@shoelace-style/shoelace
Version:
A forward-thinking library of web components.
83 lines (80 loc) • 2.03 kB
JavaScript
import {
resize_observer_styles_default
} from "./chunk.LY2W3OWK.js";
import {
watch
} from "./chunk.SJGTYGCD.js";
import {
component_styles_default
} from "./chunk.K23QWHWK.js";
import {
ShoelaceElement,
n
} from "./chunk.QAHCGRIS.js";
import {
x
} from "./chunk.CXZZ2LVK.js";
import {
__decorateClass
} from "./chunk.625AWUY7.js";
// src/components/resize-observer/resize-observer.component.ts
var SlResizeObserver = class extends ShoelaceElement {
constructor() {
super(...arguments);
this.observedElements = [];
this.disabled = false;
}
connectedCallback() {
super.connectedCallback();
this.resizeObserver = new ResizeObserver((entries) => {
this.emit("sl-resize", { detail: { entries } });
});
if (!this.disabled) {
this.startObserver();
}
}
disconnectedCallback() {
super.disconnectedCallback();
this.stopObserver();
}
handleSlotChange() {
if (!this.disabled) {
this.startObserver();
}
}
startObserver() {
const slot = this.shadowRoot.querySelector("slot");
if (slot !== null) {
const elements = slot.assignedElements({ flatten: true });
this.observedElements.forEach((el) => this.resizeObserver.unobserve(el));
this.observedElements = [];
elements.forEach((el) => {
this.resizeObserver.observe(el);
this.observedElements.push(el);
});
}
}
stopObserver() {
this.resizeObserver.disconnect();
}
handleDisabledChange() {
if (this.disabled) {
this.stopObserver();
} else {
this.startObserver();
}
}
render() {
return x` <slot =${this.handleSlotChange}></slot> `;
}
};
SlResizeObserver.styles = [component_styles_default, resize_observer_styles_default];
__decorateClass([
n({ type: Boolean, reflect: true })
], SlResizeObserver.prototype, "disabled", 2);
__decorateClass([
watch("disabled", { waitUntilFirstUpdate: true })
], SlResizeObserver.prototype, "handleDisabledChange", 1);
export {
SlResizeObserver
};