#64: Get title from 'title' element.

RusKnyaz · Oct 7, 2021 · 727447e · 727447e
1 parent 7aba69d
commit 727447e
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Showing 5 changed files with 66 additions and 1 deletion.
diff --git a/source/Knyaz.Optimus.JsTests/CommonTests.cs b/source/Knyaz.Optimus.JsTests/CommonTests.cs
@@ -52,6 +52,9 @@ public class CommonTests
 		[TestCase("Images")]
 		[TestCase("Links")]
 		[TestCase("CreateAttribute")]
+		[TestCase("TitleFromElement")]
+		[TestCase("SetTitle")]
+		[TestCase("UpdateTitle")]
 		public void DocumentTests(string testName) => JsTestsRunner.Run(_jsEngine, testName);
 
 		[TestCase("CommentRemove")]

diff --git a/source/Knyaz.Optimus.JsTests/Tests/DocumentTests.js b/source/Knyaz.Optimus.JsTests/Tests/DocumentTests.js
@@ -320,5 +320,34 @@ Test("DocumentTests", {
             Assert.AreEqual("lay-submit", attr.name);
             Assert.AreEqual('', attr.value);
         }
+    },
+    "TitleFromElement":{
+        run:function(){
+            var doc = document.implementation.createHTMLDocument();
+            var title = doc.createElement('title');
+            title.textContent = "Hello";
+            doc.head.appendChild(title);
+            Assert.AreEqual("Hello", doc.title);
+        }
+    },
+    "SetTitle": {
+        run:function(){
+            var doc = document.implementation.createHTMLDocument();
+            doc.title = "Hello"
+            Assert.AreEqual("Hello", doc.title);
+            var title = doc.getElementsByTagName("title")[0];
+            Assert.AreEqual("Hello", title.textContent); 
+        }
+    },
+    "UpdateTitle":{
+        run:function(){
+            var doc = document.implementation.createHTMLDocument();
+            var title = doc.createElement('title');
+            title.textContent = "Hello";
+            doc.head.appendChild(title);
+            Assert.AreEqual("Hello", doc.title);
+            doc.title = "world";
+            Assert.AreEqual("world", title.textContent);
+        }
     }
 });
diff --git a/source/Knyaz.Optimus/Dom/Elements/HtmlTitleElement.cs b/source/Knyaz.Optimus/Dom/Elements/HtmlTitleElement.cs
@@ -0,0 +1,12 @@
+using Knyaz.Optimus.ScriptExecuting;
+
+namespace Knyaz.Optimus.Dom.Elements
+{
+	[JsName("HTMLTitleElement")]
+	public class HtmlTitleElement : HtmlElement
+	{
+		internal HtmlTitleElement(HtmlDocument ownerDocument) : base(ownerDocument, TagsNames.Title)
+		{
+		}
+	}
+}
diff --git a/source/Knyaz.Optimus/Dom/HtmlDocument.cs b/source/Knyaz.Optimus/Dom/HtmlDocument.cs
@@ -311,6 +311,7 @@ public Element CreateElement(string tagName)
 				case TagsNames.Head:return new Head(this);
 				case TagsNames.Body:return new HtmlBodyElement(this);
 				case TagsNames.Textarea: return new HtmlTextAreaElement(this);
+				case TagsNames.Title: return new HtmlTitleElement(this);
 				case TagsNames.Form:return new HtmlFormElement(this);
 				case TagsNames.IFrame:return new HtmlIFrameElement(this);
 				case TagsNames.Html:return new HtmlHtmlElement(this);
@@ -465,10 +466,28 @@ internal void HandleFormSubmit(HtmlFormElement htmlFormElement, HtmlElement subm
 
 		public string CompatMode => ChildNodes.OfType<DocType>().Any() ? "CSS1Compat" : "BackCompat";
 
+
+		private HtmlTitleElement GetTitleElement() => (HtmlTitleElement)GetElementsByTagName(TagsNames.Title).FirstOrDefault();
+
 		/// <summary>
 		/// Sets or gets the title of the document.
 		/// </summary>
-		public string Title { get; set; }
+		public string Title
+		{
+			get => GetTitleElement()?.TextContent ?? string.Empty;
+			set
+			{
+				var elt = GetTitleElement();
+				if (elt == null && !string.IsNullOrEmpty(value))
+				{
+					elt = (HtmlTitleElement)CreateElement("title");
+					Head.AppendChild(elt);
+				}
+
+				if(elt != null)
+					elt.TextContent = value;
+			}
+		}
 
 		/// <summary> Gets the currently focused element in the document. </summary>
 		public Element ActiveElement { get; set; }

diff --git a/source/Knyaz.Optimus/Dom/TagsNames.cs b/source/Knyaz.Optimus/Dom/TagsNames.cs
@@ -125,6 +125,8 @@ public static class TagsNames
 		/// <summary>THEAD</summary>
 		/// <remarks>Table header.</remarks>
 		public const string THead = "THEAD";
+
+		public const string Title = "TITLE";
 
 		/// <summary>TR</summary>
 		/// <remarks>Table row.</remarks>