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Bug 1412775 - Implement Event.composedPath

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Tag #1375
This commit is contained in:
Matt A. Tobin 2020-04-17 07:30:43 -04:00 • committed by Roy Tam
commit 2ee3ce62fc
24 changed files with 194 additions and 131 deletions
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41
dom/events/EventDispatcher.h
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@ -124,6 +124,9 @@ public:
, mWantsWillHandleEvent(false)
, mMayHaveListenerManager(true)
, mWantsPreHandleEvent(false)
, mRootOfClosedTree(false)
, mParentIsSlotInClosedTree(false)
, mParentIsChromeHandler(false)
, mParentTarget(nullptr)
, mEventTargetAtParent(nullptr)
{
@ -139,10 +142,26 @@ public:
mWantsWillHandleEvent = false;
mMayHaveListenerManager = true;
mWantsPreHandleEvent = false;
mRootOfClosedTree = false;
mParentIsSlotInClosedTree = false;
mParentIsChromeHandler = false;
mParentTarget = nullptr;
mEventTargetAtParent = nullptr;
}
dom::EventTarget* GetParentTarget()
{
return mParentTarget;
}
void SetParentTarget(dom::EventTarget* aParentTarget, bool aIsChromeHandler)
{
mParentTarget = aParentTarget;
if (mParentTarget) {
mParentIsChromeHandler = aIsChromeHandler;
}
}
/**
* Member that must be set in GetEventTargetParent by event targets. If set to
* false, indicates that this event target will not be handling the event and
@ -194,11 +213,30 @@ public:
*/
bool mWantsPreHandleEvent;
/**
* True if the current target is either closed ShadowRoot or root of
* chrome only access tree (for example native anonymous content).
*/
bool mRootOfClosedTree;
/**
* True if mParentTarget is HTMLSlotElement in a closed shadow tree and the
* current target is assigned to that slot.
*/
bool mParentIsSlotInClosedTree;
/**
* True if mParentTarget is a chrome handler in the event path.
*/
bool mParentIsChromeHandler;
private:
/**
* Parent item in the event target chain.
*/
dom::EventTarget* mParentTarget;
public:
/**
* If the event needs to be retargeted, this is the event target,
* which should be used when the event is handled at mParentTarget.
@ -281,6 +319,9 @@ public:
WidgetEvent* aEvent,
const nsAString& aEventType);
static void GetComposedPathFor(WidgetEvent* aEvent,
nsTArray<RefPtr<dom::EventTarget>>& aPath);
/**
* Called at shutting down.
*/