283 lines
9.5 KiB
Rust
283 lines
9.5 KiB
Rust
use js_sys::Function;
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use sledgehammer_bindgen::bindgen;
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use web_sys::Node;
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#[bindgen]
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mod js {
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const JS: &str = r#"
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class ListenerMap {
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constructor(root) {
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// bubbling events can listen at the root element
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this.global = {};
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// non bubbling events listen at the element the listener was created at
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this.local = {};
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this.root = null;
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this.handler = null;
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}
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create(event_name, element, bubbles) {
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if (bubbles) {
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if (this.global[event_name] === undefined) {
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this.global[event_name] = {};
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this.global[event_name].active = 1;
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this.root.addEventListener(event_name, this.handler);
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} else {
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this.global[event_name].active++;
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}
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}
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else {
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const id = element.getAttribute("data-dioxus-id");
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if (!this.local[id]) {
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this.local[id] = {};
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}
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element.addEventListener(event_name, this.handler);
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}
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}
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remove(element, event_name, bubbles) {
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if (bubbles) {
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this.global[event_name].active--;
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if (this.global[event_name].active === 0) {
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this.root.removeEventListener(event_name, this.global[event_name].callback);
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delete this.global[event_name];
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}
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}
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else {
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const id = element.getAttribute("data-dioxus-id");
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delete this.local[id][event_name];
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if (this.local[id].length === 0) {
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delete this.local[id];
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}
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element.removeEventListener(event_name, this.handler);
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}
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}
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removeAllNonBubbling(element) {
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const id = element.getAttribute("data-dioxus-id");
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delete this.local[id];
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}
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}
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function SetAttributeInner(node, field, value, ns) {
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const name = field;
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if (ns === "style") {
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// ????? why do we need to do this
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if (node.style === undefined) {
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node.style = {};
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}
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node.style[name] = value;
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} else if (ns !== null && ns !== undefined && ns !== "") {
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node.setAttributeNS(ns, name, value);
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} else {
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switch (name) {
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case "value":
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if (value !== node.value) {
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node.value = value;
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}
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break;
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case "initial_value":
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node.defaultValue = value;
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break;
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case "checked":
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node.checked = truthy(value);
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break;
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case "selected":
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node.selected = truthy(value);
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break;
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case "dangerous_inner_html":
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node.innerHTML = value;
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break;
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default:
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// https://github.com/facebook/react/blob/8b88ac2592c5f555f315f9440cbb665dd1e7457a/packages/react-dom/src/shared/DOMProperty.js#L352-L364
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if (!truthy(value) && bool_attrs.hasOwnProperty(name)) {
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node.removeAttribute(name);
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} else {
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node.setAttribute(name, value);
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}
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}
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}
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}
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function LoadChild(ptr, len) {
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// iterate through each number and get that child
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node = stack[stack.length - 1];
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ptr_end = ptr + len;
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for (; ptr < ptr_end; ptr++) {
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end = m.getUint8(ptr);
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for (node = node.firstChild; end > 0; end--) {
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node = node.nextSibling;
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}
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}
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return node;
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}
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const listeners = new ListenerMap();
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let nodes = [];
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let stack = [];
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let root;
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const templates = {};
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let node, els, end, ptr_end, k;
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export function save_template(nodes, tmpl_id) {
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templates[tmpl_id] = nodes;
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}
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export function set_node(id, node) {
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nodes[id] = node;
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}
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export function get_node(id) {
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return nodes[id];
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}
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export function initilize(root, handler) {
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listeners.handler = handler;
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nodes = [root];
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stack = [root];
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listeners.root = root;
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}
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function AppendChildren(id, many){
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root = nodes[id];
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els = stack.splice(stack.length-many);
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for (k = 0; k < many; k++) {
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root.appendChild(els[k]);
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}
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}
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const bool_attrs = {
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allowfullscreen: true,
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allowpaymentrequest: true,
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async: true,
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autofocus: true,
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autoplay: true,
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checked: true,
