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Set SmartHint.IsContentNullOrEmpty on RefreshState #3922

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DoLovya wants to merge 2 commits into from
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Set SmartHint.IsContentNullOrEmpty on RefreshState #3922

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4e57267
Set SmartHint.IsContentNullOrEmpty on RefreshState
DoLovya Sep 12, 2025
8700b14
Add unit test
DoLovya Sep 12, 2025
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1 change: 1 addition & 0 deletions src/MaterialDesignThemes.Wpf/SmartHint.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -265,6 +265,7 @@ private void RefreshState(bool useTransitions)
else
state = !isEmpty ? HintFloatingPositionName : HintRestingPositionName;

IsContentNullOrEmpty = proxy?.IsEmpty() == true;
IsHintInFloatingPosition = state == HintFloatingPositionName;

VisualStateManager.GoToState(this, state, useTransitions);
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27 changes: 27 additions & 0 deletions tests/MaterialDesignThemes.UITests/WPF/TextBoxes/TextBoxTests.cs
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Expand Up @@ -585,6 +585,33 @@ await Wait.For(async() =>

recorder.Success();
}

[Test]
[Description("Issue 3914")]
public async Task TextBox_ClearButtonIsVisible_WhenInitiallyCollapsedAndMadeVisible()
{
await using var recorder = new TestRecorder(App);

var grid = await LoadXaml<Grid>($"""
<Grid Margin="30">
<TextBox Visibility="Collapsed"
VerticalAlignment="Center"
materialDesign:TextFieldAssist.HasClearButton="True">
</TextBox>
</Grid>
""");

var textBox = await grid.GetElement<TextBox>("/TextBox");

await textBox.SetVisibility(Visibility.Visible);

var clearButton = await grid.GetElement<Button>("PART_ClearButton");
Visibility clearButtonVisibility = await clearButton.GetVisibility();

await Assert.That(clearButtonVisibility).IsEqualTo(Visibility.Collapsed);

recorder.Success();
}
}

public class NotEmptyValidationRule : ValidationRule
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