wekan/docs/ImportExport/trello2wekan/pretty-json-custom-element-js.txt
2025-07-04 04:08:41 +03:00

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Text

// @ts-check
/**
* @typedef {string | number | null | undefined | bigint | boolean | symbol} Primitive
* @typedef {(...args: any[]) => any} AnyFunction
*/
class PrettyJSONError extends Error {
/**
*
* @param {string} message
*/
constructor(message) {
super(message);
this.name = "PrettyJSONError";
}
}
class PrettyJSON extends HTMLElement {
/**
* @type {any}
*/
#input;
/**
* @type {boolean}
*/
#isExpanded;
static get observedAttributes() {
return ["expand", "key", "truncate-string"];
}
static styles = `/* css */
:host {
--key-color: #cc0000;
--arrow-color: #737373;
--brace-color: #0030f0;
--bracket-color: #0030f0;
--string-color: #009900;
--number-color: #0000ff;
--null-color: #666666;
--boolean-color: #d23c91;
--comma-color: #666666;
--ellipsis-color: #666666;
--indent: 2rem;
}
@media (prefers-color-scheme: dark) {
:host {
--key-color: #f73d3d;
--arrow-color: #6c6c6c;
--brace-color: #0690bc;
--bracket-color: #0690bc;
--string-color: #21c521;
--number-color: #0078b3;
--null-color: #8c8888;
--boolean-color: #c737b3;
--comma-color: #848181;
--ellipsis-color: #c2c2c2;
}
}
button {
border: none;
background: transparent;
cursor: pointer;
font-family: inherit;
font-size: 1rem;
vertical-align: text-bottom;
}
.container {
font-family: monospace;
font-size: 1rem;
}
.key {
color: var(--key-color);
margin-right: 0.5rem;
padding: 0;
}
.key .arrow {
width: 1rem;
height: 0.75rem;
margin-left: -1.25rem;
padding-right: 0.25rem;
vertical-align: baseline;
}
.arrow .triangle {
fill: var(--arrow-color);
}
.comma {
color: var(--comma-color);
}
.brace {
color: var(--brace-color);
}
.string,
.url {
color: var(--string-color);
}
.number,
.bigint {
color: var(--number-color);
}
.null {
color: var(--null-color);
}
.boolean {
color: var(--boolean-color);
}
.ellipsis {
width: 1rem;
padding: 0;
color: var(--ellipsis-color);
}
.ellipsis::after {
content: "…";
}
.string .ellipsis::after {
color: var(--string-color);
}
.triangle {
fill: black;
stroke: black;
stroke-width: 0;
}
.row {
padding-left: var(--indent);
}
.row .row {
display: block;
}
.row > div,
.row > span {
display: inline-block;
}
`;
constructor() {
super();
this.#isExpanded = true;
this.attachShadow({ mode: "open" });
}
get #expandAttributeValue() {
const expandAttribute = this.getAttribute("expand");
if (expandAttribute === null) {
return 1;
}
const expandValue = Number.parseInt(expandAttribute);
return isNaN(expandValue) || expandValue < 0 ? 0 : expandValue;
}
get #truncateStringAttributeValue() {
const DEFAULT_TRUNCATE_STRING = 500;
const truncateStringAttribute = this.getAttribute("truncate-string");
if (truncateStringAttribute === null) {
return DEFAULT_TRUNCATE_STRING;
}
const truncateStringValue = Number.parseInt(truncateStringAttribute);
return isNaN(truncateStringValue) || truncateStringValue < 0
? 0
: truncateStringValue;
}
#toggle() {
this.#isExpanded = !this.#isExpanded;
this.setAttribute(
"expand",
this.#isExpanded ? String(this.#expandAttributeValue + 1) : "0"
);
this.#render();
}
/**
* @param {Record<any, any> | any[] | Primitive | AnyFunction} input
* @param {number} expand
* @param {string} [key]
* @returns {HTMLElement}
*/
#createChild(input, expand, key) {
if (this.#isPrimitiveValue(input)) {
const container = this.#createContainer();
container.appendChild(this.#createPrimitiveValueElement(input));
return container;
}
return this.#createObjectOrArray(input);
}
/**
* @param {any} input
* @returns {input is Primitive}
*/
#isPrimitiveValue(input) {
return typeof input !== "object" || input === null;
}
#isValidStringURL() {
try {
new URL(this.#input);
return true;
} catch (error) {
return false;
}
}
/**
* @param {Primitive} input
* @returns {HTMLElement}
*/
#createPrimitiveValueElement(input) {
const container = document.createElement("div");
const type = typeof input === "object" ? "null" : typeof input;
container.className = `primitive value ${type}`;
if (typeof input === "string") {
if (this.#isValidStringURL()) {
const anchor = document.createElement("a");
anchor.className = "url";
anchor.href = this.#input;
anchor.target = "_blank";
anchor.textContent = input;
container.append('"', anchor, '"');
} else if (input.length > this.#truncateStringAttributeValue) {
container.appendChild(this.#createTruncatedStringElement(input));
} else {
container.textContent = JSON.stringify(input);
}
} else {
container.textContent = JSON.stringify(input);
}
return container;
}
/**
* @param {string} input
*/
#createTruncatedStringElement(input) {
const container = document.createElement("div");
container.dataset.expandedTimes = "1";
container.className = "truncated string";
const ellipsis = document.createElement("button");
ellipsis.className = "ellipsis";
ellipsis.addEventListener("click", () => {
const expandedTimes = Number.parseInt(
container.dataset.expandedTimes ?? "1"
);
container.dataset.expandedTimes = String(expandedTimes + 1);
const expandedString = input.slice(
0,
(expandedTimes + 1) * this.#truncateStringAttributeValue
);
const textChild = container.childNodes[1];
