85 lines
No EOL
2.6 KiB
TypeScript
85 lines
No EOL
2.6 KiB
TypeScript
import {UIElement} from "../UIElement";
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import {UIEventSource} from "../UIEventSource";
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import {UIInputElement} from "./UIInputElement";
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export class TextField<T> extends UIInputElement<T> {
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private value: UIEventSource<string>;
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private mappedValue: UIEventSource<T>;
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/**
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* Pings and has the value data
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*/
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public enterPressed = new UIEventSource<string>(undefined);
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private _placeholder: UIEventSource<string>;
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private _pretext: string;
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private _fromString: (string: string) => T;
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constructor(options: {
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placeholder?: UIEventSource<string>,
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toString: (t: T) => string,
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fromString: (string: string) => T,
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pretext?: string,
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value?: UIEventSource<T>
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}) {
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super(options?.placeholder);
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this.value = new UIEventSource<string>("");
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this.mappedValue = options?.value ?? new UIEventSource<T>(undefined);
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this.value.addCallback((str) => this.mappedValue.setData(options.fromString(str)));
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this.mappedValue.addCallback((t) => this.value.setData(options.toString(t)));
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this._placeholder = options?.placeholder ?? new UIEventSource<string>("");
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this._pretext = options?.pretext ?? "";
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const self = this;
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this.mappedValue.addCallback((t) => {
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if (t === undefined && t === null) {
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return;
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}
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const field = document.getElementById('text-' + this.id);
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if (field === undefined && field === null) {
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return;
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}
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field.value = options.toString(t);
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})
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}
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GetValue(): UIEventSource<T> {
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return this.mappedValue;
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}
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protected InnerRender(): string {
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return this._pretext + "<form onSubmit='return false' class='form-text-field'>" +
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"<input type='text' placeholder='" + (this._placeholder.data ?? "") + "' id='text-" + this.id + "'>" +
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"</form>";
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}
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InnerUpdate(htmlElement: HTMLElement) {
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const field = document.getElementById('text-' + this.id);
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const self = this;
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field.oninput = () => {
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// @ts-ignore
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self.value.setData(field.value);
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};
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field.addEventListener("keyup", function (event) {
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if (event.key === "Enter") {
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// @ts-ignore
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self.enterPressed.setData(field.value);
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}
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});
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}
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Clear() {
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const field = document.getElementById('text-' + this.id);
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if (field !== undefined) {
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// @ts-ignore
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field.value = "";
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}
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}
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} |