Merge pull request #487 from gehongyan/combobox-selectionbox

feat: ComboBox should respect SelectionBoxItemTemplate

Author: rabbitism

demo/Semi.Avalonia.Demo/Pages/ComboBoxDemo.axaml

@@ -27,6 +27,15 @@
         <ComboBox Classes="Small" />
         <ComboBox Classes="Bordered" />
         <ComboBox Classes="Bordered" IsEnabled="False" />
+        <ComboBox>
+          <ComboBox.SelectionBoxItemTemplate>
+            <DataTemplate DataType="x:String">
+              <ContentControl BorderThickness="1"
+                              BorderBrush="Gold"
+                              Content="{Binding}" />
+            </DataTemplate>
+          </ComboBox.SelectionBoxItemTemplate>
+        </ComboBox>
 
         <StackPanel Orientation="Horizontal">
             <ComboBox Width="100" Classes="Large" PlaceholderText="Large" />

src/Semi.Avalonia/Controls/ComboBox.axaml

@@ -76,7 +76,7 @@
                             HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
                             VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"
                             Content="{TemplateBinding SelectionBoxItem}"
-                            ContentTemplate="{TemplateBinding ItemTemplate}" />
+                            ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}" />
                         <Button
                             Name="ClearButton"
                             Grid.Column="1"