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G4AttUtils.hh
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26 //
27 // Jane Tinslay September 2006
28 //
29 // Visualisation attribute utility functions.
30 //
31 #ifndef G4ATTUTILS_HH
32 #define G4ATTUTILS_HH
33 
34 #include "globals.hh"
35 #include "G4AttDef.hh"
36 #include "G4AttValue.hh"
37 #include "G4String.hh"
38 #include "G4TypeKey.hh"
39 #include <map>
40 #include <vector>
41 
42 namespace G4AttUtils {
43 
44  namespace {
45 
46  // Utility class
47  template <typename T>
48  class HasName {
49  public:
50  HasName(const G4String& name): fName(name) {};
51  bool operator()(const T& value) const
52  {return value.GetName() == fName;}
53  private:
55  };
56 
57  }
58 
59  // Extract attribute definition with given name
60  template <typename T>
61  G4bool ExtractAttDef(const T& object, const G4String& name, G4AttDef& def)
62  {
63  const std::map<G4String, G4AttDef>* attDefs = object.GetAttDefs();
64 
65  std::map<G4String, G4AttDef>::const_iterator iter = attDefs->find(name);
66  if (iter == attDefs->end()) return false;
67 
68  def = iter->second;
69 
70  return true;
71  }
72 
73  // Extract attribute value with given name
74  template <typename T>
75  G4bool ExtractAttValue(const T& object, const G4String& name, G4AttValue& attVal)
76  {
77  std::vector<G4AttValue>* attValues = object.CreateAttValues();
78 
79  std::vector<G4AttValue>::iterator iter = std::find_if(attValues->begin(), attValues->end(),
80  HasName<G4AttValue>(name));
81  if (iter == attValues->end()) return false;
82 
83  attVal = *iter;
84 
85  // Clean up
86  delete attValues;
87 
88  return true;
89  }
90 
91  // Get G4TypeKey information for old style G4AttDef's
92  G4TypeKey GetKey(const G4AttDef& def);
93 
94 }
95 
96 #endif