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class ZComponent extends HTMLElement {
constructor() {
super();
this.attachShadow({ mode: 'open' });
}
connectedCallback() {
const type = this.getAttribute('type');
if (type == null) {
throw `component without any type given.`;
}
const template = document.getElementById(`@${type}`);
if (template == null) {
throw `component '${type}' does not exist.`;
}
const node = document.importNode(template.content, true);
this.shadowRoot.appendChild(node);
Zenv.constructors[`component__${type}`](new Zenv(this));
}
}
class Zenv {
static constructors = {};
constructor(doc) {
this.document = doc;
}
component(type, slots) {
const element = document.createElement('z-component');
element.setAttribute('type', type);
for (const name in slots) {
const slot = slots[name];
slot.setAttribute('slot', name);
element.appendChild(slot);
}
return element;
}
populate_attributes(obj, attrs) {
for (const attr in attrs) {
if (typeof(obj[attr]) == 'object' && typeof(attrs[attr]) == 'object') {
populate_attributes(obj[attr], attrs[attr]);
} else {
obj[attr] = attrs[attr];
}
}
}
native(name, options) {
const element = document.createElement(name);
Zenv.populate_attributes(element, options);
return element;
}
by_id(id) {
return this.document.shadowRoot.getElementById(id);
}
by_selector(query) {
return this.document.shadowRoot.querySelector(query);
}
by_selector_all(query) {
return this.document.shadowRoot.querySelectorAll(query);
}
}
Z = new Zenv(document.body);
customElements.define("z-component", ZComponent);
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