--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libgui/src/documentation-bookmarks.h	Sun Jan 10 14:04:35 2021 +0100
@@ -0,0 +1,124 @@
+////////////////////////////////////////////////////////////////////////
+//
+// Copyright (C) 2018-2020 The Octave Project Developers
+//
+// See the file COPYRIGHT.md in the top-level directory of this
+// distribution or <https://octave.org/copyright/>.
+//
+// This file is part of Octave.
+//
+// Octave is free software: you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Octave is distributed in the hope that it will be useful, but
+// WiTHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Octave; see the file COPYING.  If not, see
+// <https://www.gnu.org/licenses/>.
+//
+////////////////////////////////////////////////////////////////////////
+
+#if ! defined (octave_documentation_bookmarks_h)
+#define octave_documentation_bookmarks_h 1
+
+#include <QCheckBox>
+#include <QComboBox>
+#include <QTreeWidget>
+#include <QXmlStreamWriter>
+
+#include "documentation.h"
+#include "octave-qobject.h"
+
+
+namespace octave
+{
+  class base_qobject;
+  class documentation;
+
+  class documentation_bookmarks : public QWidget
+  {
+    Q_OBJECT
+
+  public:
+
+    documentation_bookmarks (
+                documentation *doc, documentation_browser *browser,
+                base_qobject& oct_qobj, QWidget *p = nullptr);
+    ~documentation_bookmarks (void);
+
+  public slots:
+
+    void add_bookmark (void);
+    void add_folder (bool);
+    void save_settings (void);
+
+  private slots:
+
+    void filter_bookmarks (const QString& pattern);
+    void filter_activate (bool state);
+    void update_filter_history (void);
+    void handle_double_click (QTreeWidgetItem *item, int col = 0);
+    void ctx_menu (const QPoint& xpos);
+    void open (bool);
+    void edit (bool);
+    void remove (bool);
+    void show_filter (bool);
+
+  private:
+
+    enum item_role
+    {
+      url_role = Qt::UserRole,
+      tag_role = Qt::UserRole + 1
+    };
+    enum item_tag
+    {
+      bookmark_tag,
+      folder_tag
+    };
+
+    void add_bookmark (const QString& title, const QString& url,
+                       QTreeWidgetItem *item = nullptr);
+    QTreeWidgetItem* add_folder (const QString& folder,
+                                 QTreeWidgetItem *item = nullptr,
+                                 bool expanded = true);
+
+    /*!
+        Writing to and reading bookmarks from an xbel-file as
+        proposed in the qt example
+        [QXmlStream Bookmarks Example](https://doc.qt.io/qt-5/qtxml-streambookmarks-example.html)
+    */
+    void write_bookmarks (void);
+    void write_tree_item (QXmlStreamWriter *xml_writer,
+                          const QTreeWidgetItem *item);
+    QString read_bookmarks (void);
+    void read_next_item (QXmlStreamReader *xml_writer, item_tag tag,
+                         QTreeWidgetItem *item = nullptr);
+
+    documentation *m_doc;
+    documentation_browser *m_browser;
+    base_qobject& m_octave_qobj;
+
+    QComboBox *m_filter;
+    QTreeWidget *m_tree;
+
+    QTreeWidgetItem *m_ctx_menu_item;
+
+    QIcon icon_folder;
+    QIcon icon_bookmark;
+
+    QWidget *m_filter_widget;
+    QCheckBox *m_filter_checkbox;
+    bool m_filter_shown;
+
+    QFile m_xbel_file;
+  };
+
+}
+
+#endif