TimelineModel.js

var zrUtil = require("zrender/lib/core/util");

var ComponentModel = require("../../model/Component");

var List = require("../../data/List");

var modelUtil = require("../../util/model");

/*
* 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.
*/
var TimelineModel = ComponentModel.extend({
  type: 'timeline',
  layoutMode: 'box',

  /**
   * @protected
   */
  defaultOption: {
    zlevel: 0,
    // 一级层叠
    z: 4,
    // 二级层叠
    show: true,
    axisType: 'time',
    // 模式是时间类型，支持 value, category
    realtime: true,
    left: '20%',
    top: null,
    right: '20%',
    bottom: 0,
    width: null,
    height: 40,
    padding: 5,
    controlPosition: 'left',
    // 'left' 'right' 'top' 'bottom' 'none'
    autoPlay: false,
    rewind: false,
    // 反向播放
    loop: true,
    playInterval: 2000,
    // 播放时间间隔，单位ms
    currentIndex: 0,
    itemStyle: {},
    label: {
      color: '#000'
    },
    data: []
  },

  /**
   * @override
   */
  init: function (option, parentModel, ecModel) {
    /**
     * @private
     * @type {module:echarts/data/List}
     */
    this._data;
    /**
     * @private
     * @type {Array.<string>}
     */

    this._names;
    this.mergeDefaultAndTheme(option, ecModel);

    this._initData();
  },

  /**
   * @override
   */
  mergeOption: function (option) {
    TimelineModel.superApply(this, 'mergeOption', arguments);

    this._initData();
  },

  /**
   * @param {number} [currentIndex]
   */
  setCurrentIndex: function (currentIndex) {
    if (currentIndex == null) {
      currentIndex = this.option.currentIndex;
    }

    var count = this._data.count();

    if (this.option.loop) {
      currentIndex = (currentIndex % count + count) % count;
    } else {
      currentIndex >= count && (currentIndex = count - 1);
      currentIndex < 0 && (currentIndex = 0);
    }

    this.option.currentIndex = currentIndex;
  },

  /**
   * @return {number} currentIndex
   */
  getCurrentIndex: function () {
    return this.option.currentIndex;
  },

  /**
   * @return {boolean}
   */
  isIndexMax: function () {
    return this.getCurrentIndex() >= this._data.count() - 1;
  },

  /**
   * @param {boolean} state true: play, false: stop
   */
  setPlayState: function (state) {
    this.option.autoPlay = !!state;
  },

  /**
   * @return {boolean} true: play, false: stop
   */
  getPlayState: function () {
    return !!this.option.autoPlay;
  },

  /**
   * @private
   */
  _initData: function () {
    var thisOption = this.option;
    var dataArr = thisOption.data || [];
    var axisType = thisOption.axisType;
    var names = this._names = [];

    if (axisType === 'category') {
      var idxArr = [];
      zrUtil.each(dataArr, function (item, index) {
        var value = modelUtil.getDataItemValue(item);
        var newItem;

        if (zrUtil.isObject(item)) {
          newItem = zrUtil.clone(item);
          newItem.value = index;
        } else {
          newItem = index;
        }

        idxArr.push(newItem);

        if (!zrUtil.isString(value) && (value == null || isNaN(value))) {
          value = '';
        }

        names.push(value + '');
      });
      dataArr = idxArr;
    }

    var dimType = {
      category: 'ordinal',
      time: 'time'
    }[axisType] || 'number';
    var data = this._data = new List([{
      name: 'value',
      type: dimType
    }], this);
    data.initData(dataArr, names);
  },
  getData: function () {
    return this._data;
  },

  /**
   * @public
   * @return {Array.<string>} categoreis
   */
  getCategories: function () {
    if (this.get('axisType') === 'category') {
      return this._names.slice();
    }
  }
});
var _default = TimelineModel;
module.exports = _default;