added `busy-text-is-html` attribute

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Button/AbpButtonTagHelper.cs

@@ -19,6 +19,8 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Button
 
         public FontIconType IconType { get; set; } = FontIconType.FontAwesome;
 
+        public bool BusyTextIsHtml { get; set; }
+
         public AbpButtonTagHelper(AbpButtonTagHelperService service) 
             : base(service)
         {

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Button/AbpButtonTagHelperService.cs

@@ -1,13 +1,14 @@
-using System;
-using Localization.Resources.AbpUi;
+using Localization.Resources.AbpUi;
 using Microsoft.AspNetCore.Razor.TagHelpers;
 using Microsoft.Extensions.Localization;
+using System;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Button
 {
     public class AbpButtonTagHelperService : AbpButtonTagHelperServiceBase<AbpButtonTagHelper>
     {
         protected const string DataBusyTextAttributeName = "data-busy-text";
+        protected const string DataBusyTextIsHtmlAttributeName = "data-busy-text-is-html";
 
         protected IStringLocalizer<AbpUiResource> L { get; }
 
@@ -22,6 +23,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Button
             output.TagName = "button";
             AddType(context, output);
             AddBusyText(context, output);
+            AddBusyTextIsHtml(context, output);
         }
 
         protected virtual void AddType(TagHelperContext context, TagHelperOutput output)
@@ -44,5 +46,15 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Button
 
             output.Attributes.SetAttribute(DataBusyTextAttributeName, busyText);
         }
+
+        protected virtual void AddBusyTextIsHtml(TagHelperContext context, TagHelperOutput output)
+        {
+            if (!TagHelper.BusyTextIsHtml)
+            {
+                return;
+            }
+
+            output.Attributes.SetAttribute(DataBusyTextIsHtmlAttributeName, TagHelper.BusyTextIsHtml.ToString().ToLower());
+        }
     }
 }

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Theme.Shared/wwwroot/libs/abp/aspnetcore-mvc-ui-theme-shared/jquery/jquery-extensions.js

@@ -35,7 +35,12 @@
                 //change text
                 if ($buttonInnerSpan.length && $button.attr('data-busy-text')) {
                     $button.data('buttonOriginalText', $buttonInnerSpan.html());
-                    $buttonInnerSpan.text($button.attr('data-busy-text'));
+                    
+                    if ($button.data('busy-text-is-html')) {
+                        $buttonInnerSpan.html($button.attr('data-busy-text'));
+                    } else {
+                        $buttonInnerSpan.text($button.attr('data-busy-text'));
+                    }
                 }
 
                 $button.addClass('button-busy');
@@ -55,7 +60,7 @@
 
                 //restore text
                 if ($buttonInnerSpan.length && $button.data('buttonOriginalText')) {
-                    $buttonInnerSpan.text($button.data('buttonOriginalText'));
+                    $buttonInnerSpan.html($button.data('buttonOriginalText'));
                 }
 
                 $button.removeClass('button-busy');

framework/test/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Demo/Pages/Components/Buttons.cshtml

@@ -295,6 +295,9 @@
             <li>
                 <b>busy-text</b>: Sets "data-busy-text" attribute. Default value is localization of "ProcessingWithThreeDot" string.
             </li>
+            <li>
+                <b>busy-text-is-html</b>: Sets "data-busy-is-html" attribute. Default value is "false".
+            </li>
         </ul>
     </div>
 </div>