so://phie

blob: 4783f1ad4fe1cad8f80dc5bdb559f3938a0862cc (4331 bytes)[doc][blame][raw]

  1const parser = new DOMParser();
  2let count = 1000;
  3let create = null;
  4
  5const segment = ({createElement}) => {
  6  create = createElement;
  7}
  8
  9const html = (strings, ...props) => {
 10  const elements = parse(strings, ...props);
 11  if(elements.length === 0) {
 12    throw 'No DOM element was returned!';
 13  }
 14  if(elements.length > 1) {
 15    console.warn('Only one DOM element can be returned!');
 16  }
 17  return elements[0];
 18}
 19
 20const parse = (strings, ...props) => {
 21  const [html, refs] = compose(strings, props);
 22  let dom;
 23  try {
 24    dom = parser.parseFromString(html, 'text/html');
 25  }
 26  catch(error) {
 27    console.error(error);
 28    throw 'Invalid DOM structure!';
 29  }
 30  const nodes = [...dom.head.childNodes, ...dom.body.childNodes];
 31  return nodes.map((node) => render(node, refs));
 32}
 33
 34/**
 35 * Joins the template literal strings together and replaces the properties with references.
 36 * The properties are being mapped to there corresponding references and with the populated
 37 * HTML string returned.
 38 *
 39 * @param {string[]} strings - The template literal strings
 40 * @param {any[]} props - The template literal properties
 41 * @return {any[]} The joined HTML string and the properties mapped to there references.
 42 */
 43const compose = (strings, props) => {
 44  if(strings === undefined) {
 45    // handles dyn function without body
 46    return ['', {}];
 47  }
 48  const refs = {};
 49  let string = '';
 50  for(let i = 0; i < strings.length; i++) {
 51    string += strings[i];
 52    if(props[i] !== undefined) {
 53      const uid = `$seg-${count++}`;
 54      refs[uid] = props[i];
 55      string += uid ?? '';
 56    }
 57  }
 58  return [string.trim(), refs];
 59}
 60
 61/**
 62 * Injects the properties into the corresponding reference locations of the string.
 63 *
 64 * @param {string} string - The string containing references
 65 * @param {any[]} refs - The properties mapped to there references
 66 * @return {any[]} The string populate with the passed properties
 67 */
 68const feed = (string, refs) => {
 69  const expr = /\$seg-\d+/g;
 70  let values = [];
 71  let match = null;
 72  let last = 0;
 73  while((match = expr.exec(string)) !== null) {
 74    const index = match.index;
 75    const uid = match[0];
 76    values.push(string.substring(last, index));
 77    let value = refs[uid];
 78    if(value instanceof Function) {
 79      value = value();
 80    }
 81    values.push(value);
 82    last = index + uid.length;
 83  }
 84  values.push(string.substring(last));
 85  return values;
 86}
 87
 88const dyn = (element, props) => {
 89  return (strings, ...childProps) => {
 90    return create(element, props, ...parse(strings, ...childProps));
 91  };
 92}
 93
 94const render = (node, refs) => {
 95  if(node.nodeType === Node.TEXT_NODE) {
 96    return feed(node.textContent, refs);
 97  }
 98  if(node.nodeType === Node.COMMENT_NODE) {
 99    return [];
100  }
101  const tag = node.tagName;
102  const attributes = {};
103  for(const attribute of node.attributes) {
104    const key = attribute.name;
105    const value = attribute.textContent;
106    let isDynamic = false;
107    for(const ref in refs) {
108      if(value === ref) {
109        let match = null;
110        if((match = /^@(\w+)$/.exec(key)) !== null) {
111          const event = match[1];
112          attributes[`on${event.substring(0, 1).toUpperCase()}${event.substring(1)}`] = refs[ref];
113        }
114        else {
115          attributes[key] = refs[ref];
116        }
117        isDynamic = true;
118        break;
119      }
120    }
121    if(!isDynamic) {
122      if(key === 'style') {
123        const styles = {};
124        for(const item of value.split(';')) {
125          if(item.trim().length === 0) {
126            break;
127          }
128          let [key, value] = item.split(':');
129          key = key.trim();
130          let match = null;
131          if((match = /-(\w)/.exec(key)) !== null) {
132            const char = match[1];
133            key = key.replace(`-${char}`, char.toUpperCase());
134          }
135          value = value.trim();
136          styles[key] = feed(value, refs).join('');
137        }
138        attributes[key] = styles;
139      }
140      else {
141        attributes[key] = feed(value, refs).join('');
142      }
143    }
144  }
145  const children = [];
146  (node.childNodes ?? []).forEach((child) => children.push(...render(child, refs)));
147  return [create(tag, attributes, ...children)];
148}
149
150import {defCss, defStyle} from './mods.js';
151
152const css = defCss({html, compose, feed});
153const style = defStyle({html, compose, feed});
154
155export { segment, html, dyn, css, style };