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-rw-r--r--dom/events/DOMEventTargetHelper.cpp2
-rwxr-xr-xdom/events/Event.cpp7
-rwxr-xr-xdom/events/Event.h2
-rw-r--r--dom/events/EventDispatcher.cpp107
-rw-r--r--dom/events/EventDispatcher.h41
5 files changed, 155 insertions, 4 deletions
diff --git a/dom/events/DOMEventTargetHelper.cpp b/dom/events/DOMEventTargetHelper.cpp
index ee03463ef..90ee61059 100644
--- a/dom/events/DOMEventTargetHelper.cpp
+++ b/dom/events/DOMEventTargetHelper.cpp
@@ -331,7 +331,7 @@ nsresult
DOMEventTargetHelper::GetEventTargetParent(EventChainPreVisitor& aVisitor)
{
aVisitor.mCanHandle = true;
- aVisitor.mParentTarget = nullptr;
+ aVisitor.SetParentTarget(nullptr, false);
return NS_OK;
}
diff --git a/dom/events/Event.cpp b/dom/events/Event.cpp
index 280e40ad5..def298228 100755
--- a/dom/events/Event.cpp
+++ b/dom/events/Event.cpp
@@ -11,6 +11,7 @@
#include "mozilla/dom/ShadowRoot.h"
#include "mozilla/ContentEvents.h"
#include "mozilla/DOMEventTargetHelper.h"
+#include "mozilla/EventDispatcher.h"
#include "mozilla/EventStateManager.h"
#include "mozilla/InternalMutationEvent.h"
#include "mozilla/dom/Performance.h"
@@ -298,6 +299,12 @@ Event::GetCurrentTarget() const
return mEvent->GetCurrentDOMEventTarget();
}
+void
+Event::ComposedPath(nsTArray<RefPtr<EventTarget>>& aPath)
+{
+ EventDispatcher::GetComposedPathFor(mEvent, aPath);
+}
+
NS_IMETHODIMP
Event::GetCurrentTarget(nsIDOMEventTarget** aCurrentTarget)
{
diff --git a/dom/events/Event.h b/dom/events/Event.h
index 0817aa809..4f1fcc827 100755
--- a/dom/events/Event.h
+++ b/dom/events/Event.h
@@ -157,6 +157,8 @@ public:
EventTarget* GetTarget() const;
EventTarget* GetCurrentTarget() const;
+ void ComposedPath(nsTArray<RefPtr<EventTarget>>& aPath);
+
uint16_t EventPhase() const;
// xpidl implementation
diff --git a/dom/events/EventDispatcher.cpp b/dom/events/EventDispatcher.cpp
index 740e611e4..1094c08c2 100644
--- a/dom/events/EventDispatcher.cpp
+++ b/dom/events/EventDispatcher.cpp
@@ -246,6 +246,36 @@ public:
return mFlags.mPreHandleEventOnly;
}
+ void SetRootOfClosedTree(bool aSet)
+ {
+ mFlags.mRootOfClosedTree = aSet;
+ }
+
+ bool IsRootOfClosedTree()
+ {
+ return mFlags.mRootOfClosedTree;
+ }
+
+ void SetIsSlotInClosedTree(bool aSet)
+ {
+ mFlags.mIsSlotInClosedTree = aSet;
+ }
+
+ bool IsSlotInClosedTree()
+ {
+ return mFlags.mIsSlotInClosedTree;
+ }
+
+ void SetIsChromeHandler(bool aSet)
+ {
+ mFlags.mIsChromeHandler = aSet;
+ }
+
+ bool IsChromeHandler()
+ {
+ return mFlags.mIsChromeHandler;
+ }
+
void SetMayHaveListenerManager(bool aMayHave)
{
mFlags.mMayHaveManager = aMayHave;
@@ -344,6 +374,9 @@ private:
bool mIsChromeContent : 1;
bool mWantsPreHandleEvent : 1;
bool mPreHandleEventOnly : 1;
+ bool mRootOfClosedTree : 1;
+ bool mIsSlotInClosedTree : 1;
+ bool mIsChromeHandler : 1;
private:
typedef uint32_t RawFlags;
void SetRawFlags(RawFlags aRawFlags)
@@ -390,6 +423,7 @@ EventTargetChainItem::GetEventTargetParent(EventChainPreVisitor& aVisitor)
SetMayHaveListenerManager(aVisitor.mMayHaveListenerManager);
SetWantsPreHandleEvent(aVisitor.mWantsPreHandleEvent);
SetPreHandleEventOnly(aVisitor.mWantsPreHandleEvent && !aVisitor.mCanHandle);
+ SetRootOfClosedTree(aVisitor.mRootOfClosedTree);
mItemFlags = aVisitor.mItemFlags;
mItemData = aVisitor.mItemData;
}
@@ -761,16 +795,19 @@ EventDispatcher::Dispatch(nsISupports* aTarget,
targetEtci->SetNewTarget(t);
EventTargetChainItem* topEtci = targetEtci;
targetEtci = nullptr;
- while (preVisitor.mParentTarget) {
- EventTarget* parentTarget = preVisitor.mParentTarget;
+ while (preVisitor.GetParentTarget()) {
+ EventTarget* parentTarget = preVisitor.GetParentTarget();
EventTargetChainItem* parentEtci =
- EventTargetChainItem::Create(chain, preVisitor.mParentTarget, topEtci);
+ EventTargetChainItem::Create(chain, parentTarget, topEtci);
if (!parentEtci->IsValid()) {
EventTargetChainItem::DestroyLast(chain, parentEtci);
rv = NS_ERROR_FAILURE;
break;
}
+ parentEtci->SetIsSlotInClosedTree(preVisitor.mParentIsSlotInClosedTree);
+ parentEtci->SetIsChromeHandler(preVisitor.mParentIsChromeHandler);
+
// Item needs event retargetting.
