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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:
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FileTreeModel (QObject * parent = nullptr, bool isEditable = true);
virtual ~FileTreeModel ();
void setEditable (bool editable);
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void clear ();
void addFile (int index, const QString& filename,
bool wanted, int priority,
uint64_t size, uint64_t have,
bool torrentChanged);
bool openFile (const QModelIndex& index);
void twiddleWanted (const QModelIndexList& indices);
void twiddlePriority (const QModelIndexList& indices);
void setWanted (const QModelIndexList& indices, bool wanted);
void setPriority (const QModelIndexList& indices, int priority);
QModelIndex parent (const QModelIndex& child, int column) const;
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// QAbstractItemModel
virtual QVariant data (const QModelIndex& index, int role = Qt::DisplayRole) const;
virtual Qt::ItemFlags flags (const QModelIndex& index) const;
virtual QVariant headerData (int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;
virtual QModelIndex index (int row, int column, const QModelIndex& parent = QModelIndex ()) const;
virtual QModelIndex parent (const QModelIndex& child) const;
virtual int rowCount (const QModelIndex& parent = QModelIndex ()) const;
virtual int columnCount (const QModelIndex& parent = QModelIndex ()) const;
virtual bool setData (const QModelIndex& index, const QVariant& value, int role = Qt::EditRole);
signals:
void priorityChanged (const QSet<int>& fileIndices, int);
void wantedChanged (const QSet<int>& fileIndices, bool);
void pathEdited (const QString& oldpath, const QString& newname);
void openRequested (const QString& path);
private:
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void clearSubtree (const QModelIndex&);
QModelIndex indexOf (FileTreeItem *, int column) const;
void emitParentsChanged (const QModelIndex&, int firstColumn, int lastColumn, QSet<QModelIndex> * visitedParentIndices = nullptr);
void emitSubtreeChanged (const QModelIndex&, int firstColumn, int lastColumn);
FileTreeItem * findItemForFileIndex (int fileIndex) const;
FileTreeItem * itemFromIndex (const QModelIndex&) const;
QModelIndexList getOrphanIndices (const QModelIndexList& indices) const;
private:
bool myIsEditable;
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FileTreeItem * myRootItem;
QMap<int, FileTreeItem *> myIndexCache;
};