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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 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 the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef BOOKMARKS_H
+#define BOOKMARKS_H
+
+#include <QtCore/QObject>
+#include <QtCore/QAbstractItemModel>
+
+#include <QtGui/QUndoCommand>
+
+/*!
+    Bookmark manager, owner of the bookmarks, loads, saves and basic tasks
+  */
+class AutoSaver;
+class BookmarkNode;
+class BookmarksModel;
+class BookmarksManager : public QObject
+{
+    Q_OBJECT
+
+signals:
+    void entryAdded(BookmarkNode *item);
+    void entryRemoved(BookmarkNode *parent, int row, BookmarkNode *item);
+    void entryChanged(BookmarkNode *item);
+
+public:
+    BookmarksManager(QObject *parent = 0);
+    ~BookmarksManager();
+
+    void addBookmark(BookmarkNode *parent, BookmarkNode *node, int row = -1);
+    void removeBookmark(BookmarkNode *node);
+    void setTitle(BookmarkNode *node, const QString &newTitle);
+    void setUrl(BookmarkNode *node, const QString &newUrl);
+    void changeExpanded();
+
+    BookmarkNode *bookmarks();
+    BookmarkNode *menu();
+    BookmarkNode *toolbar();
+
+    BookmarksModel *bookmarksModel();
+    QUndoStack *undoRedoStack() { return &m_commands; };
+
+public slots:
+    void importBookmarks();
+    void exportBookmarks();
+
+private slots:
+    void save() const;
+
+private:
+    void load();
+
+    bool m_loaded;
+    AutoSaver *m_saveTimer;
+    BookmarkNode *m_bookmarkRootNode;
+    BookmarksModel *m_bookmarkModel;
+    QUndoStack m_commands;
+
+    friend class RemoveBookmarksCommand;
+    friend class ChangeBookmarkCommand;
+};
+
+class RemoveBookmarksCommand : public QUndoCommand
+{
+
+public:
+    RemoveBookmarksCommand(BookmarksManager *m_bookmarkManagaer, BookmarkNode *parent, int row);
+    ~RemoveBookmarksCommand();
+    void undo();
+    void redo();
+
+protected:
+    int m_row;
+    BookmarksManager *m_bookmarkManagaer;
+    BookmarkNode *m_node;
+    BookmarkNode *m_parent;
+    bool m_done;
+};
+
+class InsertBookmarksCommand : public RemoveBookmarksCommand
+{
+
+public:
+    InsertBookmarksCommand(BookmarksManager *m_bookmarkManagaer,
+        BookmarkNode *parent, BookmarkNode *node, int row);
+    void undo() { RemoveBookmarksCommand::redo(); }
+    void redo() { RemoveBookmarksCommand::undo(); }
+
+};
+
+class ChangeBookmarkCommand : public QUndoCommand
+{
+
+public:
+    ChangeBookmarkCommand(BookmarksManager *m_bookmarkManagaer,
+        BookmarkNode *node, const QString &newValue, bool title);
+    void undo();
+    void redo();
+
+private:
+    BookmarksManager *m_bookmarkManagaer;
+    bool m_title;
+    QString m_oldValue;
+    QString m_newValue;
+    BookmarkNode *m_node;
+};
+
+/*!
