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node_modules/echarts/src/component/brush/preprocessor.js 2.31 KB
aaac7fed   liuqimichale   add
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  /*
  * 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 * as zrUtil from 'zrender/src/core/util';
  
  var DEFAULT_TOOLBOX_BTNS = ['rect', 'polygon', 'keep', 'clear'];
  
  export default function (option, isNew) {
      var brushComponents = option && option.brush;
      if (!zrUtil.isArray(brushComponents)) {
          brushComponents = brushComponents ? [brushComponents] : [];
      }
  
      if (!brushComponents.length) {
          return;
      }
  
      var brushComponentSpecifiedBtns = [];
  
      zrUtil.each(brushComponents, function (brushOpt) {
          var tbs = brushOpt.hasOwnProperty('toolbox')
              ? brushOpt.toolbox : [];
  
          if (tbs instanceof Array) {
              brushComponentSpecifiedBtns = brushComponentSpecifiedBtns.concat(tbs);
          }
      });
  
      var toolbox = option && option.toolbox;
  
      if (zrUtil.isArray(toolbox)) {
          toolbox = toolbox[0];
      }
      if (!toolbox) {
          toolbox = {feature: {}};
          option.toolbox = [toolbox];
      }
  
      var toolboxFeature = (toolbox.feature || (toolbox.feature = {}));
      var toolboxBrush = toolboxFeature.brush || (toolboxFeature.brush = {});
      var brushTypes = toolboxBrush.type || (toolboxBrush.type = []);
  
      brushTypes.push.apply(brushTypes, brushComponentSpecifiedBtns);
  
      removeDuplicate(brushTypes);
  
      if (isNew && !brushTypes.length) {
          brushTypes.push.apply(brushTypes, DEFAULT_TOOLBOX_BTNS);
      }
  }
  
  function removeDuplicate(arr) {
      var map = {};
      zrUtil.each(arr, function (val) {
          map[val] = 1;
      });
      arr.length = 0;
      zrUtil.each(map, function (flag, val) {
          arr.push(val);
      });
  }