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36 :
37 : #ifndef MOZILLA_SMILBOOLTYPE_H_
38 : #define MOZILLA_SMILBOOLTYPE_H_
39 :
40 : #include "nsISMILType.h"
41 :
42 : namespace mozilla {
43 :
44 : class SMILBoolType : public nsISMILType
45 : {
46 : public:
47 : // Singleton for nsSMILValue objects to hold onto.
48 : static SMILBoolType sSingleton;
49 :
50 : protected:
51 : // nsISMILType Methods
52 : // -------------------
53 : virtual void Init(nsSMILValue& aValue) const;
54 : virtual void Destroy(nsSMILValue&) const;
55 : virtual nsresult Assign(nsSMILValue& aDest, const nsSMILValue& aSrc) const;
56 : virtual nsresult Add(nsSMILValue& aDest, const nsSMILValue& aValueToAdd,
57 : PRUint32 aCount) const;
58 : virtual bool IsEqual(const nsSMILValue& aLeft,
59 : const nsSMILValue& aRight) const;
60 : virtual nsresult ComputeDistance(const nsSMILValue& aFrom,
61 : const nsSMILValue& aTo,
62 : double& aDistance) const;
63 : virtual nsresult Interpolate(const nsSMILValue& aStartVal,
64 : const nsSMILValue& aEndVal,
65 : double aUnitDistance,
66 : nsSMILValue& aResult) const;
67 :
68 : private:
69 : // Private constructor & destructor: prevent instances beyond my singleton,
70 : // and prevent others from deleting my singleton.
71 1464 : SMILBoolType() {}
72 1487 : ~SMILBoolType() {}
73 : };
74 :
75 : } // namespace mozilla
76 :
77 : #endif // MOZILLA_SMILBOOLTYPE_H_
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