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/*
* Copyright (C) 2016 Hong Jen Yee (PCMan) <pcman.tw@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef __LIBFM2_QT_FM_FOLDER_H__
#define __LIBFM2_QT_FM_FOLDER_H__
#include <gio/gio.h>
#include <cstdint>
#include <memory>
#include <vector>
#include <unordered_map>
#include <mutex>
#include <functional>
#include <QObject>
#include <QtGlobal>
#include "../libfmqtglobals.h"
#include "gioptrs.h"
#include "fileinfo.h"
#include "job.h"
#include "volumemanager.h"
namespace Fm {
class DirListJob;
class FileSystemInfoJob;
class FileInfoJob;
class LIBFM_QT_API Folder: public QObject {
Q_OBJECT
public:
explicit Folder();
explicit Folder(const FilePath& path);
virtual ~Folder();
static std::shared_ptr<Folder> fromPath(const FilePath& path);
static std::shared_ptr<Folder> findByPath(const FilePath& path);
bool makeDirectory(const char* name, GError** error);
void queryFilesystemInfo();
bool getFilesystemInfo(uint64_t* total_size, uint64_t* free_size) const;
void reload();
bool isIncremental() const;
bool isValid() const;
bool isLoaded() const;
std::shared_ptr<const FileInfo> fileByName(const char* name) const;
bool isEmpty() const;
bool hasFileMonitor() const;
FileInfoList files() const;
const FilePath& path() const;
const std::shared_ptr<const FileInfo> &info() const;
bool hadCutFilesUnset();
bool hasCutFiles();
void setCutFiles(const std::shared_ptr<const HashSet>& cutFilesHashSet);
void forEachFile(std::function<void (const std::shared_ptr<const FileInfo>&)> func) const {
std::lock_guard<std::mutex> lock{mutex_};
for(auto it = files_.begin(); it != files_.end(); ++it) {
func(it->second);
}
}
Q_SIGNALS:
void startLoading();
void finishLoading();
void filesAdded(FileInfoList& addedFiles);
void filesChanged(std::vector<FileInfoPair>& changePairs);
void filesRemoved(FileInfoList& removedFiles);
void removed();
void changed();
void unmount();
void contentChanged();
void fileSystemChanged();
// FIXME: this API design is bad. We leave this here to be compatible with the old libfm C API.
// It might be better to remember the error state while loading the folder, and let the user of the
// API handle the error on finish.
void error(const GErrorPtr& err, Job::ErrorSeverity severity, Job::ErrorAction& response);
private:
static void _onFileChangeEvents(GFileMonitor* monitor, GFile* file, GFile* other_file, GFileMonitorEvent event_type, Folder* _this) {
_this->onFileChangeEvents(monitor, file, other_file, event_type);
}
void onFileChangeEvents(GFileMonitor* monitor, GFile* file, GFile* other_file, GFileMonitorEvent event_type);
void onDirChanged(GFileMonitorEvent event_type);
void queueUpdate();
void queueReload();
bool eventFileAdded(const FilePath &path);
bool eventFileChanged(const FilePath &path);
void eventFileDeleted(const FilePath &path);
private Q_SLOTS:
void processPendingChanges();
void onDirListFinished();
void onFileSystemInfoFinished();
void onFileInfoFinished();
void onIdleReload();
void onMountAdded(const Mount& mnt);
void onMountRemoved(const Mount& mnt);
private:
FilePath dirPath_;
GFileMonitorPtr dirMonitor_;
std::shared_ptr<const FileInfo> dirInfo_;
DirListJob* dirlist_job;
std::vector<FileInfoJob*> fileinfoJobs_;
FileSystemInfoJob* fsInfoJob_;
std::shared_ptr<VolumeManager> volumeManager_;
/* for file monitor */
bool has_idle_reload_handler;
bool has_idle_update_handler;
FilePathList paths_to_add;
FilePathList paths_to_update;
FilePathList paths_to_del;
// GSList* pending_jobs;
bool pending_change_notify;
bool filesystem_info_pending;
bool wants_incremental;
bool stop_emission; /* don't set it 1 bit to not lock other bits */
// NOTE: Here, FileInfo::path().baseName().get() should be used as the key value, not FileInfo::name(),
// because the latter is not always the same as the former and the former will be used for comparison.
std::unordered_map<const std::string, std::shared_ptr<const FileInfo>, std::hash<std::string>> files_;
/* filesystem info - set in query thread, read in main */
uint64_t fs_total_size;
uint64_t fs_free_size;
GCancellablePtr fs_size_cancellable;
bool has_fs_info : 1;
bool defer_content_test : 1;
static std::unordered_map<FilePath, std::weak_ptr<Folder>, FilePathHash> cache_;
static QString cutFilesDirPath_;
static QString lastCutFilesDirPath_;
static std::shared_ptr<const HashSet> cutFilesHashSet_;
static std::mutex mutex_;
};
}
#endif // __LIBFM_QT_FM2_FOLDER_H__
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