/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef NS_SMILINTERVAL_H_ #define NS_SMILINTERVAL_H_ #include "nsSMILInstanceTime.h" #include "nsTArray.h" //---------------------------------------------------------------------- // nsSMILInterval class // // A structure consisting of a begin and end time. The begin time must be // resolved (i.e. not indefinite or unresolved). // // For an overview of how this class is related to other SMIL time classes see // the documentation in nsSMILTimeValue.h class nsSMILInterval { public: nsSMILInterval(); nsSMILInterval(const nsSMILInterval& aOther); ~nsSMILInterval(); void Unlink(bool aFiltered = false); const nsSMILInstanceTime* Begin() const { MOZ_ASSERT(mBegin && mEnd, "Requesting Begin() on un-initialized instance time"); return mBegin; } nsSMILInstanceTime* Begin(); const nsSMILInstanceTime* End() const { MOZ_ASSERT(mBegin && mEnd, "Requesting End() on un-initialized instance time"); return mEnd; } nsSMILInstanceTime* End(); void SetBegin(nsSMILInstanceTime& aBegin); void SetEnd(nsSMILInstanceTime& aEnd); void Set(nsSMILInstanceTime& aBegin, nsSMILInstanceTime& aEnd) { SetBegin(aBegin); SetEnd(aEnd); } void FixBegin(); void FixEnd(); typedef nsTArray<RefPtr<nsSMILInstanceTime> > InstanceTimeList; void AddDependentTime(nsSMILInstanceTime& aTime); void RemoveDependentTime(const nsSMILInstanceTime& aTime); void GetDependentTimes(InstanceTimeList& aTimes); // Cue for assessing if this interval can be filtered bool IsDependencyChainLink() const; private: RefPtr<nsSMILInstanceTime> mBegin; RefPtr<nsSMILInstanceTime> mEnd; // nsSMILInstanceTimes to notify when this interval is changed or deleted. InstanceTimeList mDependentTimes; // Indicates if the end points of the interval are fixed or not. // // Note that this is not the same as having an end point whose TIME is fixed // (i.e. nsSMILInstanceTime::IsFixed() returns true). This is because it is // possible to have an end point with a fixed TIME and yet still update the // end point to refer to a different nsSMILInstanceTime object. // // However, if mBegin/EndFixed is true, then BOTH the nsSMILInstanceTime // OBJECT returned for that end point and its TIME value will not change. bool mBeginFixed; bool mEndFixed; }; #endif // NS_SMILINTERVAL_H_