Cleanup old code that was there to support the Internet Explorer

draftlogs/7251_change.md

@@ -0,0 +1 @@
+ - Cleanup remaining code that was there to support the Internet Explorer [[#7251](https://github.com/plotly/plotly.js/pull/7251)]

src/components/modebar/buttons.js

@@ -51,11 +51,6 @@ modeBarButtons.toImage = {
 
         Lib.notifier(_(gd, 'Taking snapshot - this may take a few seconds'), 'long');
 
-        if(opts.format !== 'svg' && Lib.isIE()) {
-            Lib.notifier(_(gd, 'IE only supports svg.  Changing format to svg.'), 'long');
-            opts.format = 'svg';
-        }
-
         ['filename', 'width', 'height', 'scale'].forEach(function(key) {
             if(key in toImageButtonOptions) {
                 opts[key] = toImageButtonOptions[key];

src/css/_base.scss

@@ -27,9 +27,6 @@ a {
     @include vendor('user-select', none);
 }
 
-//Required for IE11. Other browsers set this by default.
-svg { overflow: hidden; }
-
 svg a { fill: $color-brand-primary; }
 svg a:hover { fill: #3c6dc5; }
 

src/lib/index.js

@@ -755,10 +755,6 @@ lib.containsAny = function(s, fragments) {
     return false;
 };
 
-lib.isIE = function() {
-    return typeof window.navigator.msSaveBlob !== 'undefined';
-};
-
 var IS_SAFARI_REGEX = /Version\/[\d\.]+.*Safari/;
 lib.isSafari = function() {
     return IS_SAFARI_REGEX.test(window.navigator.userAgent);

src/lib/search.js

@@ -64,7 +64,7 @@ exports.sorterDes = function(a, b) { return b - a; };
  */
 exports.distinctVals = function(valsIn) {
     var vals = valsIn.slice();  // otherwise we sort the original array...
-    vals.sort(exports.sorterAsc); // undefined listed in the end - also works on IE11
+    vals.sort(exports.sorterAsc); // undefined listed in the end
 
     var last;
     for(last = vals.length - 1; last > -1; last--) {

src/lib/supports_pixelated_image.js

@@ -19,7 +19,7 @@ function supportsPixelatedImage() {
     _supportsPixelated = false;
 
     // @see https://github.com/plotly/plotly.js/issues/6604
-    var unsupportedBrowser = Lib.isIE() || Lib.isSafari() || Lib.isIOS();
+    var unsupportedBrowser = Lib.isSafari() || Lib.isIOS();
 
     if(window.navigator.userAgent && !unsupportedBrowser) {
         var declarations = Array.from(constants.CSS_DECLARATIONS).reverse();

src/plots/plots.js

@@ -146,7 +146,7 @@ plots.addLinks = function(gd) {
 
     // If text's width is bigger than the layout
     // Check that text is a child node or document.body
-    // because otherwise IE/Edge might throw an exception
+    // because otherwise Edge might throw an exception
     // when calling getComputedTextLength().
     // Apparently offsetParent is null for invisibles.
     if(document.body.contains(text) && text.getComputedTextLength() >= (fullLayout.width - 20)) {

src/snapshot/download.js

@@ -32,15 +32,6 @@ function downloadImage(gd, opts) {
             reject(new Error('Snapshotting already in progress.'));
         }
 
-        // see comments within svgtoimg for additional
-        //   discussion of problems with IE
-        //   can now draw to canvas, but CORS tainted canvas
-        //   does not allow toDataURL
-        //   svg format will work though
-        if(Lib.isIE() && opts.format !== 'svg') {
-            reject(new Error(helpers.MSG_IE_BAD_FORMAT));
-        }
-
         if(_gd) _gd._snapshotInProgress = true;
         var promise = toImage(gd, opts);
 

src/snapshot/filesaver.js

@@ -23,16 +23,6 @@ function fileSaver(url, name, format) {
         var blob;
         var objectUrl;
 
-        // IE 10+ (native saveAs)
-        if(Lib.isIE()) {
-            // At this point we are only dealing with a decoded SVG as
-            // a data URL (since IE only supports SVG)
-            blob = helpers.createBlob(url, 'svg');
-            window.navigator.msSaveBlob(blob, name);
-            blob = null;
-            return resolve(name);
-        }
-
         if(canUseSaveLink) {
             blob = helpers.createBlob(url, format);
             objectUrl = helpers.createObjectURL(blob);

src/snapshot/helpers.js

@@ -63,5 +63,3 @@ function fixBinary(b) {
 }
 
 exports.IMAGE_URL_PREFIX = /^data:image\/\w+;base64,/;
-
-exports.MSG_IE_BAD_FORMAT = 'Sorry IE does not support downloading from canvas. Try {format:\'svg\'} instead.';

src/snapshot/svgtoimg.js

@@ -13,19 +13,6 @@ function svgToImg(opts) {
         var svg = opts.svg;
         var format = opts.format || 'png';
 
