analytics/webcontent/bi/js/gemini/dashboard/util/TextFitUtil.js

'use strict';

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

/**
* Licensed Materials - Property of IBM
* IBM Cognos Products: BI Cloud (C) Copyright IBM Corp. 2018, 2019
* US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
*/

define(['textfit'], function (textfit) {

	/**
  *	This class is to wrap original TextFit with error handling
  *
  * @class TextFitUtil
  */
	var TextFitUtil = function () {
		function TextFitUtil() {
			_classCallCheck(this, TextFitUtil);
		}

		/**
   * This method adds addition error handling to TextFit
   * If TextFit throws errors, force the inner span font size to 0.1px
   *
   * @static
   * @param {*} el DOM single element
   * @param {*} [options={}] options to extend default TextFit options
   * @returns
   * @memberof TextFitUtil
   */
		TextFitUtil.fillText = function fillText(el) {
			var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

			try {
				textfit(el, options);
			} catch (e) {
				this._forceFitText(el);
			}
		};

		/**
   * This method is to set font size of inner span to 0.1px
   * If there is no span, add one and set the font size to 0.1px
   * If a span with class textFitted, set the font size to 0.1px
   * @static
   * @param {*} el DOM single element
   * @memberof TextFitUtil
   */


		TextFitUtil._forceFitText = function _forceFitText(el) {
			var originalHTML = el.innerHTML;
			var innerSpan = el.getElementsByClassName('textFitted');
			var defaultFontSize = '0.1px'; // Can't be 0 because IE freaks out.

			if (innerSpan[0]) {
				return innerSpan[0].style.fontSize = defaultFontSize;
			}

			innerSpan = document.createElement('span');
			innerSpan.className = 'textFitted';
			// Inline block ensure it takes on the size of its contents, even if they are enclosed
			// in other tags like <p>
			innerSpan.style['display'] = 'inline-block';
			innerSpan.innerHTML = originalHTML;
			innerSpan.style.fontSize = defaultFontSize;
			el.innerHTML = '';
			el.appendChild(innerSpan);
		};

		_createClass(TextFitUtil, null, [{
			key: '_textFit',

			// setter for mocking unit tests :(
			set: function set(func) {
				textfit = func;
			}
		}]);

		return TextFitUtil;
	}();

	return TextFitUtil;
});
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