2 files changed, 29 insertions, 2 deletions

diff --git a/libkcal/incidence.cpp b/libkcal/incidence.cpp
index 9c35b1d..762103f 100644
--- a/libkcal/incidence.cpp
+++ b/libkcal/incidence.cpp
@@ -347,3 +347,22 @@ void Incidence::checkCategories()
 
-void Incidence::setCategories(const QStringList &categories)
+void Incidence::addCategories(const QStringList &categories, bool addToRelations ) //addToRelations = false
+{
+    if (mReadOnly) return;
+    int i;
+    for( i = 0; i < categories.count(); ++i ) {
+        if (  !mCategories.contains (categories[i]))
+            mCategories.append( categories[i] );
+    }
+    checkCategories();
+    updated();
+    if ( addToRelations ) {
+        Incidence * inc;
+        QPtrList<Incidence> Relations = relations();
+        for (inc=Relations.first();inc;inc=Relations.next()) {
+            inc->addCategories( categories, true );
+        } 
+    }
+}
+
+void Incidence::setCategories(const QStringList &categories, bool setForRelations ) //setForRelations = false
 {
@@ -353,2 +372,9 @@ void Incidence::setCategories(const QStringList &categories)
   updated();
+  if ( setForRelations ) {
+      Incidence * inc;
+      QPtrList<Incidence> Relations = relations();
+      for (inc=Relations.first();inc;inc=Relations.next()) {
+          inc->setCategories( categories, true );
+      } 
+  }
 }
diff --git a/libkcal/incidence.h b/libkcal/incidence.h
index 327e7dd..ebd50d0 100644
--- a/libkcal/incidence.h
+++ b/libkcal/incidence.h
@@ -153,3 +153,4 @@ class Incidence : public IncidenceBase
     /** set event's applicable categories */
-    void setCategories(const QStringList &categories);
+    void setCategories(const QStringList &categories, bool setForRelations = false);
+    void addCategories(const QStringList &categories, bool addToRelations = false);
     /** set event's categories based on a comma delimited string */