-        // IE only support svg
-        if(Lib.isIE() && format !== 'svg') {
-            var ieSvgError = new Error(helpers.MSG_IE_BAD_FORMAT);
-            reject(ieSvgError);
-            // eventually remove the ev
-            //  in favor of promises
-            if(!opts.promise) {
-                return ev.emit('error', ieSvgError);
-            } else {
-                return promise;
-            }
-        }
-
         var canvas = opts.canvas;
         var scale = opts.scale || 1;
         var w0 = opts.width || 300;

src/snapshot/tosvg.js

@@ -143,11 +143,6 @@ module.exports = function toSVG(gd, format, scale) {
             .attr('stroke-width', 0);
     }
 
-    // fix for IE namespacing quirk?
-    // http://stackoverflow.com/questions/19610089/unwanted-namespaces-on-svg-markup-when-using-xmlserializer-in-javascript-with-ie
-    svg.node().setAttributeNS(xmlnsNamespaces.xmlns, 'xmlns', xmlnsNamespaces.svg);
-    svg.node().setAttributeNS(xmlnsNamespaces.xmlns, 'xmlns:xlink', xmlnsNamespaces.xlink);
-
     if(format === 'svg' && scale) {
         svg.attr('width', scale * width);
         svg.attr('height', scale * height);
@@ -161,26 +156,5 @@ module.exports = function toSVG(gd, format, scale) {
     // Fix quotations around font strings and gradient URLs
     s = s.replace(DUMMY_REGEX, '\'');
 
-    // Do we need this process now that IE9 and IE10 are not supported?
-
-    // IE is very strict, so we will need to clean
-    //  svg with the following regex
-    //  yes this is messy, but do not know a better way
-    // Even with this IE will not work due to tainted canvas
-    //  see https://github.com/kangax/fabric.js/issues/1957
-    //      http://stackoverflow.com/questions/18112047/canvas-todataurl-working-in-all-browsers-except-ie10
-    // Leave here just in case the CORS/tainted IE issue gets resolved
-    if(Lib.isIE()) {
-        // replace double quote with single quote
-        s = s.replace(/"/gi, '\'');
-        // url in svg are single quoted
-        //   since we changed double to single
-        //   we'll need to change these to double-quoted
-        s = s.replace(/(\('#)([^']*)('\))/gi, '(\"#$2\")');
-        // font names with spaces will be escaped single-quoted
-        //   we'll need to change these to double-quoted
-        s = s.replace(/(\\')/gi, '\"');
-    }
-
     return s;
 };

tasks/test_syntax.js

@@ -90,23 +90,13 @@ function assertJasmineSuites() {
 
 /*
  * tests about the contents of source (and lib) files:
- * - check that we don't have any features that break in IE
  * - check that we don't use getComputedStyle unexpectedly
  * - check that require statements use lowercase (to match assertFileNames)
  *   or match the case of the source file
  */
 function assertSrcContents() {
     var logs = [];
 
-    // These are forbidden in IE *only in SVG* but since
-    // that's 99% of what we do here, we'll forbid them entirely
-    // until there's some HTML use case where we need them.
-    // (not sure what we'd do then, but we'd think of something!)
-    var IE_SVG_BLACK_LIST = ['innerHTML', 'parentElement', 'children'];
-
-    // Forbidden in IE in any context
-    var IE_BLACK_LIST = ['classList'];
-
     // require'd built-in modules
     var BUILTINS = ['events'];
 
@@ -122,28 +112,8 @@ function assertSrcContents() {
                 // look for .classList
                 if(node.type === 'MemberExpression') {
                     var source = node.source();
-                    var parts = source.split('.');
-                    var lastPart = parts[parts.length - 1];
-
-                    if(source === 'Math.sign') {
-                        logs.push(file + ' : contains Math.sign (IE failure)');
-                    } else if(source === 'window.getComputedStyle') {
+                    if(source === 'window.getComputedStyle') {
                         getComputedStyleCnt++;
-                    } else if(IE_BLACK_LIST.indexOf(lastPart) !== -1) {
-                        logs.push(file + ' : contains .' + lastPart + ' (IE failure)');
-                    } else if(IE_SVG_BLACK_LIST.indexOf(lastPart) !== -1) {
-                        // add special case for sunburst, icicle and treemap where we use 'children'
-                        // off the d3-hierarchy output
-                        var dirParts = path.dirname(file).split(path.sep);
-                        var filename = dirParts[dirParts.length - 1];
-                        var isSunburstOrIcicleOrTreemap =
-                            filename === 'sunburst' ||
-                            filename === 'icicle' ||
-                            filename === 'treemap';
-                        var isLinkedToObject = ['pt', 'd', 'parent', 'node'].indexOf(parts[parts.length - 2]) !== -1;
-                        if(!(isSunburstOrIcicleOrTreemap && isLinkedToObject)) {
-                            logs.push(file + ' : contains .' + lastPart + ' (IE failure in SVG)');
-                        }
                     }
                 } else if(node.type === 'Identifier' && node.source() === 'getComputedStyle') {
                     if(node.parent.source() !== 'window.getComputedStyle') {

