| /* |
| * Copyright (C) 2013 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "third_party/blink/renderer/core/layout/subtree_layout_scope.h" |
| |
| #include "third_party/blink/renderer/core/display_lock/display_lock_utilities.h" |
| #include "third_party/blink/renderer/core/frame/local_frame_view.h" |
| #include "third_party/blink/renderer/core/layout/layout_object.h" |
| |
| namespace blink { |
| |
| SubtreeLayoutScope::SubtreeLayoutScope(LayoutObject& root) : root_(root) { |
| CHECK(root_.GetDocument().View()->IsInPerformLayout()); |
| } |
| |
| SubtreeLayoutScope::~SubtreeLayoutScope() { |
| CHECK(!root_.SelfNeedsLayout() || |
| root_.LayoutBlockedByDisplayLock(DisplayLockLifecycleTarget::kSelf)); |
| CHECK(!root_.NeedsLayout() || root_.LayoutBlockedByDisplayLock( |
| DisplayLockLifecycleTarget::kChildren)); |
| |
| #if DCHECK_IS_ON() |
| for (auto* layout_object : layout_objects_to_layout_) { |
| // There are situations where the object to layout was never laid out, such |
| // as if there was a display-locked descendant of the root and ancestor of |
| // the object which prevented layout. This can happen in quirks mode, where |
| // an ancestor can mark a descendant as dirty through its |
| // PercentHeightDescendants() list, which will not get cleared because |
| // traversal is blocked by a display lock. This finds such cases and allows |
| // these objects to be dirty. |
| if (!DisplayLockUtilities::LockedAncestorPreventingLayout(*layout_object)) |
| layout_object->AssertLaidOut(); |
| } |
| #endif |
| } |
| |
| void SubtreeLayoutScope::SetNeedsLayout( |
| LayoutObject* descendant, |
| LayoutInvalidationReasonForTracing reason) { |
| DCHECK(descendant->IsDescendantOf(&root_)); |
| descendant->SetNeedsLayout(reason, kMarkContainerChain, this); |
| } |
| |
| void SubtreeLayoutScope::SetChildNeedsLayout(LayoutObject* descendant) { |
| DCHECK(descendant->IsDescendantOf(&root_)); |
| descendant->SetChildNeedsLayout(kMarkContainerChain, this); |
| } |
| |
| void SubtreeLayoutScope::RecordObjectMarkedForLayout( |
| LayoutObject* layout_object) { |
| #if DCHECK_IS_ON() |
| layout_objects_to_layout_.insert(layout_object); |
| #endif |
| } |
| |
| } // namespace blink |