Work-around for backspacing into a list in Firefox

diff --git a/wcfsetup/install/files/js/3rdParty/redactor2/plugins/WoltLabKeydown.js b/wcfsetup/install/files/js/3rdParty/redactor2/plugins/WoltLabKeydown.js
index 4ef08424e3ea38442087e8bd4a606a6cb3937d70..24f2d0233a2c2f6af7c358d1adff12571d4f9de6 100644 (file)
--- a/wcfsetup/install/files/js/3rdParty/redactor2/plugins/WoltLabKeydown.js
+++ b/wcfsetup/install/files/js/3rdParty/redactor2/plugins/WoltLabKeydown.js
@@ -86,6 +86,32 @@ $.Redactor.prototype.WoltLabKeydown = function() {
                                        }
                                }
                                
+                               // Redactor's own work-around for backspacing in Firefox at the start of a block
+                               // is flawed when the previous element is a list. Their current implementation
+                               // inserts the content straight into the list element, rather than appending it
+                               // to the last possible location inside a <li>.
+                               if (e.which === this.keyCode.BACKSPACE && this.detect.isFirefox()) {
+                                       var block = this.selection.block();
+                                       if (block && block.tagName === 'P' && this.utils.isStartOfElement(block)) {
+                                               var previousBlock = block.previousElementSibling;
+                                               if (previousBlock && (previousBlock.nodeName === 'OL' || previousBlock.nodeName === 'UL')) {
+                                                       this.buffer.set();
+                                                       this.selection.save();
+                                                       
+                                                       var listItem = previousBlock.lastElementChild;
+                                                       while (block.childNodes.length) {
+                                                               listItem.appendChild(block.childNodes[0]);
+                                                       }
+                                                       
+                                                       elRemove(block);
+                                                       this.selection.restore();
+                                                       
+                                                       e.preventDefault();
+                                                       return;
+                                               }
+                                       }
+                               }
+                               
                                var returnValue = mpInit.call(this, e);
                                
                                if (returnValue !== false && !e.originalEvent.defaultPrevented) {