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/* Set up done marks for steps */
nodeListToArray(document.querySelectorAll('.g-Recipe__Content ol > li')).forEach(todo => {
todo.onclick = e => {
toggleClassName(todo, 'g-Recipe__Completed')
e.stopPropagation()
}
})
function toggleClassName(node: Element, className: string) {
if (node.className === className) {
node.className = ''
} else {
node.className = className
}
}
/* Set up inputs for the ingredients */
const itemEntries =
nodeListToArray(document.querySelectorAll('.g-Recipe__Content ul > li'))
.map(itemNode => ({ tag: 'li', node: itemNode }))
const h1 = document.querySelector<HTMLElement>('.g-Recipe__Content h1')
if (h1 !== null) {
itemEntries.push(
{ tag: 'h1'
, node: h1
}
)
}
const inputs = setInputs(itemEntries)
inputs.map(input => {
input.node.oninput = e => {
if (e.target !==null) {
const parsed: ParsedNumber | undefined = parseNumber((e.target as HTMLInputElement).value)
if (parsed !== undefined && parsed.before === '' && parsed.after === '') {
const factor = parsed.number / input.number
inputs.map(input2 => input2.node.value = prettyPrintNumber(input2.number * factor))
}
}
}
})
interface InputEntry {
tag: string;
node: HTMLElement;
}
interface InputResult {
number: number,
node: HTMLInputElement
}
function setInputs(xs: InputEntry[]): InputResult[] {
const res: InputResult[] = []
xs.forEach(x => {
const parsed = parseNumber(x.node.innerText)
if (parsed !== undefined) {
const numberElement = createNumberElement(x.tag, parsed)
const parentNode = x.node.parentNode
if (parentNode) {
parentNode.replaceChild(numberElement.node, x.node)
res.push({
number: parsed.number,
node: numberElement.number
})
}
}
})
return res
}
interface NumberElement {
node: Element;
number: HTMLInputElement;
}
function createNumberElement(tag: string, parsedNumber: ParsedNumber): NumberElement {
const numberElement = h(
'input',
{
'class': 'g-Number',
'value': prettyPrintNumber(parsedNumber.number)
}
) as HTMLInputElement
return {
node: h(tag, {}, [parsedNumber.before, numberElement, parsedNumber.after]),
number: numberElement,
}
}
interface ParsedNumber {
before: string;
number: number;
after: string;
}
function parseNumber(str: string): ParsedNumber | undefined {
let start;
for (start = 0; start < str.length; start++) {
if (isDigit(str.charAt(start))) {
break
}
}
if (start === str.length) {
return undefined
}
// Integer part
let integerPart = '';
let end = start;
for (; end < str.length; end++) {
const c = str.charAt(end)
if (!isDigit(c)) {
break
} else {
integerPart += c
}
}
// Decimal sign
if (end < str.length && (str.charAt(end) === '.' || str.charAt(end) === ',')) {
end++
}
// Decimal part
let decimalPart = '';
for (; end < str.length; end++) {
const c = str.charAt(end)
if (!isDigit(c)) {
break
} else {
decimalPart += c
}
}
return {
before: str.substring(0, start),
number: parseFloat(integerPart + (decimalPart !== '' ? '.' + decimalPart : '')),
after: str.substring(end, str.length)
}
}
function isDigit(c: string) {
return c >= '0' && c <= '9'
}
function nodeListToArray(nodeList: NodeListOf<HTMLElement>): HTMLElement[] {
const xs: HTMLElement[] = [];
nodeList.forEach(node => xs.push(node))
return xs
}
function prettyPrintNumber(n: number): string {
const xs = n.toString().split('.')
if (xs.length == 2) {
return xs[0] + ',' + xs[1].substring(0, 2)
} else {
return xs[0]
}
}
/* Element creation helper */
type Attribute = string | boolean | ((e: Event) => void)
type Child = Element | string
function h(tag: string, attrs: {[key: string]: Attribute}, children: Array<Child> = []): Element {
let element = document.createElement(tag)
for (let name in attrs) {
let value = attrs[name]
if (typeof value === 'boolean') {
if (value) {
element.setAttribute(name, name)
}
} else if (typeof value === 'function') {
(element as any)[name] = (e: Event) => {
if (e.target !== null) {
console.log((e.target as HTMLInputElement).value)
}
}
} else {
element.setAttribute(name, value)
}
}
children.forEach(child => {
if (typeof child === 'string') {
element.appendChild(document.createTextNode(child))
} else {
element.appendChild(child)
}
})
return element
}
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