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

var Group = require("zrender/lib/container/Group");

var componentUtil = require("../util/component");

var clazzUtil = require("../util/clazz");

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

function Chart() {
  /**
   * @type {module:zrender/container/Group}
   * @readOnly
   */
  this.group = new Group();
  /**
   * @type {string}
   * @readOnly
   */

  this.uid = componentUtil.getUID('viewChart');
}

Chart.prototype = {
  type: 'chart',

  /**
   * Init the chart
   * @param  {module:echarts/model/Global} ecModel
   * @param  {module:echarts/ExtensionAPI} api
   */
  init: function (ecModel, api) {},

  /**
   * Render the chart
   * @param  {module:echarts/model/Series} seriesModel
   * @param  {module:echarts/model/Global} ecModel
   * @param  {module:echarts/ExtensionAPI} api
   * @param  {Object} payload
   */
  render: function (seriesModel, ecModel, api, payload) {},

  /**
   * Highlight series or specified data item
   * @param  {module:echarts/model/Series} seriesModel
   * @param  {module:echarts/model/Global} ecModel
   * @param  {module:echarts/ExtensionAPI} api
   * @param  {Object} payload
   */
  highlight: function (seriesModel, ecModel, api, payload) {
    toggleHighlight(seriesModel.getData(), payload, 'emphasis');
  },

  /**
   * Downplay series or specified data item
   * @param  {module:echarts/model/Series} seriesModel
   * @param  {module:echarts/model/Global} ecModel
   * @param  {module:echarts/ExtensionAPI} api
   * @param  {Object} payload
   */
  downplay: function (seriesModel, ecModel, api, payload) {
    toggleHighlight(seriesModel.getData(), payload, 'normal');
  },

  /**
   * Remove self
   * @param  {module:echarts/model/Global} ecModel
   * @param  {module:echarts/ExtensionAPI} api
   */
  remove: function (ecModel, api) {
    this.group.removeAll();
  },

  /**
   * Dispose self
   * @param  {module:echarts/model/Global} ecModel
   * @param  {module:echarts/ExtensionAPI} api
   */
  dispose: function () {}
  /**
   * The view contains the given point.
   * @interface
   * @param {Array.<number>} point
   * @return {boolean}
   */
  // containPoint: function () {}

};
var chartProto = Chart.prototype;

chartProto.updateView = chartProto.updateLayout = chartProto.updateVisual = function (seriesModel, ecModel, api, payload) {
  this.render(seriesModel, ecModel, api, payload);
};
/**
 * Set state of single element
 * @param  {module:zrender/Element} el
 * @param  {string} state
 */


function elSetState(el, state) {
  if (el) {
    el.trigger(state);

    if (el.type === 'group') {
      for (var i = 0; i < el.childCount(); i++) {
        elSetState(el.childAt(i), state);
      }
    }
  }
}
/**
 * @param  {module:echarts/data/List} data
 * @param  {Object} payload
 * @param  {string} state 'normal'|'emphasis'
 * @inner
 */


function toggleHighlight(data, payload, state) {
  var dataIndex = modelUtil.queryDataIndex(data, payload);

  if (dataIndex != null) {
    zrUtil.each(modelUtil.normalizeToArray(dataIndex), function (dataIdx) {
      elSetState(data.getItemGraphicEl(dataIdx), state);
    });
  } else {
    data.eachItemGraphicEl(function (el) {
      elSetState(el, state);
    });
  }
} // Enable Chart.extend.


clazzUtil.enableClassExtend(Chart, ['dispose']); // Add capability of registerClass, getClass, hasClass, registerSubTypeDefaulter and so on.

clazzUtil.enableClassManagement(Chart, {
  registerWhenExtend: true
});
var _default = Chart;
module.exports = _default;