qt-creator/src/plugins/genericprojectmanager/selectablefilesmodel.h

/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
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** GNU Lesser General Public License Usage
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** rights. These rights are described in the Nokia Qt LGPL Exception
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#ifndef SELECTABLEFILESMODEL_H
#define SELECTABLEFILESMODEL_H

#include <QtCore/QAbstractItemModel>
#include <QtCore/QSet>
#include <QtCore/QFutureInterface>
#include <QtCore/QFutureWatcher>
#include <QtGui/QFileSystemModel>
#include <QtGui/QDialog>
#include <QtGui/QTreeView>
#include <QtGui/QLabel>

namespace GenericProjectManager {
namespace Internal {


struct Tree
{
    QString name;
    Qt::CheckState checked;
    QList<Tree *> childDirectories;
    QList<Tree *> files;
    QIcon icon;
    QString fullPath;
    Tree *parent;
};

class SelectableFilesModel : public QAbstractItemModel
{
    Q_OBJECT
public:
    SelectableFilesModel(const QString &baseDir, QObject *parent);
    ~SelectableFilesModel();

    void setSuffixes(QSet<QString> suffixes);
    void setInitialMarkedFiles(const QStringList &files);

    int columnCount(const QModelIndex &parent) const;
    int rowCount(const QModelIndex &parent) const;
    QModelIndex index(int row, int column, const QModelIndex &parent) const;
    QModelIndex parent(const QModelIndex &child) const;

    bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
    Qt::ItemFlags flags(const QModelIndex &index) const;

    QStringList selectedFiles() const;
    QStringList selectedPaths() const;

    // only call this once
    void startParsing();
    void waitForFinished();
    void cancel();
signals:
    void parsingFinished();
    void parsingProgress(const QString &filename);
private slots:
    void buildTreeFinished();
private:
    void init();
    void run(QFutureInterface<void> &fi);
    void collectFiles(Tree *root, QStringList *result) const;
    void collectPaths(Tree *root, QStringList *result) const;
    void buildTree(const QString &baseDir, Tree *tree, QFutureInterface<void> &fi);
    void deleteTree(Tree *tree);
    void propagateUp(const QModelIndex &index);
    void propagateDown(const QModelIndex &index);
    Tree *m_root;
    // Used in the future thread need to all not used after calling startParsing
    QString m_baseDir;
    QSet<QString> m_files;
    QSet<QString> m_suffixes;
    QFutureWatcher<void> m_watcher;
    Tree *m_rootForFuture;
    int m_futureCount;
    bool m_allFiles;
};

class SelectableFilesDialog : public QDialog
{
    Q_OBJECT
public:
    SelectableFilesDialog(const QString &path, const QStringList files, const QSet<QString> &suffixes, QWidget *parent);
    ~SelectableFilesDialog();
    QStringList selectedFiles() const;

private slots:
    void parsingProgress(const QString &fileName);
    void parsingFinished();

private:
    void smartExpand(const QModelIndex &index);
    SelectableFilesModel *m_selectableFilesModel;
    QTreeView *m_view;
    QLabel *m_progressLabel;
};

}
}


#endif // SELECTABLEFILESMODEL_H