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pcmanfm-qt-packaging/libfm-qt/foldermodel.h

122 lines
3.9 KiB

/*
Copyright (C) 2012 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 FM_FOLDERMODEL_H
#define FM_FOLDERMODEL_H
#include "libfmqtglobals.h"
#include <QAbstractListModel>
#include <QIcon>
#include <QImage>
#include <libfm/fm.h>
#include <QList>
#include <QVector>
#include <QLinkedList>
#include <QPair>
#include "foldermodelitem.h"
namespace Fm {
class LIBFM_QT_API FolderModel : public QAbstractListModel {
Q_OBJECT
public:
enum Role {
FileInfoRole = Qt::UserRole
};
enum ColumnId {
ColumnFileName,
ColumnFileType,
ColumnFileSize,
ColumnFileMTime,
ColumnFileOwner,
NumOfColumns
};
public:
FolderModel();
virtual ~FolderModel();
FmFolder* folder() {
return folder_;
}
void setFolder(FmFolder* new_folder);
FmPath* path() {
return folder_ ? fm_folder_get_path(folder_) : NULL;
}
int rowCount(const QModelIndex & parent = QModelIndex()) const;
int columnCount (const QModelIndex & parent) const;
QVariant data(const QModelIndex & index, int role) const;
QVariant headerData(int section, Qt::Orientation orientation, int role) const;
QModelIndex index(int row, int column, const QModelIndex & parent = QModelIndex()) const;
QModelIndex parent( const QModelIndex & index ) const;
// void sort(int column, Qt::SortOrder order = Qt::AscendingOrder);
Qt::ItemFlags flags(const QModelIndex & index) const;
virtual QStringList mimeTypes() const;
virtual QMimeData* mimeData(const QModelIndexList & indexes) const;
virtual Qt::DropActions supportedDropActions() const;
virtual bool dropMimeData(const QMimeData* data, Qt::DropAction action, int row, int column, const QModelIndex& parent);
FmFileInfo* fileInfoFromIndex(const QModelIndex& index) const;
FolderModelItem* itemFromIndex(const QModelIndex& index) const;
QImage thumbnailFromIndex(const QModelIndex& index, int size);
void cacheThumbnails(int size);
void releaseThumbnails(int size);
Q_SIGNALS:
void thumbnailLoaded(const QModelIndex& index, int size);
public Q_SLOTS:
void updateIcons();
protected:
static void onStartLoading(FmFolder* folder, gpointer user_data);
static void onFinishLoading(FmFolder* folder, gpointer user_data);
static void onFilesAdded(FmFolder* folder, GSList* files, gpointer user_data);
static void onFilesChanged(FmFolder* folder, GSList* files, gpointer user_data);
static void onFilesRemoved(FmFolder* folder, GSList* files, gpointer user_data);
static void onThumbnailLoaded(FmThumbnailLoader *res, gpointer user_data);
void insertFiles(int row, FmFileInfoList* files);
void removeAll();
QList<FolderModelItem>::iterator findItemByPath(FmPath* path, int* row);
QList<FolderModelItem>::iterator findItemByName(const char* name, int* row);
QList<FolderModelItem>::iterator findItemByFileInfo(FmFileInfo* info, int* row);
private:
FmFolder* folder_;
// FIXME: should we use a hash table here so item lookup becomes much faster?
QList<FolderModelItem> items;
// record what size of thumbnails we should cache in an array of <size, refCount> pairs.
QVector<QPair<int, int> > thumbnailRefCounts;
QLinkedList<FmThumbnailLoader*> thumbnailResults;
};
}
#endif // FM_FOLDERMODEL_H