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controls: true,
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default: true,
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defer: true,
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disabled: true,
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formnovalidate: true,
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hidden: true,
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ismap: true,
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itemscope: true,
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loop: true,
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multiple: true,
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muted: true,
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nomodule: true,
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novalidate: true,
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open: true,
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playsinline: true,
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readonly: true,
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required: true,
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reversed: true,
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selected: true,
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truespeed: true,
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webkitdirectory: true,
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};
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function truthy(val) {
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return val === "true" || val === true;
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}
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"#;
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extern "C" {
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#[wasm_bindgen]
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pub fn save_template(nodes: Vec<Node>, tmpl_id: u32);
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#[wasm_bindgen]
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pub fn set_node(id: u32, node: Node);
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#[wasm_bindgen]
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pub fn get_node(id: u32) -> Node;
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#[wasm_bindgen]
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pub fn initilize(root: Node, handler: &Function);
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}
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fn mount_to_root() {
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"{AppendChildren(root, stack.length-1);}"
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}
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fn push_root(root: u32) {
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"{stack.push(nodes[$root$]);}"
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}
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fn append_children(id: u32, many: u32) {
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"{AppendChildren($id$, $many$);}"
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}
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fn pop_root() {
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"{stack.pop();}"
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}
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fn replace_with(id: u32, n: u32) {
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"{root = nodes[$id$]; els = stack.splice(stack.length-$n$); if (root.listening) { listeners.removeAllNonBubbling(root); } root.replaceWith(...els);}"
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}
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fn insert_after(id: u32, n: u32) {
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"{nodes[$id$].after(...stack.splice(stack.length-$n$));}"
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}
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fn insert_before(id: u32, n: u32) {
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"{nodes[$id$].before(...stack.splice(stack.length-$n$));}"
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}
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fn remove(id: u32) {
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"{node = nodes[$id$]; if (node !== undefined) { if (node.listening) { listeners.removeAllNonBubbling(node); } node.remove(); }}"
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}
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fn create_raw_text(text: &str) {
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"{stack.push(document.createTextNode($text$));}"
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}
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fn create_text_node(text: &str, id: u32) {
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"{node = document.createTextNode($text$); nodes[$id$] = node; stack.push(node);}"
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}
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fn create_placeholder(id: u32) {
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"{node = document.createElement('pre'); node.hidden = true; stack.push(node); nodes[$id$] = node;}"
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}
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fn new_event_listener(event_name: &str<u8, evt>, id: u32, bubbles: u8) {
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r#"node = nodes[id]; if(node.listening){node.listening += 1;}else{node.listening = 1;} node.setAttribute('data-dioxus-id', `\${id}`); listeners.create($event_name$, node, $bubbles$);"#
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}
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fn remove_event_listener(event_name: &str<u8, evt>, id: u32, bubbles: u8) {
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"{node = nodes[$id$]; node.listening -= 1; node.removeAttribute('data-dioxus-id'); listeners.remove(node, $event_name$, $bubbles$);}"
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}
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fn set_text(id: u32, text: &str) {
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"{nodes[$id$].textContent = $text$;}"
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}
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fn set_attribute(id: u32, field: &str<u8, attr>, value: &str, ns: &str<u8, ns_cache>) {
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"{node = nodes[$id$]; SetAttributeInner(node, $field$, $value$, $ns$);}"
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}
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fn remove_attribute(id: u32, field: &str<u8, attr>, ns: &str<u8, ns_cache>) {
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r#"{
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node = nodes[$id$];
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if (!ns) {
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switch (field) {
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case "value":
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node.value = "";
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break;
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case "checked":
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node.checked = false;
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break;
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case "selected":
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node.selected = false;
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break;
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case "dangerous_inner_html":
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node.innerHTML = "";
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break;
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default:
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node.removeAttribute(field);
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break;
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}
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} else if (ns == "style") {
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node.style.removeProperty(name);
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} else {
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node.removeAttributeNS(ns, field);
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}
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}"#
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}
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fn assign_id(ptr: u32, len: u8, id: u32) {
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"{nodes[$id$] = LoadChild($ptr$, $len$);}"
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}
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fn hydrate_text(ptr: u32, len: u8, value: &str, id: u32) {
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r#"{
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node = LoadChild($ptr$, $len$);
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if (node.nodeType == Node.TEXT_NODE) {
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node.textContent = value;
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} else {
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let text = document.createTextNode(value);
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node.replaceWith(text);
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node = text;
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}
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nodes[$id$] = node;
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}"#
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}
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fn replace_placeholder(ptr: u32, len: u8, n: u32) {
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"{els = stack.splice(stack.length - $n$); node = LoadChild($ptr$, $len$); node.replaceWith(...els);}"
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}
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fn load_template(tmpl_id: u32, index: u32, id: u32) {
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"{node = templates[$tmpl_id$][$index$].cloneNode(true); nodes[$id$] = node; stack.push(node);}"
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}
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}
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