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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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_SMILTIMEVALUESPEC_H_
#define NS_SMILTIMEVALUESPEC_H_
#include "mozilla/Attributes.h"
#include "nsSMILTimeValueSpecParams.h"
#include "nsReferencedElement.h"
#include "nsIDOMEventListener.h"
class nsAString;
class nsSMILTimeValue;
class nsSMILTimedElement;
class nsSMILTimeContainer;
class nsSMILInstanceTime;
class nsSMILInterval;
namespace mozilla {
class EventListenerManager;
} // namespace mozilla
//----------------------------------------------------------------------
// nsSMILTimeValueSpec class
//
// An individual element of a 'begin' or 'end' attribute, e.g. '5s', 'a.end'.
// This class handles the parsing of such specifications and performs the
// necessary event handling (for event, repeat, and accesskey specifications)
// and synchronisation (for syncbase specifications).
//
// For an overview of how this class is related to other SMIL time classes see
// the documentation in nsSMILTimeValue.h
class nsSMILTimeValueSpec
{
public:
typedef mozilla::dom::Element Element;
nsSMILTimeValueSpec(nsSMILTimedElement& aOwner, bool aIsBegin);
~nsSMILTimeValueSpec();
nsresult SetSpec(const nsAString& aStringSpec, Element* aContextNode);
void ResolveReferences(nsIContent* aContextNode);
bool IsEventBased() const;
void HandleNewInterval(nsSMILInterval& aInterval,
const nsSMILTimeContainer* aSrcContainer);
void HandleTargetElementChange(Element* aNewTarget);
// For created nsSMILInstanceTime objects
bool DependsOnBegin() const;
void HandleChangedInstanceTime(const nsSMILInstanceTime& aBaseTime,
const nsSMILTimeContainer* aSrcContainer,
nsSMILInstanceTime& aInstanceTimeToUpdate,
bool aObjectChanged);
void HandleDeletedInstanceTime(nsSMILInstanceTime& aInstanceTime);
// Cycle-collection support
void Traverse(nsCycleCollectionTraversalCallback* aCallback);
void Unlink();
protected:
void UpdateReferencedElement(Element* aFrom, Element* aTo);
void UnregisterFromReferencedElement(Element* aElement);
nsSMILTimedElement* GetTimedElement(Element* aElement);
bool IsWhitelistedEvent();
void RegisterEventListener(Element* aElement);
void UnregisterEventListener(Element* aElement);
mozilla::EventListenerManager* GetEventListenerManager(Element* aElement);
void HandleEvent(nsIDOMEvent* aEvent);
bool CheckEventDetail(nsIDOMEvent* aEvent);
bool CheckRepeatEventDetail(nsIDOMEvent* aEvent);
bool CheckAccessKeyEventDetail(nsIDOMEvent* aEvent);
nsSMILTimeValue ConvertBetweenTimeContainers(const nsSMILTimeValue& aSrcTime,
const nsSMILTimeContainer* aSrcContainer);
bool ApplyOffset(nsSMILTimeValue& aTime) const;
nsSMILTimedElement* mOwner;
bool mIsBegin; // Indicates if *we* are a begin spec,
// not to be confused with
// mParams.mSyncBegin which indicates
// if we're synced with the begin of
// the target.
nsSMILTimeValueSpecParams mParams;
class TimeReferenceElement : public nsReferencedElement
{
public:
explicit TimeReferenceElement(nsSMILTimeValueSpec* aOwner) : mSpec(aOwner) { }
void ResetWithElement(Element* aTo) {
RefPtr<Element> from = get();
Unlink();
ElementChanged(from, aTo);
}
protected:
virtual void ElementChanged(Element* aFrom, Element* aTo) override
{
nsReferencedElement::ElementChanged(aFrom, aTo);
mSpec->UpdateReferencedElement(aFrom, aTo);
}
virtual bool IsPersistent() override { return true; }
private:
nsSMILTimeValueSpec* mSpec;
};
TimeReferenceElement mReferencedElement;
class EventListener final : public nsIDOMEventListener
{
~EventListener() {}
public:
explicit EventListener(nsSMILTimeValueSpec* aOwner) : mSpec(aOwner) { }
void Disconnect()
{
mSpec = nullptr;
}
NS_DECL_ISUPPORTS
NS_DECL_NSIDOMEVENTLISTENER
private:
nsSMILTimeValueSpec* mSpec;
};
RefPtr<EventListener> mEventListener;
};
#endif // NS_SMILTIMEVALUESPEC_H_
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