vditor/src/ts/markdown/chartRender.ts

♏ 易于使用的 Markdown 编辑器，为适配不同的应用场景而生

import {Constants} from "../constants";
import {addScript} from "../util/addScript";
import {chartRenderAdapter} from "./adapterRender";
import {looseJsonParse} from "../util/function";

declare const echarts: {
    init(element: HTMLElement, theme?: string): IEChart;
};

export const chartRender = (element: (HTMLElement | Document) = document, cdn = Constants.CDN, theme: string) => {
    const echartsElements = chartRenderAdapter.getElements(element);
    if (echartsElements.length > 0) {
        addScript(`${cdn}/dist/js/echarts/echarts.min.js?v=5.5.1`, "vditorEchartsScript").then(() => {
            echartsElements.forEach(async (e: HTMLDivElement) => {
                if (e.parentElement.classList.contains("vditor-wysiwyg__pre") ||
                    e.parentElement.classList.contains("vditor-ir__marker--pre")) {
                    return;
                }

                const text = chartRenderAdapter.getCode(e).trim();
                if (!text) {
                    return;
                }
                try {
                    if (e.getAttribute("data-processed") === "true") {
                        return;
                    }
                    const option = await looseJsonParse(text);
                    echarts.init(e, theme === "dark" ? "dark" : undefined).setOption(option);
                    e.setAttribute("data-processed", "true");
                } catch (error) {
                    e.className = "vditor-reset--error";
                    e.innerHTML = `echarts render error: <br>${error}`;
                }
            });
        });
    }
};