Table of Contents

Class ExpanderViewBox

Namespace
Nalu
Assembly
Nalu.Maui.Layouts.dll

Represents a view box that can be expanded or collapsed with an animation.

[ContentProperty("Content")]
public class ExpanderViewBox : ViewBoxBase, INotifyPropertyChanged, IVisualTreeElement, IEffectControlProvider, IToolTipElement, IContextFlyoutElement, IAnimatable, IViewController, IVisualElementController, IElementController, IGestureController, IGestureRecognizers, IPropertyMapperView, IHotReloadableView, IReplaceableView, ISafeAreaView, IExpanderViewBox, IViewBox, IContentView, IView, IElement, ITransform, IPadding, ICrossPlatformLayout, IDisposable
Inheritance
ExpanderViewBox
Implements
Inherited Members

Fields

AnimationBehaviorProperty

Bindable property for AnimationBehavior property.

public static readonly BindableProperty AnimationBehaviorProperty

Field Value

BindableProperty

CanCollapseProperty

Bindable property for CanCollapse property.

public static readonly BindableProperty CanCollapseProperty

Field Value

BindableProperty

CollapsedHeightProperty

Bindable property for CollapsedHeight property.

public static readonly BindableProperty CollapsedHeightProperty

Field Value

BindableProperty

CollapsedWidthProperty

Bindable property for CollapsedWidth property.

public static readonly BindableProperty CollapsedWidthProperty

Field Value

BindableProperty

ContentProperty

Bindable property for Content property.

public static readonly BindableProperty ContentProperty

Field Value

BindableProperty

IsExpandedProperty

Bindable property for IsExpanded property.

public static readonly BindableProperty IsExpandedProperty

Field Value

BindableProperty

Properties

AnimationBehavior

Gets or sets the behavior of the expander animation.

public ExpanderAnimationBehavior AnimationBehavior { get; set; }

Property Value

ExpanderAnimationBehavior

CanCollapse

Gets a value indicating whether the content will collapse when the view box is not expanded.

public bool CanCollapse { get; }

Property Value

bool

CollapsedHeight

Gets the height of the view box when it is collapsed vertically.

public double CollapsedHeight { get; set; }

Property Value

double

Remarks

-1 means the expander does not collapse vertically.

CollapsedWidth

Gets the width of the view box when it is collapsed horizontally.

public double CollapsedWidth { get; set; }

Property Value

double

Remarks

-1 means the expander does not collapse horizontally.

Content

Gets or sets the content of the view box.

public IView? Content { get; set; }

Property Value

IView

IsExpanded

Gets or sets a value indicating whether the view box is expanded.

public bool IsExpanded { get; set; }

Property Value

bool

Remarks

The view box is expanded by default.

Methods

ArrangeOverride(Rect)

Allows subclasses to implement custom Arrange logic during a controls layout pass.

protected override Size ArrangeOverride(Rect bounds)

Parameters

bounds Rect

The new bounds of the element.

Returns

Size

The resulting size of this element's frame by the platform.

Remarks

Subclasses will stil want to call ArrangeOverride(Rect) on the base class or call PlatformArrange(Rect) on the Handler .

CreateLayoutManager()

Creates a manager object that can measure this container and arrange its content.

protected override ILayoutManager CreateLayoutManager()

Returns

ILayoutManager

The instance of the layout manager.

Dispose()

Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.

public void Dispose()

Dispose(bool)

Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.

protected virtual void Dispose(bool disposing)

Parameters

disposing bool

GetContent()

Gets the content.

protected override IView? GetContent()

Returns

IView

OnBindingContextChanged()

Invoked whenever the binding context of the View changes.

protected override void OnBindingContextChanged()

Remarks

This method can be overridden to add class handling for this event. Overrides must call the base method.

OnHandlerChanged()

When overridden in a derived class, should raise the HandlerChanged event.

protected override void OnHandlerChanged()

Remarks

It is the implementor's responsibility to raise the HandlerChanged event.

SetContent(IView?)

Sets the content.

protected override void SetContent(IView? content)

Parameters

content IView

The new content.

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