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Viewing file:     interactionMutex.js (1.58 KB)      -rw-r--r--

/*
* 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 () {}
);