transmission/qt/FileTreeModel.h

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/*
* 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>
#include <QAbstractItemModel>
#include <QList>
#include <QMap>
#include <QSet>
class FileTreeItem;
class FileTreeModel : 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 isEditable = true);
virtual ~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 torrentChanged);
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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;
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// QAbstractItemModel
virtual QVariant data(QModelIndex const& index, int role = Qt::DisplayRole) const;
virtual Qt::ItemFlags flags(QModelIndex const& index) const;
virtual QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;
virtual QModelIndex index(int row, int column, QModelIndex const& parent = QModelIndex()) const;
virtual QModelIndex parent(QModelIndex const& child) const;
virtual int rowCount(QModelIndex const& parent = QModelIndex()) const;
virtual int columnCount(QModelIndex const& parent = QModelIndex()) const;
virtual bool setData(QModelIndex const& index, QVariant const& value, int role = Qt::EditRole);
signals:
void priorityChanged(QSet<int> const& fileIndices, int);
void wantedChanged(QSet<int> const& fileIndices, bool);
void pathEdited(QString const& oldpath, QString const& newname);
void openRequested(QString const& path);
private:
void clearSubtree(QModelIndex const&);
QModelIndex indexOf(FileTreeItem*, int column) const;
void emitParentsChanged(QModelIndex const&, int firstColumn, int lastColumn,
QSet<QModelIndex>* visitedParentIndices = nullptr);
void emitSubtreeChanged(QModelIndex const&, int firstColumn, int lastColumn);
FileTreeItem* findItemForFileIndex(int fileIndex) const;
FileTreeItem* itemFromIndex(QModelIndex const&) const;
QModelIndexList getOrphanIndices(QModelIndexList const& indices) const;
private:
bool myIsEditable;
FileTreeItem* myRootItem;
QMap<int, FileTreeItem*> myIndexCache;
};