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/**************************************************************************
**
** This file is part of Qt Creator
**
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** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: Nokia Corporation (info@qt.nokia.com)
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**
**
** GNU Lesser General Public License Usage
**
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** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
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** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
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** If you have questions regarding the use of this file, please contact
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** Nokia at info@qt.nokia.com.
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**
**************************************************************************/

#ifndef OPENEDITORSMODEL_H
#define OPENEDITORSMODEL_H

#include "../core_global.h"
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#include "../id.h"
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#include <QtCore/QAbstractItemModel>
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#include <QtCore/QScopedPointer>

QT_FORWARD_DECLARE_CLASS(QIcon)
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namespace Core {

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struct OpenEditorsModelPrivate;
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class IEditor;
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class IFile;
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class CORE_EXPORT OpenEditorsModel : public QAbstractItemModel
{
    Q_OBJECT
public:
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    explicit OpenEditorsModel(QObject *parent);
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    virtual ~OpenEditorsModel();
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    QIcon lockedIcon() const;
    QIcon unlockedIcon() const;

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    int columnCount(const QModelIndex &parent = QModelIndex()) const;
    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
    QModelIndex parent(const QModelIndex &/*index*/) const { return QModelIndex(); }
    int rowCount(const QModelIndex &parent = QModelIndex()) const;
    QModelIndex index(int row, int column = 0, const QModelIndex &parent = QModelIndex()) const;

    void addEditor(IEditor *editor, bool isDuplicate = false);
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    void addRestoredEditor(const QString &fileName, const QString &displayName, const QString &id);
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    QModelIndex firstRestoredEditor() const;

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    struct CORE_EXPORT Entry {
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        Entry();
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        IEditor *editor;
        QString fileName() const;
        QString displayName() const;
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        Id id() const;
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        QString m_fileName;
        QString m_displayName;
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        Id m_id;
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    };
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    QList<Entry> entries() const;
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    IEditor *editorAt(int row) const;
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    void removeEditor(IEditor *editor);
    void removeEditor(const QModelIndex &index);
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    void removeEditor(const QString &fileName);
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    void removeAllRestoredEditors();
    void emitDataChanged(IEditor *editor);

    QList<IEditor *> editors() const;
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    QList<Entry> restoredEditors() const;
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    bool isDuplicate(IEditor *editor) const;
    QList<IEditor *> duplicatesFor(IEditor *editor) const;
    IEditor *originalForDuplicate(IEditor *duplicate) const;
    void makeOriginal(IEditor *duplicate);
    QModelIndex indexOf(IEditor *editor) const;

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    QString displayNameForFile(IFile *file) const;

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private slots:
    void itemChanged();

private:
    void addEntry(const Entry &entry);
    int findEditor(IEditor *editor) const;
    int findFileName(const QString &filename) const;
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    void removeEditor(int idx);
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    QScopedPointer<OpenEditorsModelPrivate> d;
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};

} // namespace Core

#endif // OPENEDITORSMODEL_H