Add project files.

2022-11-01 15:26:08 +00:00
parent daa7b59f22
commit 7e4f880821
408 changed files with 16863 additions and 0 deletions
@@ -0,0 +1,53 @@
+using System.Collections.Generic;
+using System.Windows;
+using System.Windows.Controls;
+using TheXamlGuy.Framework.Core;
+using TheXamlGuy.UI.WPF;
+
+namespace TheXamlGuy.Framework.WPF
+{
+    public class TemplateSelector : DataTemplateSelector, ITemplateSelector
+    {
+        private readonly Dictionary<object, DataTemplate> dataTracking = new();
+
+        private readonly ITemplateFactory templateFactory;
+        private readonly IEventAggregator eventAggregator;
+
+        public TemplateSelector(ITemplateFactory templateFactory, 
+            IEventAggregator eventAggregator)
+        {
+            this.templateFactory = templateFactory;
+            this.eventAggregator = eventAggregator;
+        }
+
+        public override DataTemplate SelectTemplate(object item, DependencyObject container)
+        {
+            if (item is not null)
+            {
+                if (dataTracking.TryGetValue(item, out DataTemplate? cachedDataTemplate))
+                {
+                    return cachedDataTemplate;
+                }
+
+                if (templateFactory.Create(item) is FrameworkElement template)
+                {
+                    if (TemplateGenerator.CreateDataTemplate(() => template) is DataTemplate dataTemplate)
+                    {
+                        template.DataContext = item;
+
+                        dataTemplate.Seal();
+                        if (template is ICachable cachable)
+                        {
+                            dataTracking[item!] = dataTemplate;
+                        }
+
+                        eventAggregator.Publish(Navigated.Create((dynamic?)template, (dynamic?)item));
+                        return dataTemplate;
+                    }
+                }
+            }
+
+            return base.SelectTemplate(item, container);
+        }
+    }
+}