InfoBox: extract into dedicated widget

src/gui/panel/infobox-panel.cpp

@@ -40,8 +40,7 @@ namespace panel{
     , twoParts_{Gtk::ORIENTATION_VERTICAL}
     , buttons_{}
     , frame_{"UI Integration Experiments"}
-    , scroller_{}
-    , textLog_{}
+    , errorLog_{}
     {
       twoParts_.pack_start(frame_);
       twoParts_.pack_start(buttons_, Gtk::PACK_SHRINK);
@@ -57,17 +56,8 @@ namespace panel{
       buttons_.add (button_1_);
       //(End)buttons...
       
-      frame_.add (scroller_);
       frame_.set_border_width (5);
-      
-      scroller_.set_shadow_type (Gtk::SHADOW_NONE);
-      scroller_.set_border_width (10);
-      
-      // the vertical scrollbar will always be necessary....
-      scroller_.set_policy (Gtk::POLICY_AUTOMATIC, Gtk::POLICY_ALWAYS);
-      scroller_.add (textLog_);
-      
-      textLog_.set_editable (false);
+      frame_.add (errorLog_);
       
       // show everything....
       this->add (twoParts_);
@@ -96,15 +86,7 @@ namespace panel{
     static uint bangNo{0};
     static _Fmt msgTemplate{"Bang #%d\n"};
     
-    // According to the Gtkmm tutorial, TextView::scroll_to(iter) is not reliable;
-    // rather we need to use a text mark and set that text mark to the insert position.
-    // Actually, there is always one predefined text mark called "insert", which corresponds
-    // to the text cursor. Thus it suffices to navigate to text end, insert and scroll into view.
-    auto buff = textLog_.get_buffer();
-    auto cursor = buff->get_insert();
-    buff->move_mark (cursor, buff->end());
-    buff->insert (buff->end(), ustring{msgTemplate % ++bangNo});
-    textLog_.scroll_to (cursor);
+    errorLog_.showMsg(NOTE_WARN, msgTemplate % ++bangNo);
   }
   
   

src/gui/panel/infobox-panel.hpp

@@ -36,6 +36,7 @@
 
 
 #include "gui/panel/panel.hpp"
+#include "gui/widget/error-log-widget.hpp"
 
 namespace gui  {
 namespace panel{
@@ -61,9 +62,7 @@ namespace panel{
       Gtk::ButtonBox buttons_;
       Gtk::Button button_1_;
       Gtk::Frame frame_;
-      Gtk::ScrolledWindow scroller_;
-      Gtk::TextView textLog_;             ////////////TICKET #1047 : as a temporary solution, host the error log here 
-      ////////////////////////////////////////////////TICKET #1102 : build a message display box widget
+      widget::ErrorLogWidget errorLog_;
       
       void experiment_1();
     };

src/gui/widget/error-log-widget.hpp

@@ -0,0 +1,121 @@
+/*
+  ERROR-LOG-WIDGET.hpp  -  display of error messages in a text box
+
+  Copyright (C)         Lumiera.org
+    2017,               Hermann Vosseler <Ichthyostega@web.de>
+
+  This program 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 2 of
+  the License, or (at your option) any later version.
+
+  This program 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 this program; if not, write to the Free Software
+  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+
+/** @file error-log-widget.hpp
+ ** Widget to display error messages to the use in non-modal way.
+ ** Notifications are shown in a simple text window with scrollbars; new
+ ** entries can be added with a severity level, causing the widget to scroll
+ ** down to the last line of the content buffer.
+ ** 
+ ** @todo WIP-WIP-WIP as of 9/2017 this is a first draft of a widget to be
+ **       used as receiver by the GuiNotificationService.
+ ** 
+ */
+
+
+#ifndef GUI_WIDGET_ERROR_LOG_WIDGET_H
+#define GUI_WIDGET_ERROR_LOG_WIDGET_H
+
+#include "gui/gtk-base.hpp"
+#include "include/gui-notification-facade.h"
+
+//#include "lib/util.hpp"
+
+//#include <memory>
+//#include <vector>
+
+
+
+namespace gui  {
+namespace widget {
+  
+  
+  /**
+   * @todo WIP-WIP as of 9/2017
+   *       Just a text display box with scrollbars.
+   *       Need to add formatting etc.
+   */
+  class ErrorLogWidget
+    : public Gtk::ScrolledWindow
+    {
+    public:
+     ~ErrorLogWidget() { };
+      
+      ErrorLogWidget()
+        : Gtk::ScrolledWindow()
+        , textLog_{}
+        {
+          set_size_request (200, 50);
+          set_border_width (10);
+          set_shadow_type  (Gtk::SHADOW_NONE);
+          
+          // the vertical scrollbar will always be necessary....
+          set_policy (Gtk::POLICY_AUTOMATIC, Gtk::POLICY_ALWAYS);
+          this->add (textLog_);
+          textLog_.set_editable (false);
+          
+        }
+      
+      
+      void
+      showMsg (NotifyLevel severity, string const& text)
+        {
+          //////////////////////////////////////////////////TICKET #1102 : add formatting according to the error level
+          switch (severity) {
+            case NOTE_ERROR:
+                addEntry ("ERROR: "+text);
+              break;
+            case NOTE_WARN:
+                addEntry ("WARN: "+text);
+              break;
+            default:
+                addEntry (text);
+              break;
+          }
+        }
+      
+      
+    private:/* ===== Internals ===== */
+      
+      Gtk::TextView textLog_;
+      
+      /** add message entry to the (ever growing) text buffer.
+       * @remark According to the Gtkmm tutorial, TextView::scroll_to(iter) is not reliable;
+       *         rather we need to use a text mark and set that text mark to the insert position.
+       *         Actually, there is always one predefined text mark called "insert", which corresponds
+       *         to the text cursor. Thus it suffices to navigate to text end, insert and scroll into view.
+       */
+      void
+      addEntry (string const& text)
+        {
+          auto buff = textLog_.get_buffer();
+          auto cursor = buff->get_insert();
+          buff->move_mark (cursor, buff->end());
+          buff->insert (buff->end(), text);
+          textLog_.scroll_to (cursor);
+        }
+    };
+  
+  
+}}// namespace gui::widget
+#endif /*GUI_WIDGET_ERROR_LOG_WIDGET_H*/

wiki/thinkPad.ichthyo.mm

@@ -1416,8 +1416,10 @@
 </node>
 </node>
 </node>
+<node CREATED="1504203763606" ID="ID_877984616" MODIFIED="1504306254735" TEXT="in ein Widget verpacken">
+<icon BUILTIN="button_ok"/>
+</node>
 <node CREATED="1504203754175" ID="ID_580465154" MODIFIED="1504203763065" TEXT="Fehler-Level erkennen"/>
-<node CREATED="1504203763606" ID="ID_877984616" MODIFIED="1504203769745" TEXT="in ein Widget verpacken"/>
 </node>
 </node>
 </node>