91 lines
No EOL
2.9 KiB
TypeScript
91 lines
No EOL
2.9 KiB
TypeScript
import {UIElement} from "./UIElement";
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import {UIEventSource} from "./UIEventSource";
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import {FixedUiElement} from "./Base/FixedUiElement";
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export class SlideShow extends UIElement {
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private readonly _embeddedElements: UIEventSource<UIElement[]>
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public readonly _currentSlide: UIEventSource<number> = new UIEventSource<number>(0);
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private readonly _noimages: UIElement;
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private _prev: FixedUiElement;
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private _next: FixedUiElement;
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constructor(
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embeddedElements: UIEventSource<UIElement[]>,
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noImages: UIElement) {
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super(embeddedElements);
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this._embeddedElements = embeddedElements;
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this.ListenTo(this._currentSlide);
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this._noimages = noImages;
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const self = this;
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this._prev = new FixedUiElement("<div class='prev-button'>" +
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"<div class='vspan'></div>" +
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"<img src='assets/arrow-left-smooth.svg' alt='Prev'/>" +
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"</div>")
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.onClick(() => {
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const current = self._currentSlide.data;
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self.MoveTo(current - 1);
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});
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this._next = new FixedUiElement("<div class='next-button'>" +
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"<div class='vspan'></div>" +
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"<img src='assets/arrow-right-smooth.svg' alt='Next'/>" +
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"</div>")
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.onClick(() => {
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const current = self._currentSlide.data;
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self.MoveTo(current + 1);
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});
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}
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protected InnerRender(): string {
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if (this._embeddedElements.data.length == 0) {
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return this._noimages.Render();
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}
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if (this._embeddedElements.data.length == 1) {
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return "<div class='image-slideshow'><div class='slides'><div class='slide'>" +
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this._embeddedElements.data[0].Render() +
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"</div></div></div>";
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}
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let slides = ""
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for (let i = 0; i < this._embeddedElements.data.length; i++) {
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let embeddedElement = this._embeddedElements.data[i];
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let state = "hidden"
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if (this._currentSlide.data === i) {
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state = "active-slide";
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}
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slides += " <div class=\"slide " + state + "\">" + embeddedElement.Render() + "</div>\n";
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}
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return "<div class='image-slideshow'>"
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+ this._prev.Render()
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+ "<div class='slides'>" + slides + "</div>"
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+ this._next.Render()
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+ "</div>";
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}
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public MoveTo(index: number) {
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if (index < 0) {
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index = this._embeddedElements.data.length - 1;
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}
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index = index % this._embeddedElements.data.length;
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this._currentSlide.setData(index);
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}
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InnerUpdate(htmlElement) {
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this._next.Update();
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this._prev.Update();
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}
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Activate() {
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for (const embeddedElement of this._embeddedElements.data) {
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embeddedElement.Activate();
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}
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this._next.Update();
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this._prev.Update();
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}
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} |