+    BookmarksModel is a QAbstractItemModel wrapper around the BookmarkManager
+  */
+#include <QtGui/QIcon>
+class BookmarksModel : public QAbstractItemModel
+{
+    Q_OBJECT
+
+public slots:
+    void entryAdded(BookmarkNode *item);
+    void entryRemoved(BookmarkNode *parent, int row, BookmarkNode *item);
+    void entryChanged(BookmarkNode *item);
+
+public:
+    enum Roles {
+        TypeRole = Qt::UserRole + 1,
+        UrlRole = Qt::UserRole + 2,
+        UrlStringRole = Qt::UserRole + 3,
+        SeparatorRole = Qt::UserRole + 4
+    };
+
+    BookmarksModel(BookmarksManager *bookmarkManager, QObject *parent = 0);
+    inline BookmarksManager *bookmarksManager() const { return m_bookmarksManager; }
+
+    QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
+    int columnCount(const QModelIndex &parent = QModelIndex()) const;
+    int rowCount(const QModelIndex &parent = QModelIndex()) const;
+    QModelIndex index(int, int, const QModelIndex& = QModelIndex()) const;
+    QModelIndex parent(const QModelIndex& index= QModelIndex()) const;
+    Qt::ItemFlags flags(const QModelIndex &index) const;
+    Qt::DropActions supportedDropActions () const;
+    bool removeRows(int row, int count, const QModelIndex &parent = QModelIndex());
+    bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
+    QMimeData *mimeData(const QModelIndexList &indexes) const;
+    QStringList mimeTypes() const;
+    bool dropMimeData(const QMimeData *data,
+        Qt::DropAction action, int row, int column, const QModelIndex &parent);
+    bool hasChildren(const QModelIndex &parent = QModelIndex()) const;
+
+    BookmarkNode *node(const QModelIndex &index) const;
+    QModelIndex index(BookmarkNode *node) const;
+
+private:
+
+    bool m_endMacro;
+    BookmarksManager *m_bookmarksManager;
+};
+
+// Menu that is dynamically populated from the bookmarks
+#include "modelmenu.h"
+class BookmarksMenu : public ModelMenu
+{
+    Q_OBJECT
+
+signals:
+    void openUrl(const QUrl &url);
+
+public:
+     BookmarksMenu(QWidget *parent = 0);
+     void setInitialActions(QList<QAction*> actions);
+
+protected:
+    bool prePopulated();
+
+private slots:
+    void activated(const QModelIndex &index);
+
+private:
+    BookmarksManager *m_bookmarksManager;
+    QList<QAction*> m_initialActions;
+};
+
+/*
+    Proxy model that filters out the bookmarks so only the folders
+    are left behind.  Used in the add bookmark dialog combobox.
+ */
+#include <QtGui/QSortFilterProxyModel>
+class AddBookmarkProxyModel : public QSortFilterProxyModel
+{
+    Q_OBJECT
+public:
+    AddBookmarkProxyModel(QObject * parent = 0);
+    int columnCount(const QModelIndex & parent = QModelIndex()) const;
+
+protected:
+    bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const;
+};
+
+/*!
+    Add bookmark dialog
+ */
+#include "ui_addbookmarkdialog.h"
+class AddBookmarkDialog : public QDialog, public Ui_AddBookmarkDialog
+{
+    Q_OBJECT
+
+public:
+    AddBookmarkDialog(const QString &url, const QString &title, QWidget *parent = 0, BookmarksManager *bookmarkManager = 0);
+
+private slots:
+    void accept();
+
+private:
+    QString m_url;
+    BookmarksManager *m_bookmarksManager;
+    AddBookmarkProxyModel *m_proxyModel;
+};
+
+#include "ui_bookmarks.h"
+class TreeProxyModel;
+class BookmarksDialog : public QDialog, public Ui_BookmarksDialog
+{
+    Q_OBJECT
+
+signals:
+    void openUrl(const QUrl &url);
+
+public:
+    BookmarksDialog(QWidget *parent = 0, BookmarksManager *manager = 0);
+    ~BookmarksDialog();
+
+private slots:
+    void customContextMenuRequested(const QPoint &pos);
+    void open();
+    void newFolder();
+
+private:
+    void expandNodes(BookmarkNode *node);
+    bool saveExpandedNodes(const QModelIndex &parent);
+
+    BookmarksManager *m_bookmarksManager;
+    BookmarksModel *m_bookmarksModel;
+    TreeProxyModel *m_proxyModel;
+};
+
+#include <QtGui/QToolBar>
+class BookmarksToolBar : public QToolBar
+{
+    Q_OBJECT
+
+signals:
+    void openUrl(const QUrl &url);
+
+public:
+    BookmarksToolBar(BookmarksModel *model, QWidget *parent = 0);
+    void setRootIndex(const QModelIndex &index);
+    QModelIndex rootIndex() const;
+
+protected:
+    void dragEnterEvent(QDragEnterEvent *event);
+    void dropEvent(QDropEvent *event);
+
+private slots:
+    void triggered(QAction *action);
+    void activated(const QModelIndex &index);
+    void build();
+
+private:
+    BookmarksModel *m_bookmarksModel;
+    QPersistentModelIndex m_root;
+};
+
+#endif // BOOKMARKS_H