New UsernameCharacterCasing property for LoginDialogSettings

  Closes #2683 [Question] Force TextBox uppercase in ShowLoginAsync

Author: punker76

docs/release-notes/1.5.0.md

@@ -50,6 +50,7 @@
 - Fix background and foreground usage of controls in a `Flyout` if user changes theme on the fly. [#2337](https://github.com/MahApps/MahApps.Metro/issues/2337) The `Flyout` has a different background, so we should override some background and foreground brushes and colors.
 - Use `GrayBrush7` and `WhiteBrush` for menu `Separator` instead fixed colors.
 - Fix BindingExpression at `DropDownButton`. Don't set `ItemTemplate`to `ContentTemplate`, `ItemTemplateSelector` to `ContentTemplateSelector` and `ItemStringFormat` to `ContentStringFormat`. This breaks the whole usage of the content stuff and shows a BindingExpression path error. [#2883](https://github.com/MahApps/MahApps.Metro/issues/2883)
+- New `UsernameCharacterCasing` property for `LoginDialogSettings` [#2683](https://github.com/MahApps/MahApps.Metro/issues/2683)
 
 ## Closed Issues
 
@@ -70,3 +71,4 @@
 - [#2841](https://github.com/MahApps/MahApps.Metro/issues/2841) Modal flyout issue
 - [#2337](https://github.com/MahApps/MahApps.Metro/issues/2337) Flyout style from Accent to Light is not working
 - [#2883](https://github.com/MahApps/MahApps.Metro/issues/2883) Can Reproduce BindingExpression path error: ... property not found ... On DropDownButton
+- [#2683](https://github.com/MahApps/MahApps.Metro/issues/2683) [Question] Force TextBox uppercase in ShowLoginAsync

src/MahApps.Metro/MahApps.Metro.Shared/Controls/Dialogs/LoginDialog.cs

@@ -2,6 +2,7 @@
 using System.Security;
 using System.Threading.Tasks;
 using System.Windows;
+using System.Windows.Controls;
 using System.Windows.Input;
 
 namespace MahApps.Metro.Controls.Dialogs
@@ -10,21 +11,18 @@ public class LoginDialogSettings : MetroDialogSettings
     {
         private const string DefaultUsernameWatermark = "Username...";
         private const string DefaultPasswordWatermark = "Password...";
-        private const Visibility DefaultNegativeButtonVisibility = Visibility.Collapsed;
-        private const bool DefaultShouldHideUsername = false;
-        private const bool DefaultEnablePasswordPreview = false;
-        private const Visibility DefaultRememberCheckBoxVisibility = Visibility.Collapsed;
         private const string DefaultRememberCheckBoxText = "Remember";
 
         public LoginDialogSettings()
         {
             this.UsernameWatermark = DefaultUsernameWatermark;
+            this.UsernameCharacterCasing = CharacterCasing.Normal;
             this.PasswordWatermark = DefaultPasswordWatermark;
-            this.NegativeButtonVisibility = DefaultNegativeButtonVisibility;
-            this.ShouldHideUsername = DefaultShouldHideUsername;
+            this.NegativeButtonVisibility = Visibility.Collapsed;
+            this.ShouldHideUsername = false;
             this.AffirmativeButtonText = "Login";
-            this.EnablePasswordPreview = DefaultEnablePasswordPreview;
-            this.RememberCheckBoxVisibility = DefaultRememberCheckBoxVisibility;
+            this.EnablePasswordPreview = false;
+            this.RememberCheckBoxVisibility = Visibility.Collapsed;
             this.RememberCheckBoxText = DefaultRememberCheckBoxText;
         }
 
@@ -34,6 +32,8 @@ public LoginDialogSettings()
 
         public string UsernameWatermark { get; set; }
 
+        public CharacterCasing UsernameCharacterCasing { get; set; }
+
         public bool ShouldHideUsername { get; set; }
 
         public string PasswordWatermark { get; set; }
@@ -91,6 +91,7 @@ internal LoginDialog(MetroWindow parentWindow, LoginDialogSettings settings)
             this.InitializeComponent();
             this.Username = settings.InitialUsername;
             this.Password = settings.InitialPassword;
+            this.UsernameCharacterCasing = settings.UsernameCharacterCasing;
             this.UsernameWatermark = settings.UsernameWatermark;
             this.PasswordWatermark = settings.PasswordWatermark;
             this.NegativeButtonButtonVisibility = settings.NegativeButtonVisibility;
@@ -247,6 +248,7 @@ protected override void OnLoaded()
         public static readonly DependencyProperty MessageProperty = DependencyProperty.Register("Message", typeof(string), typeof(LoginDialog), new PropertyMetadata(default(string)));
         public static readonly DependencyProperty UsernameProperty = DependencyProperty.Register("Username", typeof(string), typeof(LoginDialog), new PropertyMetadata(default(string)));
         public static readonly DependencyProperty UsernameWatermarkProperty = DependencyProperty.Register("UsernameWatermark", typeof(string), typeof(LoginDialog), new PropertyMetadata(default(string)));
+        public static readonly DependencyProperty UsernameCharacterCasingProperty = DependencyProperty.Register("UsernameCharacterCasing", typeof(CharacterCasing), typeof(LoginDialog), new PropertyMetadata(default(CharacterCasing)));
         public static readonly DependencyProperty PasswordProperty = DependencyProperty.Register("Password", typeof(string), typeof(LoginDialog), new PropertyMetadata(default(string)));
         public static readonly DependencyProperty PasswordWatermarkProperty = DependencyProperty.Register("PasswordWatermark", typeof(string), typeof(LoginDialog), new PropertyMetadata(default(string)));
         public static readonly DependencyProperty AffirmativeButtonTextProperty = DependencyProperty.Register("AffirmativeButtonText", typeof(string), typeof(LoginDialog), new PropertyMetadata("OK"));
@@ -281,6 +283,12 @@ public string UsernameWatermark
             set { this.SetValue(UsernameWatermarkProperty, value); }
         }
 
+        public CharacterCasing UsernameCharacterCasing
+        {
+            get { return (CharacterCasing)this.GetValue(UsernameCharacterCasingProperty); }
+            set { this.SetValue(UsernameCharacterCasingProperty, value); }
+        }
+
         public string PasswordWatermark
         {
             get { return (string)this.GetValue(PasswordWatermarkProperty); }

src/MahApps.Metro/MahApps.Metro/Themes/Dialogs/LoginDialog.xaml

@@ -21,6 +21,7 @@
         <TextBox x:Name="PART_TextBox"
                  Grid.Row="1"
                  Margin="0 5 0 0"
+                 CharacterCasing="{Binding UsernameCharacterCasing, RelativeSource={RelativeSource AncestorType=Dialogs:LoginDialog, Mode=FindAncestor}, UpdateSourceTrigger=PropertyChanged}"
                  Controls:TextBoxHelper.SelectAllOnFocus="True"
                  Controls:TextBoxHelper.Watermark="{Binding UsernameWatermark, RelativeSource={RelativeSource AncestorType=Dialogs:LoginDialog, Mode=FindAncestor}, UpdateSourceTrigger=PropertyChanged}"
                  Controls:VisibilityHelper.IsCollapsed="{Binding ShouldHideUsername, RelativeSource={RelativeSource AncestorType=Dialogs:LoginDialog, Mode=FindAncestor}, UpdateSourceTrigger=PropertyChanged}"