add viewport

src/app/browser/main/tab/page/content/text/plain.cpp

@@ -4,20 +4,36 @@ using namespace app::browser::main::tab::page::content::text;
 
 Plain::Plain(
     const Glib::ustring & TEXT
+) : Gtk::Viewport( // add scrolled window features support
+    NULL,
+    NULL
 ) {
-    set_valign(
+    set_scroll_to_focus(
+        false
+    );
+
+    auto label = Gtk::make_managed<Gtk::Label>( // @TODO separated file?
+        TEXT
+    );
+
+        // Init widget
+        label->set_valign(
             Gtk::Align::START
         );
 
-    set_wrap(
+        label->set_wrap(
             true
         );
 
-    set_selectable(
+        label->set_selectable(
             true
         );
 
-    set_text(
-        TEXT
+        label->set_use_markup(
+            false
+        );
+
+    set_child(
+        * label
     );
 }

src/app/browser/main/tab/page/content/text/plain.hpp

@@ -4,10 +4,11 @@
 #include <glibmm/ustring.h>
 #include <gtkmm/enums.h>
 #include <gtkmm/label.h>
+#include <gtkmm/viewport.h>
 
 namespace app::browser::main::tab::page::content::text
 {
-    class Plain : public Gtk::Label
+    class Plain : public Gtk::Viewport
     {
         public: