nsTransitionManager.h

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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 http://mozilla.org/MPL/2.0/. */

/* Code to start and animate CSS transitions. */

#ifndef nsTransitionManager_h_

#define nsTransitionManager_h_

#include "mozilla/dom/CSSTransition.h"

#include "AnimationCommon.h"

#include "nsISupportsImpl.h"

class nsPresContext;

class nsCSSPropertyIDSet;

struct nsStyleUIReset;

namespace mozilla {

class AnimatedPropertyIDSet;

class ComputedStyle;

enum class PseudoStyleType : uint8_t;

}  // namespace mozilla

class nsTransitionManager final

    : public mozilla::CommonAnimationManager<mozilla::dom::CSSTransition> {

 public:

  explicit nsTransitionManager(nsPresContext* aPresContext)

      : mozilla::CommonAnimationManager<mozilla::dom::CSSTransition>(

            aPresContext) {}

  ~nsTransitionManager() final = default;

  typedef mozilla::AnimationCollection<mozilla::dom::CSSTransition>

      CSSTransitionCollection;

/**

   * Update transitions for stylo.

*/

  bool UpdateTransitions(mozilla::dom::Element* aElement,

                         mozilla::PseudoStyleType aPseudoType,

                         const mozilla::ComputedStyle& aOldStyle,

                         const mozilla::ComputedStyle& aNewStyle);

 protected:

  typedef nsTArray<RefPtr<mozilla::dom::CSSTransition>>

      OwningCSSTransitionPtrArray;

  // Update transitions. This will start new transitions,

  // replace existing transitions, and stop existing transitions

  // as needed. aDisp and aElement must be non-null.

  // aElementTransitions is the collection of current transitions, and it

  // could be a nullptr if we don't have any transitions.

  bool DoUpdateTransitions(const nsStyleUIReset& aStyle,

                           mozilla::dom::Element* aElement,

                           mozilla::PseudoStyleType aPseudoType,

                           CSSTransitionCollection*& aElementTransitions,

                           const mozilla::ComputedStyle& aOldStyle,

                           const mozilla::ComputedStyle& aNewStyle);

  // Returns whether the transition actually started.

  bool ConsiderInitiatingTransition(

      const mozilla::AnimatedPropertyID&, const nsStyleUIReset& aStyle,

      uint32_t aTransitionIndex, float aDelay, float aDuration,

      mozilla::StyleTransitionBehavior aBehavior,

      mozilla::dom::Element* aElement, mozilla::PseudoStyleType aPseudoType,

      CSSTransitionCollection*& aElementTransitions,

      const mozilla::ComputedStyle& aOldStyle,

      const mozilla::ComputedStyle& aNewStyle,

      mozilla::AnimatedPropertyIDSet& aPropertiesChecked);

  already_AddRefed<mozilla::dom::CSSTransition> DoCreateTransition(

      const mozilla::AnimatedPropertyID& aProperty,

      mozilla::dom::Element* aElement, mozilla::PseudoStyleType aPseudoType,

      const mozilla::ComputedStyle& aNewStyle,

      CSSTransitionCollection*& aElementTransitions,

      mozilla::TimingParams&& aTiming, mozilla::AnimationValue&& aStartValue,

      mozilla::AnimationValue&& aEndValue,

      mozilla::AnimationValue&& aStartForReversingTest, double aReversePortion);

  void DoCancelTransition(mozilla::dom::Element* aElement,

                          mozilla::PseudoStyleType aPseudoType,

                          CSSTransitionCollection*& aElementTransitions,

                          size_t aIndex);

};

#endif /* !defined(nsTransitionManager_h_) */