mapcomplete/UI/Image/ImageCarousel.ts
2020-07-07 15:08:52 +02:00

82 lines
No EOL
2.9 KiB
TypeScript

import {UIElement} from "../UIElement";
import {ImageSearcher} from "../../Logic/ImageSearcher";
import {UIEventSource} from "../UIEventSource";
import {SlideShow} from "../SlideShow";
import {FixedUiElement} from "../Base/FixedUiElement";
import {VerticalCombine} from "../Base/VerticalCombine";
import {Changes} from "../../Logic/Changes";
import {VariableUiElement} from "../Base/VariableUIElement";
export class ImageCarousel extends UIElement {
/**
* There are multiple way to fetch images for an object
* 1) There is an image tag
* 2) There is an image tag, the image tag contains multiple ';'-seperated URLS
* 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
* 4) There is a wikimedia_commons-tag, which either has a 'File': or a 'category:' containing images
* 5) There is a wikidata-tag, and the wikidata item either has an 'image' attribute or has 'a link to a wikimedia commons category'
* 6) There is a wikipedia article, from which we can deduct the wikidata item
*
* For some images, author and license should be shown
*/
private readonly searcher: ImageSearcher;
public readonly slideshow: SlideShow;
private readonly _uiElements: UIEventSource<UIElement[]>;
private readonly _deleteButtonText = new UIEventSource<string>("");
private readonly _deleteButton: UIElement;
constructor(tags: UIEventSource<any>, changes: Changes) {
super(tags);
const self = this;
this.searcher = new ImageSearcher(tags, changes);
this._uiElements = this.searcher.map((imageURLS: string[]) => {
const uiElements: UIElement[] = [];
for (const url of imageURLS) {
const image = ImageSearcher.CreateImageElement(url);
uiElements.push(image);
}
return uiElements;
});
this.slideshow = new SlideShow(
this._uiElements,
new FixedUiElement("")).HideOnEmpty(true);
this._deleteButtonText = this.slideshow._currentSlide.map((i) => {
if(self.searcher.IsDeletable(self.searcher.data[i])){
return "DELETE";
}else{
return "";
}
});
this._deleteButton = new VariableUiElement(this._deleteButtonText)
.HideOnEmpty(true)
.onClick(() => {
self.searcher.Delete(self.searcher.data[self.slideshow._currentSlide.data]);
});
}
InnerRender(): string {
return this.slideshow.Render() ;
// + this._deleteButton.Render();
}
InnerUpdate(htmlElement: HTMLElement) {
super.InnerUpdate(htmlElement);
this._deleteButton.Update();
}
Activate() {
super.Activate();
this.searcher.Activate();
}
}