import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

2026-09-10 02:08:38 +09:00 · 2018-01-19 03:59:58 +08:00 · 2018-01-19 03:59:58 +08:00 · dcd9973243
commit dcd9973243
150858 changed files with 23884658 additions and 0 deletions
--- a/layout/style/AnimationCollection.h
+++ b/layout/style/AnimationCollection.h
@ -0,0 +1,147 @@
+/* -*- 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 mozilla_AnimationCollection_h
+#define mozilla_AnimationCollection_h
+
+#include "mozilla/dom/Animation.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/LinkedList.h"
+#include "mozilla/RefPtr.h"
+#include "nsCSSPseudoElements.h"
+#include "nsDOMMutationObserver.h"
+#include "nsTArray.h"
+
+class nsIAtom;
+class nsPresContext;
+
+namespace mozilla {
+
+// Traits class to define the specific atoms used when storing specializations
+// of AnimationCollection as a property on an Element (e.g. which atom
+// to use when storing an AnimationCollection<CSSAnimation> for a ::before
+// pseudo-element).
+template <class AnimationType>
+struct AnimationTypeTraits { };
+
+template <class AnimationType>
+class AnimationCollection
+  : public LinkedListElement<AnimationCollection<AnimationType>>
+{
+  typedef AnimationCollection<AnimationType> SelfType;
+  typedef AnimationTypeTraits<AnimationType> TraitsType;
+
+  AnimationCollection(dom::Element* aElement, nsIAtom* aElementProperty)
+    : mElement(aElement)
+    , mElementProperty(aElementProperty)
+    , mCheckGeneration(0)
+#ifdef DEBUG
+    , mCalledPropertyDtor(false)
+#endif
+  {
+    MOZ_COUNT_CTOR(AnimationCollection);
+  }
+
+public:
+  ~AnimationCollection()
+  {
+    MOZ_ASSERT(mCalledPropertyDtor,
+               "must call destructor through element property dtor");
+    MOZ_COUNT_DTOR(AnimationCollection);
+    LinkedListElement<SelfType>::remove();
+  }
+
+  void Destroy()
+  {
+    // This will call our destructor.
+    mElement->DeleteProperty(mElementProperty);
+  }
+
+  static void PropertyDtor(void *aObject, nsIAtom *aPropertyName,
+                           void *aPropertyValue, void *aData);
+
+  // Get the collection of animations for the given |aElement| and
+  // |aPseudoType|.
+  static AnimationCollection<AnimationType>*
+    GetAnimationCollection(dom::Element* aElement,
+                           CSSPseudoElementType aPseudoType);
+
+  // Given the frame |aFrame| with possibly animated content, finds its
+  // associated collection of animations. If |aFrame| is a generated content
+  // frame, this function may examine the parent frame to search for such
+  // animations.
+  static AnimationCollection<AnimationType>* GetAnimationCollection(
+    const nsIFrame* aFrame);
+
+  // Get the collection of animations for the given |aElement| and
+  // |aPseudoType| or create it if it does not already exist.
+  //
+  // We'll set the outparam |aCreatedCollection| to true if we have
+  // to create the collection and we successfully do so. Otherwise,
+  // we'll set it to false.
+  static AnimationCollection<AnimationType>*
+    GetOrCreateAnimationCollection(dom::Element* aElement,
+                                   CSSPseudoElementType aPseudoType,
+                                   bool* aCreatedCollection);
+
+  bool IsForElement() const { // rather than for a pseudo-element
+    return mElementProperty == TraitsType::ElementPropertyAtom();
+  }
+
+  bool IsForBeforePseudo() const {
+    return mElementProperty == TraitsType::BeforePropertyAtom();
+  }
+
+  bool IsForAfterPseudo() const {
+    return mElementProperty == TraitsType::AfterPropertyAtom();
+  }
+
+  CSSPseudoElementType PseudoElementType() const
+  {
+    if (IsForElement()) {
+      return CSSPseudoElementType::NotPseudo;
+    }
+    if (IsForBeforePseudo()) {
+      return CSSPseudoElementType::before;
+    }
+    MOZ_ASSERT(IsForAfterPseudo(),
+               "::before & ::after should be the only pseudo-elements here");
+    return CSSPseudoElementType::after;
+  }
+
+  static nsString PseudoTypeAsString(CSSPseudoElementType aPseudoType);
+
+  dom::Element *mElement;
+
+  // the atom we use in mElement's prop table (must be a static atom,
+  // i.e., in an atom list)
+  nsIAtom *mElementProperty;
+
+  InfallibleTArray<RefPtr<AnimationType>> mAnimations;
+
+  // For CSS transitions only, we record the most recent generation
+  // for which we've done the transition update, so that we avoid doing
+  // it more than once per style change.
+  // (Note that we also store an animation generation on each EffectSet in
+  // order to track when we need to update animations on layers.)
+  uint64_t mCheckGeneration;
+
+  // Update mCheckGeneration to RestyleManager's count
+  void UpdateCheckGeneration(nsPresContext* aPresContext);
+
+private:
+  static nsIAtom* GetPropertyAtomForPseudoType(
+    CSSPseudoElementType aPseudoType);
+
+#ifdef DEBUG
+  bool mCalledPropertyDtor;
+#endif
+};
+
+} // namespace mozilla
+
+#endif // mozilla_AnimationCollection_h