Function queryReferringComponents

_benchmarks/sample_echarts.js:7824–7861

(ecModel, mainType, userOption, opt)

      enableNone: true
    };
    function queryReferringComponents(ecModel, mainType, userOption, opt) {
      opt = opt || SINGLE_REFERRING;
      var indexOption = userOption.index;
      var idOption = userOption.id;
      var nameOption = userOption.name;
      var result = {
        models: null,
        specified: indexOption != null || idOption != null || nameOption != null
      };

      if (!result.specified) {
        // Use the first as default if `useDefault`.
        var firstCmpt = void 0;
        result.models = opt.useDefault && (firstCmpt = ecModel.getComponent(mainType)) ? [firstCmpt] : [];
        return result;
      }

      if (indexOption === 'none' || indexOption === false) {
        assert(opt.enableNone, '`"none"` or `false` is not a valid value on index option.');
        result.models = [];
        return result;
      } // `queryComponents` will return all components if
      // both all of index/id/name are null/undefined.


      if (indexOption === 'all') {
        assert(opt.enableAll, '`"all"` is not a valid value on index option.');
        indexOption = idOption = nameOption = null;
      }

      result.models = ecModel.queryComponents({
        mainType: mainType,
        index: indexOption,
        id: idOption,
        name: nameOption
      });
      return result;
    }
    function setAttribute(dom, key, value) {
      dom.setAttribute ? dom.setAttribute(key, value) : dom[key] = value;
    }