chromium/third_party/blink/renderer/core/paint/find_properties_needing_update.h

// 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.

#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_FIND_PROPERTIES_NEEDING_UPDATE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_FIND_PROPERTIES_NEEDING_UPDATE_H_

#include "base/dcheck_is_on.h"

#if DCHECK_IS_ON()

#include "base/check_op.h"
#include "third_party/blink/renderer/core/layout/layout_object.h"
#include "third_party/blink/renderer/core/paint/object_paint_properties.h"
#include "third_party/blink/renderer/core/paint/paint_property_tree_builder.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"

namespace blink {

// This file contains a scope class for catching cases where paint properties
// needed an update but were not marked as such. If paint properties will
// change, the object must be marked as needing a paint property update
// using LayoutObject::SetNeedsPaintPropertyUpdate() or by forcing a subtree
// update (see: PaintPropertyTreeBuilderContext::force_subtree_update).
//
// This scope class works by marking the paint property state as immutable
// before rebuilding properties, forcing the properties to get updated, which
// causes object paint properties to DCHECK that property values are not
// changed.

class FindPropertiesNeedingUpdateScope { … };

}  // namespace blink
#endif  // DCHECK_IS_ON()

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_FIND_PROPERTIES_NEEDING_UPDATE_H_