50 lines
No EOL
1.5 KiB
TypeScript
50 lines
No EOL
1.5 KiB
TypeScript
import {InputElement} from "./InputElement";
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import {UIEventSource} from "../../Logic/UIEventSource";
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export default class Slider extends InputElement<number> {
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private readonly _value: UIEventSource<number>
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private min: number;
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private max: number;
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private step: number;
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/**
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* Constructs a slider input element for natural numbers
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* @param min: the minimum value that is allowed, inclusive
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* @param max: the max value that is allowed, inclusive
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* @param options: value: injectable value; step: the step size of the slider
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*/
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constructor(min: number, max: number, options?: {
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value?: UIEventSource<number>,
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step?: 1 | number
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}) {
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super();
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this.max = max;
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this.min = min;
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this._value = options?.value ?? new UIEventSource<number>(min)
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this.step = options?.step ?? 1;
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}
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GetValue(): UIEventSource<number> {
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return this._value;
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}
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protected InnerConstructElement(): HTMLElement {
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const el = document.createElement("input")
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el.type = "range"
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el.min = "" + this.min
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el.max = "" + this.max
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el.step = "" + this.step
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const valuestore = this._value
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el.oninput = () => {
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valuestore.setData(Number(el.value))
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}
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valuestore.addCallbackAndRunD(v => el.value = ""+valuestore.data)
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return el;
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}
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IsValid(t: number): boolean {
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return Math.round(t) == t && t >= this.min && t <= this.max;
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}
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} |