增加Tab键的反向操作功能，Shift+Tab快捷键删除行前的空格（或Tab快捷键产生的类似空格的内容）

_src/adapter/editorui.js

@@ -31,6 +31,7 @@
     anchor: "~/dialogs/anchor/anchor.html",
     insertimage: "~/dialogs/image/image.html",
     link: "~/dialogs/link/link.html",
+    insertacecode: "~/dialogs/insertacecode/insertacecode.html",
     spechars: "~/dialogs/spechars/spechars.html",
     searchreplace: "~/dialogs/searchreplace/searchreplace.html",
     map: "~/dialogs/map/map.html",
@@ -235,6 +236,7 @@
       "attachment",
       "anchor",
       "link",
+      "insertacecode",
       "insertimage",
       "map",
       "gmap",

_src/core/domUtils.js

@@ -2543,6 +2543,38 @@ var domUtils = (dom.domUtils = {
     }
     return true;
   },
-  fillHtml: browser.ie11below ? "&nbsp;" : "<br/>"
+  fillHtml: browser.ie11below ? "&nbsp;" : "<br/>",
+
+  /**
+   * add by ading 2020年4月1日10:20:17
+   * 删除节点前部的Tab键产生的空格，即tab键的shift+tab反向效果
+   * @method deleteTabspace
+   * @param { Node } delNode 需要删除tab空格的节点
+   * @param { Number } spaceCount 需要查询位置关系的节点B
+   * @return { Boolean } 是否有删除
+   * @example
+   */
+  deleteTabspace: function(delNode, spaceCount){
+    var bearkFlag = false; 
+    var reg1 = new RegExp('^[ , ]','g');    //创建正则RegExp对象 
+    var reg2 = new RegExp('^​','g');     //创建正则RegExp对象 
+    // 循环所有子元素寻找第一个不为空的子元素进行删除tab空格
+    this.getChildCount( delNode, function ( node ) {
+      if(!bearkFlag) {
+        if(!(node.id && node.id.indexOf('baidu_bookmark')>0)){
+          if((node.textContent && node.textContent.length>0) || (node.data && node.data.length>0)){
+            if(node.data && node.data.length>0){
+              var newData = node.data;
+              for( i = 0; i < spaceCount; i++ ) newData = newData.replace(reg1, '');
+              newData = newData.replace(reg2,'');
+              node.replaceWith(newData);
+            }
+            bearkFlag = true;
+          }
+        }
+      }
+    });
+    return bearkFlag;
+  }
 });
 var fillCharReg = new RegExp(domUtils.fillChar, "g");

_src/plugins/customstyle.js

@@ -41,6 +41,24 @@ UE.plugins["customstyle"] = function() {
         name: "hi",
         style:
           "font-size:16px;font-style:italic;font-weight:bold;color:rgb(51, 153, 204);line-height:18px;"
+      },
+      {
+        tag: "code",
+        name: "tagcode",
+        style:
+          "color:#c7254e;background-color:#f9f2f4;font-size:90%;padding:2px 4px;border-radius:4px;font-family:Menlo,Monaco,Consolas,\"Courier New\",monospace;"
+      },
+      {
+        tag: "kbd",
+        name: "tagkbd",
+        style:
+          "color:#fff;background-color:#333;font-size:90%;padding:2px 4px;border-radius:3px;font-family:Menlo,Monaco,Consolas,\"Courier New\",monospace;"
+      },
+      {
+        tag: "p",
+        name: "tagpre",
+        style:
+          "display:block;padding:9.5px;margin:0 0 10px;font-size:13px;line-height:1.43;color:#333;word-break:break-all;word-wrap:break-word;background-color:#f5f5f5;border:1px solid #ccc;border-radius:4px;font-family:Menlo,Monaco,Consolas,\"Courier New\",monospace;"
       }
     ]
   });

_src/plugins/keystrokes.js

@@ -130,7 +130,17 @@ UE.plugins["keystrokes"] = function() {
       var span = me.document.createElement("span");
       span.innerHTML = txt + domUtils.fillChar;
       if (range.collapsed) {
-        range.insertNode(span.cloneNode(true).firstChild).setCursor(true);
+        // change by ading 2020年4月1日11:16:25 单行`Tab`快捷键增加支持 `shift+Tab`反向操作
+        if(evt.shiftKey){
+          var bookmark = range.createBookmark();
+          range.enlarge(true);
+          var bookmark2 = range.createBookmark(),
+              current = domUtils.getNextDomNode(bookmark2.start, false, filterFn);
+          domUtils.deleteTabspace(current, tabSize);
+          range.moveToBookmark(bookmark2).moveToBookmark(bookmark).select();
+        } else {
+          range.insertNode(span.cloneNode(true).firstChild).setCursor(true);
+        }
       } else {
         var filterFn = function(node) {
           return (
@@ -156,11 +166,15 @@ UE.plugins["keystrokes"] = function() {
               domUtils.POSITION_FOLLOWING
             )
           ) {
-            current.insertBefore(
-              span.cloneNode(true).firstChild,
-              current.firstChild
-            );
-            current = domUtils.getNextDomNode(current, false, filterFn);
+            // change by ading 2020年4月1日11:18:52 多行`Tab`快捷键增加支持 `shift+Tab`反向操作
+            if(evt.shiftKey){
+              var nextN = domUtils.getNextDomNode(current, false, filterFn);
+              domUtils.deleteTabspace(current, tabSize);
+              current = nextN;
+            }else{
+              current.insertBefore(span.cloneNode(true).firstChild, current.firstChild);
+              current = domUtils.getNextDomNode(current, false, filterFn);
+            }
           }
           range.moveToBookmark(bookmark2).moveToBookmark(bookmark).select();
         }

_test/editor_config.js

@@ -62,6 +62,7 @@ var UEDITOR_CONFIG2 = {
         'image': '图片',
         'inserttable': '表格',
         'link': '超链接',
+        'insertacecode': '插入ace格式代码',
         'emoticon': '表情',
         'spechars': '特殊字符',
         'searchreplace': '查询替换',
@@ -89,6 +90,7 @@ var UEDITOR_CONFIG2 = {
         'image': '~/dialogs/image/image.html',
         'inserttable': '~/dialogs/table/table.html',
         'link': '~/dialogs/link/link.html',
+        'insertacecode': '~/dialogs/insertacecode/insertacecode.html',
         'emoticon': '~/dialogs/emoticon/emoticon.html',
         'spechars': '~/dialogs/spechars/spechars.html',
         'searchreplace': '~/dialogs/searchreplace/searchreplace.html',

_test/editor_config_src.js

@@ -62,6 +62,7 @@ var UEDITOR_CONFIG = {
         'image': '图片',
         'inserttable': '表格',
         'link': '超链接',
+        'insertacecode': '插入ace格式代码',
         'emoticon': '表情',
         'spechars': '特殊字符',
         'searchreplace': '查询替换',
@@ -90,6 +91,7 @@ var UEDITOR_CONFIG = {
         'image': '../../../dialogs/image/image.html',
         'inserttable': '../../../dialogs/table/table.html',
         'link': '../../../dialogs/link/link.html',
+        'insertacecode': '../../../dialogs/insertacecode/insertacecode.html',
         'emoticon': '../../../dialogs/emoticon/emoticon.html',
         'spechars': '../../../dialogs/spechars/spechars.html',
         'searchreplace': '../../../dialogs/searchreplace/searchreplace.html',