Integrated Priority column modification to the ColPriority object, from Task core.

src/Task.cpp

@@ -1804,12 +1804,6 @@ void Task::modify (
             }
           }
 
-          // Priorities are converted to upper case.
-          else if (name == "priority")
-          {
-            (*this).set (name, upperCase (value));
-          }
-
           // Dates are special, maybe.
           else if (column->type () == "date")
           {
@@ -1879,9 +1873,19 @@ void Task::modify (
               throw format (STRING_UDA_NUMERIC, result);
           }
 
-          // By default, just add/remove it.
+          // Try to use modify method, otherwise just continue to the final option.
+          else if (column->can_modify ())
+          {
+            // column->modify () contains the logic for the specific column
+            // and returns the appropriate value for (*this).set ()
+            if (column->validate (value))
+              (*this).set (name, column->modify (value));
+            else
+              throw format (STRING_INVALID_MOD, name, value);
+          }
           else
           {
+            // Final default action
             if (column->validate (value))
               (*this).set (name, value);
             else

src/columns/ColPriority.cpp

@@ -119,3 +119,15 @@ void ColumnPriority::render (
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+std::string ColumnPriority::modify (std::string& value)
+{
+  return upperCase (value);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+bool ColumnPriority::can_modify ()
+{
+  return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////

src/columns/ColPriority.h

@@ -44,6 +44,8 @@ public:
   void setStyle (const std::string&);
   void measure (Task&, unsigned int&, unsigned int&);
   void render (std::vector <std::string>&, Task&, int, Color&);
+  std::string modify (std::string&);
+  bool can_modify ();
 
 private:
 };

src/columns/Column.cpp

@@ -323,3 +323,17 @@ void Column::render (std::vector <std::string>&, Task&, int, Color&)
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+// No L10N.
+bool Column::can_modify ()
+{
+  return false;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// No L10N.
+std::string Column::modify (std::string& value)
+{
+  throw std::string ("Virtual method Column::modify not overridden.");
+}
+
+////////////////////////////////////////////////////////////////////////////////

src/columns/Column.h

@@ -64,6 +64,8 @@ public:
   virtual void renderHeader (std::vector <std::string>&, int, Color&);
   virtual void render (std::vector <std::string>&, const std::string&, int, Color&);
   virtual void render (std::vector <std::string>&, Task&, int, Color&);
+  virtual bool can_modify ();
+  virtual std::string modify (std::string&);
 
 protected:
   std::string _name;