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src/mixins/emitter.js 1 KB
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  function broadcast(componentName, eventName, params) {
      this.$children.forEach(child => {
          const name = child.$options.name;
  
          if (name === componentName) {
              child.$emit.apply(child, [eventName].concat(params));
          } else {
              broadcast.apply(child, [componentName, eventName].concat([params]));
          }
      });
  }
  export default {
      methods: {
          dispatch(componentName, eventName, params) {
              let parent = this.$parent || this.$root;
              let name = parent.$options.name;
  
              while (parent && (!name || name !== componentName)) {
                  parent = parent.$parent;
  
                  if (parent) {
                      name = parent.$options.name;
                  }
              }
              if (parent) {
                  parent.$emit.apply(parent, [eventName].concat(params));
              }
          },
          broadcast(componentName, eventName, params) {
              broadcast.call(this, componentName, eventName, params);
          }
      }
  };