configmgr/source/inc/mergechange.hxx

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  30
  31 #ifndef INCLUDED_CONFIGMGR_MERGECHANGE_HXX
  32 #define INCLUDED_CONFIGMGR_MERGECHANGE_HXX
  33
  34 #include "namecreator.hxx"
  35 #include "change.hxx"
  36 #include "treechangelist.hxx"
  37
  38 namespace configmgr
  39 {
  40     // method that applies changes on a existing subtree
  41     void combineUpdates     (SubtreeChange  const& _anUpdate, SubtreeChange& _aCombinedUpdate);
  42
  43     // -----------------------------------------------------------------------------
  44     class OStripDefaults : private ChangeTreeModification
  45     {
  46         SubtreeChange& m_rParent;
  47     public:
  48         OStripDefaults(SubtreeChange& _rSubtree) : m_rParent(_rSubtree) {}
  49
  50         bool isEmpty() const { return m_rParent.size() == 0; }
  51
  52         OStripDefaults& strip();
  53
  54         static bool strip(SubtreeChange& _rSubtree)
  55         {
  56             return OStripDefaults(_rSubtree).strip().isEmpty();
  57         }
  58     private:
  59         void stripOne(Change& _rChange);
  60
  61         virtual void handle(ValueChange& _rValueNode);
  62         virtual void handle(AddNode& _rAddNode);
  63         virtual void handle(RemoveNode& _rRemoveNode);
  64         virtual void handle(SubtreeChange& _rSubtree);
  65     };
  66
  67     // -----------------------------------------------------------------------------
  68 } // namespace configmgr
  69
  70 #endif
  71