From 3ec37e2c669f1417ae0d549b21f98a93d044f08b Mon Sep 17 00:00:00 2001
From: Hiroyasu Nishiyama <hiroyasu.nishiyama.uq@hitachi.com>
Date: Thu, 11 Feb 2021 23:10:33 +0900
Subject: [PATCH] make flow download code separate utility instead of polyfill

---
 .../editor-client/src/js/polyfills.js         | 27 -----------------
 .../editor-client/src/js/ui/clipboard.js      | 30 ++++++++++++++-----
 2 files changed, 23 insertions(+), 34 deletions(-)

diff --git a/packages/node_modules/@node-red/editor-client/src/js/polyfills.js b/packages/node_modules/@node-red/editor-client/src/js/polyfills.js
index b8f36af69..100cd4913 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/polyfills.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/polyfills.js
@@ -52,32 +52,5 @@
             Set.prototype = _Set.prototype;
             Set.prototype.constructor = Set;
         }
-
-        if (window.navigator.msSaveBlob) {
-            // IE does not support data uri scheme for downloading data
-            window.addEventListener("click", function (ev) {
-                var tgt = ev.target;
-                if ((tgt.tagName === "A") &&
-                    tgt.hasAttribute("download") &&
-                    tgt.hasAttribute("href")) {
-                    // partial support of data uri downloading
-                    var filename = tgt.getAttribute("download");
-                    var dataUri = tgt.getAttribute("href");
-                    var match = /^data:([^,]+),(.*)/.exec(dataUri);
-                    if (match) {
-                        ev.preventDefault();
-                        var enc = match[1];
-                        var data = decodeURIComponent(match[2]);
-                        var blob = new Blob([data], {
-                            type: enc,
-                        });
-                        navigator.msSaveBlob(blob, filename);
-                    }
-                    else {
-                        console.log("download not supported:", tgt);
-                    }
-                }
-            });
-        }
     }
 })();
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/clipboard.js b/packages/node_modules/@node-red/editor-client/src/js/ui/clipboard.js
index 4ed618f6d..d39240938 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/clipboard.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/clipboard.js
@@ -30,6 +30,27 @@ RED.clipboard = (function() {
 
     var pendingImportConfig;
 
+
+    function downloadData(file, data) {
+        if (window.navigator.msSaveBlob) {
+            // IE11 workaround
+            // IE does not support data uri scheme for downloading data
+            var blob = new Blob([data], {
+                type: "data:text/plain;charset=utf-8"
+            });
+            navigator.msSaveBlob(blob, file);
+        }
+        else {
+            var element = document.createElement('a');
+            element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(data));
+            element.setAttribute('download', file);
+            element.style.display = 'none';
+            document.body.appendChild(element);
+            element.click();
+            document.body.removeChild(element);
+        }
+    }
+
     function setupDialogs() {
         dialog = $('<div id="red-ui-clipboard-dialog" class="hide"><form class="dialog-form form-horizontal"></form></div>')
             .appendTo("#red-ui-editor")
@@ -56,13 +77,8 @@ RED.clipboard = (function() {
                         class: "primary",
                         text: RED._("clipboard.download"),
                         click: function() {
-                            var element = document.createElement('a');
-                            element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent($("#red-ui-clipboard-dialog-export-text").val()));
-                            element.setAttribute('download', "flows.json");
-                            element.style.display = 'none';
-                            document.body.appendChild(element);
-                            element.click();
-                            document.body.removeChild(element);
+                            var data = $("#red-ui-clipboard-dialog-export-text").val();
+                            downloadData("flows.json", data);
                             $( this ).dialog( "close" );
                         }
                     },