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diff --git a/src/ui/widget/font-selector-toolbar.h b/src/ui/widget/font-selector-toolbar.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Author:
+ *   Tavmjong Bah <tavmjong@free.fr>
+ *
+ * Copyright (C) 2018 Tavmong Bah
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ *
+ *
+ * The routines here create and manage a font selector widget with two parts,
+ * one each for font-family and font-style.
+ *
+ * This is essentially a toolbar version of the 'FontSelector' widget. Someday
+ * this may be merged with it.
+ *
+ * The main functions are:
+ *   Create the font-selector toolbar widget.
+ *   Update the lists when a new text selection is made.
+ *   Update the Style list when a new font-family is selected, highlighting the
+ *     best match to the original font style (as not all fonts have the same style options).
+ *   Update the on-screen text.
+ *   Provide the currently selected values.
+ */
+
+#ifndef INKSCAPE_UI_WIDGET_FONT_SELECTOR_TOOLBAR_H
+#define INKSCAPE_UI_WIDGET_FONT_SELECTOR_TOOLBAR_H
+
+#include <gtkmm/grid.h>
+#include <gtkmm/treeview.h>
+#include <gtkmm/comboboxtext.h>
+
+namespace Inkscape {
+namespace UI {
+namespace Widget {
+
+/**
+ * A container of widgets for selecting font faces.
+ *
+ * It is used by Text tool toolbar. The FontSelectorToolbar class utilizes the
+ * FontLister class to obtain a list of font-families and their associated styles for fonts either
+ * on the system or in the document. The FontLister class is also used by the Text toolbar. Fonts
+ * are kept track of by their "fontspecs" which are the same as the strings that Pango generates.
+ *
+ * The main functions are:
+ *   Create the font-selector widget.
+ *   Update the child widgets when a new text selection is made.
+ *   Update the Style list when a new font-family is selected, highlighting the
+ *     best match to the original font style (as not all fonts have the same style options).
+ *   Emit a signal when any change is made to a child widget.
+ */
+class FontSelectorToolbar : public Gtk::Grid
+{
+
+public:
+
+    /**
+     * Constructor
+     */
+    FontSelectorToolbar ();
+
+protected:
+
+    // Font family
+    Gtk::ComboBox         family_combo;
+    Gtk::CellRendererText family_cell;
+
+    // Font style
+    Gtk::ComboBoxText     style_combo;
+    Gtk::CellRendererText style_cell;
+
+private:
+
+    // Make a list of missing fonts for tooltip and for warning icon.
+    Glib::ustring get_missing_fonts ();
+
+    // Signal handlers
+    void on_family_changed();
+    void on_style_changed();
+    void on_icon_pressed (Gtk::EntryIconPosition icon_position, const GdkEventButton* event);
+    // bool on_match_selected (const Gtk::TreeModel::iterator& iter);
+    bool on_key_press_event (GdkEventKey* key_event) override;
+
+    // Signals
+    sigc::signal<void> changed_signal;
+    void changed_emit();
+    bool signal_block;
+
+public:
+
+    /**
+     * Update GUI based on font-selector values.
+     */
+    void update_font ();
+
+    /**
+     * Let others know that user has changed GUI settings.
+     */
+    sigc::connection connectChanged(sigc::slot<void> slot) {
+        return changed_signal.connect(slot);
+    }
+};
+
+ 
+} // namespace Widget
+} // namespace UI
+} // namespace Inkscape
+
+#endif // INKSCAPE_UI_WIDGET_FONT_SETTINGS_TOOLBAR_H
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8 :