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58 lines
2.5 KiB
C++
58 lines
2.5 KiB
C++
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/**
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* Copyright (c) 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
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* LICENSE file in the root directory of this source tree.
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*/
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#include "TemplateRenderer.h"
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#include <glog/logging.h>
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#include <fabric/components/view/ViewComponentDescriptor.h>
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#include <fabric/components/view/ViewProps.h>
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#include <fabric/components/view/ViewShadowNode.h>
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#include <fabric/core/componentDescriptor.h>
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#include <fabric/core/LayoutContext.h>
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#include <fabric/core/ShadowNodeFragment.h>
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#include <fabric/debug/DebugStringConvertible.h>
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#include <fabric/debug/DebugStringConvertibleItem.h>
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#include <folly/json.h>
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namespace facebook {
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namespace react {
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SharedShadowNode TemplateRenderer::buildShadowTree(const std::string &jsonStr, int rootTag, const folly::dynamic ¶ms, const ComponentDescriptorRegistry &componentDescriptorRegistry) {
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LOG(INFO) << "(strt) TemplateRenderer inject hardcoded 'server rendered' view tree";
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std::string content = jsonStr;
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for (const auto& param : params.items()) {
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const auto& key = param.first.asString();
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size_t start_pos = content.find(key);
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if(start_pos != std::string::npos) {
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content.replace(start_pos, key.length(), param.second.asString());
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}
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}
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auto json = folly::parseJson(content);
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std::vector<SharedShadowNode> nodes;
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nodes.resize(json.size() * 2);
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int tagOffset = 4560; // MAYBE TODO: use number of existing tags so they don't collide rather than random value
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for (const auto& command : json) {
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if (command[0] == "createNode") {
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int tag = command[1].asInt();
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const auto& type = command[2].asString();
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const auto& props = command[3];
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nodes[tag] = componentDescriptorRegistry.createNode(tag + tagOffset, type, rootTag, props, nullptr);
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} else if (command[0] == "appendChild") {
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auto parentShadowNode = nodes[command[1].asInt()];
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const SharedComponentDescriptor &componentDescriptor = componentDescriptorRegistry[parentShadowNode];
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componentDescriptor->appendChild(parentShadowNode, nodes[command[2].asInt()]);
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} else if (command[0] == "childSetNode") {
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LOG(INFO) << "(stop) TemplateView inject serialized 'server rendered' view tree";
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return nodes[command[1].asInt()];
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}
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}
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throw std::runtime_error("Missing childSetNode command in template content:\n" + content);
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return SharedShadowNode {};
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}
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}
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}
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