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Web's fastest template library to build user interfaces.
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import { TemplateDOM, Template, MikadoOptions, NodeCache, ProxyCache } from "./type.js";
import Mikado, { includes } from "./mikado.js";
import { dispatch, listen } from "./event.js";
/**
* @param {Element} root
* @param {Array} path
* @param {boolean=} _use_cache
* @return {Array}
*/
export function create_path(root, path, _use_cache) {
//profiler_start("create_path");
//console.time("create_path");
/** @type {Array|undefined} */
let cache_clone;
if (_use_cache) {
// when path is created there don't exist a node cache,
// so it can be used temporary to pass the full vcache array
if (cache_clone = root._mkc) {
root._mkc = null;
}
}
const length = path.length,
new_path = [],
vcache = {};
/** @type {Array} */
// new Array(length); slows down
/** @dict */
for (let x = 0, item, vpath, node_parent, node, cache = null /*, last, cache_index = 0*/; x < length; x++) {
item = path[x];
vpath = item.v;
if (vpath) {
node = node_parent = vcache[vpath];
if (!node) {
node_parent = resolve(root, vpath, vcache);
node = node_parent[0];
node_parent = node_parent[1] || node;
}
} else {
node = node_parent = root;
}
if (_use_cache /*&& last !== node_parent*/) {
//last = node_parent;
cache = cache_clone ? cache_clone[x] : {};
node_parent._mkc = cache;
}
new_path[x] = new Cache(cache, node, "");
}
root._mkp = new_path;
//profiler_end("create_path");
//console.timeEnd("create_path");
return new_path;
}
/**
* @param {Node} node
* @param {string} path
* @param {Object} cache
* @return {Array}
*/
function resolve(node, path, cache) {
//profiler_start("resolve");
for (let i = 0, length = path.length, tmp = ""; i < length; i++) {
const current_path = path[i];
tmp += current_path;
if (cache[tmp]) {
node = cache[tmp];
} else {
if (">" === current_path) {
//node = node.firstElementChild;
node = node.firstChild;
} else if ("|" === current_path) {
return [node.firstChild, node];
} else if ("@" === current_path) {
return [node.style, node];
} else /*if(current_path === "+")*/{
//node = node.nextElementSibling;
node = node.nextSibling;
}
cache[tmp] = node;
}
}
//profiler_end("resolve");
return [node];
}
/**
* @param {!Mikado} self
* @param {TemplateDOM} tpl
* @param {Array} path
* @param {string} vpath
* @param {Element|Node=} vnode Exists on hydration
* @param {boolean|number=} _recursive
* @returns {Element|Node}
*/
export function construct(self, tpl, path, vpath, vnode, _recursive) {
if (!_recursive) {
self.fullproxy = 1;
}
const node = vnode || (tpl.tag ? tpl.svg ? document.createElementNS("http://www.w3.org/2000/svg", tpl.tag) : document.createElement(tpl.tag) : document.createTextNode( /** @type {string} */tpl.text));
let cache, val;
if (val = tpl.class) {
if ("object" == typeof val) {
/*cache ||*/path.push(new Cache(cache = { _c: "" }, node, vpath));
if (val = val[0]) {
/** @type {ProxyCache} */
const proxy = {
fn: "_c",
index: path.length - 1
};
init_proxy(self, val, proxy);
} else {
self.fullproxy = 0;
}
} else if (!vnode) {
node.className = val;
}
}
if (val = tpl.attr) {
for (const key in val) {
let item = val[key];
if ("object" == typeof item) {
cache || path.push(new Cache(cache = {}, node, vpath));
cache["_a" + key] = !1;
if (item = item[0]) {
/** @type {ProxyCache} */
const proxy = {
fn: "_a",
index: path.length - 1,
key
};
init_proxy(self, item, proxy);
} else {
self.fullproxy = 0;
}
} else if (!vnode) {
node.setAttribute(key, item);
}
}
}
if (val = tpl.event) {
for (let key in val) {
let skip;
if (!vnode) {
// handle common non-bubbling events