container.replaceChild(
document.createTextNode(expandedString),
textChild
);
});
container.append(
'"',
input.slice(0, this.#truncateStringAttributeValue),
ellipsis,
'"'
);
return container;
}
/**
* @returns {HTMLElement}
*/
#createContainer() {
const container = document.createElement("div");
container.className = "container";
return container;
}
/**
* @param {Record<any, any> | any[]} object
* @returns {HTMLElement}
*/
#createObjectOrArray(object) {
const isArray = Array.isArray(object);
const objectKeyName = this.getAttribute("key");
const expand = this.#expandAttributeValue;
const container = this.#createContainer();
container.classList.add(isArray ? "array" : "object");
if (objectKeyName) {
// if objectKeyName is provided, then it is a row
container.classList.add("row");
const keyElement = this.#createKeyElement(objectKeyName, {
withArrow: true,
expanded: this.#isExpanded,
});
keyElement.addEventListener("click", this.#toggle.bind(this));
container.appendChild(keyElement);
}
const openingBrace = document.createElement("span");
openingBrace.className = "open brace";
openingBrace.textContent = isArray ? "[" : "{";
container.appendChild(openingBrace);
const closingBrace = document.createElement("span");
closingBrace.className = "close brace";
closingBrace.textContent = isArray ? "]" : "}";
if (!this.#isExpanded) {
const ellipsis = document.createElement("button");
ellipsis.className = "ellipsis";
container.appendChild(ellipsis);
ellipsis.addEventListener("click", this.#toggle.bind(this));
container.appendChild(closingBrace);
return container;
}
Object.entries(object).forEach(([key, value], index) => {
// for primitives we make a row here
if (this.#isPrimitiveValue(value)) {
const rowContainer = document.createElement("div");
rowContainer.className = "row";
if (!isArray) {
const keyElement = this.#createKeyElement(key);
rowContainer.appendChild(keyElement);
}
rowContainer.appendChild(this.#createPrimitiveValueElement(value));
container.appendChild(rowContainer);
const isLast = index === Object.keys(object).length - 1;
if (!isLast) {
const comma = document.createElement("span");
comma.className = "comma";
comma.textContent = ",";
rowContainer.appendChild(comma);
}
return;
}
// for objects and arrays we make a "container row"
const prettyJsonElement = document.createElement("pretty-json");
prettyJsonElement.textContent = JSON.stringify(value);
prettyJsonElement.setAttribute("expand", String(expand - 1));
prettyJsonElement.setAttribute("key", key);
container.appendChild(prettyJsonElement);
});
container.appendChild(closingBrace);
return container;
}
/**
* @param {{ expanded?: boolean }} [options]
* @returns {SVGElement}
*/
#createArrowElement({ expanded = false } = {}) {
const svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
svg.setAttribute("width", "100");
svg.setAttribute("height", "100");
svg.setAttribute("viewBox", "0 0 100 100");
svg.setAttribute("class", "arrow");
const polygon = document.createElementNS(
"http://www.w3.org/2000/svg",
"polygon"
);
polygon.setAttribute("class", "triangle");
polygon.setAttribute("points", "0,0 100,50 0,100");
if (expanded) {
polygon.setAttribute("transform", "rotate(90 50 50)");
}
svg.appendChild(polygon);
return svg;
}
/**
* @param {string} key
* @param {{ withArrow?: boolean, expanded?: boolean }} [options]
* @returns {HTMLElement}
*/
#createKeyElement(key, { withArrow = false, expanded = false } = {}) {
const keyElement = document.createElement(withArrow ? "button" : "span");
keyElement.className = "key";
if (withArrow) {
const arrow = this.#createArrowElement({ expanded });
keyElement.appendChild(arrow);
}
const keyName = document.createElement("span");
keyName.className = "key-name";
keyName.textContent = JSON.stringify(key);
keyElement.appendChild(keyName);
const colon = document.createElement("span");
colon.className = "colon";
colon.textContent = ":";
keyElement.appendChild(colon);
return keyElement;
}
#render() {
if (!this.shadowRoot) {
throw new PrettyJSONError("Shadow root not available");
}
this.shadowRoot.innerHTML = "";
this.shadowRoot.appendChild(
this.#createChild(this.#input, this.#expandAttributeValue)
);
if (this.shadowRoot.querySelector("[data-pretty-json]")) {
return;
}
const styles = document.createElement("style");
styles.setAttribute("data-pretty-json", "");
styles.textContent = PrettyJSON.styles;
this.shadowRoot.appendChild(styles);
}
/**
* Handle when attributes change
* @param {string} name
* @param {string} _oldValue
* @param {string | null} newValue
*/
attributeChangedCallback(name, _oldValue, newValue) {
if (name === "expand") {
if (newValue === null) {
this.#isExpanded = false;
} else {
const expandValue = Number.parseInt(newValue);
this.#isExpanded = !isNaN(expandValue) && expandValue > 0;
}
this.#render();
}
}
connectedCallback() {
try {
this.#input = JSON.parse(this.textContent ?? "");
} catch (jsonParseError) {
const message = `Error parsing JSON: ${jsonParseError instanceof Error ? jsonParseError.message : "Unknown error"}`;
throw new PrettyJSONError(message);
}
this.#render();
}
}
// Define pretty-json custom element
customElements.define("pretty-json", PrettyJSON);