gecko-dev/dom/base/ElementInlines.h

98 строки
2.3 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_ElementInlines_h
#define mozilla_dom_ElementInlines_h
#include "mozilla/dom/Element.h"
#include "mozilla/ServoBindings.h"
#include "nsIContentInlines.h"
#include "nsIDocument.h"
#include "nsIPresShell.h"
#include "nsIPresShellInlines.h"
namespace mozilla {
namespace dom {
inline void
Element::RegisterActivityObserver()
{
OwnerDoc()->RegisterActivityObserver(this);
}
inline void
Element::UnregisterActivityObserver()
{
OwnerDoc()->UnregisterActivityObserver(this);
}
inline Element*
Element::GetFlattenedTreeParentElement() const
{
nsINode* parentNode = GetFlattenedTreeParentNode();
if MOZ_LIKELY(parentNode && parentNode->IsElement()) {
return parentNode->AsElement();
}
return nullptr;
}
inline Element*
Element::GetFlattenedTreeParentElementForStyle() const
{
nsINode* parentNode = GetFlattenedTreeParentNodeForStyle();
if MOZ_LIKELY(parentNode && parentNode->IsElement()) {
return parentNode->AsElement();
}
return nullptr;
}
inline void
Element::NoteDirtyDescendantsForServo()
{
if (!HasServoData()) {
// The dirty descendants bit only applies to styled elements.
return;
}
Element* curr = this;
while (curr && !curr->HasDirtyDescendantsForServo()) {
curr->SetHasDirtyDescendantsForServo();
curr = curr->GetFlattenedTreeParentElementForStyle();
}
if (nsIPresShell* shell = OwnerDoc()->GetShell()) {
shell->EnsureStyleFlush();
}
MOZ_ASSERT(DirtyDescendantsBitIsPropagatedForServo());
}
#ifdef DEBUG
inline bool
Element::DirtyDescendantsBitIsPropagatedForServo()
{
Element* curr = this;
while (curr) {
if (!curr->HasDirtyDescendantsForServo()) {
return false;
}
nsINode* parentNode = curr->GetParentNode();
curr = curr->GetFlattenedTreeParentElementForStyle();
MOZ_ASSERT_IF(!curr,
parentNode == OwnerDoc() ||
parentNode == parentNode->OwnerDoc()->GetRootElement());
}
return true;
}
#endif
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_ElementInlines_h