/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the demonstration applications of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** 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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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#ifndef BOOKMARKS_H+
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#define BOOKMARKS_H+
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+
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#include <QtCore/QObject>+
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#include <QtCore/QAbstractItemModel>+
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+
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#include <QtGui/QUndoCommand>+
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+
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/*!+
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    Bookmark manager, owner of the bookmarks, loads, saves and basic tasks+
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  */+
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class AutoSaver;+
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class BookmarkNode;+
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class BookmarksModel;+
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class BookmarksManager : public QObject+
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{+
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    Q_OBJECT+
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+
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signals:+
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    void entryAdded(BookmarkNode *item);+
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    void entryRemoved(BookmarkNode *parent, int row, BookmarkNode *item);+
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    void entryChanged(BookmarkNode *item);+
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+
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public:+
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    BookmarksManager(QObject *parent = 0);+
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    ~BookmarksManager();+
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+
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    void addBookmark(BookmarkNode *parent, BookmarkNode *node, int row = -1);+
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    void removeBookmark(BookmarkNode *node);+
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    void setTitle(BookmarkNode *node, const QString &newTitle);+
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    void setUrl(BookmarkNode *node, const QString &newUrl);+
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    void changeExpanded();+
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+
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    BookmarkNode *bookmarks();+
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    BookmarkNode *menu();+
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    BookmarkNode *toolbar();+
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+
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    BookmarksModel *bookmarksModel();+
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    QUndoStack *undoRedoStack() { return &m_commands; };+
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+
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public slots:+
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    void importBookmarks();+
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    void exportBookmarks();+
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+
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private slots:+
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    void save() const;+
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+
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private:+
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    void load();+
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+
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    bool m_loaded;+
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    AutoSaver *m_saveTimer;+
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    BookmarkNode *m_bookmarkRootNode;+
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    BookmarksModel *m_bookmarkModel;+
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    QUndoStack m_commands;+
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+
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    friend class RemoveBookmarksCommand;+
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    friend class ChangeBookmarkCommand;+
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};+
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+
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class RemoveBookmarksCommand : public QUndoCommand+
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{+
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+
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public:+
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    RemoveBookmarksCommand(BookmarksManager *m_bookmarkManagaer, BookmarkNode *parent, int row);+
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    ~RemoveBookmarksCommand();+
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    void undo();+
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    void redo();+
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+
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protected:+
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    int m_row;+
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    BookmarksManager *m_bookmarkManagaer;+
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    BookmarkNode *m_node;+
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    BookmarkNode *m_parent;+
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    bool m_done;+
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};+
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+
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class InsertBookmarksCommand : public RemoveBookmarksCommand+
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{+
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+
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public:+
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    InsertBookmarksCommand(BookmarksManager *m_bookmarkManagaer,+
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        BookmarkNode *parent, BookmarkNode *node, int row);+
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    void undo() { RemoveBookmarksCommand::redo(); }+
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    void redo() { RemoveBookmarksCommand::undo(); }+
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+
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};+
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+
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class ChangeBookmarkCommand : public QUndoCommand+
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{+
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+
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public:+
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    ChangeBookmarkCommand(BookmarksManager *m_bookmarkManagaer,+
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        BookmarkNode *node, const QString &newValue, bool title);+
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    void undo();+
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    void redo();+
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+
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private:+
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    BookmarksManager *m_bookmarkManagaer;+
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    bool m_title;+
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    QString m_oldValue;+
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    QString m_newValue;+
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    BookmarkNode *m_node;+
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};+
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+
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/*!+
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    BookmarksModel is a QAbstractItemModel wrapper around the BookmarkManager+
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  */+
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#include <QtGui/QIcon>+
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class BookmarksModel : public QAbstractItemModel+
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{+
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    Q_OBJECT+
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+
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public slots:+
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    void entryAdded(BookmarkNode *item);+
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    void entryRemoved(BookmarkNode *parent, int row, BookmarkNode *item);+
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    void entryChanged(BookmarkNode *item);+
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+
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public:+
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    enum Roles {+
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        TypeRole = Qt::UserRole + 1,+
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        UrlRole = Qt::UserRole + 2,+
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        UrlStringRole = Qt::UserRole + 3,+
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        SeparatorRole = Qt::UserRole + 4+
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    };+
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+
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    BookmarksModel(BookmarksManager *bookmarkManager, QObject *parent = 0);+
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    inline BookmarksManager *bookmarksManager() const { return m_bookmarksManager; }+
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+
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    QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;+
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    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;+
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    int columnCount(const QModelIndex &parent = QModelIndex()) const;+
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    int rowCount(const QModelIndex &parent = QModelIndex()) const;+
