41 lines
1000 B
TypeScript
41 lines
1000 B
TypeScript
import { getKeybindings } from "../keybindings.ts";
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import { Loader } from "./loader.ts";
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/**
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* Loader that can be cancelled with Escape.
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* Extends Loader with an AbortSignal for cancelling async operations.
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*
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* @example
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* const loader = new CancellableLoader(tui, cyan, dim, "Working...");
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* loader.onAbort = () => done(null);
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* doWork(loader.signal).then(done);
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*/
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export class CancellableLoader extends Loader {
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private abortController = new AbortController();
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/** Called when user presses Escape */
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onAbort?: () => void;
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/** AbortSignal that is aborted when user presses Escape */
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get signal(): AbortSignal {
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return this.abortController.signal;
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}
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/** Whether the loader was aborted */
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get aborted(): boolean {
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return this.abortController.signal.aborted;
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}
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handleInput(data: string): void {
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const kb = getKeybindings();
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if (kb.matches(data, "tui.select.cancel")) {
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this.abortController.abort();
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this.onAbort?.();
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}
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}
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dispose(): void {
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this.stop();
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}
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}
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