63 lines
1.5 KiB
JavaScript
63 lines
1.5 KiB
JavaScript
import {SimpleTile} from "./SimpleTile.js";
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import {UpdateAction} from "../UpdateAction.js";
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export class GapTile extends SimpleTile {
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constructor(options, timeline) {
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super(options);
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this._timeline = timeline;
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this._loading = false;
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this._error = null;
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}
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async fill() {
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// prevent doing this twice
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if (!this._loading) {
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this._loading = true;
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this.emitUpdate("isLoading");
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try {
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await this._timeline.fillGap(this._entry, 10);
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} catch (err) {
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console.error(`timeline.fillGap(): ${err.message}:\n${err.stack}`);
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this._error = err;
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this.emitUpdate("error");
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} finally {
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this._loading = false;
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this.emitUpdate("isLoading");
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}
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}
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}
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updateEntry(entry, params) {
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super.updateEntry(entry, params);
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if (!entry.isGap) {
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return UpdateAction.Remove();
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} else {
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return UpdateAction.Nothing();
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}
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}
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get shape() {
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return "gap";
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}
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get isLoading() {
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return this._loading;
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}
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get isUp() {
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return this._entry.direction.isBackward;
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}
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get isDown() {
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return this._entry.direction.isForward;
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}
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get error() {
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if (this._error) {
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const dir = this._entry.prev_batch ? "previous" : "next";
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return `Could not load ${dir} messages: ${this._error.message}`;
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}
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return null;
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}
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}
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