1e2f0ab308
This moves the QSortFilterProxyModel to the resource model files, acessible via a factory method, and moves the sorting and filtering to the objects themselves, decoupling the code a bit. This also adds a basic implementation of methods in the ResourceFolderModel, simplifying the process of constructing a new model from it. Signed-off-by: flow <flowlnlnln@gmail.com>
445 lines
13 KiB
C++
445 lines
13 KiB
C++
#include "ResourceFolderModel.h"
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#include <QDebug>
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#include <QMimeData>
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#include <QThreadPool>
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#include <QUrl>
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#include "FileSystem.h"
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#include "minecraft/mod/tasks/BasicFolderLoadTask.h"
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#include "tasks/Task.h"
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ResourceFolderModel::ResourceFolderModel(QDir dir, QObject* parent) : QAbstractListModel(parent), m_dir(dir), m_watcher(this)
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{
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m_dir.setFilter(QDir::Readable | QDir::NoDotAndDotDot | QDir::Files | QDir::Dirs);
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m_dir.setSorting(QDir::Name | QDir::IgnoreCase | QDir::LocaleAware);
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connect(&m_watcher, &QFileSystemWatcher::directoryChanged, this, &ResourceFolderModel::directoryChanged);
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}
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bool ResourceFolderModel::startWatching(const QStringList paths)
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{
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if (m_is_watching)
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return false;
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update();
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auto couldnt_be_watched = m_watcher.addPaths(paths);
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for (auto path : paths) {
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if (couldnt_be_watched.contains(path))
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qDebug() << "Failed to start watching " << path;
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else
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qDebug() << "Started watching " << path;
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}
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m_is_watching = !m_is_watching;
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return m_is_watching;
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}
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bool ResourceFolderModel::stopWatching(const QStringList paths)
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{
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if (!m_is_watching)
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return false;
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auto couldnt_be_stopped = m_watcher.removePaths(paths);
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for (auto path : paths) {
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if (couldnt_be_stopped.contains(path))
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qDebug() << "Failed to stop watching " << path;
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else
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qDebug() << "Stopped watching " << path;
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}
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m_is_watching = !m_is_watching;
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return !m_is_watching;
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}
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bool ResourceFolderModel::installResource(QString original_path)
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{
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if (!m_can_interact) {
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return false;
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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
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original_path = FS::NormalizePath(original_path);
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QFileInfo file_info(original_path);
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if (!file_info.exists() || !file_info.isReadable()) {
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qWarning() << "Caught attempt to install non-existing file or file-like object:" << original_path;
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return false;
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}
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qDebug() << "Installing: " << file_info.absoluteFilePath();
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Resource resource(file_info);
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if (!resource.valid()) {
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qWarning() << original_path << "is not a valid resource. Ignoring it.";
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return false;
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}
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auto new_path = FS::NormalizePath(m_dir.filePath(file_info.fileName()));
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if (original_path == new_path) {
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qWarning() << "Overwriting the mod (" << original_path << ") with itself makes no sense...";
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return false;
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}
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switch (resource.type()) {
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case ResourceType::SINGLEFILE:
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case ResourceType::ZIPFILE:
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case ResourceType::LITEMOD: {
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if (QFile::exists(new_path) || QFile::exists(new_path + QString(".disabled"))) {
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if (!QFile::remove(new_path)) {
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qCritical() << "Cleaning up new location (" << new_path << ") was unsuccessful!";
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return false;
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}
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qDebug() << new_path << "has been deleted.";
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}
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if (!QFile::copy(original_path, new_path)) {
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qCritical() << "Copy from" << original_path << "to" << new_path << "has failed.";
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return false;
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}
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FS::updateTimestamp(new_path);
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QFileInfo new_path_file_info(new_path);
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resource.setFile(new_path_file_info);
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update();
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return true;
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}
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case ResourceType::FOLDER: {
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if (QFile::exists(new_path)) {
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qDebug() << "Ignoring folder '" << original_path << "', it would merge with" << new_path;
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return false;
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}
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if (!FS::copy(original_path, new_path)()) {
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qWarning() << "Copy of folder from" << original_path << "to" << new_path << "has (potentially partially) failed.";
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return false;
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}
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QFileInfo newpathInfo(new_path);
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resource.setFile(newpathInfo);
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update();
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return true;
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}
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default:
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break;
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}
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return false;
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}
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bool ResourceFolderModel::uninstallResource(QString file_name)
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{
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for (auto resource : m_resources) {
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if (resource->fileinfo().fileName() == file_name)
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return resource->destroy();
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}
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return false;
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}
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bool ResourceFolderModel::deleteResources(const QModelIndexList& indexes)
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{
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if (!m_can_interact)
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return false;
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if (indexes.isEmpty())
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return true;
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for (auto i : indexes) {
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if (i.column() != 0) {
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continue;
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}
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auto resource = m_resources.at(i.row());
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resource->destroy();
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}
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return true;
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}
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bool ResourceFolderModel::update()
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{
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// Already updating, so we schedule a future update and return.
