| // Copyright 2022 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "third_party/blink/renderer/core/css/layout_upgrade.h" |
| #include "third_party/blink/renderer/core/css/container_query_data.h" |
| #include "third_party/blink/renderer/core/css/style_engine.h" |
| #include "third_party/blink/renderer/core/dom/container_node.h" |
| #include "third_party/blink/renderer/core/dom/document.h" |
| #include "third_party/blink/renderer/core/dom/element.h" |
| #include "third_party/blink/renderer/core/dom/node_computed_style.h" |
| #include "third_party/blink/renderer/core/html/html_frame_owner_element.h" |
| |
| namespace blink { |
| |
| bool DocumentLayoutUpgrade::ShouldUpgrade() { |
| StyleEngine& style_engine = document_.GetStyleEngine(); |
| return style_engine.SkippedContainerRecalc() || |
| style_engine.StyleAffectedByLayout(); |
| } |
| |
| bool ParentLayoutUpgrade::ShouldUpgrade() { |
| StyleEngine& style_engine = document_.GetStyleEngine(); |
| return style_engine.HasViewportDependentMediaQueries() || |
| style_engine.HasViewportDependentPropertyRegistrations() || |
| ElementLayoutUpgrade(owner_).ShouldUpgrade(); |
| } |
| |
| bool ElementLayoutUpgrade::ShouldUpgrade() { |
| if (!element_.isConnected()) { |
| return false; |
| } |
| // We do not allow any elements to remain in a skipped state after a style |
| // update, therefore we always upgrade whenever we've skipped something, even |
| // if the current ancestors chain does not depend on layout. |
| StyleEngine& style_engine = element_.GetDocument().GetStyleEngine(); |
| if (style_engine.SkippedContainerRecalc()) { |
| return true; |
| } |
| |
| bool maybe_affected_by_layout = |
| style_engine.StyleMaybeAffectedByLayout(element_); |
| |
| if (!maybe_affected_by_layout) { |
| return false; |
| } |
| |
| // For pseudo-style requests, we may have to update pseudo-elements of the |
| // interleaving root itself. Hence we use inclusive ancestors here. |
| for (const Element* ancestor = &element_; ancestor; |
| ancestor = LayoutTreeBuilderTraversal::ParentElement(*ancestor)) { |
| if (ComputedStyle::IsInterleavingRoot(ancestor->GetComputedStyle())) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| } // namespace blink |