Added (shift+)tab-key navigation inside tables

diff --git a/wcfsetup/install/files/js/3rdParty/redactor2/plugins/WoltLabKeydown.js b/wcfsetup/install/files/js/3rdParty/redactor2/plugins/WoltLabKeydown.js
index 4c32db8a5ec72b6d0e040eaee5464e1d54a66810..fc1b59bf21380c7f5d306a1d0b1ce7567e6ad6d1 100644 (file)
--- a/wcfsetup/install/files/js/3rdParty/redactor2/plugins/WoltLabKeydown.js
+++ b/wcfsetup/install/files/js/3rdParty/redactor2/plugins/WoltLabKeydown.js
@@ -401,8 +401,67 @@ $.Redactor.prototype.WoltLabKeydown = function() {
                        
                        var mpOnTab = this.keydown.onTab;
                        this.keydown.onTab = (function(e, key) {
-                               if (!this.keydown.pre && $(this.selection.current()).closest('ul, ol', this.core.editor()[0]).length === 0) {
-                                       return true;
+                               if (!this.keydown.pre) {
+                                       var closestRelevantBlock = $(this.selection.current()).closest('ul, ol, td', this.core.editor()[0]);
+                                       if (closestRelevantBlock.length === 0) {
+                                               // ignore tab, the browser's default action will be executed
+                                               return true;
+                                       }
+                                       
+                                       closestRelevantBlock = closestRelevantBlock[0];
+                                       if (closestRelevantBlock.nodeName === 'TD') {
+                                               var target = null;
+                                               
+                                               if (e.originalEvent.shiftKey) {
+                                                       target = closestRelevantBlock.previousElementSibling;
+                                                       
+                                                       // first `<td>` of current `<tr>`
+                                                       if (target === null) {
+                                                               target = closestRelevantBlock.parentNode.previousElementSibling;
+                                                               
+                                                               if (target !== null) {
+                                                                       // set focus to last `<td>`
+                                                                       target = target.lastElementChild;
+                                                               }
+                                                       }
+                                               }
+                                               else {
+                                                       target = closestRelevantBlock.nextElementSibling;
+                                                       
+                                                       // last `<td>` of current `<tr>`
+                                                       if (target === null) {
+                                                               target = closestRelevantBlock.parentNode.nextElementSibling;
+                                                               
+                                                               // last `<tr>`
+                                                               if (target === null) {
+                                                                       this.table.addRowBelow();
+                                                                       
+                                                                       target = closestRelevantBlock.parentNode.nextElementSibling;
+                                                               }
+                                                               
+                                                               // set focus to first `<td>`
+                                                               target = target.firstElementChild;
+                                                       }
+                                               }
+                                               
+                                               if (target !== null) {
+                                                       if (this.utils.isEmpty(target.innerHTML)) {
+                                                               // `<td>` is empty
+                                                               this.caret.end(target);
+                                                       }
+                                                       else {
+                                                               // select the entire content
+                                                               var range = document.createRange();
+                                                               range.selectNodeContents(target);
+                                                               
+                                                               selection.removeAllRanges();
+                                                               selection.addRange(range);
+                                                       }
+                                               }
+                                               
+                                               e.originalEvent.preventDefault();
+                                               return false;
+                                       }
                                }
                                
                                return mpOnTab.call(this, e, key);