transmission/qt/FileTreeModel.h

94 lines
2.8 KiB
C++

/*
* This file Copyright (C) 2009-2015 Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
*/
#pragma once
#include <cstdint> // uint64_t
#include <QAbstractItemModel>
#include <QMap>
#include <QSet>
class FileTreeItem;
class FileTreeModel final : public QAbstractItemModel
{
Q_OBJECT
public:
enum
{
COL_NAME,
COL_SIZE,
COL_PROGRESS,
COL_WANTED,
COL_PRIORITY,
//
NUM_COLUMNS
};
enum Role
{
SortRole = Qt::UserRole,
FileIndexRole,
WantedRole,
CompleteRole
};
public:
FileTreeModel(QObject* parent = nullptr, bool is_editable = true);
~FileTreeModel();
void setEditable(bool editable);
void clear();
void addFile(int index, QString const& filename, bool wanted, int priority, uint64_t size, uint64_t have,
bool torrent_changed);
bool openFile(QModelIndex const& index);
void twiddleWanted(QModelIndexList const& indices);
void twiddlePriority(QModelIndexList const& indices);
void setWanted(QModelIndexList const& indices, bool wanted);
void setPriority(QModelIndexList const& indices, int priority);
QModelIndex parent(QModelIndex const& child, int column) const;
// QAbstractItemModel
QVariant data(QModelIndex const& index, int role = Qt::DisplayRole) const override;
Qt::ItemFlags flags(QModelIndex const& index) const override;
QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override;
QModelIndex index(int row, int column, QModelIndex const& parent = {}) const override;
QModelIndex parent(QModelIndex const& child) const override;
int rowCount(QModelIndex const& parent = {}) const override;
int columnCount(QModelIndex const& parent = {}) const override;
bool setData(QModelIndex const& index, QVariant const& value, int role = Qt::EditRole) override;
signals:
void priorityChanged(QSet<int> const& file_indices, int);
void wantedChanged(QSet<int> const& file_indices, bool);
void pathEdited(QString const& oldpath, QString const& new_name);
void openRequested(QString const& path);
private:
void clearSubtree(QModelIndex const&);
QModelIndex indexOf(FileTreeItem*, int column) const;
void emitParentsChanged(QModelIndex const&, int first_column, int last_column,
QSet<QModelIndex>* visited_parent_indices = nullptr);
void emitSubtreeChanged(QModelIndex const&, int first_column, int last_column);
FileTreeItem* findItemForFileIndex(int file_index) const;
FileTreeItem* itemFromIndex(QModelIndex const&) const;
QModelIndexList getOrphanIndices(QModelIndexList const& indices) const;
private:
QMap<int, FileTreeItem*> index_cache_;
FileTreeItem* root_item_ = {};
bool is_editable_ = {};
};