false;
if (type == Mod::MOD_SINGLEFILE || type == Mod::MOD_ZIPFILE || type == Mod::MOD_LITEMOD)
{
QString newpath = FS::PathCombine(m_dir.path(), fileinfo.fileName());
if (!QFile::copy(fileinfo.filePath(), newpath))
return false;
FS::updateTimestamp(newpath);
m.repath(newpath);
update();
return true;
}
else if (type == Mod::MOD_FOLDER)
{
QString from = fileinfo.filePath();
QString to = FS::PathCombine(m_dir.path(), fileinfo.fileName());
if (!FS::copy(from, to)())
return false;
m.repath(to);
update();
return true;
}
return false;
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}
bool SimpleModList::enableMods(const QModelIndexList& indexes, bool enable)
{
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if(indexes.isEmpty())
return true;
for (auto i: indexes)
{
Mod &m = mods[i.row()];
m.enable(enable);
emit dataChanged(i, i);
}
emit changed();
return true;
}
bool SimpleModList::deleteMods(const QModelIndexList& indexes)
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{
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if(indexes.isEmpty())
return true;
for (auto i: indexes)
{
Mod &m = mods[i.row()];
m.destroy();
}
emit changed();
return true;
}
int SimpleModList::columnCount(const QModelIndex &parent) const
{
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return NUM_COLUMNS;
}
QVariant SimpleModList::data(const QModelIndex &index, int role) const
{
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if (!index.isValid())
return QVariant();
int row = index.row();
int column = index.column();
if (row < 0 || row >= mods.size())
return QVariant();
switch (role)
{
case Qt::DisplayRole:
switch (column)
{
case NameColumn:
return mods[row].name();
case VersionColumn:
return mods[row].version();
case DateColumn:
return mods[row].dateTimeChanged();
default:
return QVariant();
}
case Qt::ToolTipRole:
return mods[row].mmc_id();
case Qt::CheckStateRole:
switch (column)
{
case ActiveColumn:
return mods[row].enabled() ? Qt::Checked : Qt::Unchecked;
default:
return QVariant();
}
default:
return QVariant();
}
}
bool SimpleModList::setData(const QModelIndex &index, const QVariant &value, int role)
{
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if (index.row() < 0 || index.row() >= rowCount(index) || !index.isValid())
{
return false;
}
if (role == Qt::CheckStateRole)
{
auto &mod = mods[index.row()];
if (mod.enable(!mod.enabled()))
{
emit dataChanged(index, index);
return true;
}
}
return false;
}
QVariant SimpleModList::headerData(int section, Qt::Orientation orientation, int role) const
{
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switch (role)
{
case Qt::DisplayRole:
switch (section)
{
case ActiveColumn:
return QString();
case NameColumn:
return tr("Name");
case VersionColumn:
return tr("Version");
case DateColumn:
return tr("Last changed");
default:
return QVariant();
}
case Qt::ToolTipRole:
switch (section)
{
case ActiveColumn:
return tr("Is the mod enabled?");
case NameColumn:
return tr("The name of the mod.");
case VersionColumn:
return tr("The version of the mod.");
case DateColumn:
return tr("The date and time this mod was last changed (or added).");
default:
return QVariant();
}
default:
return QVariant();
}
return QVariant();
}
Qt::ItemFlags SimpleModList::flags(const QModelIndex &index) const
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{
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Qt::ItemFlags defaultFlags = QAbstractListModel::flags(index);
if (index.isValid())
return Qt::ItemIsUserCheckable | Qt::ItemIsDropEnabled |
defaultFlags;
else
return Qt::ItemIsDropEnabled | defaultFlags;
}
Qt::DropActions SimpleModList::supportedDropActions() const
{
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// copy from outside, move from within and other mod lists
return Qt::CopyAction | Qt::MoveAction;
}
QStringList SimpleModList::mimeTypes() const
{
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QStringList types;
types << "text/uri-list";
return types;
}
bool SimpleModList::dropMimeData(const QMimeData* data, Qt::DropAction action, int, int, const QModelIndex&)
{
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if (action == Qt::IgnoreAction)
{
return true;
}
// check if the action is supported
if (!data || !(action & supportedDropActions()))
{
return false;
}
// files dropped from outside?
if (data->hasUrls())
{
bool was_watching = is_watching;
if (was_watching)
{
stopWatching();
}
auto urls = data->urls();
for (auto url : urls)
{
// only local files may be dropped...
if (!url.isLocalFile())
{
continue;
}
// TODO: implement not only copy, but also move
// FIXME: handle errors here
installMod(url.toLocalFile());
}
if (was_watching)
{
startWatching();
}
return true;
}
return false;
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}