chromium/third_party/blink/renderer/core/page/scrolling/root_scroller_controller.cc

// Copyright 2016 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/page/scrolling/root_scroller_controller.h"

#include "third_party/blink/renderer/core/css/style_change_reason.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/frame/browser_controls.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/frame/local_frame_view.h"
#include "third_party/blink/renderer/core/frame/visual_viewport.h"
#include "third_party/blink/renderer/core/fullscreen/document_fullscreen.h"
#include "third_party/blink/renderer/core/html/html_frame_owner_element.h"
#include "third_party/blink/renderer/core/layout/layout_box.h"
#include "third_party/blink/renderer/core/layout/layout_embedded_content.h"
#include "third_party/blink/renderer/core/layout/layout_view.h"
#include "third_party/blink/renderer/core/page/chrome_client.h"
#include "third_party/blink/renderer/core/page/page.h"
#include "third_party/blink/renderer/core/page/scrolling/top_document_root_scroller_controller.h"
#include "third_party/blink/renderer/core/paint/paint_layer.h"
#include "third_party/blink/renderer/core/paint/paint_layer_scrollable_area.h"
#include "third_party/blink/renderer/core/scroll/scrollable_area.h"
#include "third_party/blink/renderer/platform/instrumentation/tracing/trace_event.h"
#include "third_party/blink/renderer/platform/instrumentation/use_counter.h"
#include "ui/gfx/geometry/rect_conversions.h"
#include "ui/gfx/geometry/size_conversions.h"

namespace blink {

class RootFrameViewport;

namespace {

bool FillsViewport(const Element& element) { … }

// If the element is an iframe this grabs the ScrollableArea for the owned
// LayoutView.
PaintLayerScrollableArea* GetScrollableArea(const Element& element) { … }

}  // namespace

RootScrollerController::RootScrollerController(Document& document)
    : … { … }

void RootScrollerController::Trace(Visitor* visitor) const { … }

Node& RootScrollerController::EffectiveRootScroller() const { … }

void RootScrollerController::DidResizeFrameView() { … }

void RootScrollerController::DidUpdateIFrameFrameView(
    HTMLFrameOwnerElement& element) { … }

bool RootScrollerController::RecomputeEffectiveRootScroller() { … }

bool RootScrollerController::IsValidRootScroller(const Element& element) const { … }

bool RootScrollerController::IsValidImplicitCandidate(
    const Element& element) const { … }

bool RootScrollerController::IsValidImplicit(const Element& element) const { … }

void RootScrollerController::ApplyRootScrollerProperties(Node& node) { … }

void RootScrollerController::UpdateIFrameGeometryAndLayoutSize(
    HTMLFrameOwnerElement& frame_owner) const { … }

Element* RootScrollerController::ImplicitRootScrollerFromCandidates() { … }

void RootScrollerController::ElementRemoved(const Element& element) { … }

void RootScrollerController::ConsiderForImplicit(Node& node) { … }

template <typename Function>
void RootScrollerController::ForAllNonThrottledLocalControllers(
    const Function& function) { … }

bool RootScrollerController::PerformRootScrollerSelection() { … }

}  // namespace blink