91 lines
3.3 KiB
TypeScript
91 lines
3.3 KiB
TypeScript
import {UIElement} from "../UIElement";
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import {ImageSearcher} from "../../Logic/ImageSearcher";
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import {UIEventSource} from "../UIEventSource";
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import {SlideShow} from "../SlideShow";
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import {FixedUiElement} from "../Base/FixedUiElement";
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import {VerticalCombine} from "../Base/VerticalCombine";
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import {Changes} from "../../Logic/Changes";
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import {VariableUiElement} from "../Base/VariableUIElement";
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import {ConfirmDialog} from "../ConfirmDialog";
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export class ImageCarousel extends UIElement {
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/**
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* There are multiple way to fetch images for an object
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* 1) There is an image tag
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* 2) There is an image tag, the image tag contains multiple ';'-seperated URLS
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* 3) there are multiple image tags, e.g. 'image', 'image:0', 'image:1', and 'image_0', 'image_1' - however, these are pretty rare so we are gonna ignore them
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* 4) There is a wikimedia_commons-tag, which either has a 'File': or a 'category:' containing images
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* 5) There is a wikidata-tag, and the wikidata item either has an 'image' attribute or has 'a link to a wikimedia commons category'
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* 6) There is a wikipedia article, from which we can deduct the wikidata item
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*
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* For some images, author and license should be shown
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*/
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private readonly searcher: ImageSearcher;
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public readonly slideshow: SlideShow;
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private readonly _uiElements: UIEventSource<UIElement[]>;
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private readonly _deleteButton: UIElement;
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constructor(tags: UIEventSource<any>, changes: Changes) {
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super(tags);
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const self = this;
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this.searcher = new ImageSearcher(tags, changes);
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this._uiElements = this.searcher.map((imageURLS: string[]) => {
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const uiElements: UIElement[] = [];
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for (const url of imageURLS) {
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const image = ImageSearcher.CreateImageElement(url);
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uiElements.push(image);
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}
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return uiElements;
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});
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this.slideshow = new SlideShow(
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this._uiElements,
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new FixedUiElement("")).HideOnEmpty(true);
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const showDeleteButton = this.slideshow._currentSlide.map((i) => {
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return self.searcher.IsDeletable(self.searcher.data[i]);
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}, [this.searcher]);
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this.slideshow._currentSlide.addCallback(() => {
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showDeleteButton.ping(); // This pings the showDeleteButton, which indicates that it has to hide it's subbuttons
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})
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const deleteCurrent = () => self.searcher.Delete(self.searcher.data[self.slideshow._currentSlide.data]);
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this._deleteButton = new ConfirmDialog(showDeleteButton,
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"<img src='assets/delete.svg' alt='Afbeelding verwijderen' class='delete-image'>",
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"<span>Afbeelding verwijderen</span>",
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"<span>Terug</span>",
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deleteCurrent,
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() => {},
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'delete-image-confirm',
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'delete-image-cancel');
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}
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InnerRender(): string {
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return "<span class='image-carousel-container'>" +
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"<div class='image-delete-container'>" +
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this._deleteButton.Render() +
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"</div>" +
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this.slideshow.Render() +
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"</span>";
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}
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InnerUpdate(htmlElement: HTMLElement) {
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super.InnerUpdate(htmlElement);
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this._deleteButton.Update();
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}
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Activate() {
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super.Activate();
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this.searcher.Activate();
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}
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} |