exceljs/lib/xlsx/xform/style/font-xform.js

Excel Workbook Manager - Read and Write xlsx and csv Files.

'use strict';

const ColorXform = require('./color-xform');
const BooleanXform = require('../simple/boolean-xform');
const IntegerXform = require('../simple/integer-xform');
const StringXform = require('../simple/string-xform');
const UnderlineXform = require('./underline-xform');

const _ = require('../../../utils/under-dash');
const BaseXform = require('../base-xform');

// Font encapsulates translation from font model to xlsx
class FontXform extends BaseXform {
  constructor(options) {
    super();

    this.options = options || FontXform.OPTIONS;

    this.map = {
      b: {prop: 'bold', xform: new BooleanXform({tag: 'b', attr: 'val'})},
      i: {prop: 'italic', xform: new BooleanXform({tag: 'i', attr: 'val'})},
      u: {prop: 'underline', xform: new UnderlineXform()},
      charset: {prop: 'charset', xform: new IntegerXform({tag: 'charset', attr: 'val'})},
      color: {prop: 'color', xform: new ColorXform()},
      condense: {prop: 'condense', xform: new BooleanXform({tag: 'condense', attr: 'val'})},
      extend: {prop: 'extend', xform: new BooleanXform({tag: 'extend', attr: 'val'})},
      family: {prop: 'family', xform: new IntegerXform({tag: 'family', attr: 'val'})},
      outline: {prop: 'outline', xform: new BooleanXform({tag: 'outline', attr: 'val'})},
      vertAlign: {prop: 'vertAlign', xform: new StringXform({tag: 'vertAlign', attr: 'val'})},
      scheme: {prop: 'scheme', xform: new StringXform({tag: 'scheme', attr: 'val'})},
      shadow: {prop: 'shadow', xform: new BooleanXform({tag: 'shadow', attr: 'val'})},
      strike: {prop: 'strike', xform: new BooleanXform({tag: 'strike', attr: 'val'})},
      sz: {prop: 'size', xform: new IntegerXform({tag: 'sz', attr: 'val'})},
    };
    this.map[this.options.fontNameTag] = {prop: 'name', xform: new StringXform({tag: this.options.fontNameTag, attr: 'val'})};
  }

  get tag() {
    return this.options.tagName;
  }

  render(xmlStream, model) {
    const {map} = this;

    xmlStream.openNode(this.options.tagName);
    _.each(this.map, (defn, tag) => {
      map[tag].xform.render(xmlStream, model[defn.prop]);
    });
    xmlStream.closeNode();
  }

  parseOpen(node) {
    if (this.parser) {
      this.parser.parseOpen(node);
      return true;
    }
    if (this.map[node.name]) {
      this.parser = this.map[node.name].xform;
      return this.parser.parseOpen(node);
    }
    switch (node.name) {
      case this.options.tagName:
        this.model = {};
        return true;
      default:
        return false;
    }
  }

  parseText(text) {
    if (this.parser) {
      this.parser.parseText(text);
    }
  }

  parseClose(name) {
    if (this.parser && !this.parser.parseClose(name)) {
      const item = this.map[name];
      if (this.parser.model) {
        this.model[item.prop] = this.parser.model;
      }
      this.parser = undefined;
      return true;
    }
    switch (name) {
      case this.options.tagName:
        return false;
      default:
        return true;
    }
  }
}

FontXform.OPTIONS = {
  tagName: 'font',
  fontNameTag: 'name',
};

module.exports = FontXform;