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    QModelIndex index(int, int, const QModelIndex& = QModelIndex()) const;+
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    QModelIndex parent(const QModelIndex& index= QModelIndex()) const;+
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    Qt::ItemFlags flags(const QModelIndex &index) const;+
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    Qt::DropActions supportedDropActions () const;+
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    bool removeRows(int row, int count, const QModelIndex &parent = QModelIndex());+
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    bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);+
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    QMimeData *mimeData(const QModelIndexList &indexes) const;+
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    QStringList mimeTypes() const;+
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    bool dropMimeData(const QMimeData *data,+
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        Qt::DropAction action, int row, int column, const QModelIndex &parent);+
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    bool hasChildren(const QModelIndex &parent = QModelIndex()) const;+
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+
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    BookmarkNode *node(const QModelIndex &index) const;+
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    QModelIndex index(BookmarkNode *node) const;+
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+
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private:+
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+
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    bool m_endMacro;+
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    BookmarksManager *m_bookmarksManager;+
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};+
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+
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// Menu that is dynamically populated from the bookmarks+
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#include "modelmenu.h"+
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class BookmarksMenu : public ModelMenu+
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{+
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    Q_OBJECT+
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+
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signals:+
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    void openUrl(const QUrl &url);+
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+
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public:+
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     BookmarksMenu(QWidget *parent = 0);+
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     void setInitialActions(QList<QAction*> actions);+
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+
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protected:+
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    bool prePopulated();+
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+
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private slots:+
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    void activated(const QModelIndex &index);+
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+
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private:+
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    BookmarksManager *m_bookmarksManager;+
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    QList<QAction*> m_initialActions;+
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};+
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+
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/*+
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    Proxy model that filters out the bookmarks so only the folders+
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    are left behind.  Used in the add bookmark dialog combobox.+
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 */+
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#include <QtGui/QSortFilterProxyModel>+
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class AddBookmarkProxyModel : public QSortFilterProxyModel+
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{+
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    Q_OBJECT+
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public:+
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    AddBookmarkProxyModel(QObject * parent = 0);+
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    int columnCount(const QModelIndex & parent = QModelIndex()) const;+
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+
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protected:+
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    bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const;+
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};+
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+
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/*!+
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    Add bookmark dialog+
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 */+
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#include "ui_addbookmarkdialog.h"+
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class AddBookmarkDialog : public QDialog, public Ui_AddBookmarkDialog+
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{+
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    Q_OBJECT+
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+
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public:+
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    AddBookmarkDialog(const QString &url, const QString &title, QWidget *parent = 0, BookmarksManager *bookmarkManager = 0);+
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+
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private slots:+
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    void accept();+
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+
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private:+
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    QString m_url;+
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    BookmarksManager *m_bookmarksManager;+
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    AddBookmarkProxyModel *m_proxyModel;+
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};+
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+
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#include "ui_bookmarks.h"+
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class TreeProxyModel;+
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class BookmarksDialog : public QDialog, public Ui_BookmarksDialog+
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{+
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    Q_OBJECT+
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+
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signals:+
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    void openUrl(const QUrl &url);+
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+
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public:+
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    BookmarksDialog(QWidget *parent = 0, BookmarksManager *manager = 0);+
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    ~BookmarksDialog();+
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+
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private slots:+
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    void customContextMenuRequested(const QPoint &pos);+
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    void open();+
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    void newFolder();+
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+
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private:+
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    void expandNodes(BookmarkNode *node);+
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    bool saveExpandedNodes(const QModelIndex &parent);+
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+
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    BookmarksManager *m_bookmarksManager;+
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    BookmarksModel *m_bookmarksModel;+
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    TreeProxyModel *m_proxyModel;+
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};+
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+
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#include <QtGui/QToolBar>+
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class BookmarksToolBar : public QToolBar+
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{+
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    Q_OBJECT+
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+
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signals:+
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    void openUrl(const QUrl &url);+
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+
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public:+
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    BookmarksToolBar(BookmarksModel *model, QWidget *parent = 0);+
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    void setRootIndex(const QModelIndex &index);+
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    QModelIndex rootIndex() const;+
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+
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protected:+
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    void dragEnterEvent(QDragEnterEvent *event);+
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    void dropEvent(QDropEvent *event);+
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+
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private slots:+
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    void triggered(QAction *action);+
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    void activated(const QModelIndex &index);+
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    void build();+
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+
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private:+
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    BookmarksModel *m_bookmarksModel;+
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    QPersistentModelIndex m_root;+
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};+
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+
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#endif // BOOKMARKS_H+
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