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node_modules/echarts/src/component/helper/interactionMutex.js 1.58 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 echarts from '../../echarts';
  
  var ATTR = '\0_ec_interaction_mutex';
  
  export function take(zr, resourceKey, userKey) {
      var store = getStore(zr);
      store[resourceKey] = userKey;
  }
  
  export function release(zr, resourceKey, userKey) {
      var store = getStore(zr);
      var uKey = store[resourceKey];
  
      if (uKey === userKey) {
          store[resourceKey] = null;
      }
  }
  
  export function isTaken(zr, resourceKey) {
      return !!getStore(zr)[resourceKey];
  }
  
  function getStore(zr) {
      return zr[ATTR] || (zr[ATTR] = {});
  }
  
  /**
   * payload: {
   *     type: 'takeGlobalCursor',
   *     key: 'dataZoomSelect', or 'brush', or ...,
   *         If no userKey, release global cursor.
   * }
   */
  echarts.registerAction(
      {type: 'takeGlobalCursor', event: 'globalCursorTaken', update: 'update'},
      function () {}
  );