remove useless feature with new browsers

src/common/browser.js

@@ -10,36 +10,16 @@ import 'pathseg';
 
 import { NS } from './namespaces.js';
 
-const supportsSVG_ = (function () {
-  return Boolean(document.createElementNS && document.createElementNS(NS.SVG, 'svg').createSVGRect);
-}());
-
-/**
- * @function module:browser.supportsSvg
- * @returns {boolean}
-*/
-export const supportsSvg = () => supportsSVG_;
-
 const { userAgent } = navigator;
 const svg = document.createElementNS(NS.SVG, 'svg');
 
 // Note: Browser sniffing should only be used if no other detection method is possible
-const isOpera_ = Boolean(window.opera);
 const isWebkit_ = userAgent.includes('AppleWebKit');
 const isGecko_ = userAgent.includes('Gecko/');
 const isChrome_ = userAgent.includes('Chrome/');
-const isWindows_ = userAgent.includes('Windows');
 const isMac_ = userAgent.includes('Macintosh');
 const isTouch_ = 'ontouchstart' in window;
 
-const supportsSelectors_ = (function () {
-  return Boolean(svg.querySelector);
-}());
-
-const supportsXpath_ = (function () {
-  return Boolean(document.evaluate);
-}());
-
 // segList functions (for FF1.5 and 2.0)
 const supportsPathReplaceItem_ = (function () {
   const path = document.createElementNS(NS.SVG, 'path');
@@ -113,11 +93,6 @@ const supportsHVLineContainerBBox_ = (function () {
   return (bbox.width === 15);
 }());
 
-const supportsEditableText_ = (function () {
-// TODO: Find better way to check support for this
-  return isOpera_;
-}());
-
 const supportsNonScalingStroke_ = (function () {
   const rect = document.createElementNS(NS.SVG, 'rect');
   rect.setAttribute('style', 'vector-effect:non-scaling-stroke');
@@ -146,11 +121,6 @@ let supportsNativeSVGTransformLists_ = (function () {
 
 // Public API
 
-/**
- * @function module:browser.isOpera
- * @returns {boolean}
-*/
-export const isOpera = () => isOpera_;
 /**
  * @function module:browser.isWebkit
  * @returns {boolean}
@@ -166,11 +136,7 @@ export const isGecko = () => isGecko_;
  * @returns {boolean}
 */
 export const isChrome = () => isChrome_;
-/**
+
- * @function module:browser.isWindows
- * @returns {boolean}
-*/
-export const isWindows = () => isWindows_;
 /**
  * @function module:browser.isMac
  * @returns {boolean}
@@ -182,18 +148,6 @@ export const isMac = () => isMac_;
 */
 export const isTouch = () => isTouch_;
 
-/**
- * @function module:browser.supportsSelectors
- * @returns {boolean}
-*/
-export const supportsSelectors = () => supportsSelectors_;
-
-/**
- * @function module:browser.supportsXpath
- * @returns {boolean}
-*/
-export const supportsXpath = () => supportsXpath_;
-
 /**
  * @function module:browser.supportsPathReplaceItem
  * @returns {boolean}
@@ -224,12 +178,6 @@ export const supportsHVLineContainerBBox = () => supportsHVLineContainerBBox_;
 */
 export const supportsGoodTextCharPos = () => supportsGoodTextCharPos_;
 
-/**
-* @function module:browser.supportsEditableText
- * @returns {boolean}
-*/
-export const supportsEditableText = () => supportsEditableText_;
-
 /**
 * @function module:browser.supportsNonScalingStroke
 * @returns {boolean}

src/svgcanvas/utilities.js

@@ -13,8 +13,7 @@ import {
   hasMatrixTransform, transformListToTransform, transformBox
 } from './math.js';
 import {
-  isWebkit, supportsHVLineContainerBBox, supportsPathBBox, supportsXpath,
+  isWebkit, supportsHVLineContainerBBox, supportsPathBBox
-  supportsSelectors
 } from '../common/browser.js';
 import { getClosest, mergeDeep } from '../editor/components/jgraduate/Util.js';
 
@@ -27,8 +26,6 @@ const visElemsArr = visElems.split(',');
 // const hidElems = 'defs,desc,feGaussianBlur,filter,linearGradient,marker,mask,metadata,pattern,radialGradient,stop,switch,symbol,title,textPath';
 
 let editorContext_ = null;
-let domdoc_ = null;
-let domcontainer_ = null;
 let svgroot_ = null;
 
 /**
@@ -92,8 +89,6 @@ let svgroot_ = null;
 */
 export const init = function (editorContext) {
   editorContext_ = editorContext;
-  domdoc_ = editorContext.getDOMDocument();
-  domcontainer_ = editorContext.getDOMContainer();
   svgroot_ = editorContext.getSVGRoot();
 };
 
@@ -1229,26 +1224,10 @@ export const getFeGaussianBlur = function (ele) {
 * @param {string} id - String with the element's new ID
 * @returns {?Element}
 */
-export const getElem = (supportsSelectors())
+export const getElem = (id) => {
-  ? function (id) {
+  // querySelector lookup
-    // querySelector lookup
+  return svgroot_.querySelector('#' + id);
-    return svgroot_.querySelector('#' + id);
+};
-  }
-  : supportsXpath()
-    ? function (id) {
-      // xpath lookup
-      return domdoc_.evaluate(
-        'svg:svg[@id="svgroot"]//svg:*[@id="' + id + '"]',
-        domcontainer_,
-        function () { return NS.SVG; },
-        9,
-        null
-      ).singleNodeValue;
-    }
-    : function (id) {
-      // jQuery lookup: twice as slow as xpath in FF
-      return svgroot_.querySelector(`[id=${id}]`);
-    };
 
 /**
 * Assigns multiple attributes to an element.