fix document naming and file dialogs preset, add touch scroll, flip thumbnail, scroll gesture and wheel for sidebar

engine/node_text_input.cpp

@@ -87,3 +87,11 @@ kEventResult NodeTextInput::handle_event(Event* e)
     }
     return kEventResult::Consumed;
 }
+
+void NodeTextInput::set_text(const std::string& s)
+{
+    if (m_text)
+        m_text->set_text(s.c_str());
+    m_string = s;
+}
+