Tag helpers for bundling

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Bundling/AbpBundleFileTagHelper.cs

@@ -0,0 +1,17 @@
+using Microsoft.AspNetCore.Razor.TagHelpers;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Bundling
+{
+    [HtmlTargetElement("abp-bundle-file", TagStructure = TagStructure.NormalOrSelfClosing, ParentTag = "abp-style-bundle")]
+    [HtmlTargetElement("abp-bundle-file", TagStructure = TagStructure.NormalOrSelfClosing, ParentTag = "abp-script-bundle")]
+    public class AbpBundleFileTagHelper : AbpTagHelper<AbpBundleFileTagHelper, AbpBundleFileTagHelperService>
+    {
+        public string Src { get; set; }
+
+        public AbpBundleFileTagHelper(AbpBundleFileTagHelperService service) 
+            : base(service)
+        {
+
+        }
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Bundling/AbpBundleFileTagHelperService.cs

@@ -0,0 +1,18 @@
+using System.Collections.Generic;
+using Microsoft.AspNetCore.Razor.TagHelpers;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Bundling
+{
+    public class AbpBundleFileTagHelperService : AbpTagHelperService<AbpBundleFileTagHelper>
+    {
+        public const string ContextFileListKey = "AbpBundleFileTagHelperService.BundleFiles";
+
+        public override void Process(TagHelperContext context, TagHelperOutput output)
+        {
+            output.SuppressOutput();
+
+            var files = (List<string>)context.Items[ContextFileListKey];
+            files.Add(TagHelper.Src);
+        }
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Bundling/AbpScriptBundleTagHelper.cs

@@ -0,0 +1,15 @@
+using Microsoft.AspNetCore.Razor.TagHelpers;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Bundling
+{
+    [HtmlTargetElement("abp-script-bundle", TagStructure = TagStructure.NormalOrSelfClosing)]
+    public class AbpScriptBundleTagHelper : AbpTagHelper<AbpScriptBundleTagHelper, AbpScriptBundleTagHelperService>
+    {
+        public string Name { get; set; }
+
+        public AbpScriptBundleTagHelper(AbpScriptBundleTagHelperService service)
+            : base(service)
+        {
+        }
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Bundling/AbpScriptBundleTagHelperService.cs

@@ -0,0 +1,61 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Razor.TagHelpers;
+using Volo.Abp.AspNetCore.Mvc.UI.Bundling;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Bundling
+{
+    public class AbpScriptBundleTagHelperService : AbpTagHelperService<AbpScriptBundleTagHelper>
+    {
+        private readonly IBundleManager _bundleManager;
+
+        public AbpScriptBundleTagHelperService(IBundleManager bundleManager)
+        {
+            _bundleManager = bundleManager;
+        }
+
+        public override async Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
+        {
+            output.TagName = null;
+
+            var bundleName = TagHelper.Name;
+            var files = await GetFileList(context, output);
+            if (bundleName.IsNullOrEmpty())
+            {
+                bundleName = GenerateBundleName(context, output, files);
+            }
+
+            _bundleManager.CreateDynamicScriptBundle(
+                bundleName,
+                configuration => configuration.AddFiles(files.ToArray())
+            );
+
+            var bundleFiles = _bundleManager.GetScriptBundleFiles(bundleName);
+            await output.GetChildContentAsync(); //TODO: Suppress child execution!
+            output.Content.Clear();
+            AddLinkTags(context, output, bundleFiles);
+        }
+
+        protected virtual void AddLinkTags(TagHelperContext context, TagHelperOutput output, List<string> files)
+        {
+            foreach (var file in files)
+            {
+                output.Content.AppendHtml($"<script src=\"{file}\" type=\"text/javascript\"></script>{Environment.NewLine}");
+            }
+        }
+
+        protected virtual string GenerateBundleName(TagHelperContext context, TagHelperOutput output, List<string> fileList)
+        {
+            return fileList.JoinAsString("|").ToMd5();
+        }
+
+        protected virtual async Task<List<string>> GetFileList(TagHelperContext context, TagHelperOutput output)
+        {
+            var fileList = new List<string>();
+            context.Items[AbpBundleFileTagHelperService.ContextFileListKey] = fileList;
+            await output.GetChildContentAsync();
+            return fileList;
+        }
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Bundling/AbpStyleBundleTagHelper.cs