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if (m_current_update_task) {
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m_scheduled_update = true;
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return false;
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}
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m_current_update_task.reset(createUpdateTask());
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if (!m_current_update_task)
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return false;
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connect(m_current_update_task.get(), &Task::succeeded, this, &ResourceFolderModel::onUpdateSucceeded,
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Qt::ConnectionType::QueuedConnection);
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connect(m_current_update_task.get(), &Task::failed, this, &ResourceFolderModel::onUpdateFailed, Qt::ConnectionType::QueuedConnection);
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auto* thread_pool = QThreadPool::globalInstance();
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thread_pool->start(m_current_update_task.get());
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return true;
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}
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void ResourceFolderModel::resolveResource(Resource::Ptr res)
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{
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if (!res->shouldResolve()) {
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return;
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}
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auto task = createParseTask(*res);
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if (!task)
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return;
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m_ticket_mutex.lock();
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int ticket = m_next_resolution_ticket;
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m_next_resolution_ticket += 1;
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m_ticket_mutex.unlock();
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res->setResolving(true, ticket);
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m_active_parse_tasks.insert(ticket, task);
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connect(
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task, &Task::succeeded, this, [=] { onParseSucceeded(ticket, res->internal_id()); }, Qt::ConnectionType::QueuedConnection);
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connect(
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task, &Task::failed, this, [=] { onParseFailed(ticket, res->internal_id()); }, Qt::ConnectionType::QueuedConnection);
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auto* thread_pool = QThreadPool::globalInstance();
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thread_pool->start(task);
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}
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void ResourceFolderModel::onUpdateSucceeded()
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{
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auto update_results = static_cast<BasicFolderLoadTask*>(m_current_update_task.get())->result();
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auto& new_resources = update_results->resources;
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#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
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auto current_list = m_resources_index.keys();
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QSet<QString> current_set(current_list.begin(), current_list.end());
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auto new_list = new_resources.keys();
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QSet<QString> new_set(new_list.begin(), new_list.end());
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#else
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QSet<QString> current_set(m_resources_index.keys().toSet());
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QSet<QString> new_set(new_resources.keys().toSet());
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#endif
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applyUpdates(current_set, new_set, new_resources);
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update_results.reset();
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m_current_update_task->deleteLater();
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m_current_update_task.reset();
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emit updateFinished();
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if (m_scheduled_update) {
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m_scheduled_update = false;
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update();
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}
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}
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void ResourceFolderModel::onParseSucceeded(int ticket, QString resource_id)
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{
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auto iter = m_active_parse_tasks.constFind(ticket);
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if (iter == m_active_parse_tasks.constEnd())
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return;
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(*iter)->deleteLater();
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m_active_parse_tasks.remove(ticket);
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int row = m_resources_index[resource_id];
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emit dataChanged(index(row), index(row, columnCount(QModelIndex()) - 1));
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}
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Task* ResourceFolderModel::createUpdateTask()
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{
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return new BasicFolderLoadTask(m_dir);
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}
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void ResourceFolderModel::directoryChanged(QString path)
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{
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update();
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}
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Qt::DropActions ResourceFolderModel::supportedDropActions() const
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{
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// copy from outside, move from within and other resource lists
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return Qt::CopyAction | Qt::MoveAction;
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}
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Qt::ItemFlags ResourceFolderModel::flags(const QModelIndex& index) const
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{
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Qt::ItemFlags defaultFlags = QAbstractListModel::flags(index);
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auto flags = defaultFlags;
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if (!m_can_interact) {
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flags &= ~Qt::ItemIsDropEnabled;
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} else {
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flags |= Qt::ItemIsDropEnabled;
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if (index.isValid()) {
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flags |= Qt::ItemIsUserCheckable;
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}
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}
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return flags;
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}
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QStringList ResourceFolderModel::mimeTypes() const
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{
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QStringList types;
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types << "text/uri-list";
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return types;
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}
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bool ResourceFolderModel::dropMimeData(const QMimeData* data, Qt::DropAction action, int, int, const QModelIndex&)
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{
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if (action == Qt::IgnoreAction) {
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return true;
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}
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// check if the action is supported
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if (!data || !(action & supportedDropActions())) {
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return false;
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}
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// files dropped from outside?
