@antv/s2/esm/renderer/RendererFactory.js

effective spreadsheet render core lib

import { CellRendererType } from '../common/constant/renderer';
import { ImageRenderer } from './ImageRenderer';
import { VideoRenderer } from './VideoRenderer';
export class SingletonRenderer {
    static getInstance(type) {
        if (!SingletonRenderer.instances.has(type)) {
            let renderer;
            switch (type) {
                case CellRendererType.IMAGE: {
                    renderer = new ImageRenderer();
                    break;
                }
                case CellRendererType.VIDEO: {
                    renderer = new VideoRenderer();
                    break;
                }
                default: {
                    renderer = null;
                }
            }
            if (renderer) {
                SingletonRenderer.instances.set(type, renderer);
            }
        }
        return SingletonRenderer.instances.get(type);
    }
    static render(renderer, cell) {
        return SingletonRenderer.getInstance(renderer.type).process(renderer, cell);
    }
}
SingletonRenderer.instances = new Map();
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