Files
react-native/ReactCommon/fabric/components/view/ViewShadowNode.cpp
David Aurelio 54af7fc645 YGStyle: wrap all fields into accessors
Summary:
@public

In order to encapsulate property access on `YGStyle`, as a first measure we wrap all fields with accessors.

This will e.g. enable dynamic property storage and instrumentation in the future.

All accessors have a `const` version that allows direct access via `const&`. For mutation, bit fields are wrapped with a custom reference object.

This style allows for the least amount of changes in client code. Property access simply needs appended parens, eg `style.direction` becomes `style.direction`.

Reviewed By: shergin

Differential Revision: D14999096

fbshipit-source-id: fbf29f7ddab520513d4618f5e70094c4f6330b30
2019-04-23 08:12:35 -07:00

36 lines
1.0 KiB
C++

/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#include "ViewShadowNode.h"
namespace facebook {
namespace react {
const char ViewComponentName[] = "View";
bool ViewShadowNode::isLayoutOnly() const {
const auto &viewProps = *std::static_pointer_cast<const ViewProps>(props_);
return viewProps.collapsable &&
// Event listeners
!viewProps.onLayout &&
// Generic Props
viewProps.nativeId.empty() &&
// Accessibility Props
!viewProps.accessible &&
// Style Props
viewProps.yogaStyle.overflow() == YGOverflowVisible &&
viewProps.opacity == 1.0 && !viewProps.backgroundColor &&
!viewProps.foregroundColor && !viewProps.shadowColor &&
viewProps.transform == Transform{} && viewProps.zIndex == 0 &&
// Layout Metrics
getLayoutMetrics().borderWidth == EdgeInsets{};
}
} // namespace react
} // namespace facebook