if (preVisitor.mEventTargetAtParent) {
// Need to set the target of the event
@@ -814,9 +851,13 @@ EventDispatcher::Dispatch(nsISupports* aTarget,
}
// Handle the chain.
EventChainPostVisitor postVisitor(preVisitor);
+ MOZ_RELEASE_ASSERT(!aEvent->mPath);
+ aEvent->mPath = &chain;
EventTargetChainItem::HandleEventTargetChain(chain, postVisitor,
aCallback, cd);
+ aEvent->mPath = nullptr;
+
preVisitor.mEventStatus = postVisitor.mEventStatus;
// If the DOM event was created during event flow.
if (!preVisitor.mDOMEvent && postVisitor.mDOMEvent) {
@@ -1128,4 +1169,64 @@ EventDispatcher::CreateEvent(EventTarget* aOwner,
return nullptr;
}
+// static
+void
+EventDispatcher::GetComposedPathFor(WidgetEvent* aEvent,
+ nsTArray<RefPtr<EventTarget>>& aPath)
+{
+ nsTArray<EventTargetChainItem>* path = aEvent->mPath;
+ if (!path || path->IsEmpty() || !aEvent->mCurrentTarget) {
+ return;
+ }
+
+ EventTarget* currentTarget =
+ aEvent->mCurrentTarget->GetTargetForEventTargetChain();
+ if (!currentTarget) {
+ return;
+ }
+
+ AutoTArray<EventTarget*, 128> reversedComposedPath;
+ bool hasSeenCurrentTarget = false;
+ uint32_t hiddenSubtreeLevel = 0;
+ for (uint32_t i = path->Length(); i; ) {
+ --i;
+
+ EventTargetChainItem& item = path->ElementAt(i);
+ if (item.PreHandleEventOnly()) {
+ continue;
+ }
+
+ if (!hasSeenCurrentTarget && currentTarget == item.CurrentTarget()) {
+ hasSeenCurrentTarget = true;
+ } else if (hasSeenCurrentTarget && item.IsRootOfClosedTree()) {
+ ++hiddenSubtreeLevel;
+ }
+
+ if (hiddenSubtreeLevel == 0) {
+ reversedComposedPath.AppendElement(item.CurrentTarget());
+ }
+
+ if (item.IsSlotInClosedTree() && hiddenSubtreeLevel > 0) {
+ --hiddenSubtreeLevel;
+ }
+
+ if (item.IsChromeHandler()) {
+ if (hasSeenCurrentTarget) {
+ // The current behavior is to include only EventTargets from
+ // either chrome side of event path or content side, not from both.
+ break;
+ }
+
+ // Need to start all over to collect the composed path on content side.
+ reversedComposedPath.Clear();
+ }
+ }
+
+ aPath.SetCapacity(reversedComposedPath.Length());
+ for (uint32_t i = reversedComposedPath.Length(); i; ) {
+ --i;
+ aPath.AppendElement(reversedComposedPath[i]->GetTargetForDOMEvent());
+ }
+}
+
} // namespace mozilla
diff --git a/dom/events/EventDispatcher.h b/dom/events/EventDispatcher.h
index 618c863d5..8a34e6bf7 100644
--- a/dom/events/EventDispatcher.h
+++ b/dom/events/EventDispatcher.h
@@ -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
@@ -195,10 +214,29 @@ 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.
*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-25 22:36:34 +0000