pollymc/logic/ModList.cpp

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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.
*/
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#include "ModList.h"
#include "LegacyInstance.h"
#include <pathutils.h>
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#include <QMimeData>
#include <QUrl>
#include <QUuid>
#include <QFileSystemWatcher>
#include "logger/QsLog.h"
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ModList::ModList(const QString &dir, const QString &list_file)
: QAbstractListModel(), m_dir(dir), m_list_file(list_file)
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{
m_dir.setFilter(QDir::Readable | QDir::NoDotAndDotDot | QDir::Files | QDir::Dirs |
QDir::NoSymLinks);
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m_dir.setSorting(QDir::Name);
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m_list_id = QUuid::createUuid().toString();
m_watcher = new QFileSystemWatcher(this);
is_watching = false;
connect(m_watcher, SIGNAL(directoryChanged(QString)), this,
SLOT(directoryChanged(QString)));
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}
void ModList::startWatching()
{
is_watching = m_watcher->addPath(m_dir.absolutePath());
if (is_watching)
{
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QLOG_INFO() << "Started watching " << m_dir.absolutePath();
}
else
{
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QLOG_INFO() << "Failed to start watching " << m_dir.absolutePath();
}
}
void ModList::stopWatching()
{
is_watching = !m_watcher->removePath(m_dir.absolutePath());
if (!is_watching)
{
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QLOG_INFO() << "Stopped watching " << m_dir.absolutePath();
}
else
{
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QLOG_INFO() << "Failed to stop watching " << m_dir.absolutePath();
}
}
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bool ModList::update()
{
if (!isValid())
return false;
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QList<Mod> newMods;
m_dir.refresh();
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auto folderContents = m_dir.entryInfoList();
bool orderWasInvalid = false;
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// first, process the ordered items (if any)
QStringList listOrder = readListFile();
for (auto item : listOrder)
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{
QFileInfo info(m_dir.filePath(item));
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int idx = folderContents.indexOf(info);
// if the file from the index file exists
if (idx != -1)
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{
// remove from the actual folder contents list
folderContents.takeAt(idx);
// append the new mod
newMods.append(Mod(info));
}
else
{
orderWasInvalid = true;
}
}
for (auto entry : folderContents)
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{
newMods.append(Mod(entry));
}
if (mods.size() != newMods.size())
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{
orderWasInvalid = true;
}
else
for (int i = 0; i < mods.size(); i++)
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{
if (!mods[i].strongCompare(newMods[i]))
{
orderWasInvalid = true;
break;
}
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}
beginResetModel();
mods.swap(newMods);
endResetModel();
if (orderWasInvalid)
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{
saveListFile();
emit changed();
}
return true;
}
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void ModList::directoryChanged(QString path)
{
update();
}
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QStringList ModList::readListFile()
{
QStringList stringList;
if (m_list_file.isNull() || m_list_file.isEmpty())
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return stringList;
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QFile textFile(m_list_file);
if (!textFile.open(QIODevice::ReadOnly | QIODevice::Text))
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return QStringList();
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QTextStream textStream(&textFile);
while (true)
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{
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QString line = textStream.readLine();
if (line.isNull() || line.isEmpty())
break;
else
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{
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stringList.append(line);
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}
}
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textFile.close();
return stringList;
}
bool ModList::saveListFile()
{
if (m_list_file.isNull() || m_list_file.isEmpty())
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return false;
QFile textFile(m_list_file);
if (!textFile.open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Truncate))
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return false;
QTextStream textStream(&textFile);
for (auto mod : mods)
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{
auto pathname = mod.filename();
QString filename = pathname.fileName();
textStream << filename << endl;
}
textFile.close();
return false;
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}
bool ModList::isValid()
{
return m_dir.exists() && m_dir.isReadable();
}
bool ModList::installMod(const QFileInfo &filename, int index)
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{
if (!filename.exists() || !filename.isReadable() || index < 0)
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{
return false;
}
Mod m(filename);
if (!m.valid())
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return false;
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// if it's already there, replace the original mod (in place)
int idx = mods.indexOf(m);
if (idx != -1)
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{
if (mods[idx].replace(m))
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{
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auto left = this->index(index);
auto right = this->index(index, columnCount(QModelIndex()) - 1);
emit dataChanged(left, right);
saveListFile();
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emit changed();
return true;
}
return false;
}
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auto type = m.type();
if (type == Mod::MOD_UNKNOWN)
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return false;
if (type == Mod::MOD_SINGLEFILE || type == Mod::MOD_ZIPFILE)
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{
QString newpath = PathCombine(m_dir.path(), filename.fileName());
if (!QFile::copy(filename.filePath(), newpath))
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return false;
m.repath(newpath);
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beginInsertRows(QModelIndex(), index, index);
mods.insert(index, m);
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endInsertRows();
saveListFile();
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emit changed();
return true;
}
else if (type == Mod::MOD_FOLDER)
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{
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QString from = filename.filePath();
QString to = PathCombine(m_dir.path(), filename.fileName());
