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diff --git a/src/plugins/projectexplorer/projectmodels.h b/src/plugins/projectexplorer/projectmodels.h
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+/***************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact:  Qt Software Information (qt-info@nokia.com)
+**
+** 
+** Non-Open Source Usage  
+** 
+** Licensees may use this file in accordance with the Qt Beta Version
+** License Agreement, Agreement version 2.2 provided with the Software or,
+** alternatively, in accordance with the terms contained in a written
+** agreement between you and Nokia.  
+** 
+** GNU General Public License Usage 
+** 
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the packaging
+** of this file.  Please review the following information to ensure GNU
+** General Public Licensing requirements will be met:
+**
+** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt GPL Exception version
+** 1.2, included in the file GPL_EXCEPTION.txt in this package.  
+** 
+***************************************************************************/
+#ifndef PROJECTMODELS_H
+#define PROJECTMODELS_H
+
+#include <QtCore/QAbstractItemModel>
+#include <QtCore/QSet>
+
+namespace ProjectExplorer {
+
+class Node;
+class FileNode;
+class FolderNode;
+class ProjectNode;
+class SessionNode;
+
+namespace Internal {
+
+// A 1:1 mapping of the internal data model
+class DetailedModel : public QAbstractItemModel {
+    Q_OBJECT
+public:
+    DetailedModel(SessionNode *rootNode, QObject *parent);
+
+    // QAbstractItemModel
+    QModelIndex index(int row, int column, const QModelIndex & parent = QModelIndex()) const;
+    QModelIndex parent(const QModelIndex &index) const;
+    Qt::ItemFlags flags(const QModelIndex & index) const;
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
+    bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
+
+    int rowCount(const QModelIndex & parent = QModelIndex()) const;
+    int columnCount(const QModelIndex & parent = QModelIndex()) const;
+    bool hasChildren(const QModelIndex & parent = QModelIndex()) const;
+
+    bool canFetchMore(const QModelIndex & parent) const;
+    void fetchMore(const QModelIndex & parent);
+
+    void reset();
+
+    void setStartupProject(ProjectNode * /* projectNode */) {}
+
+    Node *nodeForIndex(const QModelIndex &index) const;
+    QModelIndex indexForNode(const Node *node);
+
+    public slots:
+    void setProjectFilterEnabled(bool /* filter */) {}
+
+private slots:
+    void foldersAboutToBeAdded(FolderNode *parentFolder,
+                               const QList<FolderNode*> &newFolders);
+    void foldersAdded();
+
+    void foldersAboutToBeRemoved(FolderNode *parentFolder,
+                               const QList<FolderNode*> &staleFolders);
+
+    void filesAboutToBeAdded(FolderNode *folder,
+                               const QList<FileNode*> &newFiles);
+    void filesAdded();
+
+    void filesAboutToBeRemoved(FolderNode *folder,
+                               const QList<FileNode*> &staleFiles);
+
+private:
+    QList<Node*> childNodeList(FolderNode *folderNode) const;
+
+    void connectProject(ProjectNode *project);
+    void addToChildNodes(FolderNode *parentFolder, QList<Node*> newList);
+    void removeFromChildNodes(FolderNode *parentFolder, QList<Node*> newList);
+    QList<FolderNode*> recursiveSubFolders(FolderNode *parentFolder);
+
+    SessionNode *m_rootNode;
+    mutable QHash<FolderNode*, QList<Node*> > m_childNodes;
+    bool m_isStartupProject;
+
+    FolderNode *m_folderToAddTo;
+
+    friend class DetailedModelManager;
+};
+
+
+// displays "flattened" view without pri files, subdirs pro files & virtual folders
+// This view is optimized to be used in the edit mode sidebar
+class FlatModel : public QAbstractItemModel {
+    Q_OBJECT
+public:
+    FlatModel(SessionNode *rootNode, QObject *parent);
+
+    // QAbstractItemModel
+    QModelIndex index(int row, int column, const QModelIndex & parent = QModelIndex()) const;
+    QModelIndex parent(const QModelIndex &index) const;
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
+
+    int rowCount(const QModelIndex & parent = QModelIndex()) const;
+    int columnCount(const QModelIndex & parent = QModelIndex()) const;
+    bool hasChildren(const QModelIndex & parent = QModelIndex()) const;
+
+    bool canFetchMore(const QModelIndex & parent) const;
+    void fetchMore(const QModelIndex & parent);
+
+    void reset();
+
+    void setStartupProject(ProjectNode *projectNode);
+
+    ProjectExplorer::Node *nodeForIndex(const QModelIndex &index) const;
+    QModelIndex indexForNode(const Node *node);
+
+public slots:
+    void setProjectFilterEnabled(bool filter);
+    void setGeneratedFilesFilterEnabled(bool filter);
+
+private slots:
+    void foldersAboutToBeAdded(FolderNode *parentFolder, const QList<FolderNode*> &newFolders);
+    void foldersAdded();
+
+    void foldersAboutToBeRemoved(FolderNode *parentFolder, const QList<FolderNode*> &staleFolders);
+    void foldersRemoved();
+
+    // files
+    void filesAboutToBeAdded(FolderNode *folder, const QList<FileNode*> &newFiles);
+    void filesAdded();
+
+    void filesAboutToBeRemoved(FolderNode *folder, const QList<FileNode*> &staleFiles);
+    void filesRemoved();
+
+private:
+    void added(FolderNode* folderNode, const QList<Node*> &newNodeList);
+    void removed(FolderNode* parentNode, const QList<Node*> &newNodeList);
+    void removeFromCache(QList<FolderNode *> list);
+    void fetchMore(FolderNode *foldernode) const;
+
+    void recursiveAddFolderNodes(FolderNode *startNode, QList<Node *> *list, const QSet<Node *> &blackList = QSet<Node*>()) const;
+    void recursiveAddFolderNodesImpl(FolderNode *startNode, QList<Node *> *list, const QSet<Node *> &blackList = QSet<Node*>()) const;
+    void recursiveAddFileNodes(FolderNode *startNode, QList<Node *> *list, const QSet<Node *> &blackList = QSet<Node*>()) const;
+    QList<Node*> childNodes(FolderNode *parentNode, const QSet<Node*> &blackList = QSet<Node*>()) const;
+
+    FolderNode *visibleFolderNode(FolderNode *node) const;
+    bool filter(Node *node) const;
+
+    bool m_filterProjects;
+    bool m_filterGeneratedFiles;
+
+    SessionNode *m_rootNode;
+    mutable QHash<FolderNode*, QList<Node*> > m_childNodes;
+    ProjectNode *m_startupProject;
+
+    FolderNode *m_parentFolderForChange;
+
+    friend class FlatModelManager;
+};
+
+} // namespace Internal
+} // namespace ProjectExplorer
+
+
+#endif // PROJECTMODELS_H