提供通用的工具

dotnet-campus · Nov 24, 2023 · f04035a · f04035a
1 parent 8c498a0
commit f04035a
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Showing 3 changed files with 26 additions and 20 deletions.
diff --git a/demo/UnoDemo/IpcUno/IpcUno/Presentation/ChatPage.xaml.cs b/demo/UnoDemo/IpcUno/IpcUno/Presentation/ChatPage.xaml.cs
@@ -19,26 +19,18 @@ public ChatPage(ConnectedPeerModel model, string serverName)
 
         private void ChatPage_Loaded(object sender, RoutedEventArgs e)
         {
-            ScrollToBottom(MessageListView);
+            MessageListView.ScrollToBottom();
 
             // 有消息过来，自动滚动到最下
             Model.MessageList.CollectionChanged += (o, args) =>
             {
                 _ = Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Low, () =>
                  {
-                     ScrollToBottom(MessageListView);
+                     MessageListView.ScrollToBottom();
                  });
             };
         }
 
-        private void ScrollToBottom(ListView listView)
-        {
-            if (listView.VisualDescendant<ScrollViewer>() is { } scrollViewer)
-            {
-                scrollViewer.ChangeView(0.0f, scrollViewer.ExtentHeight, 1.0f, true);
-            }
-        }
-
         public string ServerName { get; }
 
         public ConnectedPeerModel Model { get; }

diff --git a/demo/UnoDemo/IpcUno/IpcUno/Presentation/MainPage.xaml.cs b/demo/UnoDemo/IpcUno/IpcUno/Presentation/MainPage.xaml.cs
@@ -31,19 +31,10 @@ private void ViewModel_AddedLogMessage(object? sender, string message)
             // 延迟一下，防止界面还没刷新就执行滚动
             _ = Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Low, () =>
             {
-                ScrollToBottom(LogTextBox);
+                LogTextBox.ScrollToBottom();
             });
         }
 
-        private void ScrollToBottom(TextBox textBox)
-        {
-            //textBox.Spy();
-            if(textBox.VisualDescendant<ScrollViewer>() is { } scrollViewer)
-            {
-                scrollViewer.ChangeView(0.0f, scrollViewer.ExtentHeight, 1.0f, true);
-            }
-        }
-
         public MainViewModel ViewModel => (MainViewModel) DataContext;
 
         private void ConnectedPeerListView_SelectionChanged(object sender, SelectionChangedEventArgs e)

diff --git a/demo/UnoDemo/IpcUno/IpcUno/Utils/ScrollViewerExtensions.cs b/demo/UnoDemo/IpcUno/IpcUno/Utils/ScrollViewerExtensions.cs
@@ -0,0 +1,23 @@
+namespace IpcUno.Utils
+{
+    static class ScrollViewerExtensions
+    {
+        public static void ScrollToBottom(this TextBox textBox)
+        {
+            ScrollToBottomInner(textBox);
+        }
+
+        public static void ScrollToBottom(this ListView listView)
+        {
+            ScrollToBottomInner(listView);
+        }
+
+        private static void ScrollToBottomInner(UIElement element)
+        {
+            if (element.VisualDescendant<ScrollViewer>() is { } scrollViewer)
+            {
+                scrollViewer.ChangeView(0.0f, scrollViewer.ExtentHeight, 1.0f, true);
+            }
+        }
+    }
+}