f2bc5d3fb2
Summary: Preparation for making components live editable Reviewed By: kevin0571 Differential Revision: D16379961 fbshipit-source-id: d0ea3d753eb588fe7b55f2345124427b4a5a58b5
115 lines
4.4 KiB
Plaintext
115 lines
4.4 KiB
Plaintext
/*
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* Copyright (c) 2018-present, Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the LICENSE
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* file in the root directory of this source tree.
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*
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*/
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#if FB_SONARKIT_ENABLED
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#import "SKComponentLayoutWrapper.h"
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#import <ComponentKit/CKAnalyticsListenerHelpers.h>
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#import <ComponentKit/CKComponent.h>
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#import <ComponentKit/CKComponentInternal.h>
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#import <ComponentKit/CKComponentRootView.h>
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#import <ComponentKit/CKComponentAttachController.h>
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#import <ComponentKit/CKComponentAttachControllerInternal.h>
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#import <ComponentKit/CKInspectableView.h>
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#import "CKComponent+Sonar.h"
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static char const kLayoutWrapperKey = ' ';
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static CKFlexboxComponentChild findFlexboxLayoutParams(CKComponent *parent, CKComponent *child) {
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if ([parent isKindOfClass:[CKFlexboxComponent class]]) {
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static Ivar ivar = class_getInstanceVariable([CKFlexboxComponent class], "_children");
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static ptrdiff_t offset = ivar_getOffset(ivar);
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unsigned char *pComponent = (unsigned char*)(__bridge void*)parent;
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auto children = (std::vector<CKFlexboxComponentChild> *)(pComponent + offset);
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if (children) {
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for (auto it = children->begin(); it != children->end(); it++) {
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if (it->component == child) {
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return *it;
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}
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}
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}
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}
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return {};
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}
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@implementation SKComponentLayoutWrapper
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+ (instancetype)newFromRoot:(id<CKInspectableView>)root {
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const CKComponentLayout layout = [root mountedLayout];
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// Check if there is a cached wrapper.
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if (layout.component) {
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SKComponentLayoutWrapper *cachedWrapper = objc_getAssociatedObject(layout.component, &kLayoutWrapperKey);
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if (cachedWrapper) {
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return cachedWrapper;
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}
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}
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CKComponentReuseWrapper *reuseWrapper = CKAnalyticsListenerHelpers::GetReusedNodes(layout.component);
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// Create a new layout wrapper.
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SKComponentLayoutWrapper *const wrapper =
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[[SKComponentLayoutWrapper alloc] initWithLayout:layout
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position:CGPointMake(0, 0)
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parentKey:[NSString stringWithFormat: @"%d.", layout.component.treeNode.nodeIdentifier]
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reuseWrapper:reuseWrapper
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rootNode: root];
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// Cache the result.
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if (layout.component) {
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objc_setAssociatedObject(layout.component, &kLayoutWrapperKey, wrapper, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
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}
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return wrapper;
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}
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- (instancetype)initWithLayout:(const CKComponentLayout &)layout
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position:(CGPoint)position
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parentKey:(NSString *)parentKey
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reuseWrapper:(CKComponentReuseWrapper *)reuseWrapper
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rootNode:(id<CKInspectableView>)node
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{
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if (self = [super init]) {
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_rootNode = node;
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_component = layout.component;
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_size = layout.size;
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_position = position;
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_identifier = [parentKey stringByAppendingString:layout.component ? NSStringFromClass([layout.component class]) : @"(null)"];
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if (_component && reuseWrapper) {
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auto const canBeReusedCounter = [reuseWrapper canBeReusedCounter:_component.treeNode.nodeIdentifier];
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if (canBeReusedCounter > 0) {
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_component.flipper_canBeReusedCounter = canBeReusedCounter;
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}
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}
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if (layout.children != nullptr) {
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int index = 0;
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for (const auto &child : *layout.children) {
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if (child.layout.component == nil) {
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continue; // nil children are allowed, ignore them
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}
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SKComponentLayoutWrapper *childWrapper = [[SKComponentLayoutWrapper alloc] initWithLayout:child.layout
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position:child.position
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parentKey:[_identifier stringByAppendingFormat:@"[%d].", index++]
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reuseWrapper:reuseWrapper
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rootNode:node
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];
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childWrapper->_isFlexboxChild = [_component isKindOfClass:[CKFlexboxComponent class]];
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childWrapper->_flexboxChild = findFlexboxLayoutParams(_component, child.layout.component);
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_children.push_back(childWrapper);
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}
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}
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}
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return self;
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}
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@end
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#endif
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