Model.js

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

var env = require("zrender/lib/core/env");

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

var makeInner = _model.makeInner;

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

var enableClassExtend = _clazz.enableClassExtend;
var enableClassCheck = _clazz.enableClassCheck;

var lineStyleMixin = require("./mixin/lineStyle");

var areaStyleMixin = require("./mixin/areaStyle");

var textStyleMixin = require("./mixin/textStyle");

var itemStyleMixin = require("./mixin/itemStyle");

/*
* 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.
*/

/**
 * @module echarts/model/Model
 */
var mixin = zrUtil.mixin;
var inner = makeInner();
/**
 * @alias module:echarts/model/Model
 * @constructor
 * @param {Object} [option]
 * @param {module:echarts/model/Model} [parentModel]
 * @param {module:echarts/model/Global} [ecModel]
 */

function Model(option, parentModel, ecModel) {
  /**
   * @type {module:echarts/model/Model}
   * @readOnly
   */
  this.parentModel = parentModel;
  /**
   * @type {module:echarts/model/Global}
   * @readOnly
   */

  this.ecModel = ecModel;
  /**
   * @type {Object}
   * @protected
   */

  this.option = option; // Simple optimization
  // if (this.init) {
  //     if (arguments.length <= 4) {
  //         this.init(option, parentModel, ecModel, extraOpt);
  //     }
  //     else {
  //         this.init.apply(this, arguments);
  //     }
  // }
}

Model.prototype = {
  constructor: Model,

  /**
   * Model 的初始化函数
   * @param {Object} option
   */
  init: null,

  /**
   * 从新的 Option merge
   */
  mergeOption: function (option) {
    zrUtil.merge(this.option, option, true);
  },

  /**
   * @param {string|Array.<string>} path
   * @param {boolean} [ignoreParent=false]
   * @return {*}
   */
  get: function (path, ignoreParent) {
    if (path == null) {
      return this.option;
    }

    return doGet(this.option, this.parsePath(path), !ignoreParent && getParent(this, path));
  },

  /**
   * @param {string} key
   * @param {boolean} [ignoreParent=false]
   * @return {*}
   */
  getShallow: function (key, ignoreParent) {
    var option = this.option;
    var val = option == null ? option : option[key];
    var parentModel = !ignoreParent && getParent(this, key);

    if (val == null && parentModel) {
      val = parentModel.getShallow(key);
    }

    return val;
  },

  /**
   * @param {string|Array.<string>} [path]
   * @param {module:echarts/model/Model} [parentModel]
   * @return {module:echarts/model/Model}
   */
  getModel: function (path, parentModel) {
    var obj = path == null ? this.option : doGet(this.option, path = this.parsePath(path));
    var thisParentModel;
    parentModel = parentModel || (thisParentModel = getParent(this, path)) && thisParentModel.getModel(path);
    return new Model(obj, parentModel, this.ecModel);
  },

  /**
   * If model has option
   */
  isEmpty: function () {
    return this.option == null;
  },
  restoreData: function () {},
  // Pending
  clone: function () {
    var Ctor = this.constructor;
    return new Ctor(zrUtil.clone(this.option));
  },
  setReadOnly: function (properties) {// clazzUtil.setReadOnly(this, properties);
  },
  // If path is null/undefined, return null/undefined.
  parsePath: function (path) {
    if (typeof path === 'string') {
      path = path.split('.');
    }

    return path;
  },

  /**
   * @param {Function} getParentMethod
   *        param {Array.<string>|string} path
   *        return {module:echarts/model/Model}
   */
  customizeGetParent: function (getParentMethod) {
    inner(this).getParent = getParentMethod;
  },
  isAnimationEnabled: function () {
    if (!env.node) {
      if (this.option.animation != null) {
        return !!this.option.animation;
      } else if (this.parentModel) {
        return this.parentModel.isAnimationEnabled();
      }
    }
  }
};

function doGet(obj, pathArr, parentModel) {
  for (var i = 0; i < pathArr.length; i++) {
    // Ignore empty
    if (!pathArr[i]) {
      continue;
    } // obj could be number/string/... (like 0)


    obj = obj && typeof obj === 'object' ? obj[pathArr[i]] : null;

    if (obj == null) {
      break;
    }
  }

  if (obj == null && parentModel) {
    obj = parentModel.get(pathArr);
  }

  return obj;
} // `path` can be null/undefined


function getParent(model, path) {
  var getParentMethod = inner(model).getParent;
  return getParentMethod ? getParentMethod.call(model, path) : model.parentModel;
} // Enable Model.extend.


enableClassExtend(Model);
enableClassCheck(Model);
mixin(Model, lineStyleMixin);
mixin(Model, areaStyleMixin);
mixin(Model, textStyleMixin);
mixin(Model, itemStyleMixin);
var _default = Model;
module.exports = _default;