mirror of https://github.com/sveltejs/svelte
paoloricciuti
5 months ago
parent
be398671ca
commit
b043b28d45
@ -0,0 +1,145 @@
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const ELEMENT_NODE_TYPE = 1;
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const TEXT_NODE_TYPE = 3;
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const COMMENT_NODE_TYPE = 8;
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const FRAGMENT_NODE_TYPE = 11;
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export function createRenderer(opts) {
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class Node {
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tagName;
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data;
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parent;
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nodeType;
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nodeName;
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#element;
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#children = [];
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constructor(node_type, element, tag) {
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this.tagName = tag;
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this.nodeName = tag;
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this.#element = element;
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this.nodeType = node_type;
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}
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get element() {
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return this.#element;
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}
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get childNodes() {
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return this.#children;
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}
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get firstChild() {
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return this.#children[0];
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}
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get lastChild() {
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return this.#children[this.#children.lenght - 1];
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}
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get nextSibling() {
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if (this.parent) {
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const idx = this.parent.#children.findIndex((el) => el === this);
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return this.parent.#children[idx + 1] ?? null;
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}
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return null;
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}
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get className() {
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return this.getAttribute('class');
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}
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set className(className) {
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this.setAttribute('class', className);
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}
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setAttribute(key, value) {
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opts.setAttribute(this.#element, key, value);
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}
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getAttribute(key) {
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return opts.getAttribute(this.#element, key);
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}
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hasAttribute(key) {
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return !!this.getAttribute(key);
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}
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removeAttribute(key) {
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this.setAttribute(key, null);
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}
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addEventListener(name, handler, options) {
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if (this.nodeType === FRAGMENT_NODE_TYPE) return;
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opts.addEventListener(this.#element, name, handler, options);
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}
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remove() {
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if (this.parent) {
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this.parent.#children = this.parent.#children.filter((el) => el !== this);
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}
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}
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appendChild(child) {
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this.append(child);
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return child;
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}
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before(node) {
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if (this.parent) {
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const idx = this.parent.#children.findIndex((el) => el === this);
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const nodes = node.nodeType === FRAGMENT_NODE_TYPE ? node.childNodes : [node];
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this.parent.#children.splice(idx, 0, ...nodes);
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for (let node of nodes) {
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opts.insert(node.#element, this.parent.#element, this.#element);
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node.parent = this.parent;
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}
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}
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}
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append(...nodes) {
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for (let node of nodes) {
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node.parent = this;
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this.#children.push(node);
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if (this.nodeType !== FRAGMENT_NODE_TYPE) {
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opts.insert(node.#element, this.#element);
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}
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}
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}
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cloneNode() {
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const cloned = new Node(
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this.nodeType,
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this.#element != null ? opts.cloneNode(this.#element) : this.#element,
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this.tagName
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);
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for (let node of this.#children) {
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cloned.append(node.cloneNode());
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}
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return cloned;
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}
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}
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class Document {
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createElement(tag) {
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const element = opts.createElement(tag);
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return new Node(ELEMENT_NODE_TYPE, element, tag);
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}
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createDocumentFragment() {
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return new Node(FRAGMENT_NODE_TYPE);
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}
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createComment(data) {
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const comment = opts.createComment(data);
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return new Node(COMMENT_NODE_TYPE, comment, data);
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}
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createTextNode(data) {
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const element = opts.createTextNode(data);
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return new Node(TEXT_NODE_TYPE, element, data);
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}
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}
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return {
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Node,
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document: new Document()
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};
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}
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