if ("load" == key || "error" == key) {
window.dispatch = dispatch;
val["on" + key] = "dispatch('" + val[key] + "', this)";
key = "on" + key;
skip = 1;
}
node.setAttribute(key, val[key]);
}
skip || listen(key);
}
}
if (val = tpl.style) {
if ("object" == typeof val) {
path.push(new Cache(cache || (cache = {}), node.style, vpath + "@"));
cache._s = "";
if (val = val[0]) {
/** @type {ProxyCache} */
const proxy = {
fn: "_s",
index: path.length - 1
};
init_proxy(self, val, proxy);
} else {
self.fullproxy = 0;
}
} else if (!vnode) {
node.style.cssText = val;
}
}
if (val = tpl.text) {
if ("object" == typeof val) {
let child = node;
val = val[0];
if (tpl.tag) {
vpath += "|";
child = !vnode && node.firstChild;
// prepare dynamic expressions on text nodes
if (!child) {
child = document.createTextNode(val);
node.appendChild(child);
}
} else {
// when no tag exists, as series of text nodes can't share cache like on element node
cache = {};
}
(cache || (cache = {}))._t = val;
path.push(new Cache(cache, /** @type {Element|Node} */child, vpath));
if (val) {
/** @type {ProxyCache} */
const proxy = {
fn: "_t",
index: path.length - 1
};
init_proxy(self, val, proxy);
} else {
self.fullproxy = 0;
}
} else if (!vnode) {
if (tpl.tag) {
node.textContent = val;
} else {
node.nodeValue = /** @type {string} */val;
}
}
} else if (val = tpl.child) {
if (vnode) {
//vnode = vnode.firstElementChild;
vnode = vnode.firstChild;
if (!vnode) {
console.warn("Hydration failed of template '" + self.name + "' because the existing DOM structure was incompatible. Falls back to factory construction instead.");
return null;
}
}
if (val.constructor !== Array) {
val = [val];
}
for (let i = 0, child, length = val.length; i < length; i++) {
child = val[i];
if (i) {
vpath += "+";
} else {
vpath += ">";
}
const tmp = construct(self, child, path, vpath, vnode, 1);
if (vnode) {
if (i < length - 1) {
//vnode = vnode.nextElementSibling;
vnode = vnode.nextSibling;
if (!vnode) {
console.warn("Hydration failed of template '" + self.name + "' because the existing DOM structure was incompatible. Falls back to factory construction instead.");
return null;
}
}
} else {
node.appendChild(tmp);
}
}
} else if (val = tpl.html) {
if ("object" == typeof val) {
cache || path.push(new Cache(cache = {}, node, vpath));
cache._h = "";
if (val = val[0]) {
/** @type {ProxyCache} */
const proxy = {
fn: "_h",
index: path.length - 1
};
init_proxy(self, val, proxy);
} else {
self.fullproxy = 0;
}
} else if (!vnode) {
node.innerHTML = val;
}
} else if (val = tpl.inc /*|| tpl.for || tpl.if*/) {
cache || path.push(new Cache(null, node, vpath));
let mikado;
// val is equal 1 when a cached structure was re-used by the compiler,
// it just needs push to the path
if ("string" == typeof val) {
mikado = includes[val];
if (!mikado) throw new Error("The partial template '" + val + "' which is included by the root template '" + self.name + "' was not registered. When using named includes make sure you register all your includes by Mikado.register(tpl) before instantiating the Mikado view instance.");
// From this point it needs the Mikado instance to push to inc[]
if (!(mikado instanceof Mikado)) {
const template = /** @type {Template} */mikado[0],
options = /** @type {MikadoOptions} */mikado[1];
if (options) {
// Includes should be treated as non-async, because async is already controlled by the initial render.
// The async callback needs to be called when the whole render process including partials is done.
// Instead of async-await the whole render chain it is even more clean to process at least one full template render in a single asynchronous animation frame.