@@ -0,0 +1,18 @@
+using Microsoft.AspNetCore.Razor.TagHelpers;
+using Volo.Abp.Threading;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Bundling
+{
+    //TODO: Move to Volo.Abp.AspNetCore.Mvc.UI package.
+
+    [HtmlTargetElement("abp-style-bundle", TagStructure = TagStructure.NormalOrSelfClosing)]
+    public class AbpStyleBundleTagHelper : AbpTagHelper<AbpStyleBundleTagHelper, AbpStyleBundleTagHelperService>
+    {
+        public string Name { get; set; }
+
+        public AbpStyleBundleTagHelper(AbpStyleBundleTagHelperService service)
+            : base(service)
+        {
+        }
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Bundling/AbpStyleBundleTagHelperService.cs

@@ -0,0 +1,62 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Razor.TagHelpers;
+using Volo.Abp.AspNetCore.Mvc.UI.Bundling;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Bundling
+{
+    public class AbpStyleBundleTagHelperService : AbpTagHelperService<AbpStyleBundleTagHelper>
+    {
+        private readonly IBundleManager _bundleManager;
+
+        public AbpStyleBundleTagHelperService(IBundleManager bundleManager)
+        {
+            _bundleManager = bundleManager;
+        }
+
+        public override async Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
+        {
+            output.TagName = null;
+
+            var bundleName = TagHelper.Name;
+            var files = await GetFileList(context, output);
+            if (bundleName.IsNullOrEmpty())
+            {
+                bundleName = GenerateBundleName(context, output, files);
+            }
+
+            _bundleManager.CreateDynamicStyleBundle(
+                bundleName,
+                configuration => configuration.AddFiles(files.ToArray())
+            );
+
+            var bundleFiles = _bundleManager.GetStyleBundleFiles(bundleName);
+            await output.GetChildContentAsync(); //TODO: Suppress child execution!
+            output.Content.Clear();
+            AddLinkTags(context, output, bundleFiles);
+        }
+
+        protected virtual void AddLinkTags(TagHelperContext context, TagHelperOutput output, List<string> files)
+        {
+            foreach (var file in files)
+            {
+                output.Content.AppendHtml(
+                    $"<link rel=\"stylesheet\" type=\"text/css\" href=\"{file}\" />{Environment.NewLine}");
+            }
+        }
+
+        protected virtual string GenerateBundleName(TagHelperContext context, TagHelperOutput output, List<string> fileList)
+        {
+            return fileList.JoinAsString("|").ToMd5();
+        }
+
+        protected virtual async Task<List<string>> GetFileList(TagHelperContext context, TagHelperOutput output)
+        {
+            var fileList = new List<string>();
+            context.Items[AbpBundleFileTagHelperService.ContextFileListKey] = fileList;
+            await output.GetChildContentAsync();
+            return fileList;
+        }
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI/UI/Bundling/BundleCollection.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bundling
 {
@@ -34,9 +35,16 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bundling
             return _bundleContributors[bundleName];
         }
 
-        public BundleConfiguration GetOrAdd(string bundleName)
+        public BundleConfiguration GetOrAdd(string bundleName, Action<BundleConfiguration> configureAction = null)
         {
-            return _bundleContributors.GetOrAdd(bundleName, () => new BundleConfiguration(bundleName));
+            return _bundleContributors.GetOrAdd(
+                bundleName,
+                () =>
+                {
+                    var configuration = new BundleConfiguration(bundleName);
+                    configureAction?.Invoke(configuration);
+                    return configuration;
+                });
         }
 
         public List<string> GetFiles(string bundleName)

src/Volo.Abp.AspNetCore.Mvc.UI/UI/Bundling/BundleManager.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using Microsoft.AspNetCore.Hosting;
@@ -48,5 +49,17 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bundling
                 )
             };
         }
+
+        public void CreateDynamicStyleBundle(string bundleName, Action<BundleConfiguration> configureAction)
+        {
+            //TODO: How to handle concurrency!
+            _options.StyleBundles.GetOrAdd(bundleName, configureAction);
+        }
+
+        public void CreateDynamicScriptBundle(string bundleName, Action<BundleConfiguration> configureAction)
+        {
+            //TODO: How to handle concurrency!
+            _options.ScriptBundles.GetOrAdd(bundleName, configureAction);
+        }
     }
 }

src/Volo.Abp.AspNetCore.Mvc.UI/UI/Bundling/IBundleManager.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bundling
@@ -7,5 +8,9 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bundling
         List<string> GetStyleBundleFiles(string bundleName);
 
         List<string> GetScriptBundleFiles(string bundleName);
+
+        void CreateDynamicStyleBundle(string bundleName, Action<BundleConfiguration> configureAction);
+
+        void CreateDynamicScriptBundle(string bundleName, Action<BundleConfiguration> configureAction);
     }
 }