if (!copyPath(from, to))
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return false;
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m.repath(to);
beginInsertRows(QModelIndex(), index, index);
mods.insert(index, m);
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endInsertRows();
saveListFile();
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emit changed();
return true;
}
return false;
}
bool ModList::deleteMod(int index)
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{
if (index >= mods.size() || index < 0)
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return false;
Mod &m = mods[index];
if (m.destroy())
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{
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beginRemoveRows(QModelIndex(), index, index);
mods.removeAt(index);
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endRemoveRows();
saveListFile();
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emit changed();
return true;
}
return false;
}
bool ModList::deleteMods(int first, int last)
{
for (int i = first; i <= last; i++)
{
Mod &m = mods[i];
m.destroy();
}
beginRemoveRows(QModelIndex(), first, last);
mods.erase(mods.begin() + first, mods.begin() + last + 1);
endRemoveRows();
saveListFile();
emit changed();
return true;
}
bool ModList::moveModTo(int from, int to)
{
if (from < 0 || from >= mods.size())
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return false;
if (to >= rowCount())
to = rowCount() - 1;
if (to == -1)
to = rowCount() - 1;
if (from == to)
return false;
int togap = to > from ? to + 1 : to;
beginMoveRows(QModelIndex(), from, from, QModelIndex(), togap);
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mods.move(from, to);
endMoveRows();
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saveListFile();
emit changed();
return true;
}
bool ModList::moveModUp(int from)
{
if (from > 0)
return moveModTo(from, from - 1);
return false;
}
bool ModList::moveModsUp(int first, int last)
{
if (first == 0)
return false;
beginMoveRows(QModelIndex(), first, last, QModelIndex(), first - 1);
mods.move(first - 1, last);
endMoveRows();
saveListFile();
emit changed();
return true;
}
bool ModList::moveModDown(int from)
{
if (from < 0)
return false;
if (from < mods.size() - 1)
return moveModTo(from, from + 1);
return false;
}
bool ModList::moveModsDown(int first, int last)
{
if (last == mods.size() - 1)
return false;
beginMoveRows(QModelIndex(), first, last, QModelIndex(), last + 2);
mods.move(last + 1, first);
endMoveRows();
saveListFile();
emit changed();
return true;
}
int ModList::columnCount(const QModelIndex &parent) const
{
return 2;
}
QVariant ModList::data(const QModelIndex &index, int role) const
{
if (!index.isValid())
return QVariant();
int row = index.row();
int column = index.column();
if (row < 0 || row >= mods.size())
return QVariant();
if (role != Qt::DisplayRole)
return QVariant();
switch (column)
{
case 0:
return mods[row].name();
case 1:
return mods[row].version();
case 2:
return mods[row].mcversion();
default:
return QVariant();
}
}
QVariant ModList::headerData(int section, Qt::Orientation orientation, int role) const
{
if (role != Qt::DisplayRole || orientation != Qt::Horizontal)
return QVariant();
switch (section)
{
case 0:
return QString("Name");
case 1:
return QString("Version");
case 2:
return QString("Minecraft");
}
return QString();
}
Qt::ItemFlags ModList::flags(const QModelIndex &index) const
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{
Qt::ItemFlags defaultFlags = QAbstractListModel::flags(index);
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if (index.isValid())
return Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled | defaultFlags;
else
return Qt::ItemIsDropEnabled | defaultFlags;
}
QStringList ModList::mimeTypes() const
{
QStringList types;
types << "text/uri-list";
types << "text/plain";
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return types;
}
Qt::DropActions ModList::supportedDropActions() const
{
// copy from outside, move from within and other mod lists
return Qt::CopyAction | Qt::MoveAction;
}
Qt::DropActions ModList::supportedDragActions() const
{
// move to other mod lists or VOID
return Qt::MoveAction;
}
QMimeData *ModList::mimeData(const QModelIndexList &indexes) const
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{
QMimeData *data = new QMimeData();
if (indexes.size() == 0)
return data;
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auto idx = indexes[0];
int row = idx.row();
if (row < 0 || row >= mods.size())
return data;
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QStringList params;
params << m_list_id << QString::number(row);
data->setText(params.join('|'));
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return data;
}
bool ModList::dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column,
const QModelIndex &parent)
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{
if (action == Qt::IgnoreAction)
return true;
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// check if the action is supported
if (!data || !(action & supportedDropActions()))
return false;
if (parent.isValid())
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{
row = parent.row();
column = parent.column();
}
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if (row > rowCount())
row = rowCount();
if (row == -1)
row = rowCount();
if (column == -1)
column = 0;
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QLOG_INFO() << "Drop row: " << row << " column: " << column;
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// files dropped from outside?
if (data->hasUrls())
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{
bool was_watching = is_watching;
if (was_watching)
stopWatching();
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auto urls = data->urls();
for (auto url : urls)
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{
// only local files may be dropped...
if (!url.isLocalFile())
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continue;
QString filename = url.toLocalFile();
installMod(filename, row);
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QLOG_INFO() << "installing: " << filename;
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}
if (was_watching)
startWatching();
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return true;
}
else if (data->hasText())
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{
QString sourcestr = data->text();
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auto list = sourcestr.split('|');
if (list.size() != 2)
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return false;
QString remoteId = list[0];
int remoteIndex = list[1].toInt();
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QLOG_INFO() << "move: " << sourcestr;
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// no moving of things between two lists
if (remoteId != m_list_id)
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return false;
// no point moving to the same place...
if (row == remoteIndex)
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return false;
// otherwise, move the mod :D
moveModTo(remoteIndex, row);
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return true;
}
return false;
}