Col*: Assigned a type-specific base class to each column object

- Base class currently does nothing.

src/columns/ColDepends.h

@@ -27,13 +27,9 @@
 #ifndef INCLUDED_COLDEPENDS
 #define INCLUDED_COLDEPENDS
 
-#include <vector>
-#include <string>
-#include <Column.h>
-#include <Color.h>
-#include <Task.h>
+#include <ColTypeString.h>
 
-class ColumnDepends : public Column
+class ColumnDepends : public ColumnTypeString
 {
 public:
   ColumnDepends ();

src/columns/ColDescription.h

@@ -27,13 +27,9 @@
 #ifndef INCLUDED_COLDESCRIPTION
 #define INCLUDED_COLDESCRIPTION
 
-#include <vector>
-#include <string>
-#include <Column.h>
-#include <Color.h>
-#include <Task.h>
+#include <ColTypeString.h>
 
-class ColumnDescription : public Column
+class ColumnDescription : public ColumnTypeString
 {
 public:
   ColumnDescription ();

src/columns/ColID.h

@@ -27,13 +27,9 @@
 #ifndef INCLUDED_COLID
 #define INCLUDED_COLID
 
-#include <vector>
-#include <string>
-#include <Column.h>
-#include <Color.h>
-#include <Task.h>
+#include <ColTypeNumeric.h>
 
-class ColumnID : public Column
+class ColumnID : public ColumnTypeNumeric
 {
 public:
   ColumnID ();

src/columns/ColIMask.h

@@ -27,13 +27,9 @@
 #ifndef INCLUDED_COLIMASK
 #define INCLUDED_COLIMASK
 
-#include <vector>
-#include <string>
-#include <Column.h>
-#include <Color.h>
-#include <Task.h>
+#include <ColTypeNumeric.h>
 
-class ColumnIMask : public Column
+class ColumnIMask : public ColumnTypeNumeric
 {
 public:
   ColumnIMask ();

src/columns/ColMask.h

@@ -27,13 +27,9 @@
 #ifndef INCLUDED_COLMASK
 #define INCLUDED_COLMASK
 
-#include <vector>
-#include <string>
-#include <Column.h>
-#include <Color.h>
-#include <Task.h>
+#include <ColTypeString.h>
 
-class ColumnMask : public Column
+class ColumnMask : public ColumnTypeString
 {
 public:
   ColumnMask ();

src/columns/ColParent.h

@@ -27,13 +27,9 @@
 #ifndef INCLUDED_COLPARENT
 #define INCLUDED_COLPARENT
 
-#include <vector>
-#include <string>
-#include <Column.h>
-#include <Color.h>
-#include <Task.h>
+#include <ColTypeString.h>
 
-class ColumnParent : public Column
+class ColumnParent : public ColumnTypeString
 {
 public:
   ColumnParent ();

src/columns/ColProject.h

@@ -27,13 +27,9 @@
 #ifndef INCLUDED_COLPROJECT
 #define INCLUDED_COLPROJECT
 
-#include <vector>
-#include <string>
-#include <Column.h>
-#include <Color.h>
-#include <Task.h>
+#include <ColTypeString.h>
 
-class ColumnProject : public Column
+class ColumnProject : public ColumnTypeString
 {
 public:
   ColumnProject ();

src/columns/ColRecur.h

@@ -27,13 +27,9 @@
 #ifndef INCLUDED_COLRECUR
 #define INCLUDED_COLRECUR
 
-#include <vector>
-#include <string>
-#include <Column.h>
-#include <Color.h>
-#include <Task.h>
+#include <ColTypeDuration.h>
 
-class ColumnRecur : public Column
+class ColumnRecur : public ColumnTypeDuration
 {
 public:
   ColumnRecur ();

src/columns/ColStatus.h

@@ -27,13 +27,9 @@
 #ifndef INCLUDED_COLSTATUS
 #define INCLUDED_COLSTATUS
 
-#include <vector>
-#include <string>
-#include <Column.h>
-#include <Color.h>
-#include <Task.h>
+#include <ColTypeString.h>
 
-class ColumnStatus : public Column
+class ColumnStatus : public ColumnTypeString
 {
 public:
   ColumnStatus ();

src/columns/ColTags.h

@@ -27,13 +27,9 @@
 #ifndef INCLUDED_COLTAGS
 #define INCLUDED_COLTAGS
 
-#include <vector>
-#include <string>
-#include <Column.h>
-#include <Color.h>
-#include <Task.h>
+#include <ColTypeString.h>
 
-class ColumnTags : public Column
+class ColumnTags : public ColumnTypeString
 {
 public:
   ColumnTags ();

src/columns/ColTypeDate.cpp

@@ -25,9 +25,8 @@
 ////////////////////////////////////////////////////////////////////////////////
 
 #include <cmake.h>
-#include <math.h>
-#include <Context.h>
 #include <ColTypeDate.h>
+#include <Context.h>
 #include <ISO8601.h>
 #include <text.h>
 #include <i18n.h>

src/columns/ColUDA.h

@@ -27,11 +27,7 @@
 #ifndef INCLUDED_COLUDA
 #define INCLUDED_COLUDA
 
-#include <vector>
-#include <string>
 #include <Column.h>
-#include <Color.h>
-#include <Task.h>
 
 class ColumnUDA : public Column
 {

src/columns/ColUUID.h

@@ -27,13 +27,9 @@
 #ifndef INCLUDED_COLUUID
 #define INCLUDED_COLUUID
 
-#include <vector>
-#include <string>
-#include <Column.h>
-#include <Color.h>
-#include <Task.h>
+#include <ColTypeString.h>
 
-class ColumnUUID : public Column
+class ColumnUUID : public ColumnTypeString
 {
 public:
   ColumnUUID ();

src/columns/ColUrgency.h

@@ -27,13 +27,9 @@
 #ifndef INCLUDED_COLURGENCY
 #define INCLUDED_COLURGENCY
 
-#include <vector>
-#include <string>
-#include <Column.h>
-#include <Color.h>
-#include <Task.h>
+#include <ColTypeNumeric.h>
 
-class ColumnUrgency : public Column
+class ColumnUrgency : public ColumnTypeNumeric
 {
 public:
   ColumnUrgency ();