pollymc/logic/minecraft/ModList.cpp

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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.
*/
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#include "ModList.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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ModList::ModList(const QString &dir, const QString &list_file)
: QAbstractListModel(), m_dir(dir), m_list_file(list_file)
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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);
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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()
{
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 ModList::stopWatching()
{
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();
}
}
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void ModList::internalSort(QList<Mod> &what)
{
auto predicate = [](const Mod &left, const Mod &right)
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{
if (left.name() == right.name())
{
return left.mmc_id().localeAwareCompare(right.mmc_id()) < 0;
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}
return left.name().localeAwareCompare(right.name()) < 0;
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};
std::sort(what.begin(), what.end(), predicate);
}
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bool ModList::update()
{
if (!isValid())
return false;
QList<Mod> orderedMods;
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QList<Mod> newMods;
m_dir.refresh();
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auto folderContents = m_dir.entryInfoList();
bool orderOrStateChanged = false;
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// first, process the ordered items (if any)
OrderList listOrder = readListFile();
for (auto item : listOrder)
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{
QFileInfo infoEnabled(m_dir.filePath(item.id));
QFileInfo infoDisabled(m_dir.filePath(item.id + ".disabled"));
int idxEnabled = folderContents.indexOf(infoEnabled);
int idxDisabled = folderContents.indexOf(infoDisabled);
bool isEnabled;
// if both enabled and disabled versions are present, it's a special case...
if (idxEnabled >= 0 && idxDisabled >= 0)
{
// we only process the one we actually have in the order file.
// and exactly as we have it.
// THIS IS A CORNER CASE
isEnabled = item.enabled;
}
else
{
// only one is present.
// we pick the one that we found.
// we assume the mod was enabled/disabled by external means
isEnabled = idxEnabled >= 0;
}
int idx = isEnabled ? idxEnabled : idxDisabled;
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QFileInfo &info = isEnabled ? infoEnabled : infoDisabled;
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// 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
orderedMods.append(Mod(info));
if (isEnabled != item.enabled)
orderOrStateChanged = true;
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}
else
{
orderOrStateChanged = true;
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}
}
// if there are any untracked files...
if (folderContents.size())
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{
// the order surely changed!
for (auto entry : folderContents)
{
newMods.append(Mod(entry));
}
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internalSort(newMods);
orderedMods.append(newMods);
orderOrStateChanged = true;
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}
// otherwise, if we were already tracking some mods
else if (mods.size())
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{
// 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;
}
}
}
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beginResetModel();
mods.swap(orderedMods);
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endResetModel();
if (orderOrStateChanged && !m_list_file.isEmpty())
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{
qDebug() << "Mod list " << m_list_file << " changed!";
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saveListFile();
emit changed();
}
return true;
}
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void ModList::directoryChanged(QString path)
{
update();
}
ModList::OrderList ModList::readListFile()
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{
OrderList itemList;
if (m_list_file.isNull() || m_list_file.isEmpty())
return itemList;
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QFile textFile(m_list_file);
if (!textFile.open(QIODevice::ReadOnly | QIODevice::Text))
return OrderList();
QTextStream textStream;
textStream.setAutoDetectUnicode(true);
textStream.setDevice(&textFile);
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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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{
OrderItem it;
it.enabled = !line.endsWith(".disabled");
if (!it.enabled)
{
line.chop(9);
}
it.id = line;
itemList.append(it);
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}
}
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textFile.close();
return itemList;
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}
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;
textStream.setGenerateByteOrderMark(true);
textStream.setCodec("UTF-8");
textStream.setDevice(&textFile);
for (auto mod : mods)
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{
textStream << mod.mmc_id();
if (!mod.enabled())
textStream << ".disabled";
textStream << endl;
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}
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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{
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int idx2 = mods.indexOf(m, idx + 1);
if (idx2 != -1)
return false;
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();
update();
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return true;
}
return false;
}
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auto type = m.type();
if (type == Mod::MOD_UNKNOWN)
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return false;
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if (type == Mod::MOD_SINGLEFILE || type == Mod::MOD_ZIPFILE || type == Mod::MOD_LITEMOD)
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{
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QString newpath = FS::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();
update();
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return true;
}
else if (type == Mod::MOD_FOLDER)
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{
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QString from = filename.filePath();
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QString to = FS::PathCombine(m_dir.path(), filename.fileName());
if (!FS::copy(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();
update();
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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 3;
}
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();
switch (role)
{
case Qt::DisplayRole:
switch (column)
{
case NameColumn:
return mods[row].name();
case VersionColumn:
return mods[row].version();
default:
return QVariant();
}
case Qt::ToolTipRole:
return mods[row].mmc_id();
case Qt::CheckStateRole:
switch (column)
{
case ActiveColumn:
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return mods[row].enabled() ? Qt::Checked : Qt::Unchecked;
default:
return QVariant();
}
default:
return QVariant();
}
}
bool ModList::setData(const QModelIndex &index, const QVariant &value, int role)
{
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 ModList::headerData(int section, Qt::Orientation orientation, int role) const
{
switch (role)
{
case Qt::DisplayRole:
switch (section)
{
case ActiveColumn:
return QString();
case NameColumn:
return tr("Name");
case VersionColumn:
return tr("Version");
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.");
default:
return QVariant();
}
default:
return QVariant();
}
return QVariant();
}
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::ItemIsUserCheckable | Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled |
defaultFlags;
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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;
qDebug() << "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);
qDebug() << "installing: " << filename;
// if there is no ordering, re-sort the list
if (m_list_file.isEmpty())
{
beginResetModel();
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internalSort(mods);
endResetModel();
}
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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();
qDebug() << "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;
}