Generate initial static html

Ooui.AspNetCore/ElementResult.cs

@@ -1,28 +1,30 @@
 using System;
-using System.Text;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Mvc;
-
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+
 namespace Ooui.AspNetCore
 {
     public class ElementResult : ActionResult
-    {
+    {
         readonly Element element;
-        readonly string title;
-
+        readonly string title;
+
         public ElementResult (Element element, string title = "")
-        {
+        {
             this.element = element;
-            this.title = title;
+            this.title = title;
         }
 
-        public override async Task ExecuteResultAsync (ActionContext context)
+        public override async Task ExecuteResultAsync (ActionContext context)
         {
             var response = context.HttpContext.Response;
             response.StatusCode = 200;
             response.ContentType = "text/html; charset=utf-8";
             var sessionId = WebSocketHandler.BeginSession (context.HttpContext, element);
-            var html = UI.RenderTemplate (WebSocketHandler.WebSocketPath + "?id=" + sessionId, title: title);
+            var initialHtml = element.OuterHtml;
+            Console.WriteLine(initialHtml);
+            var html = UI.RenderTemplate (WebSocketHandler.WebSocketPath + "?id=" + sessionId, title: title, initialHtml: initialHtml);
             var htmlBytes = Encoding.UTF8.GetBytes (html);
             response.ContentLength = htmlBytes.Length;
             using (var s = response.Body) {

Ooui.Forms/Renderers/ViewRenderer.cs

@@ -21,6 +21,8 @@ namespace Ooui.Forms.Renderers
         /// </summary>
         protected virtual bool ManageNativeControlLifetime => true;
 
+		protected override bool HtmlNeedsFullEndElement => TagName == "div";
+
         public ViewRenderer (string tagName = "div")
             : base (tagName)
         {

Ooui.Forms/VisualElementRenderer.cs

@@ -62,6 +62,8 @@ namespace Ooui.Forms
             }
         }
 
+        protected override bool HtmlNeedsFullEndElement => TagName == "div";
+
         public VisualElementRenderer (string tagName = "div") : base (tagName)
         {
             _propertyChangedHandler = OnElementPropertyChanged;

Ooui/Client.js

@@ -38,6 +38,8 @@ function getSize () {
 // Main entrypoint
 function ooui (rootElementPath) {
 
+    return;
+
     var initialSize = getSize ();
     var wsArgs = (rootElementPath.indexOf("?") >= 0 ? "&" : "?") +
         "w=" + initialSize.width + "&h=" + initialSize.height;

Ooui/Div.cs

@@ -5,6 +5,8 @@ namespace Ooui
 {
     public class Div : Element
     {
+        protected override bool HtmlNeedsFullEndElement => true;
+
         public Div ()
             : base ("div")
         {

Ooui/Element.cs

@@ -243,5 +243,38 @@ namespace Ooui
                     return base.SaveStateMessageIfNeeded (message);
             }
         }
+
+        protected virtual bool HtmlNeedsFullEndElement => false;
+
+        public override void WriteOuterHtml (System.Xml.XmlWriter w)
+        {
+            w.WriteStartElement (TagName);
+            w.WriteAttributeString ("id", Id);
+            var style = Style.ToString ();
+            if (style.Length > 0) {
+                w.WriteAttributeString ("style", style);
+            }
+            lock (attributes) {
+                foreach (var a in attributes) {
+                    var value = (a.Value == null) ? "null" : Convert.ToString (a.Value, System.Globalization.CultureInfo.InvariantCulture);
+                    w.WriteAttributeString (a.Key, value);
+                }
+            }
+            WriteInnerHtml (w);
+            if (HtmlNeedsFullEndElement) {
+                w.WriteFullEndElement ();
+            }
+            else {
+                w.WriteEndElement ();
+            }
+        }
+
+        public virtual void WriteInnerHtml (System.Xml.XmlWriter w)
+        {
+            var children = Children;
+            foreach (var c in children) {
+                c.WriteOuterHtml (w);
+            }
+        }
     }
 }

Ooui/Node.cs

@@ -180,5 +180,24 @@ namespace Ooui
             }
             return false;
         }
+
+        public virtual string OuterHtml {
+            get {
+                using (var stream = new System.IO.MemoryStream ()) {
+                    var settings = new System.Xml.XmlWriterSettings {
+                        OmitXmlDeclaration = true,
+                        ConformanceLevel = System.Xml.ConformanceLevel.Fragment,
+                        CloseOutput = false,
+                    };
+                    using (var w = System.Xml.XmlWriter.Create (stream, settings)) {
+                        WriteOuterHtml (w);
+                    }
+                    stream.Position = 0;
+                    return new System.IO.StreamReader (stream).ReadToEnd ();
+                }
+            }
+        }
+
+        public abstract void WriteOuterHtml (System.Xml.XmlWriter w);
     }
 }

Ooui/Style.cs

@@ -399,7 +399,7 @@ namespace Ooui
                     o.Append (head);
                     o.Append (p.Key);
                     o.Append (":");
-                    o.Append (String.Format (System.Globalization.CultureInfo.InvariantCulture, "{0}", p.Value));
+                    o.Append (Convert.ToString (p.Value, System.Globalization.CultureInfo.InvariantCulture));
                     head = ";";
                 }
             }

