34 lines
2.7 KiB
JavaScript
34 lines
2.7 KiB
JavaScript
/**
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* 应用编译期的ReactFlow可见性扩展。为视口外但仍有焦点/手势/浮层的显式保留对象扩展原生可见集合。
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* 只转换匹配到的编译输入字符串，不修改共享node_modules文件，也不进入独立headless SDK的运行逻辑。
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*/
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// App-only extension for the pinned @xyflow/react 12.12.1 ESM renderer. This
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// transforms compiler input; shared node_modules and the headless SDK are untouched.
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// 读取安装包版本，固定12.12.1；库升级必须人工审查目标实现，不能凭相同函数名继续替换。
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const version = require('@xyflow/react/package.json').version;
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/** webpack/Turbopack loader接收源码并返回改写后的源码；任何版本或锚点不符立即失败，防止悄悄失去保留能力。 */
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module.exports = function retainVisibility(source) {
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if (version !== '12.12.1') throw new Error('Review xyflow retained visibility before upgrading @xyflow/react');
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// 四个精确源码锚点覆盖节点查询、边可见性及选择订阅；依赖上游编译格式，不是通用AST补丁。
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const nodes = 'getNodesInside(s.nodeLookup, { x: 0, y: 0, width: s.width, height: s.height }, s.transform, true).map((node) => node.id)';
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const edges = 'isEdgeVisible({\n sourceNode,';
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const selection = 'const changeSelector = (s) => !!s.onSelectionChangeHandlers;';
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const close = 'transform: s.transform,\n })) {';
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// 每个锚点只能出现一次，并拒绝重复处理已含标记的输入；避免替换错位置或把运算括号重复扩展。
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if (source.includes('__endoleapRetain') || source.split(nodes).length !== 2 || source.split(edges).length !== 2 || source.split(close).length !== 2 || source.split(selection).length !== 2) {
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throw new Error('Unsupported xyflow visibility implementation; retained editors must not silently lose virtualization');
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}
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// 节点追加未hidden且显式保留的ID并Set去重；边以保留标记或原可见判断二选一，维持原生索引。
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// 最后一处改为空数组不订阅完整选择集合，减少无选择监听时的不必要全图selector工作。
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return source
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.replace(nodes, `Array.from(new Set([
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...${nodes},
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...s.nodes.filter((node) => node.__endoleapRetain === true && !node.hidden).map((node) => node.id),
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]))`)
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.replace(edges, '(edge.__endoleapRetain === true || isEdgeVisible({\n sourceNode,')
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.replace(close, 'transform: s.transform,\n }))) {')
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// An empty handler array is truthy; do not mount the full-graph selector
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// when neither the prop nor a useOnSelectionChange subscriber needs it.
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.replace(selection, 'const changeSelector = (s) => !!s.onSelectionChangeHandlers?.length;');
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};
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