NotificationDisplay: investigate ways to define the markup tag(s)

...with the option to expand this approach later to use a central StyleManager (#1169)

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

@@ -59,7 +59,7 @@
 #include "gui/gtk-base.hpp"
 #include "gui/model/expander-revealer.hpp"
 #include "include/gui-notification-facade.h"
-
+#include "lib/symbol.hpp"
 //#include "lib/util.hpp"
 
 //#include <memory>
@@ -70,8 +70,30 @@
 namespace gui  {
 namespace widget {
   
+  using lib::Literal;
   using std::vector;
   
+  namespace {
+    
+    const Literal TAG_ERROR{"ERROR"};           /////////////////////////////////////////////////////////////TICKET #1168 : find a way to manage style of custom extended UI elements
+    
+    
+    using Tag = Glib::RefPtr<Gtk::TextBuffer::Tag>;
+    
+    /**
+     * @internal inject some generic standard styles for use in `TextView` components.
+     * @param tagTable reference to a `TagTable` bound with an existing `Gtk::TextBuffer`.
+     * @todo 9/2018 dummy placeholder code, later to be transformed into a framework    /////////////////////TICKET #1168 : find a way to manage style of custom extended UI elements
+     */
+    inline void
+    populateStandardTextTags (Glib::RefPtr<TextBuffer::TagTable> tagTable)
+    {
+      Tag errorTag = Gtk::TextBuffer::Tag::create();
+      errorTag->property_background() = "yellow";                ////////////////////////////////////////////TICKET #1168 : should be retrieved from a central location
+      tagTable->add (errorTag);
+    }
+  }
+  
   
   /**
    * @todo WIP-WIP as of 9/2017
@@ -104,6 +126,8 @@ namespace widget {
           set_policy (Gtk::POLICY_AUTOMATIC, Gtk::POLICY_ALWAYS);
           this->add (textLog_);
           textLog_.set_editable (false);
+          
+          populateStandardTextTags (textLog_.get_buffer()->get_tag_table());
         }
       
       model::Expander expand;
@@ -159,24 +183,6 @@ namespace widget {
       
     private:/* ===== Internals ===== */
       
-      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;
-          }
-        }
-      
-      
       /** 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.
@@ -187,7 +193,7 @@ namespace widget {
        * [GTKmm tutorial]: https://developer.gnome.org/gtkmm-tutorial/stable/sec-textview-buffer.html.en#textview-marks
        * [insert-mark]: https://developer.gnome.org/gtkmm/3.22/classGtk_1_1TextMark.html#details
        */
-      void
+      auto
       addEntry (string const& text)
         {
           auto buff = textLog_.get_buffer();
@@ -195,6 +201,25 @@ namespace widget {
           buff->move_mark (cursor, buff->end());
           buff->insert (buff->end(), text);
           textLog_.scroll_to (cursor);
+          return cursor;
+        }
+      
+      void
+      showMsg (NotifyLevel severity, string const& text)
+        {
+          //////////////////////////////////////////////////TICKET #1102 : add formatting according to the error level
+          switch (severity) {
+            case NOTE_ERROR:
+                errorMarks_.emplace_back(
+                    addEntry ("ERROR: "+text));
+              break;
+            case NOTE_WARN:
+                addEntry ("WARN: "+text);
+              break;
+            default:
+                addEntry (text);
+              break;
+          }
         }
     };
   

wiki/thinkPad.ichthyo.mm

@@ -1985,17 +1985,24 @@
 </node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1537661787387" ID="ID_20967740" MODIFIED="1537661797859" TEXT="vorl&#xe4;ufig hart verdrahten">
 <icon BUILTIN="flag-yellow"/>
+<node CREATED="1537752420235" ID="ID_922959985" MODIFIED="1537752432342" TEXT="Funktion zum Populieren der Tag-Table"/>
+<node CREATED="1537752434280" ID="ID_1053927695" MODIFIED="1537752468330" TEXT="k&#xf6;nnte in den StyleManager wandern">
+<arrowlink COLOR="#b3a9c1" DESTINATION="ID_758790930" ENDARROW="Default" ENDINCLINATION="96;-5;" ID="Arrow_ID_1283375190" STARTARROW="None" STARTINCLINATION="-17;39;"/>
+<icon BUILTIN="idea"/>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1537661799354" ID="ID_758790930" MODIFIED="1537661906780" TEXT="Style-Manager vorsehen">
+</node>
+<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1537661799354" ID="ID_758790930" MODIFIED="1537752455019" TEXT="Style-Manager vorsehen">
 <arrowlink COLOR="#8f81b2" DESTINATION="ID_407535546" ENDARROW="Default" ENDINCLINATION="3769;-2728;" ID="Arrow_ID_1203118148" STARTARROW="None" STARTINCLINATION="-1594;0;"/>
+<linktarget COLOR="#877796" DESTINATION="ID_758790930" ENDARROW="Default" ENDINCLINATION="315;0;" ID="Arrow_ID_564282272" SOURCE="ID_951505172" STARTARROW="None" STARTINCLINATION="649;0;"/>
+<linktarget COLOR="#b3a9c1" DESTINATION="ID_758790930" ENDARROW="Default" ENDINCLINATION="96;-5;" ID="Arrow_ID_1283375190" SOURCE="ID_1053927695" STARTARROW="None" STARTINCLINATION="-17;39;"/>
 <icon BUILTIN="flag-yellow"/>
 </node>
 </node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1537571928143" ID="ID_221069673" MODIFIED="1537571967923" TEXT="Tag f&#xfc;r Warnung">
 <icon BUILTIN="flag-yellow"/>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1537571934143" ID="ID_447258227" MODIFIED="1537571967219" TEXT="Tag f&#xfc;r Fehler">
+<node COLOR="#338800" CREATED="1537571934143" ID="ID_447258227" MODIFIED="1537752476750" TEXT="Tag f&#xfc;r Fehler">
-<icon BUILTIN="flag-yellow"/>
+<icon BUILTIN="button_ok"/>
 </node>
 </node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1537571949893" ID="ID_328949056" MODIFIED="1537571962861" TEXT="Tags zuweisen">
@@ -2102,7 +2109,8 @@
 <icon BUILTIN="flag-yellow"/>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1534725283337" ID="ID_1256364821" MODIFIED="1534725298760" TEXT="farbigen Rahmen">
 <icon BUILTIN="flag-yellow"/>
-<node CREATED="1534725366734" ID="ID_951505172" MODIFIED="1534725377925" TEXT="vorl&#xe4;ufig feste Farbe">
+<node CREATED="1534725366734" ID="ID_951505172" MODIFIED="1537752365219" TEXT="vorl&#xe4;ufig feste Farbe">
+<arrowlink COLOR="#877796" DESTINATION="ID_758790930" ENDARROW="Default" ENDINCLINATION="315;0;" ID="Arrow_ID_564282272" STARTARROW="None" STARTINCLINATION="649;0;"/>
 <icon BUILTIN="yes"/>
 </node>
 </node>