echarts categoryFilter 源码
echarts categoryFilter 代码
文件路径：/src/chart/graph/categoryFilter.ts
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import GlobalModel from '../../model/Global';
import GraphSeriesModel, { GraphNodeItemOption } from './GraphSeries';
import type LegendModel from '../../component/legend/LegendModel';
import { isNumber } from 'zrender/src/core/util';
export default function categoryFilter(ecModel: GlobalModel) {
const legendModels = ecModel.findComponents({
mainType: 'legend'
}) as LegendModel[];
if (!legendModels || !legendModels.length) {
return;
}
ecModel.eachSeriesByType('graph', function (graphSeries: GraphSeriesModel) {
const categoriesData = graphSeries.getCategoriesData();
const graph = graphSeries.getGraph();
const data = graph.data;
const categoryNames = categoriesData.mapArray(categoriesData.getName);
data.filterSelf(function (idx) {
const model = data.getItemModel<GraphNodeItemOption>(idx);
let category = model.getShallow('category');
if (category != null) {
if (isNumber(category)) {
category = categoryNames[category];
}
// If in any legend component the status is not selected.
for (let i = 0; i < legendModels.length; i++) {
if (!legendModels[i].isSelected(category)) {
return false;
}
}
}
return true;
});
});
}
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