feat: implement resizing logic.

demo/Ursa.Demo/Dialogs/DialogWithAction.axaml

@@ -1,25 +1,43 @@
-<UserControl xmlns="https://github.com/avaloniaui"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-             xmlns:local="clr-namespace:Ursa.Demo.Dialogs"
-             x:DataType="local:DialogWithActionViewModel"
-             x:CompileBindings="True"
-             Background="{DynamicResource SemiYellow1}"
-             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
-             x:Class="Ursa.Demo.Dialogs.DialogWithAction">
-    <StackPanel Margin="24">
-        <TextBlock FontSize="16" FontWeight="600" Margin="8"  Text="{Binding Title}"></TextBlock>
-        <Calendar SelectedDate="{Binding Date}" ></Calendar>
-        <StackPanel HorizontalAlignment="Right" Orientation="Horizontal" Spacing="8">
-            <Button Content="Dialog" Command="{Binding DialogCommand}"></Button>
-            <Button Content="OK" Command="{Binding OKCommand}"></Button>
-            <Button Content="Cancel" Command="{Binding CancelCommand}"></Button>
+<UserControl
+    x:Class="Ursa.Demo.Dialogs.DialogWithAction"
+    xmlns="https://github.com/avaloniaui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:local="clr-namespace:Ursa.Demo.Dialogs"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    HorizontalAlignment="Stretch"
+    VerticalAlignment="Stretch"
+    d:DesignHeight="450"
+    d:DesignWidth="800"
+    x:CompileBindings="True"
+    x:DataType="local:DialogWithActionViewModel"
+    Background="{DynamicResource SemiYellow1}"
+    mc:Ignorable="d">
+    <Grid Margin="24" RowDefinitions="Auto, *, Auto">
+        <TextBlock
+            Grid.Row="0"
+            Margin="8"
+            FontSize="16"
+            FontWeight="600"
+            Text="{Binding Title}" />
+        <Calendar
+            Grid.Row="1"
+            HorizontalAlignment="Center"
+            VerticalAlignment="Top"
+            SelectedDate="{Binding Date}" />
+        <StackPanel
+            Grid.Row="2"
+            HorizontalAlignment="Right"
+            Orientation="Horizontal"
+            Spacing="8">
+            <Button Command="{Binding DialogCommand}" Content="Dialog" />
+            <Button Command="{Binding OKCommand}" Content="OK" />
+            <Button Command="{Binding CancelCommand}" Content="Cancel" />
             <ComboBox>
                 <ComboBoxItem>A</ComboBoxItem>
                 <ComboBoxItem>B</ComboBoxItem>
                 <ComboBoxItem>C</ComboBoxItem>
             </ComboBox>
         </StackPanel>
-    </StackPanel>
+    </Grid>
 </UserControl>

demo/Ursa.Demo/ViewModels/DrawerDemoViewModel.cs

@@ -6,6 +6,7 @@ using CommunityToolkit.Mvvm.Input;
 using Ursa.Common;
 using Ursa.Controls;
 using Ursa.Controls.Options;
+using Ursa.Demo.Dialogs;
 
 namespace Ursa.Demo.ViewModels;
 
@@ -23,6 +24,7 @@ public partial class DrawerDemoViewModel: ObservableObject
 
     private async Task OpenDrawer()
     {
-        await Drawer.ShowCustom<Calendar, string, bool>("Hello World", new CustomDrawerOptions() { Position = SelectedPosition, MinWidth = 400 });
+        await Drawer.ShowCustom<DialogWithAction, DialogWithActionViewModel, bool>(new DialogWithActionViewModel(),
+            new CustomDrawerOptions() { Position = SelectedPosition, MinWidth = 400, MinHeight = 400});
     }
 }