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/* -*- 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 */
#include "mozilla/SMILInstanceTime.h"
#include "nsTArray.h"
namespace mozilla {
// SMILInterval 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 SMILTimeValue.h
class SMILInterval {
SMILInterval(const SMILInterval& aOther);
void Unlink(bool aFiltered = false);
const SMILInstanceTime* Begin() const {
MOZ_ASSERT(mBegin && mEnd,
"Requesting Begin() on un-initialized instance time");
return mBegin;
SMILInstanceTime* Begin();
const SMILInstanceTime* End() const {
MOZ_ASSERT(mBegin && mEnd,
"Requesting End() on un-initialized instance time");
return mEnd;
SMILInstanceTime* End();
void SetBegin(SMILInstanceTime& aBegin);
void SetEnd(SMILInstanceTime& aEnd);
void Set(SMILInstanceTime& aBegin, SMILInstanceTime& aEnd) {
void FixBegin();
void FixEnd();
using InstanceTimeList = nsTArray<RefPtr<SMILInstanceTime>>;
void AddDependentTime(SMILInstanceTime& aTime);
void RemoveDependentTime(const SMILInstanceTime& aTime);
void GetDependentTimes(InstanceTimeList& aTimes);
// Cue for assessing if this interval can be filtered
bool IsDependencyChainLink() const;
RefPtr<SMILInstanceTime> mBegin;
RefPtr<SMILInstanceTime> mEnd;
// SMILInstanceTimes 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. SMILInstanceTime::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 SMILInstanceTime object.
// However, if mBegin/EndFixed is true, then BOTH the SMILInstanceTime
// OBJECT returned for that end point and its TIME value will not change.
bool mBeginFixed;
bool mEndFixed;
} // namespace mozilla