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Issue #2472 - Part 3: Refactor Fullscreen stack to Top Layer stack

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Fullscreen stack isn't part of the spec anymore; it's been changed to a more
generic version called Top Layer stack, which is being used by both full-screen
APIs and dialog elements.

This patch refactors it to Top Layer stack so that it can be reused for dialog
elements.

Top Layer stack spec: https://fullscreen.spec.whatwg.org/#new-stacking-layer
This commit is contained in:
Moonchild 2024-03-07 12:24:06 +01:00 • committed by roytam1
commit 79c7489bb0
5 changed files with 161 additions and 98 deletions
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43
dom/base/nsDocument.h
View file

@ -56,6 +56,7 @@
#include "imgIRequest.h"
#include "mozilla/EventListenerManager.h"
#include "mozilla/EventStates.h"
#include "mozilla/FunctionRef.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/PendingAnimationTracker.h"
#include "mozilla/dom/DOMImplementation.h"
@ -77,6 +78,7 @@
#define XML_DECLARATION_BITS_STANDALONE_EXISTS (1 << 2)
#define XML_DECLARATION_BITS_STANDALONE_YES (1 << 3)
using namespace mozilla;
class nsDOMStyleSheetSetList;
class nsDocument;
@ -638,7 +640,7 @@ public:
using mozilla::dom::DocumentOrShadowRoot::GetElementsByTagName;
using mozilla::dom::DocumentOrShadowRoot::GetElementsByTagNameNS;
using mozilla::dom::DocumentOrShadowRoot::GetElementsByClassName;
// nsIDOMEventTarget
virtual nsresult GetEventTargetParent(
mozilla::EventChainPreVisitor& aVisitor) override;
@ -850,7 +852,7 @@ public:
virtual Element* FindImageMap(const nsAString& aNormalizedMapName) override;
virtual nsTArray<Element*> GetFullscreenStack() const override;
virtual nsTArray<Element*> GetTopLayer() const override;
virtual void AsyncRequestFullScreen(
mozilla::UniquePtr<FullscreenRequest>&& aRequest) override;
virtual void RestorePreviousFullScreenState() override;
@ -860,6 +862,7 @@ public:
virtual nsresult RemoteFrameFullscreenReverted() override;
virtual nsIDocument* GetFullscreenRoot() override;
virtual size_t CountFullscreenElements() const override;
virtual void SetFullscreenRoot(nsIDocument* aRoot) override;
// Returns the size of the mBlockedTrackingNodes array. (nsIDocument.h)
@ -896,23 +899,29 @@ public:
// to move this document into full-screen mode if allowed.
void RequestFullScreen(mozilla::UniquePtr<FullscreenRequest>&& aRequest);
// Removes all elements from the full-screen stack, removing full-scren
// styles from the top element in the stack.
// Removes all elements with the full-screen flag set from the top layer, and
// clears their full-screen flag.
void CleanupFullscreenState();
// Pushes aElement onto the full-screen stack, and removes full-screen styles
// from the former full-screen stack top, and its ancestors, and applies the
// styles to aElement. aElement becomes the new "full-screen element".
bool FullScreenStackPush(Element* aElement);
// Pushes aElement onto the top layer
bool TopLayerPush(Element* aElement);
// Remove the top element from the full-screen stack. Removes the full-screen
// styles from the former top element, and applies them to the new top
// element, if there is one.
void FullScreenStackPop();
// Removes the topmost element which have aPredicate return true from the top
// layer. The removed element, if any, is returned.
Element* TopLayerPop(FunctionRef<bool(Element*)> aPredicateFunc);
// Pops the fullscreen element from the top layer and clears its
// fullscreen flag.
void UnsetFullscreenElement();
// Pushes the given element into the top of top layer and set fullscreen
// flag.
bool SetFullscreenElement(Element* aElement);
// Returns the top element from the full-screen stack.
Element* FullScreenStackTop() override;
Element* GetTopLayerTop() override;
// Return the fullscreen element in the top layer
Element* GetUnretargetedFullScreenElement() override;
// DOM-exposed fullscreen API
bool FullscreenEnabled() override;
@ -1193,10 +1202,8 @@ protected:
// is a weak reference to avoid leaks due to circular references.
nsWeakPtr mScopeObject;
// Stack of full-screen elements. When we request full-screen we push the
// full-screen element onto this stack, and when we cancel full-screen we
// pop one off this stack, restoring the previous full-screen state
nsTArray<nsWeakPtr> mFullScreenStack;
// Stack of top layer elements.
nsTArray<nsWeakPtr> mTopLayer;
// The root of the doc tree in which this document is in. This is only
// non-null when this document is in fullscreen mode.