43 lines
1.2 KiB
TypeScript
43 lines
1.2 KiB
TypeScript
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import {UIElement} from "../UIElement";
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import {UIEventSource} from "../UIEventSource";
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export class CollapseButton extends UIElement {
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public isCollapsed = new UIEventSource(false);
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constructor(idToCollapse: string) {
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super(undefined);
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this.ListenTo(this.isCollapsed);
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this.isCollapsed.addCallback((collapse) => {
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const el = document.getElementById(idToCollapse);
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if (el === undefined || el === null) {
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console.log("Element not found")
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return;
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}
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if (collapse) {
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el.style.height = "3.5em";
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el.style.width = "15em";
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} else {
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el.style.height = "auto";
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el.style.width = "auto";
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}
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});
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const self = this;
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this.onClick(() => {
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self.isCollapsed.setData(!self.isCollapsed.data);
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})
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}
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protected InnerRender(): string {
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const up = './assets/arrow-up.svg';
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const down = './assets/arrow-down.svg';
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let arrow = up;
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if (this.isCollapsed.data) {
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arrow = down;
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}
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return `<img class='collapse-button' src='${arrow}' alt='collapse'>`;
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}
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}
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