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AnimatedExpanderDecorator Class

Namespace:
ActiproSoftware.Windows.Controls
Assembly:
ActiproSoftware.Shared.Wpf.dll

Represents a Decorator that can be used in an Expander template to provide animated content display.

public class AnimatedExpanderDecorator : Decorator
Inheritance:
object Visual UIElement FrameworkElement Decorator object

Constructors

AnimatedExpanderDecorator()

Initializes an instance of the class.

public AnimatedExpanderDecorator()

Properties

CanMeasureCollapsedContent

Gets or sets whether the expander will use the width measurement of collapsed content when calculating its own width. This is a dependency property.

public bool CanMeasureCollapsedContent { get; set; }

Property Value

bool:

true if the expander will use the width measurement of collapsed content when calculating its own width; otherwise, false. The default value is false.

Remarks

When true, a consistent width will be maintained when collapsed. When false, the expander will load faster (if collapsed) since less measuring is taking place.

CollapseDuration

Gets or sets the Duration of the collapse animation. This is a dependency property.

public Duration CollapseDuration { get; set; }

Property Value

Duration:

The Duration of the collapse animation. The default value is 150 milliseconds.

CollapsedVisibility

Gets or sets the Visibility of the decorator when IsExpanded is false. This is a dependency property.

public Visibility CollapsedVisibility { get; set; }

Property Value

Visibility:

The Visibility of the decorator when IsExpanded is false. The default value is Hidden.

ExpandDirection

Gets or sets the ExpandDirection of the expansion. This is a dependency property.

public ExpandDirection ExpandDirection { get; set; }

Property Value

ExpandDirection:

The ExpandDirection of the expansion. The default value is ExpandDirection.Down.

ExpandDuration

Gets or sets the Duration of the expand animation. This is a dependency property.

public Duration ExpandDuration { get; set; }

Property Value

Duration:

The Duration of the expand animation. The default value is 150 milliseconds.

IsAnimationEnabled

Gets or sets whether animations are enabled for an element, when supported.

public bool IsAnimationEnabled { get; set; }

Property Value

bool:

true if animations are enabled; otherwise, false. The default value is true.

IsExpanded

Gets or sets whether the contents of the decorator are expanded. This is a dependency property.

public bool IsExpanded { get; set; }

Property Value

bool:

true if the contents of the decorator are expanded; otherwise, false.

Methods

ArrangeOverride(Size)

When overridden in a derived class, positions child elements and determines a size for a FrameworkElement derived class.

protected override Size ArrangeOverride(Size arrangeSize)
Parameter Type Description
arrangeSize Size

The final area within the parent that this element should use to arrange itself and its children.

Returns

Size:

The actual size used.

GetCollapseDuration(DependencyObject)

Gets the value of the CollapseDuration attached property for the specified object.

public static Duration GetCollapseDuration(DependencyObject obj)
Parameter Type Description
obj DependencyObject

The object from which the property value is read.

Returns

Duration:

The object's value.

GetExpandDuration(DependencyObject)

Gets the value of the ExpandDuration attached property for the specified object.

public static Duration GetExpandDuration(DependencyObject obj)
Parameter Type Description
obj DependencyObject

The object from which the property value is read.

Returns

Duration:

The object's value.

MeasureOverride(Size)

When overridden in a derived class, measures the size in layout required for child elements and determines a size for the FrameworkElement-derived class.

protected override Size MeasureOverride(Size availableSize)
Parameter Type Description
availableSize Size

The available size that this element can give to child elements. Infinity can be specified as a value to indicate that the element will size to whatever content is available.

Returns

Size:

The size that this element determines it needs during layout, based on its calculations of child element sizes.

OnCollapseAnimationCompleted()

Raises the CollapseAnimationCompleted event.

protected virtual void OnCollapseAnimationCompleted()

OnExpansionAnimationCompleted()

Raises the ExpansionAnimationCompleted event.

protected virtual void OnExpansionAnimationCompleted()

SetCollapseDuration(DependencyObject, Duration)

Sets the value of the CollapseDuration attached property to the specified object.

public static void SetCollapseDuration(DependencyObject obj, Duration value)
Parameter Type Description
obj DependencyObject

The object to which the attached property is written.
value Duration

The value to set.

SetExpandDuration(DependencyObject, Duration)

Sets the value of the ExpandDuration attached property to the specified object.

public static void SetExpandDuration(DependencyObject obj, Duration value)
Parameter Type Description
obj DependencyObject

The object to which the attached property is written.
value Duration

The value to set.

Events

CollapseAnimationCompleted

Occurs when the expansion animation has completed.

public event RoutedEventHandler CollapseAnimationCompleted

Event Type

RoutedEventHandler

ExpansionAnimationCompleted

Occurs when the expansion animation has completed.

public event RoutedEventHandler ExpansionAnimationCompleted

Event Type

RoutedEventHandler

Fields

CanMeasureCollapsedContentProperty

Identifies the CanMeasureCollapsedContent dependency property. This field is read-only.

public static readonly DependencyProperty CanMeasureCollapsedContentProperty

CollapseAnimationCompletedEvent

Identifies the CollapseAnimationCompleted routed event. This field is read-only.

public static readonly RoutedEvent CollapseAnimationCompletedEvent

CollapseDurationProperty

Identifies the CollapseDuration dependency property. This field is read-only.

public static readonly DependencyProperty CollapseDurationProperty

CollapsedVisibilityProperty

Identifies the CollapsedVisibility dependency property. This field is read-only.

public static readonly DependencyProperty CollapsedVisibilityProperty

ExpandDirectionProperty

Identifies the ExpandDirection dependency property. This field is read-only.

public static readonly DependencyProperty ExpandDirectionProperty

ExpandDurationProperty

Identifies the ExpandDuration dependency property. This field is read-only.

public static readonly DependencyProperty ExpandDurationProperty

ExpansionAnimationCompletedEvent

Identifies the ExpansionAnimationCompleted routed event. This field is read-only.

public static readonly RoutedEvent ExpansionAnimationCompletedEvent

IsAnimationEnabledProperty

Identifies the IsAnimationEnabled dependency property.

public static readonly DependencyProperty IsAnimationEnabledProperty

IsExpandedProperty

Identifies the IsExpanded dependency property. This field is read-only.

public static readonly DependencyProperty IsExpandedProperty