{"ast":null,"code":"/**\r\n * @author NHN Ent. FE Development Team <dl_javascript@nhn.com>\r\n * @fileoverview Add filter module\r\n */\nimport { isUndefined, extend, forEach, filter } from 'tui-code-snippet';\nimport { Promise } from '../util';\nimport fabric from 'fabric';\nimport Component from '../interface/component';\nimport Mask from '../extension/mask';\nimport { rejectMessages, componentNames } from '../consts';\nimport Sharpen from '../extension/sharpen';\nimport Emboss from '../extension/emboss';\nimport ColorFilter from '../extension/colorFilter';\nconst {\n  filters\n} = fabric.Image;\nfilters.Mask = Mask;\nfilters.Sharpen = Sharpen;\nfilters.Emboss = Emboss;\nfilters.ColorFilter = ColorFilter;\n/**\r\n * Filter\r\n * @class Filter\r\n * @param {Graphics} graphics - Graphics instance\r\n * @extends {Component}\r\n * @ignore\r\n */\n\nclass Filter extends Component {\n  constructor(graphics) {\n    super(componentNames.FILTER, graphics);\n  }\n  /**\r\n   * Add filter to source image (a specific filter is added on fabric.js)\r\n   * @param {string} type - Filter type\r\n   * @param {Object} [options] - Options of filter\r\n   * @returns {Promise}\r\n   */\n\n\n  add(type, options) {\n    return new Promise((resolve, reject) => {\n      const sourceImg = this._getSourceImage();\n\n      const canvas = this.getCanvas();\n\n      let imgFilter = this._getFilter(sourceImg, type);\n\n      if (!imgFilter) {\n        imgFilter = this._createFilter(sourceImg, type, options);\n      }\n\n      if (!imgFilter) {\n        reject(rejectMessages.invalidParameters);\n      }\n\n      this._changeFilterValues(imgFilter, options);\n\n      this._apply(sourceImg, () => {\n        canvas.renderAll();\n        resolve({\n          type,\n          action: 'add',\n          options\n        });\n      });\n    });\n  }\n  /**\r\n   * Remove filter to source image\r\n   * @param {string} type - Filter type\r\n   * @returns {Promise}\r\n   */\n\n\n  remove(type) {\n    return new Promise((resolve, reject) => {\n      const sourceImg = this._getSourceImage();\n\n      const canvas = this.getCanvas();\n      const options = this.getOptions(type);\n\n      if (!sourceImg.filters.length) {\n        reject(rejectMessages.unsupportedOperation);\n      }\n\n      this._removeFilter(sourceImg, type);\n\n      this._apply(sourceImg, () => {\n        canvas.renderAll();\n        resolve({\n          type,\n          action: 'remove',\n          options\n        });\n      });\n    });\n  }\n  /**\r\n   * Whether this has the filter or not\r\n   * @param {string} type - Filter type\r\n   * @returns {boolean} true if it has the filter\r\n   */\n\n\n  hasFilter(type) {\n    return !!this._getFilter(this._getSourceImage(), type);\n  }\n  /**\r\n   * Get a filter options\r\n   * @param {string} type - Filter type\r\n   * @returns {Object} filter options or null if there is no that filter\r\n   */\n\n\n  getOptions(type) {\n    const sourceImg = this._getSourceImage();\n\n    const imgFilter = this._getFilter(sourceImg, type);\n\n    if (!imgFilter) {\n      return null;\n    }\n\n    return extend({}, imgFilter.options);\n  }\n  /**\r\n   * Change filter values\r\n   * @param {Object} imgFilter object of filter\r\n   * @param {Object} options object\r\n   * @private\r\n   */\n\n\n  _changeFilterValues(imgFilter, options) {\n    forEach(options, (value, key) => {\n      if (!isUndefined(imgFilter[key])) {\n        imgFilter[key] = value;\n      }\n    });\n    forEach(imgFilter.options, (value, key) => {\n      if (!isUndefined(options[key])) {\n        imgFilter.options[key] = options[key];\n      }\n    });\n  }\n  /**\r\n   * Apply filter\r\n   * @param {fabric.Image} sourceImg - Source image to apply filter\r\n   * @param {function} callback - Executed function after applying filter\r\n   * @private\r\n   */\n\n\n  _apply(sourceImg, callback) {\n    sourceImg.filters.push();\n    const result = sourceImg.applyFilters();\n\n    if (result) {\n      callback();\n    }\n  }\n  /**\r\n   * Get source image on canvas\r\n   * @returns {fabric.Image} Current source image on canvas\r\n   * @private\r\n   */\n\n\n  _getSourceImage() {\n    return this.getCanvasImage();\n  }\n  /**\r\n   * Create filter instance\r\n   * @param {fabric.Image} sourceImg - Source image to apply filter\r\n   * @param {string} type - Filter type\r\n   * @param {Object} [options] - Options of filter\r\n   * @returns {Object} Fabric object of filter\r\n   * @private\r\n   */\n\n\n  _createFilter(sourceImg, type, options) {\n    let filterObj; // capitalize first letter for matching with fabric image filter name\n\n    const fabricType = this._getFabricFilterType(type);\n\n    const ImageFilter = fabric.Image.filters[fabricType];\n\n    if (ImageFilter) {\n      filterObj = new ImageFilter(options);\n      filterObj.options = options;\n      sourceImg.filters.push(filterObj);\n    }\n\n    return filterObj;\n  }\n  /**\r\n   * Get applied filter instance\r\n   * @param {fabric.Image} sourceImg - Source image to apply filter\r\n   * @param {string} type - Filter type\r\n   * @returns {Object} Fabric object of filter\r\n   * @private\r\n   */\n\n\n  _getFilter(sourceImg, type) {\n    let imgFilter = null;\n\n    if (sourceImg) {\n      const fabricType = this._getFabricFilterType(type);\n\n      const {\n        length\n      } = sourceImg.filters;\n      let item, i;\n\n      for (i = 0; i < length; i += 1) {\n        item = sourceImg.filters[i];\n\n        if (item.type === fabricType) {\n          imgFilter = item;\n          break;\n        }\n      }\n    }\n\n    return imgFilter;\n  }\n  /**\r\n   * Remove applied filter instance\r\n   * @param {fabric.Image} sourceImg - Source image to apply filter\r\n   * @param {string} type - Filter type\r\n   * @private\r\n   */\n\n\n  _removeFilter(sourceImg, type) {\n    const fabricType = this._getFabricFilterType(type);\n\n    sourceImg.filters = filter(sourceImg.filters, value => value.type !== fabricType);\n  }\n  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* @author NHN Ent. FE Development Team <dl_javascript@nhn.com>\r\n * @fileoverview Add filter module\r\n */\r\nimport { isUndefined, extend, forEach, filter } from 'tui-code-snippet';\r\nimport { Promise } from '../util';\r\nimport fabric from 'fabric';\r\nimport Component from '../interface/component';\r\nimport Mask from '../extension/mask';\r\nimport { rejectMessages, componentNames } from '../consts';\r\nimport Sharpen from '../extension/sharpen';\r\nimport Emboss from '../extension/emboss';\r\nimport ColorFilter from '../extension/colorFilter';\r\n\r\nconst { filters } = fabric.Image;\r\nfilters.Mask = Mask;\r\nfilters.Sharpen = Sharpen;\r\nfilters.Emboss = Emboss;\r\nfilters.ColorFilter = ColorFilter;\r\n\r\n/**\r\n * Filter\r\n * @class Filter\r\n * @param {Graphics} graphics - Graphics instance\r\n * @extends {Component}\r\n * @ignore\r\n */\r\nclass Filter extends Component {\r\n  constructor(graphics) {\r\n    super(componentNames.FILTER, graphics);\r\n  }\r\n\r\n  /**\r\n   * Add filter to source image (a specific filter is added on fabric.js)\r\n   * @param {string} type - Filter type\r\n   * @param {Object} [options] - Options of filter\r\n   * @returns {Promise}\r\n   */\r\n  add(type, options) {\r\n    return new Promise((resolve, reject) => {\r\n      const sourceImg = this._getSourceImage();\r\n      const canvas = this.getCanvas();\r\n      let imgFilter = this._getFilter(sourceImg, type);\r\n      if (!imgFilter) {\r\n        imgFilter = this._createFilter(sourceImg, type, options);\r\n      }\r\n\r\n      if (!imgFilter) {\r\n        reject(rejectMessages.invalidParameters);\r\n      }\r\n\r\n      this._changeFilterValues(imgFilter, options);\r\n\r\n      this._apply(sourceImg, () => {\r\n        canvas.renderAll();\r\n        resolve({\r\n          type,\r\n          action: 'add',\r\n          options,\r\n        });\r\n      });\r\n    });\r\n  }\r\n\r\n  /**\r\n   * Remove filter to source image\r\n   * @param {string} type - Filter type\r\n   * @returns {Promise}\r\n   */\r\n  remove(type) {\r\n    return new Promise((resolve, reject) => {\r\n      const sourceImg = this._getSourceImage();\r\n      const canvas = this.getCanvas();\r\n      const options = this.getOptions(type);\r\n\r\n      if (!sourceImg.filters.length) {\r\n        reject(rejectMessages.unsupportedOperation);\r\n      }\r\n\r\n      this._removeFilter(sourceImg, type);\r\n\r\n      this._apply(sourceImg, () => {\r\n        canvas.renderAll();\r\n        resolve({\r\n          type,\r\n          action: 'remove',\r\n          options,\r\n        });\r\n      });\r\n    });\r\n  }\r\n\r\n  /**\r\n   * Whether this has the filter or not\r\n   * @param {string} type - Filter type\r\n   * @returns {boolean} true if it has the filter\r\n   */\r\n  hasFilter(type) {\r\n    return !!this._getFilter(this._getSourceImage(), type);\r\n  }\r\n\r\n  /**\r\n   * Get a filter options\r\n   * @param {string} type - Filter type\r\n   * @returns {Object} filter options or null if there is no that filter\r\n   */\r\n  getOptions(type) {\r\n    const sourceImg = this._getSourceImage();\r\n    const imgFilter = this._getFilter(sourceImg, type);\r\n    if (!imgFilter) {\r\n      return null;\r\n    }\r\n\r\n    return extend({}, imgFilter.options);\r\n  }\r\n\r\n  /**\r\n   * Change filter values\r\n   * @param {Object} imgFilter object of filter\r\n   * @param {Object} options object\r\n   * @private\r\n   */\r\n  _changeFilterValues(imgFilter, options) {\r\n    forEach(options, (value, key) => {\r\n      if (!isUndefined(imgFilter[key])) {\r\n        imgFilter[key] = value;\r\n      }\r\n    });\r\n    forEach(imgFilter.options, (value, key) => {\r\n      if (!isUndefined(options[key])) {\r\n        imgFilter.options[key] = options[key];\r\n      }\r\n    });\r\n  }\r\n\r\n  /**\r\n   * Apply filter\r\n   * @param {fabric.Image} sourceImg - Source image to apply filter\r\n   * @param {function} callback - Executed function after applying filter\r\n   * @private\r\n   */\r\n  _apply(sourceImg, callback) {\r\n    sourceImg.filters.push();\r\n    const result = sourceImg.applyFilters();\r\n    if (result) {\r\n      callback();\r\n    }\r\n  }\r\n\r\n  /**\r\n   * Get source image on canvas\r\n   * @returns {fabric.Image} Current source image on canvas\r\n   * @private\r\n   */\r\n  _getSourceImage() {\r\n    return this.getCanvasImage();\r\n  }\r\n\r\n  /**\r\n   * Create filter instance\r\n   * @param {fabric.Image} sourceImg - Source image to apply filter\r\n   * @param {string} type - Filter type\r\n   * @param {Object} [options] - Options of filter\r\n   * @returns {Object} Fabric object of filter\r\n   * @private\r\n   */\r\n  _createFilter(sourceImg, type, options) {\r\n    let filterObj;\r\n    // capitalize first letter for matching with fabric image filter name\r\n    const fabricType = this._getFabricFilterType(type);\r\n    const ImageFilter = fabric.Image.filters[fabricType];\r\n    if (ImageFilter) {\r\n      filterObj = new ImageFilter(options);\r\n      filterObj.options = options;\r\n      sourceImg.filters.push(filterObj);\r\n    }\r\n\r\n    return filterObj;\r\n  }\r\n\r\n  /**\r\n   * Get applied filter instance\r\n   * @param {fabric.Image} sourceImg - Source image to apply filter\r\n   * @param {string} type - Filter type\r\n   * @returns {Object} Fabric object of filter\r\n   * @private\r\n   */\r\n  _getFilter(sourceImg, type) {\r\n    let imgFilter = null;\r\n\r\n    if (sourceImg) {\r\n      const fabricType = this._getFabricFilterType(type);\r\n      const { length } = sourceImg.filters;\r\n      let item, i;\r\n\r\n      for (i = 0; i < length; i += 1) {\r\n        item = sourceImg.filters[i];\r\n        if (item.type === fabricType) {\r\n          imgFilter = item;\r\n          break;\r\n        }\r\n      }\r\n    }\r\n\r\n    return imgFilter;\r\n  }\r\n\r\n  /**\r\n   * Remove applied filter instance\r\n   * @param {fabric.Image} sourceImg - Source image to apply filter\r\n   * @param {string} type - Filter type\r\n   * @private\r\n   */\r\n  _removeFilter(sourceImg, type) {\r\n    const fabricType = this._getFabricFilterType(type);\r\n    sourceImg.filters = filter(sourceImg.filters, (value) => value.type !== fabricType);\r\n  }\r\n\r\n  /**\r\n   * Change filter class name to fabric's, especially capitalizing first letter\r\n   * @param {string} type - 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