From abb8a45226f2fb8b9f92f442dc4ae14907b8558b Mon Sep 17 00:00:00 2001
From: Juanjo Diaz <juanjo.diazmo@gmail.com>
Date: Tue, 7 Jan 2020 15:12:59 +0100
Subject: [PATCH] Fix constructor for Firefox

---
 core/rfb.js             |  7 ++++++-
 tests/test.clipboard.js | 14 ++++++++++++--
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/core/rfb.js b/core/rfb.js
index 0c8408f0..e6f9e9ae 100644
--- a/core/rfb.js
+++ b/core/rfb.js
@@ -2235,7 +2235,12 @@ export default class RFB extends EventTargetMixin {
             if (Clipboard.isSupported) {
                 const clipboardData = new DataTransfer();
                 clipboardData.setData("text/plain", text);
-                this._canvas.dispatchEvent(new ClipboardEvent('copy', { clipboardData }));
+                const clipboardEvent = new ClipboardEvent('paste', { clipboardData });
+                // Force initialization since the constructor is broken in Firefox
+                if (!clipboardEvent.clipboardData.items.length) {
+                    clipboardEvent.clipboardData.items.add(text, "text/plain");
+                }
+                this._canvas.dispatchEvent(clipboardEvent);
             }
 
         } else {
diff --git a/tests/test.clipboard.js b/tests/test.clipboard.js
index ada9b8b6..2ef00574 100644
--- a/tests/test.clipboard.js
+++ b/tests/test.clipboard.js
@@ -31,7 +31,12 @@ describe('Automatic Clipboard Sync', function () {
         if (Clipboard.isSupported) {
             const clipboardData = new DataTransfer();
             clipboardData.setData("text/plain", text);
-            clipboard._handleCopy(new ClipboardEvent('paste', { clipboardData }));
+            const clipboardEvent = new ClipboardEvent('paste', { clipboardData });
+            // Force initialization since the constructor is broken in Firefox
+            if (!clipboardEvent.clipboardData.items.length) {
+                clipboardEvent.clipboardData.items.add(text, "text/plain");
+            }
+            clipboard._handleCopy(clipboardEvent);
             if (navigator.clipboard.writeText) {
                 expect(navigator.clipboard.writeText).to.have.been.calledWith(text);
             }
@@ -45,7 +50,12 @@ describe('Automatic Clipboard Sync', function () {
         if (Clipboard.isSupported) {
             const clipboardData = new DataTransfer();
             clipboardData.setData("text/plain", text);
-            clipboard._handlePaste(new ClipboardEvent('paste', { clipboardData }));
+            const clipboardEvent = new ClipboardEvent('paste', { clipboardData });
+            // Force initialization since the constructor is broken in Firefox
+            if (!clipboardEvent.clipboardData.items.length) {
+                clipboardEvent.clipboardData.items.add(text, "text/plain");
+            }
+            clipboard._handlePaste(clipboardEvent);
             if (navigator.clipboard.readText) {
                 expect(navigator.clipboard.readText).to.have.been.called;
             }