Add suggest menu for user mentions in text editor

assets/js/core/dom.js

@@ -10,6 +10,14 @@ KB.dom = function (tag) {
             return this;
         };
 
+        this.data = function (attribute, value) {
+            if (arguments.length === 1) {
+                return element.dataset[attribute];
+            }
+            element.dataset[attribute] = value;
+            return this;
+        };
+
         this.hide = function () {
             element.style.display = 'none';
             return this;
@@ -30,6 +38,11 @@ KB.dom = function (tag) {
             return this;
         };
 
+        this.style = function(attribute, value) {
+            element.style[attribute] = value;
+            return this;
+        };
+
         this.on = function (eventName, callback) {
             element.addEventListener(eventName, function (e) {
                 e.preventDefault();
@@ -43,6 +56,10 @@ KB.dom = function (tag) {
             return this.on('click', callback);
         };
 
+        this.mouseover = function (callback) {
+            return this.on('mouseover', callback);
+        };
+
         this.change = function (callback) {
             return this.on('change', callback);
         };
@@ -96,6 +113,11 @@ KB.dom = function (tag) {
             return this;
         };
 
+        this.remove = function () {
+            element.parentNode.removeChild(element);
+            return this;
+        };
+
         this.parent = function (selector) {
             for (; element && element !== document; element = element.parentNode) {
                 if (element.matches(selector)) {