16398887a4
When event target frame is destroyed, `PresShell::NotifyDestroyingFrame` updates current event target content to the frame content. However, event target of some DOM events need to be `Element`. Therefore, `PresShell::mCurrentEventTarget` needs to store at least the handling `EventMessage` to consider whether the event target can be non-element content node or only element node. So, we need to make `PresShell::EventTargetInfo` store `EventMessage`. Then, we can make `PresShell::NotifyDestroyingFrame` prefer inclusive ancestor element as new event target from the `EventMessage`. Although I don't understand what's going on the reported case, but I found the simple case when event target is changed to a `Text` with the assertion in `PresShell::DispatchEventToDOM`. Therefore, this patch has a new test. Note that if target frame is a frame for element, e.g., when event target is a focused element, `IsForbiddenDispatchingToNonElementContent` result won't change the behavior. Therefore, its implementation is not optimized for non-user input events. Differential Revision: https://phabricator.services.mozilla.com/D217205
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_ElementInlines_h
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#define mozilla_dom_ElementInlines_h
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#include "mozilla/dom/Element.h"
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#include "mozilla/ServoBindingTypes.h"
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#include "nsIContentInlines.h"
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#include "mozilla/dom/Document.h"
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namespace mozilla::dom {
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inline void Element::RegisterActivityObserver() {
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OwnerDoc()->RegisterActivityObserver(this);
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}
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inline void Element::UnregisterActivityObserver() {
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OwnerDoc()->UnregisterActivityObserver(this);
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}
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} // namespace mozilla::dom
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inline mozilla::dom::Element* nsINode::GetFlattenedTreeParentElement() const {
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nsINode* parentNode = GetFlattenedTreeParentNode();
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if MOZ_LIKELY (parentNode && parentNode->IsElement()) {
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return parentNode->AsElement();
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}
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return nullptr;
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}
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inline mozilla::dom::Element* nsINode::GetFlattenedTreeParentElementForStyle()
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const {
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nsINode* parentNode = GetFlattenedTreeParentNodeForStyle();
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if (MOZ_LIKELY(parentNode && parentNode->IsElement())) {
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return parentNode->AsElement();
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}
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return nullptr;
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}
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inline mozilla::dom::Element*
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nsINode::GetInclusiveFlattenedTreeAncestorElement() const {
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nsIContent* content = const_cast<nsIContent*>(nsIContent::FromNode(this));
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while (content && !content->IsElement()) {
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content = content->GetFlattenedTreeParent();
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}
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return mozilla::dom::Element::FromNodeOrNull(content);
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}
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#endif // mozilla_dom_ElementInlines_h
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