tor-browser

The Tor Browser
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DocumentInlines.h (2461B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 #ifndef mozilla_dom_DocumentInlines_h
      7 #define mozilla_dom_DocumentInlines_h
      8 
      9 #include "mozilla/PresShell.h"
     10 #include "mozilla/ServoStyleSet.h"
     11 #include "mozilla/dom/Document.h"
     12 #include "mozilla/dom/HTMLBodyElement.h"
     13 #include "nsContentUtils.h"
     14 #include "nsPresContext.h"
     15 #include "nsStyleSheetService.h"
     16 
     17 namespace mozilla::dom {
     18 
     19 inline PresShell* Document::GetObservingPresShell() const {
     20  return mPresShell && mPresShell->IsObservingDocument() ? mPresShell : nullptr;
     21 }
     22 
     23 inline nsPresContext* Document::GetPresContext() const {
     24  PresShell* presShell = GetPresShell();
     25  return presShell ? presShell->GetPresContext() : nullptr;
     26 }
     27 
     28 inline HTMLBodyElement* Document::GetBodyElement(
     29    const nsIContent* aContentToIgnore) const {
     30  return static_cast<HTMLBodyElement*>(
     31      GetHtmlChildElement(nsGkAtoms::body, aContentToIgnore));
     32 }
     33 
     34 inline void Document::SetServoRestyleRoot(nsINode* aRoot, uint32_t aDirtyBits) {
     35  MOZ_ASSERT(aRoot);
     36 
     37  MOZ_ASSERT(!mServoRestyleRoot || mServoRestyleRoot == aRoot ||
     38             nsContentUtils::ContentIsFlattenedTreeDescendantOfForStyle(
     39                 mServoRestyleRoot, aRoot));
     40  MOZ_ASSERT(aRoot == aRoot->OwnerDocAsNode() || aRoot->IsElement());
     41  mServoRestyleRoot = aRoot;
     42  SetServoRestyleRootDirtyBits(aDirtyBits);
     43 }
     44 
     45 // Note: we break this out of SetServoRestyleRoot so that callers can add
     46 // bits without doing a no-op assignment to the restyle root, which would
     47 // involve cycle-collected refcount traffic.
     48 inline void Document::SetServoRestyleRootDirtyBits(uint32_t aDirtyBits) {
     49  MOZ_ASSERT(aDirtyBits);
     50  MOZ_ASSERT((aDirtyBits & ~Element::kAllServoDescendantBits) == 0);
     51  MOZ_ASSERT((aDirtyBits & mServoRestyleRootDirtyBits) ==
     52             mServoRestyleRootDirtyBits);
     53  MOZ_ASSERT(mServoRestyleRoot);
     54  mServoRestyleRootDirtyBits = aDirtyBits;
     55 }
     56 
     57 inline ServoStyleSet& Document::EnsureStyleSet() const {
     58  MOZ_ASSERT(NS_IsMainThread());
     59  if (!mStyleSet) {
     60    Document* doc = const_cast<Document*>(this);
     61    doc->mStyleSet = MakeUnique<ServoStyleSet>(*doc);
     62  }
     63  return *(mStyleSet.get());
     64 }
     65 
     66 }  // namespace mozilla::dom
     67 
     68 #endif  // mozilla_dom_DocumentInlines_h