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Bug 1123523 - Part 7: Add utility functions to notify registered nsIAnimationObservers. r=smaug

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This commit is contained in:
Cameron McCormack 2015-03-14 16:34:40 +11:00
parent 9f5353ccbd
commit 9bbb3dfbe6
2 changed files with 101 additions and 0 deletions
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92
dom/base/nsNodeUtils.cpp
View File

@ -71,6 +71,34 @@ using mozilla::AutoJSContext;
} \
PR_END_MACRO
#define IMPL_ANIMATION_NOTIFICATION(func_, content_, params_) \
PR_BEGIN_MACRO \
bool needsEnterLeave = doc->MayHaveDOMMutationObservers(); \
if (needsEnterLeave) { \
nsDOMMutationObserver::EnterMutationHandling(); \
} \
nsINode* node = content_; \
do { \
nsINode::nsSlots* slots = node->GetExistingSlots(); \
if (slots && !slots->mMutationObservers.IsEmpty()) { \
/* No need to explicitly notify the first observer first \
since that'll happen anyway. */ \
NS_OBSERVER_ARRAY_NOTIFY_OBSERVERS_WITH_QI( \
slots->mMutationObservers, nsIMutationObserver, \
nsIAnimationObserver, func_, params_); \
} \
ShadowRoot* shadow = ShadowRoot::FromNode(node); \
if (shadow) { \
node = shadow->GetPoolHost(); \
} else { \
node = node->GetParentNode(); \
} \
} while (node); \
if (needsEnterLeave) { \
nsDOMMutationObserver::LeaveMutationHandling(); \
} \
PR_END_MACRO
void
nsNodeUtils::CharacterDataWillChange(nsIContent* aContent,
CharacterDataChangeInfo* aInfo)
@ -185,6 +213,70 @@ nsNodeUtils::ContentRemoved(nsINode* aContainer,
aPreviousSibling));
}
static inline Element*
GetTarget(AnimationPlayer* aPlayer)
{
Animation* source = aPlayer->GetSource();
if (!source) {
return nullptr;
}
Element* target;
nsCSSPseudoElements::Type pseudoType;
source->GetTarget(target, pseudoType);
// If the animation targets a pseudo-element, we don't dispatch
// notifications for it. (In the future we will have PseudoElement
// objects we can use as the target of the notifications.)
if (pseudoType != nsCSSPseudoElements::ePseudo_NotPseudoElement) {
return nullptr;
}
return source->GetTarget();
}
void
nsNodeUtils::AnimationAdded(AnimationPlayer* aPlayer)
{
Element* target = GetTarget(aPlayer);
if (!target) {
return;
}
nsIDocument* doc = target->OwnerDoc();
if (doc->MayHaveAnimationObservers()) {
IMPL_ANIMATION_NOTIFICATION(AnimationAdded, target, (aPlayer));
}
}
void
nsNodeUtils::AnimationChanged(AnimationPlayer* aPlayer)
{
Element* target = GetTarget(aPlayer);
if (!target) {
return;
}
nsIDocument* doc = target->OwnerDoc();
if (doc->MayHaveAnimationObservers()) {
IMPL_ANIMATION_NOTIFICATION(AnimationChanged, target, (aPlayer));
}
}
void
nsNodeUtils::AnimationRemoved(AnimationPlayer* aPlayer)
{
Element* target = GetTarget(aPlayer);
if (!target) {
return;
}
nsIDocument* doc = target->OwnerDoc();
if (doc->MayHaveAnimationObservers()) {
IMPL_ANIMATION_NOTIFICATION(AnimationRemoved, target, (aPlayer));
}
}
void
nsNodeUtils::LastRelease(nsINode* aNode)
{

9
dom/base/nsNodeUtils.h
View File

@ -16,6 +16,11 @@ class nsIVariant;
class nsIDOMNode;
template<class E> class nsCOMArray;
class nsCycleCollectionTraversalCallback;
namespace mozilla {
namespace dom {
class AnimationPlayer;
}
}
class nsNodeUtils
{
@ -122,6 +127,10 @@ public:
}
}
static void AnimationAdded(mozilla::dom::AnimationPlayer* aPlayer);
static void AnimationChanged(mozilla::dom::AnimationPlayer* aPlayer);
static void AnimationRemoved(mozilla::dom::AnimationPlayer* aPlayer);
/**
* To be called when reference count of aNode drops to zero.
* @param aNode The node which is going to be deleted.