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AnimationSelector Expand/Collapse

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ComboBox
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Steve
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Steve asked on 07 May 2013, 08:11 PM
Hello,

I'm trying AnimationSelector Expand/Collapse not work in WPF in Silverlight not any problem. Thanks.

<Style x:Key="RadComboBoxStyle" TargetType="telerik:RadComboBox">
    <Setter Property="Template" Value="{StaticResource NonEditableComboBox}"/>
    <Setter Property="EditableTemplate" Value="{StaticResource EditableComboBox}"/>
    <Setter Property="NonEditableTemplate" Value="{StaticResource NonEditableComboBox}"/>
    <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
    <Setter Property="VerticalContentAlignment" Value="Center"/>
    <Setter Property="MinHeight" Value="22"/>
    <Setter Property="Padding" Value="4,0,20,0"/>
    <Setter Property="Background" Value="{StaticResource MarkerBrush}"/>
    <Setter Property="BorderThickness" Value="1"/>
    <Setter Property="UseLayoutRounding" Value="True"/>
    <Setter Property="telerik:AnimationManager.AnimationSelector">
        <Setter.Value>
            <telerik:AnimationSelector>
                <telerik:AnimationGroup AnimationName="Expand">
                    <telerik:SlideAnimation Direction="In" SlideMode="Top" TargetElementName="PopupRoot"/>
                </telerik:AnimationGroup>
                <telerik:AnimationGroup AnimationName="Collapse">
                    <telerik:SlideAnimation Direction="Out" SlideMode="Top" TargetElementName="PopupRoot"/>
                </telerik:AnimationGroup>
            </telerik:AnimationSelector>
        </Setter.Value>
    </Setter>
    <Setter Property="FontFamily" Value="Segoe UI"/>
    <Setter Property="FontSize" Value="12"/>       
    <Setter Property="BorderBrush" Value="{StaticResource MainBrush}"/>
    <Setter Property="Foreground" Value="{StaticResource BasicBrush}"/>
    <Setter Property="ItemContainerStyle" Value="{StaticResource RadComboBoxItemStyle}"/>
</Style>

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Masha
Telerik team
answered on 09 May 2013, 11:16 AM
Hello Steve,

Unfortunately the desired approach cannot be achieved in wpf applications.
AnimationManager.AnimationSelector property is supported for Silverlight only.

I can suggest you to create CustomComboBox something like this:
public class CustomComboBox : RadComboBox
{
    public override void OnApplyTemplate()
    {
        base.OnApplyTemplate();
 
        var popup = GetTemplateChild("PART_Popup") as System.Windows.Controls.Primitives.Popup;
        popup.Opened += popup_Opened;
    }
 
    void popup_Opened(object sender, EventArgs e)
    {
        var popup = GetTemplateChild("PART_Popup") as System.Windows.Controls.Primitives.Popup;
        popup.PopupAnimation = PopupAnimation.Fade;
    }
}

I hope this information will be helpful.

All the best,
Masha
the Telerik team

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Steve
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Masha
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