Ooui/TextArea.cs

@@ -31,6 +31,8 @@ namespace Ooui
             set => SetAttributeProperty ("cols", value);
         }
 
+        protected override bool HtmlNeedsFullEndElement => true;
+
         public TextArea ()
             : base ("textarea")
         {
@@ -52,5 +54,10 @@ namespace Ooui
             }
             return base.TriggerEventFromMessage (message);
         }
+
+        public override void WriteInnerHtml (System.Xml.XmlWriter w)
+        {
+            w.WriteString (val ?? "");
+        }
     }
 }

Ooui/TextNode.cs

@@ -20,5 +20,10 @@ namespace Ooui
         {
             Text = text;
         }
+
+        public override void WriteOuterHtml (System.Xml.XmlWriter w)
+        {
+            w.WriteString (text);
+        }
     }
 }

Ooui/UI.cs

@@ -44,7 +44,10 @@ namespace Ooui
   <style>@Styles</style>
 </head>
 <body>
-<div id=""ooui-body"" class=""container-fluid""></div>
+
+<div id=""ooui-body"" class=""container-fluid"">
+@InitialHtml
+</div>
 
 <script type=""text/javascript"" src=""https://ajax.aspnetcdn.com/ajax/jquery/jquery-2.2.0.min.js""></script>
 <script type=""text/javascript"" src=""https://gitcdn.github.io/bootstrap-toggle/2.2.2/js/bootstrap-toggle.min.js""></script>
@@ -390,9 +393,9 @@ namespace Ooui
             }
         }
 
-        public static string RenderTemplate (string webSocketPath, string title = "")
+        public static string RenderTemplate (string webSocketPath, string title = "", string initialHtml = "")
         {
-            return Template.Replace ("@WebSocketPath", webSocketPath).Replace ("@Styles", rules.ToString ()).Replace ("@Title", title);
+            return Template.Replace ("@WebSocketPath", webSocketPath).Replace ("@Styles", rules.ToString ()).Replace ("@Title", title).Replace ("@InitialHtml", initialHtml);
         }
 
         class DataHandler : RequestHandler

Tests/WriteHtmlTests.cs

@@ -0,0 +1,95 @@
+using System;
+
+#if NUNIT
+using NUnit.Framework;
+using TestClassAttribute = NUnit.Framework.TestFixtureAttribute;
+using TestMethodAttribute = NUnit.Framework.TestCaseAttribute;
+#else
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+#endif
+
+using Ooui;
+
+namespace Tests
+{
+    [TestClass]
+    public class WriteHtmlTests
+    {
+        System.Text.RegularExpressions.Regex idre = new System.Text.RegularExpressions.Regex ("\\sid=\"[^\"]*\"");
+
+        string OuterHtmlWithoutIds (Element e)
+        {
+            return idre.Replace (e.OuterHtml, "");
+        }
+
+        [TestMethod]
+        public void TextAreaWithTextStyled ()
+        {
+            var e = new TextArea {
+                Value = "Hello World!",
+            };
+            e.Style.BackgroundColor = "#18f";
+            Assert.AreEqual ("<textarea style=\"background-color:#18f\">Hello World!</textarea>", OuterHtmlWithoutIds (e));
+        }
+
+        [TestMethod]
+        public void TextAreaEmptyStyled ()
+        {
+            var e = new TextArea ();
+            e.Style.BackgroundColor = "#18f";
+            Assert.AreEqual ("<textarea style=\"background-color:#18f\"></textarea>", OuterHtmlWithoutIds (e));
+        }
+
+        [TestMethod]
+        public void Style ()
+        {
+            var e = new Div ();
+            e.Style.BackgroundColor = "#18f";
+            Assert.AreEqual ("<div style=\"background-color:#18f\"></div>", OuterHtmlWithoutIds (e));
+        }
+
+        [TestMethod]
+        public void TwoGrandChildren ()
+        {
+            var e = new Div (new Div (new Anchor (), new Anchor ()), new Paragraph ());
+            Assert.AreEqual ("<div><div><a /><a /></div><p /></div>", OuterHtmlWithoutIds (e));
+        }
+
+        [TestMethod]
+        public void Child ()
+        {
+            var e = new Div (new Anchor ());
+            Assert.AreEqual ("<div><a /></div>", OuterHtmlWithoutIds (e));
+        }
+
+        [TestMethod]
+        public void TextChild ()
+        {
+            var e = new Paragraph ("Hello world!");
+            Assert.AreEqual ("<p>Hello world!</p>", OuterHtmlWithoutIds (e));
+        }
+
+        [TestMethod]
+        public void IdIsFirst ()
+        {
+            var e = new Anchor ();
+            Assert.IsTrue (e.OuterHtml.StartsWith ("<a id=\""));
+        }
+
+        [TestMethod]
+        public void EmptyElement ()
+        {
+            var e = new Anchor ();
+            Assert.AreEqual ("<a />", OuterHtmlWithoutIds (e));
+        }
+
+        [TestMethod]
+        public void AnchorHRef ()
+        {
+            var e = new Anchor {
+                HRef = "http://google.com"
+            };
+            Assert.AreEqual ("<a href=\"http://google.com\" />", OuterHtmlWithoutIds (e));
+        }
+    }
+}