epic-designer/dist/hooks/src/common/createEventBus.js

基于vue3的设计器,可视化开发页面表单

import { provide as A, onUnmounted as E } from "vue";
import { EVENT_BUS_KEY as R } from "../logic/useEventBus.js";
const c = /* @__PURE__ */ new Map();
function y(h = "root") {
  const p = (o) => {
    if (!c.has(o)) {
      const t = /* @__PURE__ */ new Map(), e = /* @__PURE__ */ new Map(), n = 10, l = {
        // 清空通道
        clear() {
          t.clear(), e.clear();
        },
        // 触发事件
        emit(s, ...r) {
          e.has(s) || e.set(s, []);
          const a = e.get(s);
          a.push({ args: r, timestamp: Date.now() }), a.length > n && a.shift(), t.has(s) && t.get(s).forEach((m) => {
            try {
              m(...r);
            } catch (M) {
              console.error(`事件 "${s}" 处理错误:`, M);
            }
          });
        },
        // 取消监听
        off(s, r) {
          t.has(s) && t.get(s).delete(r);
        },
        // 监听事件
        on(s, r) {
          if (t.has(s) || t.set(s, /* @__PURE__ */ new Set()), t.get(s).add(r), e.has(s) && e.get(s).length > 0) {
            const a = e.get(s)[e.get(s).length - 1];
            try {
              r(...a.args);
            } catch (m) {
              console.error(`缓存事件 "${s}" 处理错误:`, m);
            }
          }
          return () => {
            this.off(s, r);
          };
        }
      };
      c.set(o, l);
    }
    return c.get(o);
  }, i = p(h), f = p("root"), C = (o, ...t) => {
    i.emit(o, ...t);
  }, L = (o, ...t) => {
    f.emit(o, ...t);
  }, w = (o, t) => {
    i.off(o, t);
  }, B = (o, t) => {
    f.off(o, t);
  }, u = () => {
    i.clear(), c.delete(h);
  }, g = {
    clear: u,
    emit: C,
    emitRoot: L,
    off: w,
    offRoot: B,
    on: (o, t) => {
      const e = i.on(o, t);
      return E(() => {
        var n;
        e(), c.has(h) && ([...((n = i.listeners) == null ? void 0 : n.values()) || []].some(
          (s) => s.size > 0
        ) || u());
      }), e;
    },
    onRoot: (o, t) => {
      const e = f.on(o, t);
      return E(() => {
        var n;
        e(), c.has("root") && ([...((n = f.listeners) == null ? void 0 : n.values()) || []].some(
          (s) => s.size > 0
        ) || u());
      }), e;
    }
  };
  return A(R, g), g;
}
export {
  y as createEventBus
};