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if (data->hasUrls()) {
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auto urls = data->urls();
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for (auto url : urls) {
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// only local files may be dropped...
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if (!url.isLocalFile()) {
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continue;
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}
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// TODO: implement not only copy, but also move
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// FIXME: handle errors here
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installResource(url.toLocalFile());
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}
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return true;
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}
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return false;
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}
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bool ResourceFolderModel::validateIndex(const QModelIndex& index) const
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{
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if (!index.isValid())
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return false;
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size_t row = index.row();
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if (row < 0 || row >= size())
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return false;
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return true;
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}
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QVariant ResourceFolderModel::data(const QModelIndex& index, int role) const
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{
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if (!validateIndex(index))
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return {};
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int row = index.row();
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int column = index.column();
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switch (role) {
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case Qt::DisplayRole:
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switch (column) {
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case NAME_COLUMN:
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return m_resources[row]->name();
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case DATE_COLUMN:
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return m_resources[row]->dateTimeChanged();
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default:
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return {};
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}
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case Qt::ToolTipRole:
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return m_resources[row]->internal_id();
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default:
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return {};
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}
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}
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QVariant ResourceFolderModel::headerData(int section, Qt::Orientation orientation, int role) const
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{
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switch (role) {
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case Qt::DisplayRole:
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switch (section) {
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case NAME_COLUMN:
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return tr("Name");
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case DATE_COLUMN:
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return tr("Last modified");
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default:
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return {};
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}
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case Qt::ToolTipRole: {
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switch (section) {
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case NAME_COLUMN:
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return tr("The name of the resource.");
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case DATE_COLUMN:
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return tr("The date and time this resource was last changed (or added).");
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default:
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return {};
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}
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}
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default:
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break;
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}
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return {};
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}
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QSortFilterProxyModel* ResourceFolderModel::createFilterProxyModel(QObject* parent)
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{
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return new ProxyModel(parent);
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}
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SortType ResourceFolderModel::columnToSortKey(size_t column) const
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{
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Q_ASSERT(m_column_sort_keys.size() == columnCount());
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return m_column_sort_keys.at(column);
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}
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void ResourceFolderModel::enableInteraction(bool enabled)
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{
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if (m_can_interact == enabled)
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return;
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m_can_interact = enabled;
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if (size())
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emit dataChanged(index(0), index(size() - 1));
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}
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/* Standard Proxy Model for createFilterProxyModel */
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[[nodiscard]] bool ResourceFolderModel::ProxyModel::filterAcceptsRow(int source_row, const QModelIndex& source_parent) const
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{
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auto* model = qobject_cast<ResourceFolderModel*>(sourceModel());
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if (!model)
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return true;
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const auto& resource = model->at(source_row);
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return resource.applyFilter(filterRegularExpression());
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}
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[[nodiscard]] bool ResourceFolderModel::ProxyModel::lessThan(const QModelIndex& source_left, const QModelIndex& source_right) const
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{
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auto* model = qobject_cast<ResourceFolderModel*>(sourceModel());
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if (!model || !source_left.isValid() || !source_right.isValid() || source_left.column() != source_right.column()) {
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return QSortFilterProxyModel::lessThan(source_left, source_right);
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}
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// we are now guaranteed to have two valid indexes in the same column... we love the provided invariants unconditionally and
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// proceed.
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auto column_sort_key = model->columnToSortKey(source_left.column());
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auto const& resource_left = model->at(source_left.row());
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auto const& resource_right = model->at(source_right.row());
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auto compare_result = resource_left.compare(resource_right, column_sort_key);
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if (compare_result.first == 0)
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return QSortFilterProxyModel::lessThan(source_left, source_right);
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if (compare_result.second || sortOrder() != Qt::DescendingOrder)
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return (compare_result.first < 0);
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return (compare_result.first > 0);
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}
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