Projektdateien hinzufügen.

VideoBrowser/Controls/CefSharpBrowser/CreateTabAddInButton.cs

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+namespace VideoBrowser.Controls.CefSharpBrowser
+{
+    using System;
+    using System.Windows;
+    using System.Windows.Media;
+    using VideoBrowser.Controls.CefSharpBrowser.ViewModels;
+    using VideoBrowser.Helpers;
+
+    /// <summary>
+    /// Defines the <see cref="CreateTabAddInButton" />.
+    /// </summary>
+    public abstract class CreateTabAddInButton : AddInButton
+    {
+        #region Constructors
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="CreateTabAddInButton"/> class.
+        /// </summary>
+        /// <param name="title">The title<see cref="string"/>.</param>
+        /// <param name="icon">The icon<see cref="Geometry"/>.</param>
+        /// <param name="name">The name<see cref="string"/>.</param>
+        public CreateTabAddInButton(string title, Geometry icon, string name = null) : base(name)
+        {
+            this.Title = title;
+            this.Icon = icon;
+        }
+
+        #endregion Constructors
+
+        #region Properties
+
+        /// <summary>
+        /// Gets the Guid.
+        /// </summary>
+        public Guid Guid { get; } = Guid.NewGuid();
+
+        /// <summary>
+        /// Gets or sets the Title.
+        /// </summary>
+        public string Title { get; set; }
+
+        #endregion Properties
+
+        #region Methods
+
+        /// <summary>
+        /// The CreateView.
+        /// This method is already in UI Thread.
+        /// </summary>
+        /// <returns>The <see cref="UIElement"/>.</returns>
+        protected abstract UIElement CreateView();
+
+        /// <summary>
+        /// The Execute.
+        /// </summary>
+        /// <param name="viewModel">The viewModel<see cref="WebBrowserTabControlViewModel"/>.</param>
+        protected override void Execute(WebBrowserTabControlViewModel viewModel)
+        {
+            if (viewModel.IsTabItemExist(this.Guid))
+            {
+                viewModel.SetActiveTab(this.Guid);
+                return;
+            }
+
+            UIThreadHelper.InvokeAsync(() =>
+            {
+                var view = this.CreateView();
+                var tab = new TabItem(this.Guid)
+                {
+                    Content = view,
+                    Icon = this.Icon,
+                    Title = this.Title
+                };
+
+                viewModel.AddTab(tab);
+            });
+        }
+
+        #endregion Methods
+    }
+}