substance/model/CustomSelection.js

Substance is a JavaScript library for web-based content editing. It provides building blocks for realizing custom text editors and web-based publishing systems.

import { cloneDeep, isEqual } from '../util'
import Selection from './Selection'

class CustomSelection extends Selection {

  constructor(customType, data, surfaceId) {
    super()

    if (arguments.length === 1) {
      let _data = arguments[0]
      customType = _data.customType
      data = _data.data
      surfaceId = _data.surfaceId
    }

    this.customType = customType;
    this.data = data || {};
    this.surfaceId = surfaceId;
  }

  isCustomSelection() {
    return true;
  }

  getType() {
    return 'custom';
  }

  getCustomType() {
    return this.customType;
  }

  toJSON() {
    return {
      type: 'custom',
      customType: this.customType,
      data: cloneDeep(this.data),
      surfaceId: this.surfaceId
    };
  }

  toString() {
    /* istanbul ignore next */
    return [
      'CustomSelection(',
      this.customType,', ',
      JSON.stringify(this.data),
      ")"
    ].join('');
  }

  equals(other) {
    return (
      Selection.prototype.equals.call(this, other) &&
      other.isCustomSelection() &&
      isEqual(this.data, other.data)
    );
  }

  _clone() {
    return new CustomSelection(this)
  }
}

CustomSelection.prototype._isCustomSelection = true

CustomSelection.fromJSON = function(json) {
  return new CustomSelection(json);
}

export default CustomSelection