test/jasmine/karma.conf.js

@@ -118,7 +118,6 @@ if(isFullSuite) {
 }
 
 var pathToCustomMatchers = path.join(__dirname, 'assets', 'custom_matchers.js');
-var pathToUnpolyfill = path.join(__dirname, 'assets', 'unpolyfill.js');
 var pathToSaneTopojsonDist = path.join(__dirname, '..', '..', 'node_modules', 'sane-topojson', 'dist');
 var pathToMathJax2 = path.join(__dirname, '..', '..', 'node_modules', 'mathjax-v2');
 var pathToMathJax3 = path.join(__dirname, '..', '..', 'node_modules', 'mathjax-v3');
@@ -189,7 +188,6 @@ func.defaultConfig = {
     // N.B. the rest of this field is filled below
     files: [
         pathToCustomMatchers,
-        pathToUnpolyfill,
         // available to fetch from /base/node_modules/mathjax-v2/
         // more info: http://karma-runner.github.io/3.0/config/files.html
         {pattern: pathToMathJax2 + '/**', included: false, watched: false, served: true},

test/jasmine/tests/download_test.js

@@ -86,54 +86,6 @@ describe('Plotly.downloadImage', function() {
         })
         .then(done, done.fail);
     }, LONG_TIMEOUT_INTERVAL);
-
-    it('should produce the right SVG output in IE', function(done) {
-        // mock up IE behavior
-        spyOn(Lib, 'isIE').and.callFake(function() { return true; });
-        spyOn(slzProto, 'serializeToString').and.callFake(function() {
-            return serializeToString.apply(this, arguments)
-                .replace(/(\(#)([^")]*)(\))/gi, '(\"#$2\")');
-        });
-        var savedBlob;
-        window.navigator.msSaveBlob = function(blob) { savedBlob = blob; };
-
-        var expectedStart = '<svg class=\'main-svg\' xmlns=\'http://www.w3.org/2000/svg\' xmlns:xlink=\'http://www.w3.org/1999/xlink\'';
-        var plotClip = /clip-path='url\("#clip[0-9a-f]{6}xyplot"\)/;
-        var legendClip = /clip-path=\'url\("#legend[0-9a-f]{6}"\)/;
-
-        Plotly.newPlot(gd, textchartMock.data, textchartMock.layout)
-        .then(function(gd) {
-            savedBlob = undefined;
-            return Plotly.downloadImage(gd, {
-                format: 'svg',
-                height: 300,
-                width: 300,
-                filename: 'plotly_download'
-            });
-        })
-        .then(function() {
-            if(savedBlob === undefined) {
-                fail('undefined saveBlob');
-            }
-
-            return new Promise(function(resolve, reject) {
-                var reader = new FileReader();
-                reader.onloadend = function() {
-                    var res = reader.result;
-
-                    expect(res.substr(0, expectedStart.length)).toBe(expectedStart);
-                    expect(res.match(plotClip)).not.toBe(null);
-                    expect(res.match(legendClip)).not.toBe(null);
-
-                    resolve();
-                };
-                reader.onerror = function(e) { reject(e); };
-
-                reader.readAsText(savedBlob);
-            });
-        })
-        .then(done, done.fail);
-    }, LONG_TIMEOUT_INTERVAL);
 });
 
 function downloadTest(gd, format) {

test/jasmine/tests/lib_test.js

@@ -1853,9 +1853,7 @@ describe('Test lib.js:', function() {
                 -Number.MAX_VALUE, -Number.MIN_VALUE
             ];
 
-            if(!Lib.isIE()) {
-                vals.push(Number.EPSILON, -Number.EPSILON);
-            }
+            vals.push(Number.EPSILON, -Number.EPSILON);
 
             vals.forEach(function(v) {
                 expect(Lib.cleanNumber(v)).toBe(v);

test/jasmine/tests/svg_text_utils_test.js

@@ -349,28 +349,6 @@ describe('svg+text utils', function() {
             expect(i).toBe(355);
         });
 
-        it('decodes arbitrary decimal and hex number entities (IE case)', function() {
-            // IE does not have String.fromCodePoint
-            String.fromCodePoint = undefined;
-            expect(String.fromCodePoint).toBeUndefined();
-
-            var i = 0;
-            for(var n = 33; n < 0x10FFFF; n = Math.round(n * 1.03)) {
-                var node = mockTextSVGElement(
-                    '&#x' + n.toString(16) +
-                    '; = &#' + n.toString() +
-                    '; = &#x' + n.toString(16).toUpperCase() + ';'
-                );
-                var char = stringFromCodePoint(n);
-                expect(node.text()).toBe(char + ' = ' + char + ' = ' + char, n);
-                i++;
-            }
-            // not really necessary to assert this, but we tested  355 characters,
-            // weighted toward the low end but continuing all the way to the
-            // end of the unicode definition
-            expect(i).toBe(355);
-        });
-
         it('does not decode entities prematurely', function() {
             var testCases = [
                 '&lt;b>not bold</b&gt;',