// This also has some advantages when rendering multiple Mikado instances at the same time in "parallel".
options.async = !1;
if (vnode) {
// Continue hydration of nested includes
options.root = /** @type {Element} */vnode;
options.hydrate = !0;
}
}
// Assign back the new instance, since it does no longer need the template definition,
// because Mikado partials which was registered by Mikado.register() are globally shared.
includes[val] = mikado = new Mikado(template, options);
}
} else if (1 !== val) {
const index = self.inc.length;
if (!self.tpl.fn.length) {
throw new Error("The template '" + self.name + "|" + index + "' has conflicts. It should provide a handler entry, but wasn't found.");
}
val = /** @type {TemplateDOM} */val;
/**
* @type {Template}
*/
const tpl = {
name: self.name + "|" + index,
tpl: val,
key: val.key,
cache: val.cache,
fn: self.tpl.fn
},
options = {
recycle: self.recycle,
cache: self.cache,
pool: !!self.pool,
state: self.state,
mount: /** @type {Element} */node,
hydrate: !!vnode
// Includes are treated as non-async,
// because async is already controlled by initial render
// and therefore there are already async
// this also makes callback handling more simple
//async: false // default
};
/**
* @type {MikadoOptions}
*/
mikado = new Mikado(tpl, options);
}
if (1 !== val) {
self.inc.push(mikado);
}
}
if (cache) {
node._mkc = cache;
}
if (!_recursive) {
node._mkp = path;
}
return node;
}
/**
* @param {!Mikado} self
* @param {string} key
* @param {ProxyCache} payload
*/
function init_proxy(self, key, payload) {
self.proxy || (self.proxy = {});
(self.proxy[key] || (self.proxy[key] = [])).push(payload);
}
/** @dict */
export const idl_attributes = {
checked: 1,
selected: 1,
hidden: 1
};
/**
* @constructor
* @const
*/
export function Cache(cache, node, vpath) {
/** @const {NodeCache} */
this.c = cache;
/** @const {Element|Node|CSSStyleDeclaration} */
this.n = node;
/** @const {string} */
this.v = vpath;
}
/**
* @param {string} key
* @param {string|boolean} value
* @param {boolean} factory
* @param {NodeCache|boolean=} cache
* @param {number=} index
* @const
*/
Cache.prototype._a = function (key, value, factory, cache, index) {
if (this.c) {
if (cache) {
if (index || 0 === index) {
cache = cache[index] || (cache[index] = {});
}
cache["_a" + key] = value;
}
if (this.c["_a" + key] === value) {
return;
}
this.c["_a" + key] = value;
}
// IDL attributes are faster but "selected" didn't reflect content attribute state
if (idl_attributes[key] && (!factory || "selected" !== key)) {
this.n[key] = value;
} else {
!1 === value ? this.n.removeAttribute(key) : this.n.setAttribute(key, value);
}
};
/**
* @param {string} text
* @param {NodeCache|boolean=} cache
* @param {number=} index
* @const
*/
Cache.prototype._t = function (text, cache, index) {
if (this.c) {
if (cache) {
if (index || 0 === index) {
cache = cache[index] || (cache[index] = {});
}
cache._t = text;
}
if (this.c._t === text) {
return;
}
this.c._t = text;
}
this.n.nodeValue = text;
};
/**
* @param {string} classname
* @param {NodeCache|boolean=} cache
* @param {number=} index
* @const
*/
Cache.prototype._c = function (classname, cache, index) {
if (this.c) {
if (cache) {
if (index || 0 === index) {
cache = cache[index] || (cache[index] = {});
}
cache._c = classname;
}
if (this.c._c === classname) {
return;
}
this.c._c = classname;
}
this.n.className = classname;
};
/**
* @param {string} css
* @param {NodeCache|boolean=} cache
* @param {number=} index
* @const
*/
Cache.prototype._s = function (css, cache, index) {
if (this.c) {
if (cache) {
if (index || 0 === index) {
cache = cache[index] || (cache[index] = {});
}
cache._s = css;
}
if (this.c._s === css) {
return;
}
this.c._s = css;
}
this.n.cssText = css;
};
/**
* @param {string} html
* @param {NodeCache|boolean=} cache
* @param {number=} index
* @const
*/
Cache.prototype._h = function (html, cache, index) {
if (this.c) {
if (cache) {
if (index || 0 === index) {
cache = cache[index] || (cache[index] = {});
}
cache._h = html;
}
if (this.c._h === html) {
return;
}
this.c._h = html;
}
this.n.innerHTML = html;
};
// It needs a default export here, because proxy handler methods are passed by string keys like "_t"
/** @export */
Cache.prototype._a;
/** @export */
Cache.prototype._t;
/** @export */
Cache.prototype._s;
/** @export */
Cache.prototype._c;
/** @export */
Cache.prototype._h; © 2015 - 2025 Weber Informatics LLC | Privacy Policy