85 lines
1.8 KiB
JavaScript
85 lines
1.8 KiB
JavaScript
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const merge = require('merge-options');
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const processor = require('posthtml-svg-mode');
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const extractNamespacesToRoot = require('./transformations/extract-namespaces-to-root');
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const moveFromSymbolToRoot = require('./transformations/move-from-symbol-to-root');
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const { svg, xlink } = require('../namespaces');
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const defaultConfig = {
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attrs: {
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[svg.name]: svg.uri,
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[xlink.name]: xlink.uri
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},
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styles: `
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.sprite-symbol-usage {display: none;}
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.sprite-symbol-usage:target {display: inline;}
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`,
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usages: true,
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symbols: []
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};
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/**
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* TODO simplify
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* @param {Object} [config] {@see defaultConfig}
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* @return {Function} PostHTML plugin
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*/
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function createSprite(config = {}) {
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const cfg = merge(defaultConfig, config);
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const symbols = cfg.symbols;
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const trees = symbols.map(s => s.tree);
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let usages = [];
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if (cfg.usages) {
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usages = symbols.map((symbol) => {
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const { id, useId } = symbol;
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return {
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tag: 'use',
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attrs: {
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id: useId,
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'xlink:href': `#${id}`,
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class: 'sprite-symbol-usage'
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}
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};
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});
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}
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let defsContent = [];
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if (cfg.styles !== false) {
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defsContent.push({
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tag: 'style',
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content: cfg.styles
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});
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}
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defsContent = defsContent.concat(trees);
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return (tree) => {
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tree[0] = {
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tag: 'svg',
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attrs: cfg.attrs,
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content: [{
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tag: 'defs',
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content: defsContent
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}].concat(usages)
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};
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return tree;
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};
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}
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/**
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* @param {Object} options {@see defaultConfig}
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* @return {Promise<PostHTMLProcessingResult>}
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*/
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function spriteFactory(options) {
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const plugins = [
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createSprite(options),
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extractNamespacesToRoot(),
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moveFromSymbolToRoot()
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];
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return processor(plugins).process('');
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}
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module.exports = spriteFactory;
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module.exports.createSprite = createSprite;
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